The Official Bytecode Club Crackme's

I've only got 6 levels completed, they're targeted at beginners, so if you're experienced with Java Reverse Engineering please wait until I add more levels (Or help me add more levels).
Example launch command: java -cp crackme.jar the.bytecode.club.crackme.level1.Main passw0rd

Beta 1.0: http://the.bytecode.club/crackmes_b1.0.jar (6 levels)
Beta 2.0: http://the.bytecode.club/crackmes_b2.0.jar (7 levels + obfuscation)

I vouch for these great challenges all completed 🙂 good luck guys

I vouch for these great challenges all completed 🙂 good luck guys

If you've got any suggestions for the next levels, feel free to let me know!

I must have fallen asleep for a few days and miss these. Thanks for the releases. Looking forward to the rest of them.

Great challenges.
Would be a little harder if the md5 hashes were different and couldn't be looked up online.. 😛

Great challenges.
Would be a little harder if the md5 hashes were different and couldn't be looked up online.. 😛

Haha, I've been meaning to more dedicate some time to this. If you'd like to collab with me I could put this on github and we could work on this further.

I've added beta 2.0, contains heavy obfuscation + level 7.

I'll be leaving 1-6 unobfuscated in the next version, for now they're obfuscated.

You have wrong path in link, it should be
http://the.bytecode.club/crackmes_b2.0.jar

I've only got 6 levels completed, they're targeted at beginners, so if you're experienced with Java Reverse Engineering please wait until I add more levels (Or help me add more levels).
Example launch command: java -cp crackme.jar the.bytecode.club.crackme.level1.Main passw0rd

Beta 1.0: http://the.bytecode.club/crackmes_b1.0.jar (6 levels)
Beta 2.0: http://the.bytecode.club/crackmes_b1.0.jar (7 levels + obfuscation)

Cheers, I'll fix that

Level 5 of Beta 2.0 appears to be broken, you can input anything and it spits out "Cracked"