ReWrit's ReWrit's Crackme #11
| Download ReWrit__s_Crackme_#11.zip, 148 kb (password: crackmes.de) Browse contents of ReWrit__s_Crackme_#11.zip ReWrit's Crackme #11
Difficulty: 2 - Needs a little brain (or luck) | RatingWaiting for at least 3 votes View profile of ReWrit » |
Solutions
Solution by ForFun, published 27. feb, 2009; download (13 kb), password: crackmes.de or browse.
ForFun has rated this crackme as quite nice.
Discussion and comments
| zero5 21. Feb 2009 | nice exercise for patching, was quite easy but i'm too lazy for writing a keygen :P i wouldnt rate it as very easy, but as "Needs a little brain" because of the "anti debugger protection" lol |
|---|---|
| ForFun 26. Feb 2009 | I disagree.... I dont think MD5 hashing and modulus aritmetics are newbie stuff ! Just my 5 cents ;) |
| zero5 27. Feb 2009 | yeah, depends on how u wanna solve it.. its easy to patch but much harder to keygen |
| MACH4 28. Feb 2009 | @ForFun Nice keygenning tute mate! I would have thought d3 MACH4 |
| ReWrit Author 28. Feb 2009 | 182 download and only one rating? come on guys.. its allways fun to see your crackme get rated =) =P |
| JukJuk 28. Feb 2009 | damn guys, i am new here, so im trying to download the crackmes to learn, but most of the times i miss some points, like: what is it to place a RETN, like ForFun said, what is it to run after placing this RETN and why the of the target still existing is important? thx in advance |
| ForFun 28. Feb 2009 | @JukJuk: I'm not sure what you mean ? I guess you refer to the anti-debugging trick !? I mean you have to replace the code at 401390 and 401424 with the command RETN. Or as the tut also state: use Olly Advance or similiar plug-in :) @ReWrit: Maybe I'm the only one who solved it 8P !? |
| MACH4 28. Feb 2009 | @ReWrit Nice keygenme btw! The problem might have been it's published low difficulty rating, must admit I didn't look at it for that reason! @ForFun Sorry a typo, I meant to agree with you difficulty 3-4. btw small question. In your asm source, Why didn't you use GetModulaHandle ? and ExitProcess, eax Not complaining, just wondered? @Mods Why doesn't the rating reflect what you select in the rating box? ForFun gives a rating of quite nice. but its not there in the select box? MACH4 |
| MACH4 28. Feb 2009 | @ReWrit, It's not much point giving several solutions if a good one is already posted, unless someone uses an interestingly different way to solve it! MACH4 |
| ForFun 28. Feb 2009 | @MACH4: I used template in RADasm to create the window creation, but the argument used by ExitProcess is simply an exitcode. You dont need to use handle of module. You can use any value you want ! |
| ReWrit Author 28. Feb 2009 | changed it to lvl 2 now coz some said it was too hard for lvl 1 |
You may leave your comment, thoughts and discuss this crackme with other reversers here.
Acting childish will not be tolerated.
HTML and such will be left as-is, so don't try.