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 Thursday, March 21 2019 @ 02:09 AM CET

KeyMe2

   

CrackmesLevel : 2/10
OS : windows
Language : ASM



KeyMe 2

Hi and welcome to new crackme!

1. Your primary objective is to create generic keygen. It should be very easy. And no junk code this time.
2. Secondary goal is to describe anti-stuff. It is also easy and nothing new, so that won't be problem too.
3. And for the end, write solution to help others who don't have such skills as you :)


The keygenme can be found here

PS

Sorry for shitty coding and possible bugs, I tried my best. If you have any suggestions , please give your comment.


Regards, haggar ;)




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KeyMe2 | 10 comments | Create New Account
The following comments are owned by whomever posted them. This site is not responsible for what they say.
Buffer not used?
Authored by: TDC on Friday, April 14 2006 @ 07:26 PM CEST
Once I got through the anti-debugging and hashing/checking algorithms, I discovered that the final 'lstrcmp' compares 4032A0 with another buffer. I searched for references and looked through the algorithms to see if the bytes were ever going to be writed, but it doesn't seem so. Is this a bug haggar? Or can you give a little hint ;)

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:: The Dutch Cracker ::

KeyMe2
Authored by: haggar on Friday, April 14 2006 @ 09:16 PM CEST
It shouldn't be bugs since couple guys already solved it. Post here your serial, and then post snippet where lstrcmp is and we will see what you have :)
  • KeyMe2 - Authored by: TDC on Saturday, April 15 2006 @ 07:12 PM CEST
  • KeyMe2 - Authored by: SKiLLa on Saturday, April 15 2006 @ 07:42 PM CEST
  • KeyMe2 - Authored by: moniker on Saturday, April 15 2006 @ 08:36 PM CEST
  • KeyMe2 - Authored by: TDC on Saturday, April 22 2006 @ 08:13 PM CEST
KeyMe2
Authored by: moniker on Friday, April 14 2006 @ 10:15 PM CEST
i wrote up my solution and posted it here for anybody who's up for some spoilers

http://rapidshare.de/files/18016005/Solution_Haggar_Keyme2_By_Moniker.rar.html

It's a fun cracking with nothing to get frustrated about :)

gj haggar
KeyMe2
Authored by: TDC on Saturday, April 22 2006 @ 08:14 PM CEST
i can't enter a longer string, than it will always say "Input invalid"

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:: The Dutch Cracker ::

  • KeyMe2 - Authored by: moniker on Saturday, April 22 2006 @ 10:22 PM CEST
KeyMe2
Authored by: eraser on Wednesday, April 04 2007 @ 03:56 PM CEST

To remove anti-tricks you can use these two memory patches (e.g. use them direct in OllyDbg):

00401000 jmp 00401194
00401611 retn

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the real failure is when you don't learn anything from any given situation

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