downloadbrowsewaganono's Root Me #1

Download RootMe.zip, 192 kb (password: crackmes.de)
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RootMe #1 by waganono

It's a standard crypto-keygenme.
You have to write a keygen.

No anti-debug tricks.
Modular arithmetic must be you friend :)

Solution code is not too long to write in C with standard libraries.

Difficulty: 5 - Professional problem to solve
Platform: Windows
Language: C/C++

Published: 14. Feb, 2011
Downloads: 509

Rating

Votes: 4
Crackme is good.

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Solutions

Solution by tamaroth, published 15. mar, 2011; download (954 kb), password: crackmes.de or browse.

tamaroth has rated this crackme as awesome.

Solution by andrewl.us, published 04. mar, 2011; download (35 kb), password: crackmes.de or browse.

andrewl.us has rated this crackme as quite nice.

Solution by Dcoder, published 04. mar, 2011; download (431 kb), password: crackmes.de or browse.

Dcoder has not rated this crackme yet.

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Discussion and comments

promix17
14. Feb 2011
Why is it packed by UPX? Where are the rules?
andrewl.us
Moderator
14. Feb 2011
yes promix17 its fixed! now check out this cool crackme :)
maracuja
22. Feb 2011
Follow the andrewl.us, It's crackme is really fun despite it's not packed by upx. Doh upx :> :)
tamaroth
Moderator
04. Mar 2011
Awesome job!
At the moment of you releasing the solutions I'm still factorizing the modulus, hopefully i can finish my keygen soon!
yo-mismo
06. Mar 2011
i have attempping to solve it near 3 days. I'm too noob (and non-english speaker), but i gonna solve it without solution... Very cool crackme :)
Numernia
Moderator
06. Mar 2011
really great solutions, good job! ^^
tamaroth
Moderator
08. Mar 2011
Despite the fact that there are already 2 solutions to this great crackme, I'm writing one as well. Hopefully it will shed some light on few more complicated things :)
waganono
Author
09. Mar 2011
Very nice solution from andrewl.us and Dcoder.
Congratulations and hope i see you for next chapter :)
tamaroth
Moderator
15. Mar 2011
Solution uploaded as well, fun kgme! :)
waganono
Author
17. Mar 2011
Thx, nice solution too

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