downloadbrowseGR33d's B2c_2k5_1

Download b2c_2k5_1.zip, 7 kb (password: crackmes.de)
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Hi :)
this is my first keygen me, it a easy one, maybe for newbies, a fun one.
just make a keygen and a tute for this keygen me.

c ya in next keygen me

Difficulty: 2 - Needs a little brain (or luck)
Platform: Windows
Language: Assembler

Published: 22. Jul, 2005
Downloads: 799

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Solutions

Solution by Knight, published 23. jul, 2005; download (20 kb), password: crackmes.de or browse.

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Discussion and comments

Ox87k
22. Jul 2005		my god, i solve it... i make a keygen who work but... i don't understand the final CMP EDI, 0 :|
Ur keygenme don't use, in the check routine, the register EDI... so EDI will always remain not equal to 0 :|

Do i'm mistaking myself? (sorry for english!)
GR33d
Author
23. Jul 2005		lol :)
how did ya pass trought the last Call EBX ????
the cmp edi,0 is the last protection
the thing is, u must have edi = 0 after the ebx call (srry for whos trying to solve it yet :P)
Ox87k
23. Jul 2005		In the 'call ebx' there are only 2 'cdq' but this instruction sets only the 'edx' register!

Maybe you did a mistake!
GR33d
Author
23. Jul 2005		Thats the deal,
the 2 'cdq' insructions are there because they are made from the serial!!
u gotta find a way to leave edi=0 INSIDE de call, ur serial is suposed to be a opcode that leaves esi = 0 and checksum = 285h!
Ox87k
24. Jul 2005		yeah! I do it, only now i understand ;) but... too late! Knight do it before me... :'(

However, good crackme Gr33d ;)

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