antofik's VVM keygenme: level 1
| Download VVMachine.zip, 5 kb (password: crackmes.de) Browse contents of VVMachine.zip A keygenme with a very simple checking algo, but realized at embded virtual machine (embded into another VM).
Difficulty: 5 - Professional problem to solve | Send a message to antofik » View profile of antofik » |
Solutions
Solution by Babo0n, published 13. apr, 2008; download (11 kb), password: crackmes.de or browse.
Babo0n has rated this crackme as quite nice.
Discussion and comments
| Babo0n 13. Apr 2008 | Interesting Crack-me ! I've finished to studie all the VMs and I'm coding a keygen I think it could be more interesting with junk and a best utilisation of all the opcodes of your first VM (I hope my bad english will not hurt your eyes ;) ) |
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| Babo0n 13. Apr 2008 | (PS : your TLS implementation is bad and crash the keygen-me on my second computer) |
| antofik Author 14. Apr 2008 | Well, Babo0n, good work :-) As for TLS, yeah, it could be. Because I was a bit in hurry when added that callback, and probably have easily missed something. Well, ought to be more attentive next time:-). And what about junk - really I don't like to make a jumble from code. Firstly because the main idea was not to make you sit and spit upon the awful code :-) Understanding the VM is a routine, thus I don't want to do it more boring for you. Well, next level VMachines will be much more complicated and, hope, interesting. |
| hinte! 15. Aug 2009 | nice and simple name: hinte^2oo9 serial: 4vxEB*;85(0-*'$!( sum(name) == sum(serial (+-^|&+) Russia) && sum(name) == sum(serial) + 1 && sum_div(name) == sum_div(serial) probably there is no keygen that generates nice looking serials |
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