downloadbrowseredoC's Krypto Krakme

Download, 42 kb (password:
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It's little different crackme, anyway kinda easy. First you must find unlock password (it's quite short) than register the program.

Bruting allowed, no patching. Write keygen and solution.

Difficulty: 3 - Getting harder
Platform: Windows
Language: C/C++

Published: 04. Feb, 2013
Downloads: 318


Votes: 3
Crackme is boring.

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Solution by bike, published 01. jun, 2013; download (95 kb), password: or browse.

bike has rated this crackme as quite nice.

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Discussion and comments

03. Nov 2012
although I didn't analise it very deeply, there seems to be something strange: you seem to Hash the 'password' and then use it to decode a function (probably the good boy function) and you don't seem to check any other conditions on the hashed key, you simply jump to the decoded function and hope for the crackme to crash... is this totally true or am I missing something?
04. Nov 2012
it's true, bruting allowed
06. Nov 2012
Which implementation of AES did you use?
08. Nov 2012
try this
...but I think you dont necessarily need source code to break it
09. Nov 2012
What I need is an implementation that behaves on same input data (key, iv, data) in the same way as yours in order to create a bruteforce. Without it my tries are futile, I'm not gonna manually bruteforce it ...
09. Nov 2012
I use source code v1.0 mentioned above, try AesDecryptPCBC_InPlace(), if do not match you can still do self-brutforcer, inject dll or so, good luck
09. Nov 2012
For what it's worth, I can confirm that the encryption it works as advertised by redoC. Cool challenge.
13. Nov 2012
Ok, finally done.

name: tamaroth
serial: RnLbU+ngDOe9AucFnLFdKw==

For future reference, when you write code similar to this, make sure to give us at least some boundaries, like a charset or length of a password. It was a wild goose chase and hoping that pass isn't too long/complicated.
01. Jun 2013
Good solution, bike

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