redoC's Krypto Krakme
| Download krakme.zip, 42 kb (password: crackmes.de) Browse contents of krakme.zip It's little different crackme, anyway kinda easy. First you must find unlock password (it's quite short) than register the program.
Difficulty: 3 - Getting harder | Send a message to redoC » View profile of redoC » |
Solutions
Solution by bike, published 01. jun, 2013; download (95 kb), password: crackmes.de or browse.
bike has rated this crackme as quite nice.
Discussion and comments
| Zuma555 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? |
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| redoC Author 04. Nov 2012 | it's true, bruting allowed |
| tamaroth Moderator 06. Nov 2012 | Which implementation of AES did you use? |
| redoC Author 08. Nov 2012 | try this http://www.codeproject.com/Articles/57478/A-Fast-and-Easy-to-Use-AES-Library ...but I think you dont necessarily need source code to break it |
| tamaroth Moderator 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 ... |
| redoC Author 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 |
| Dcoder 09. Nov 2012 | For what it's worth, I can confirm that the encryption it works as advertised by redoC. Cool challenge. |
| tamaroth Moderator 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. |
| redoC Author 01. Jun 2013 | Good solution, bike |
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