boonz's Keygenme #2
| Download KeyGenMe2.zip, 59 kb (password: crackmes.de) Browse contents of KeyGenMe2.zip Ho!
Difficulty: 2 - Needs a little brain (or luck) | RatingWaiting for at least 3 votes View profile of boonz » |
Solutions
Solution by Ank83, published 20. dec, 2006; download (392 kb), password: crackmes.de or browse.
Ank83 has rated this crackme as awesome.
Discussion and comments
| boonz Author 20. Dec 2006 | excellent work, Ank83! a christmas-candy to whom is able to tell me what the trivial name of the recursive function is... |
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| gibz 21. Dec 2006 | Factorial? Though a floating-point version. You also use mathmatical nCr, though I'm not sure if it was intended as such :) Looks like Ank83 beat me, but I wrote a keygen for it as well. I'll write up a longer tut to explain more of the source program in detail, I'll upload it with a C/C++ keygen sometime tomorrow. |
| gibz 21. Dec 2006 | Oh and one bit of silliness - you don't do a minimum-length check on the username, so names of 1-3 characters will have a (working) serial number of "0". Something to keep in mind for future apps :) |
| boonz Author 21. Dec 2006 | yep, you're right gibz, factorial :) |
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