cryptcat's KeygenmeL
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Difficulty: 2 - Needs a little brain (or luck) | Send a message to cryptcat » View profile of cryptcat » |
Solutions
There are no solutions to this crackme yet. Have you solved it? Please write a tutorial and submit it here!
Discussion and comments
| hound 21. Jun 2007 | uh, just wonder. Why are these crackme's so big?? 1.5mb is huge. |
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| cryptcat Author 21. Jun 2007 | They are all programmed with RTTI and garbage collected languages. |
| jseitz 22. Jun 2007 | Rather new to this, is it required that you write a keygen? If so in what language? |
| zairon Moderator 22. Jun 2007 | From the crackme rules: "Write a keygen for the program." You can use your preferred language, you decide. Please, submit source code too :) |
| cryptcat Author 27. Jun 2007 | Has anyone reversed it? |
| Zaphod 29. Jun 2007 | I can find where in memory the crackme stores the name and serial I write, but I just can't find where and how it uses this information! I have of course tried all kinds of breakpoints on name and serial, but that doesn't get me anywhere. Arrgh! Is the program written in LISP? ( There is this string: $L$I$S$P in several places ). I know absolutely nothing about LISP other than it is a programming language of some kind. If it is LISP, does one need a special tool to crack it? |
| cryptcat Author 29. Jun 2007 | You are correct. It is written in Lisp. |
| cryptcat Author 04. Jul 2007 | Everything in lisp is store as a list. |
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