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[Release] My first Crackme!

 
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Hieroglyphics
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Joined: 06 Dec 2007
Posts: 2007
Location: Your bedroom

PostPosted: Sat Sep 27, 2008 7:34 pm    Post subject: [Release] My first Crackme! Reply with quote

I just learned simple reversing today, and I made my first crackme :\

I know it's crazy easy but w/e here you go =D

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&Vage
Grandmaster Cheater Supreme
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Joined: 25 Jul 2008
Posts: 1053

PostPosted: Sat Sep 27, 2008 8:52 pm    Post subject: Reply with quote

DWORDTForm1Addy909090909090=nop

Lolwat. It's coded in delphi. I thought "DWORDTForm1Addy909090909090=nop" was a string to throw me off at first then I went to your check routine than found out it didn't return anything ;-;
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Hieroglyphics
I post too much
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Joined: 06 Dec 2007
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PostPosted: Sat Sep 27, 2008 11:17 pm    Post subject: Reply with quote

Haha it was to throw you off, and yeah it was in Delphi, pretty good idea huh Wink I wanted to talk to you today, but you werent on MSN! ttyl peace.
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Zerith
Master Cheater
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Joined: 07 Oct 2007
Posts: 468

PostPosted: Sun Sep 28, 2008 5:15 am    Post subject: Reply with quote

Check routine:


Code:

004537D4  /. 55             PUSH EBP
004537D5  |. 8BEC           MOV EBP,ESP
004537D7  |. 6A 00          PUSH 0
004537D9  |. 53             PUSH EBX
004537DA  |. 8BD8           MOV EBX,EAX
004537DC  |. 33C0           XOR EAX,EAX
004537DE  |. 55             PUSH EBP
004537DF  |. 68 33384500    PUSH hCrack_v.00453833
004537E4  |. 64:FF30        PUSH DWORD PTR FS:[EAX]
004537E7  |. 64:8920        MOV DWORD PTR FS:[EAX],ESP
004537EA  |. 8D55 FC        LEA EDX,DWORD PTR SS:[EBP-4]
004537ED  |. 8B83 FC020000  MOV EAX,DWORD PTR DS:[EBX+2FC]
004537F3  |. E8 54F2FDFF    CALL hCrack_v.00432A4C
004537F8  |. 8B45 FC        MOV EAX,DWORD PTR SS:[EBP-4]
004537FB  |. BA 48384500    MOV EDX,hCrack_v.00453848                ;  ASCII "DWORDTForm1Addy909090909090=nop"
00453800  |. E8 530AFBFF    CALL hCrack_v.00404258
00453805  |. 75 0C          JNZ SHORT hCrack_v.00453813
00453807  |. B8 70384500    MOV EAX,hCrack_v.00453870                ;  ASCII "Nice C++ Much?"
0045380C  |. E8 5B3BFDFF    CALL hCrack_v.0042736C
00453811  |. EB 0A          JMP SHORT hCrack_v.0045381D
00453813  |> B8 88384500    MOV EAX,hCrack_v.00453888                ;  ASCII "You PHAIL!"
00453818  |. E8 4F3BFDFF    CALL hCrack_v.0042736C
0045381D  |> 33C0           XOR EAX,EAX
0045381F  |. 5A             POP EDX
00453820  |. 59             POP ECX
00453821  |. 59             POP ECX
00453822  |. 64:8910        MOV DWORD PTR FS:[EAX],EDX
00453825  |. 68 3A384500    PUSH hCrack_v.0045383A
0045382A  |> 8D45 FC        LEA EAX,DWORD PTR SS:[EBP-4]
0045382D  |. E8 1A06FBFF    CALL hCrack_v.00403E4C
00453832  \. C3             RETN





Next time don't use a Message Box =|
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Labyrnth
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Joined: 28 Nov 2006
Posts: 6289

PostPosted: Mon Sep 29, 2008 8:12 pm    Post subject: Reply with quote

Original:
JNZ SHORT 00453813

Corrected:
JE SHORT 00453813


It is always fun to do these things.
Now with this correction you can use any password you want but the real one. Smile

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&Vage
Grandmaster Cheater Supreme
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Joined: 25 Jul 2008
Posts: 1053

PostPosted: Mon Sep 29, 2008 8:55 pm    Post subject: Reply with quote

Labyrnth wrote:
Original:
JNZ SHORT 00453813

Corrected:
JE SHORT 00453813


It is always fun to do these things.
Now with this correction you can use any password you want but the real one. Smile


Better. Change JNZ SHORT 00453813 to JMP SHORT 00453813. You can use anything.
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tuxpr0
Cheater
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Joined: 20 Apr 2006
Posts: 38
Location: Israel

PostPosted: Fri Nov 21, 2008 3:56 am    Post subject: Reply with quote

_void_ wrote:
Labyrnth wrote:
Original:
JNZ SHORT 00453813

Corrected:
JE SHORT 00453813


It is always fun to do these things.
Now with this correction you can use any password you want but the real one. Smile


Better. Change JNZ SHORT 00453813 to JMP SHORT 00453813. You can use anything.
Crackme'z owned!! Very Happy
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