downloadbrowsewarsaw's Java Crackme 1.2

Download, 761 b (password:
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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


Waiting for at least 3 votes
(we have only 2).

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

xcodevn has not rated this crackme yet.

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

blin00 has rated this crackme as quite nice.

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Discussion and comments

08. Apr 2013
The upload seems to be incomplete or damaged.
08. Apr 2013
@mopy: why do you think so?
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.
08. Apr 2013
@mopy java -jar crackme1.2 serial
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?
14. Apr 2013
Yes - I submitted a solution (still in queue...)
16. Apr 2013
Very good Crackme!
I have solved it.

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