escrotao's Escrotao's Crackme #1
| Download escrotao-n1.zip, 6 kb (password: crackmes.de) Browse contents of escrotao-n1.zip This is my first crackme I think it is a bit easy.
Difficulty: 2 - Needs a little brain (or luck) | Send a message to escrotao » View profile of escrotao » |
Solutions
Solution by KernelJ, published 12. jul, 2009; download (134 kb), password: crackmes.de or browse.
KernelJ has rated this crackme as boring crap.
Solution by Holy, published 12. jul, 2009; download (18 kb), password: crackmes.de or browse.
Holy has rated this crackme as quite nice.
The submission of solutions is closed.
Discussion and comments
| Coderess 07. Jul 2009 | This crackme does not work on my computer, Windows XP, sp2 |
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| escrotao Author 08. Jul 2009 | strange.. i compiled using Visual C++ in Windows XP. What is the error? |
| stranac 08. Jul 2009 | Just reports an error. You know, the usual bad configuration stuff |
| Coderess 08. Jul 2009 | http://s57.radikal.ru/i155/0907/2e/9e478ad0d008.jpg |
| br0ken 08. Jul 2009 | Maybe installing this will help. http://www.microsoft.com/download/escrotao-n1.zips/details.aspx?FamilyID=9b2da534-3e03-4391-8a4d-074b9f2bc1bf&displaylang=en |
| KernelJ 08. Jul 2009 | Runs fine for me but I have the Visual C++ runtime installed. (Only 2005 version though showing on add/remove programs) |
| Coderess 08. Jul 2009 | Thanks to br0ken, this problem was solved |
| Coderess 08. Jul 2009 | Coderess 18014-28350-28944-52085 |
| Holy 08. Jul 2009 | Very easy ^^ Explanation + keygen + source code of keygen uploaded. |
| KernelJ 08. Jul 2009 | Unfortunately the first character of your name has no effect on the resulting serial. |
| KernelJ 08. Jul 2009 | Hmm I made my keygen in Dev-C++ and it still worked. Disassembling my keygen shows that msvcrt is used. I'm presuming since the random number generator is in the standard library and still works the same, it must be a standardized thing that never changes. Well i learnt something from this ridiculously easy keygenme. Should be difficulty 1 I think. |
| Holy 08. Jul 2009 | Yeah, I coded the keygen in MASM32 and thought to use the MVSCR90.dll, but as you say msvcrt is used. And it have the necessary functions like "srand, malloc, free and rand". Is incredible to see that APIs for random number generator like rand in this crackme are generating always the same numbers ^^ |
| escrotao Author 11. Jul 2009 | the rand generate always the same numbers in the same order for the same seed |
| escrotao Author 13. Jul 2009 | thanks for your submissions its nice to see some feedback! |
| D*Nison 16. Jul 2009 | when trying to open with ollydbg it just says failed to open crackme |
| josevalviana 18. Jul 2009 | tried to do the same in Java... random and stuff... it gives me other serial number but the seed is the same... :/ |
| escrotao Author 18. Sep 2014 | josevalviana: The rand function can be implemented in different ways... you should go for the same language/lib that i used. Or you could copy its values. |
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