downloadbrowsewarsaw's Java Crackme 1.1

Download crackme1.1.jar.zip, 2 kb (password: crackmes.de)
Browse contents of crackme1.1.jar.zip

A simple jar which takes a single number on the commandline as input. The goal is to figure out which number you need to make it print 'Correct'

This should be straightforward if you understand Java bytecode, but I threw in a trick to make disassembly more difficult.

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

Published: 14. Aug, 2012
Downloads: 182

Rating

Votes: 3
Crackme is quite bad.

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Solutions

Solution by Extreme Coders, published 19. may, 2015; download (136 kb), password: crackmes.de or browse.

Extreme Coders has not rated this crackme yet.

Solution by aodrulez, published 04. sep, 2012; download (1041 kb), password: crackmes.de or browse.

aodrulez has rated this crackme as quite nice.

Solution by lab27, published 04. sep, 2012; download (8 kb), password: crackmes.de or browse.

lab27 has not rated this crackme yet.

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Discussion and comments

idid231
20. Aug 2012
Your crackme does not run on my system, i double click, run by KEmulator, both don't work. What can i do to test my solution?
warsaw
Author
22. Aug 2012
Does KEmulator give an error of some kind? I have no idea why it wouldn't run for you.
Dark_Prince
25. Aug 2012
I have JRE on my system but when i double clicked on your crackme(running through java SE platform binary) it is not opening......what is the problem? same problem for your crackme 2.1.
d0ping
25. Aug 2012
>>>it is not opening.
I guess, it's because of crackme's nature! It's a console app.
to start: run in your console:
java -jar "path/crackme.jar"
warsaw
Author
26. Aug 2012
More specifically, you need to do java -jar "path/crackme.jar" yournumberhere
d0ping
26. Aug 2012
>>>More specifically, you need to do java -jar "path/crackme.jar" yournumberhere
somebody can consider this as a hint)
aodrulez
28. Aug 2012
duh! i submitted a solution & realized i've made a stupid mistake in it. Have made a corrected version but i guess i cant reupload. :-/
aodrulez
28. Aug 2012
nevermind. :) figured it out.

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