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- ; Author can be email at: stone@one.se ;>
- ; Formatted with Darkstalkers ASMFMT ;).. thnx ds :)
- .model SMALL
- .stack 100h
- .386
-
- .DATA
- input DB 39,0
- uname DB 39 dup (0h)
-
- d47503c DD 0123e1h ; This is used as initial value for IMUL
-
- valid DB 10,13,'A valid key is: '
- realkey DB 12 dup (30h) ; Serial number is 12 digits long
- enstr DB 10,13,'$' ; Write termination
-
- flaffer DB 39 dup (0) ; Used for the high/low bit cleaned string
-
- introtxt DB ' What Is This? 1.6 *Keymaker* ',10,13
- DB '──────────────| STONE |──────────────',10,13
- DB ' ▄▄▄ ▄▄▄ ▄▄▄▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄▄ ',10,13
- DB ' ███ ███ ███ ███▄▄▄ ',10,13
- DB ' ███▄ ███ ███▄ ███ ',10,13
- DB ' ▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀ ▀▀▀ ',10,13
- DB '─────────────────────────────────────────',10,13
- DB 'u N I T E D c R Æ C K I N G f O R C E ',10,13
- DB '[wIN95/NT]─────────────────────[oCT 1997]',10,13
- DB 'Enter your username: ','$'
-
- DB '2nd&mi' ; Personal tag - not used
-
- ;---------------------------------------------
- .CODE
- MOV AX, @DATA ; Make DS&ES point to the DATA
- MOV DS, AX
- MOV ES, AX
-
- LEA EDX, [introtxt] ; Write intro text
- MOV AH, 9h
- INT 21h
-
- MOV AX, 0A00h
- LEA EDX, [input]
- INT 21h ; Get buffered input
-
- MOVZX EBX, [input+1] ; Fetch length
- CMP EBX,0 ; if zero - exit
- JZ EXIT
-
- CALL upcase ; Uppercase input string
- CALL cleanit ; Clean it for high/lowbit chars
-
- XOR ESI,ESI ; Zero Counter
- NextByte:
- MOVZX EAX, BYTE PTR [input+1] ; Get length
- CALL genkey ; Deciede on a letter to use for num-gen
- MOVZX EBX,[flaffer+EDX]
-
- nextitera: ; Generate a digit of the serial
- MOV EAX,0Ah
- CALL GENKEY
- DEC BL
- JNZ nextitera
-
- ADD BYTE PTR [realkey+ESI],DL ; Make it a digit
- INC ESI ; next byte
- CMP ESI,12d
- JNZ nextbyte
-
- MOV AH,09h ; Write the key
- LEA EDX,[valid]
- INT 21h
-
- EXIT:
- MOV AX,4C00h ; Exit, error code = 0
- INT 21h
-
-
- genkey PROC ; Work horse of the keymaker
- IMUL EDX,[d47503C],08088405h
- INC EDX
- MOV [d47503C],EDX
- MUL EDX
- MOV EAX,EDX
- RET
- genkey ENDP
-
- upcase PROC
- LEA EDX, [uname]
- MOV ESI,EDX
- nextletter: ; EBX = No. of letters
- MOV AL,[EDX] ; EDX = INTEXT
- CMP AL,61h
- JB notlowcase
- CMP AL,7Ah
- JA notlowcase
- SUB AL,20h ; Lowcase - make it upcase
- MOV [ESI],AL
- notlowcase:
- INC EDX
- INC ESI
- DEC EBX
- TEST EBX,EBX
- JNZ nextletter
- RET
- Upcase ENDP
-
- cleanit PROC
- LEA EDI, [flaffer] ; Store output here
- LEA ESI, [uname] ; Get input from here
- MOVZX ECX,[input+1] ; Fetch the length
- nextb:
- MOVZX EAX,BYTE PTR [ESI] ; Fetch a letter
- CMP EAX,48 ; Is it low bit?
- JB skip
- CMP EAX,91 ; is it high bit?
- JG skip
- MOVSB ; no - copy it as it is
- DEC ECX ; move on to next letter
- JNZ nextb
- RET
- skip:
- INC ESI ; skip it
- DEC BYTE PTR [input+1] ; decrease length of string
- DEC ECX ; next letter
- JNZ nextb
- RET
- cleanit ENDP
-
- END