downloadbrowseCthulhu's Cthulhu's Keygen-Me #1

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Cthulhu's Keygen-me #1

This is my first Keygen me. Specially written to this great RCE site.
I Hope you have fun with it. GOOD LUCK!

Rules:
No rules ;-) Just create a valid keyfile and write a tutorial explaining how you did it.

Difficulty: 4 - Needs special knowledge
Platform: Windows
Language: C/C++

Published: 18. Feb, 2005
Downloads: 1118

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Discussion and comments

Tyren
28. Jan 2006
Dude, this is tough. Anyone else trying to solve this?
Ox87k
29. Jan 2006
700 downloads and no solutions? :| Maybe the real difficulty is more than 2!
D4ph1
29. Jan 2006
I cant run this...:/
Ox87k
29. Jan 2006
Cthulhu, can u make a new 32 bit version of this crackme? :) (thanks!)
zairon
Moderator
30. Jan 2006
I'm able to run the crackme.
D4ph1 and 0x87k, can you give us more details about your problem(s)?
Cthulhu
Author
30. Jan 2006
It would be nice that the author of the crackme receive some e-mail when someone post a comment on it.
Some answers:
0x87k: It is a 32 bit prog. But I agree with you I would change it to level 4 but I haven't seen a way to do it.
Tyren: You're doing a great job I think you are about to solve it.
D4ph1: It runs well, what kind of problem are you having?
zairon
Moderator
30. Jan 2006
>I would change it to level 4 but I haven't seen a way to do it.

You can't change it, only mods can.
Cthulhu
Author
31. Jan 2006
Hi Zairon!
Could you change it for me, please?
D4ph1
31. Jan 2006
When I run it, nothing happens and when I loaded in Olly it says "Bad or unknow format of 32 bit executable"
Ox87k
31. Jan 2006
"Bad or unknow format of 32 bit executable" is the my same error!
HMX0101
31. Jan 2006
this is because NumOfRva <> 10, you can change this using a pe editor
Kerberos
31. Jan 2006
D4ph1: I'm sorry, but you're wrong. After loading into OllyDbg and running it by F9 CME is immediately killed by a little AntiDebug trick :)
D4ph1
01. Feb 2006
I run the crackme in win2k and it runs fine
Kerberos : Maybe its antidebug trick but the crackme doesnt even run in XP as I said!It does nothing...
zairon
Moderator
01. Feb 2006
D4ph1, I'm able to run it on xp-sp1 and sp2.

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