downloadbrowsenwert's hyperbola

Download hyperbola.zip, 40 kb (password: crackmes.de)
Browse contents of hyperbola.zip

This task is about (hopefully) interesting crypto/math and some reversing.

Don't let yourself fool by the size of the executable, that's just because the runtime is statically compiled into it.

Valid solution is a working keygen only!

Some working serials:
asd 4311BB3FABC1F375-12E963D4E0F5E3AA
nwert 23D6A3DBDC8D82B9-006BE82477987D21
lulzboat 65453E28B461171D-3059BD500F6FDABA

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

Published: 16. Jun, 2014
Downloads: 209

Rating

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Solutions

Solution by Dcoder, published 04. aug, 2014; download (276 kb), password: crackmes.de or browse.

Dcoder has rated this crackme as quite nice.

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Discussion and comments

tamaroth
Moderator
29. Jun 2014		Am I missing something or did you forget to include both curve parameters (a2,a6)?
andrewl.us
Moderator
01. Jul 2014		The moderator comments he supplied are a full reveal, but I can't ruin the challenge. But without a hint, this could turn into "find what exotic thing I'm implementing" hunt. It is indeed curve related.
tamaroth
Moderator
02. Jul 2014		Yeah, I've figured it out, now I'm on a hunt for papers ><
Dcoder
23. Jul 2014		Neat. I'll write up a solution later.

Dcoder
73A36BA82B921DE1-3DC7533DE76654BA
nwert
Author
24. Jul 2014		Nicely done Dcoder!
boonz
04. Aug 2014		Awesome solution, Dcoder!
deurus
13. Oct 2014		Very good job Dcoder!

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