downloadbrowsejz__'s jz_crackme1

Download jz_crackme1.zip, 39 kb (password: crackmes.de)
Browse contents of jz_crackme1.zip

the goal is to find out the right password.

you'll have to reverse engineer the simple encryption algorithms.

it's not packed.

and of course i put many hints in it so you don't need to worry about bruteforcing

it's easy and has fun stuff in it. have fun~

you can upload the solution here and if you want, maybe you could leave replies or send trackbacks to jz.pe.kr/37

Difficulty: 2 - Needs a little brain (or luck)
Platform: Windows
Language: C/C++

Published: 06. May, 2009
Downloads: 471

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Solutions

Solution by skalk, published 14. may, 2009; download (62 kb), password: crackmes.de or browse.

skalk has rated this crackme as quite nice.

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Discussion and comments

indomit
08. May 2009		Solved. It's very easy 'cos all checks are clear and there is no traps :)
jz__
Author
08. May 2009		thank you for trying :)
would you please upload your solution?
my crackme looks lonely all by himself.. he needs his solution to stay with♡
indomit
08. May 2009		I think I will leave writing solution to someone less advanced cracker :)
jz__
Author
08. May 2009		that's very thoughtful of you :)
skalk
13. May 2009		I solved it too.
jz__
Author
13. May 2009		@skalk
yup, you got the answer!
freesoul
13. May 2009		jz can I upload a buffer overflow solution? :) try as input 1304 characters + offset 0040147F + 150 characters xD
jz__
Author
14. May 2009		@freesoul

omg really? XDXDXD

i recognize this crackme has bof vuln in main func,

yeah sure you can upload it. i'm curious.

but still, it can't be an answer because the purpose itself wasn't just to set eip to "you got it!" .
the question originally was to send an auth e-mail to "answer"@gmail.com

(i just fixed the success message to fit in crackmes.de :) )

but bof can't guess the answer to send an auth e-mail, right? :)

but great try, really, i'm curious. XD
jz__
Author
15. May 2009		solution uploaded by skalk.

what a nice solution :)
izlesa
28. Jun 2009		nice trick with KUSER_SHARED_DATA ))) but strange that your put so early in code second save of TickCountLow?
sry for bad english )

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