warsaw's Java Crackme 3
| Download crackme3.zip, 3 kb (password: crackmes.de) Browse contents of crackme3.zip As before, you need to figure out the key to make it print "Correct!". However, this one should be much harder.
Difficulty: 5 - Professional problem to solve | Send a message to warsaw » View profile of warsaw » |
Solutions
Solution by ReWolf, published 19. feb, 2014; download (910 kb), password: crackmes.de or browse.
ReWolf has rated this crackme as awesome.
Discussion and comments
| stare himemy 17. Oct 2012 | I have downloaded he crackme3.zip and unzipped it but when I click on it nothing happens. Can somene help me. Send me the info to stare.deo@gmail.com |
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| Dark_Prince 17. Oct 2012 | stare himemy, it is a console type app, open command prompt and type java -jar crackme3.jar "Serial key" |
| 09iopiop 21. Oct 2012 | What Dark Prince said is wonderful!It really solved the problem. |
| krankenversicherungsvergleiche 15. Aug 2013 | For some reason my Java decompiler is giving me an error that it can't open it because it might be corrupt, etc. |
| warsaw Author 18. Aug 2013 | kranken: I'd be very impressed if you could get a decompiler to work on this. Out of curiosity, which one did you try? |
| krankenversicherungsvergleiche 27. Aug 2013 | I tried DJ Java Decompiler. I got some type of code trying out Java DeCompiler by Prabhu but it's kind of weird because it's not true Java code. |
| krankenversicherungsvergleiche 27. Aug 2013 | What I see is like a combination between Java code and assembler. |
| krankenversicherungsvergleiche 27. Aug 2013 | Correction: It's the Java bytecode I got. Sorry for the numerous comments. |
| krankenversicherungsvergleiche 28. Aug 2013 | Seems that the number from the constant pool at #33 and the number that is called by ldc #33 are not the same when I disassembled it. It seems that the 9 is missing off the end... Does anybody else have this problem? |
| warsaw Author 29. Aug 2013 | You're using a bad disassembler Anyway, if you don't know enough to figure out things like this, you should probably be trying one of my easier challenges instead. I don't think you'll be able to solve this one even with the right tools. |
| ReWolf 16. Feb 2014 | Solved, solution submitted, meanwhile it can be read here http://blog.rewolf.pl/blog/?p=856 |
| warsaw Author 16. Feb 2014 | Congratulations. I'll do a writeup of the process behind creating the crackme when I have time. |
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