downloadbrowsewarsaw's Java Crackme 1.2

Download crackme1.2.zip, 761 b (password: crackmes.de)
Browse contents of crackme1.2.zip

The idea for this crackme is similar to 1.1, but it should prove a little harder.

Note: This crackme was tested with the official JVM (Hotspot). It is not guaranteed to work with alternative JVM implementations.

Difficulty: 3 - Getting harder
Platform: Multiplatform
Language: Unspecified/other

Published: 07. Apr, 2013
Downloads: 126

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Solutions

Solution by xcodevn, published 26. mar, 2014; download (1 kb), password: crackmes.de or browse.

xcodevn has not rated this crackme yet.

Solution by blin00, published 23. apr, 2013; download (738 b), password: crackmes.de or browse.

blin00 has rated this crackme as quite nice.

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Discussion and comments

mopy
08. Apr 2013
The upload seems to be incomplete or damaged.
cyclops
Moderator
08. Apr 2013
@mopy: why do you think so?
warsaw
Author
08. Apr 2013
@mopy, I just downloaded and tested it, and it runs just fine.

You need to run it from the command line with your answer as a command line argument.
boonz
08. Apr 2013
@mopy java -jar crackme1.2 serial
Gogil
12. Apr 2013
I have disassemble the Java bytecode.
Key checking algorithm was very simple. (mul, add)
but it is impossible. because decimal point is lost.

This algorithm is possible?
blin00
14. Apr 2013
Yes - I submitted a solution (still in queue...)
Gogil
16. Apr 2013
Very good Crackme!
I have solved it.

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