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1 of 1 file passlib

    Download FINAL.zip

    Size 5 k

  • Last modified Nov 6, 2017 5:20:16 PM
     MD5 checksum ccd022a99bd4e0c34f15d840ea04a606
        Mime type Zip archive data

1997 November 30

  • Zip - DOS / Computer tool
  • PassLib, writer credits
  • PassLib, program credits
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  • FINAL/
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c0de segment org 100h assume cs:c0de,ds:c0de,es:c0de start: jmp realStart ;------------------------------------------------------------------------ ; ; name: passLib ; code: anormal ; rev : 0.1 Sun 11-30-1997 : first 8bit working version ; ; todo: tweak in 32bits, investigate mmx non-saturated arithmetic, ; try loop unrolling with indexed jumps ; add decWord ; ; possible errors: i've not add code to test for word > 255 because ; this seems to be impossible to happen ; ;------------------------------------------------------------------------ ;------------------------------------------------------------------------ ; code ;------------------------------------------------------------------------ ;------------------------------------------------------------------------ setAlpha proc ;input ; si = alphabet (ASCIIZ) ;output ; cx = length(alphabet) ;errors ;ax=-1 if length(alphabet) > ffh mov di,offset myAlpha xor cx,cx xor ax,ax setal1: lodsb or al,al je endSeta stosb inc cx cmp cx,00ffh jg setaE1 jmp setal1 setaE1: mov ax,-1 ret endSeta: mov isAlphaSet,1 mov lAlpha,cx ret setAlpha endp ;------------------------------------------------------------------------ setWord proc ;input ; si = initial word (ASCIIZ) ;output ; cx = length(word) ; si = offset where you could read the word ;errors ;ax=-1 if length(word) > ffh ;ax=-2 if some char in word is not in alphabet ;ax=-3 if alphabet is not set mov bx,isAlphaSet mov ax,-3 or bx,bx jne setwO1 ret setwO1: mov di,offset myWord xor cx,cx xor ax,ax setwl1: lodsb or al,al je endSetw1 stosb inc cx cmp cx,00ffh jg setwE1 jmp setwl1 setwE1: mov ax,-1 endSetW1: dec cx mov lWord,cx ; now setting counters xor bx,bx mov dx,cx ;saves lword mov si,offset myWord setwl2: mov al,[si+bx] mov di,offset myalpha mov cx,lAlpha repnz scasb je setwO2 mov ax,-2 ;char not found in alphabet ret setwO2: mov ax,lAlpha inc cx sub ax,cx mov [myCnts+bx],al inc bx cmp bx,dx jng setwl2 mov cx,lWord ret setWord endp ;------------------------------------------------------------------------ incWord proc ;input ; si = actual word (ASCIIZ) ;output ; none ;errors ; none mov si,offset myCnts mov di,si dec di mov ax,lAlpha mov bx,lWord inc byte ptr [bx+si] chkCarry: cmp [bx+si],al jb noCarry inc byte ptr [bx+di] ;we'll use di=si-1 to avoid [bx+si-1] dec bx jnz chkCarry noCarry: ; must increment long of word cmp [si],al ;has produced the first char carry? jb noIncLength inc word ptr lWord ;yes!, increment length of word mov al,[myAlpha] mov cx,lWord mov di,offset myWord rep stosb ;fill new word with first char (a) stosb xor al,al mov di,offset myCnts mov cx,lWord ;set counters to 0 rep stosb stosb ret ;premature exiting from proc noIncLength: mov ax,lAlpha mov bx,lWord incwL1: ;check for cmp [bx+si],al jb noSet0 mov byte ptr [bx+si],0 noSet0: or bx,bx je endSet0 dec bx jmp incwL1 endSet0: mov si,offset myWord mov bp,lWord buildWord: ;translate counters to chars mov bl,myCnts[bp] mov al,myAlpha[bx] mov [si+bp],al or bp,bp je endBuildWord dec bp jmp buildWord endBuildWord: ret incWord endp ;------------------------------------------------------------------------ ; data ;------------------------------------------------------------------------ align 4 myAlpha db 0ffh dup(0) align 4 myWord db 0ffh dup(0) align 4 myCnts db 0ffh dup(0) align 4 LWord dw 0 LAlpha dw 0 isAlphaSet dw 0 ;------------------------------------------------------------------------ ; end module ;------------------------------------------------------------------------ realStart: mov si,offset alpha call setAlpha mov si,offset initPal call setWord mov offword,si .486 crack: call IncWord mov cx,83h mov si,offword crack2: mov ax,[si] rol ax,cl mov dx,[si+2] xor ax,dx xor ax,cx mov bx,ax mov ax,[si+4] mul bx mov [si+2],ax or ax,ax jne noprint xor dx,cx ;needed to force the 07 printing cmp dl,0bh jne noprint mov si,offword mov di,offset initpal copy: lodsb or al,al je endcopy stosb jmp copy endcopy: mov byte ptr [di],13 mov byte ptr [di+1],10 mov byte ptr [di+2],'$' mov dx,offset initpal mov ah,9h int 21h noprint: inc cx cmp cx,0ffh jne crack2 cmp lWord,6 jne crack mov ah,4ch int 21h offword dw ? initPal db '99999',0,0,0,0,0,0,0,0,0,0,0,0 ;alpha db '0123456789abcdefghijklmnopqrstuvwxyz',0 alpha db '0123456789abcdef',0 ;alpha db '0123456789',0 c0de ends end start
FINAL/CRACK39.ASM 80x271 Font