downloadbrowsemucki's crackme#1

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This is my first crackme (Keygenme), written in C++.

- find the solution
- make a keygen
- and submit a tutorial

tested on WinXP SP1 but should also work on other windows os.

Regards,

mucki

Difficulty: 1 - Very easy, for newbies
Platform: Windows
Language: C/C++

Published: 24. Aug, 2006
Downloads: 1374

Rating

Votes: 3
Crackme is nothing special.

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Solutions

Solution by Nuno_1, published 28. aug, 2006; download (121 kb), password: crackmes.de or browse.

Nuno_1 has rated this crackme as quite nice.

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Discussion and comments

cyclops
Moderator
25. Aug 2006
I have done a selg keygen on it. I am lazy to write a solution...
ht*p://rapidshare.de/files/30704628/crackme1_patched2.zip.html
D4ph1
26. Aug 2006
I found the key for my name but it only works when debugger is on. when i run it all alone the same serial doesnt work....is this a bug?
D4ph1
26. Aug 2006
Ooops...now i see...A keygen is on the way ;)
mucki
Author
26. Aug 2006
sorry D4ph1 but it's not a bug - it's a trap.
geeko
26. Aug 2006
My keygen was rejected. Does anyone know why?
zairon
Moderator
26. Aug 2006
D4ph1, you are not the only one falling in the trap... geeko did the same :)
D4ph1
26. Aug 2006
I cant keygen this. someone submit a tut plz :(
mucki
Author
26. Aug 2006
hint: the algo is simple but only the last digit is a bit tricky (calculated from the previous number not from the name)
Zaphod
27. Aug 2006
It would be easy to write a selfkeygen because the full serial (including the last digit) is in memory at some point, but as mucki says, this last digit is rather tricky. Too tricky for me, I'm afraid, but I'm still working on it...
D4ph1
27. Aug 2006
i make the keygen and when i have time i will submit the tut. great work mucki ;)
cyclops
Moderator
28. Aug 2006
Every one is falling into the trap.... i think my self keygen works....
Zaphod
29. Aug 2006
I haven't entered the trap part at any time - I am always sent to the right serial-calculation part. Then I thought, oh, of course, that's because I have the HideDebugger plugin! But no, I removed the HideDebugger.dll and the HideDebugger.ini files, but still I come to the correct serial calculation part. I wonder why that is - any suggestions?
mucki
Author
29. Aug 2006
which debugger do you use?
Zaphod
29. Aug 2006
Olly - Heh, first I wrote "Olly" and nothing more - then I was told that was too short a message, so now I write this :)
mucki
Author
01. Sep 2006
I have also tried it. If HideDebugger.dll is in the Olly-dir nothing happens otherwise Olly falls into trap.
Zaphod
02. Sep 2006
Yeah - that's how it SHOULD be, but not on my computer. Mysterious...
polizei
27. Feb 2007
perhaps i missed the "trap", but i just kept jmping around it. i tested while not debugging and my keygen still worked. i'll right a tut to accompany it soon.
hound
27. Feb 2007
Lol, not sure how you could miss it. The check happens right after the GetWindowText call.....

Anyway, cool idea :D

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