Hack Forums
Trouble with decrypting Blowfish-CBC - Printable Version

+- Hack Forums (https://hackforums.net)
+-- Forum: Hacks, Exploits, and Various Discussions (https://hackforums.net/forumdisplay.php?fid=45)
+--- Forum: Blackhat • Red Team • Offensive Security (https://hackforums.net/forumdisplay.php?fid=447)
+---- Forum: Cryptography, Encryption, and Decryption (https://hackforums.net/forumdisplay.php?fid=126)
+---- Thread: Trouble with decrypting Blowfish-CBC (/showthread.php?tid=5878258)



Trouble with decrypting Blowfish-CBC - Liusad - Aug 26, 2018

Hey everyone,

I'm having trouble decrypting a text asset file from an android game. I've figured out it's encrypted with bluefish-cbc, but even though I seem to have found the key and IV by tearing apart the assemly-csharp.dll I can't get it to decrypt properly. I have also decompiled it in IDA, but that haven't given me anything as of yet even though that may be because of lack of experience I guess. 

Can anyone help me find what I'm missing? I can't find reference to any salt or relevant padding as of right now.

I can provide pastebins of what I believe to be the relevant excerpts from the .dll (or the whole thing, of course) and from one of the encrypted files via PM. 

Thanks in advance,
Liusad