starzboy's De-KryptZo - 2
| Download De-KryptZo2.zip, 2 kb (password: crackmes.de) Browse contents of De-KryptZo2.zip Greetz PPL ...
Difficulty: 3 - Getting harder | RatingWaiting for at least 3 votes View profile of starzboy » |
Solutions
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Discussion and comments
| ReDucTor 26. Mar 2007 | nicely done, however would have been better to have some sort of check for when the decryption key isnt correct, the code above the encrypted code should not be there i reckon, reveals to much about the encrypted code. |
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| Kostya 27. Mar 2007 | Lol. I'm entering my name: Kostya, & any key (length 4 chars). And it works! )) Haven't tryed it yet, but this was just for test.. So I'm soo lucky x) |
| starzboy Author 27. Mar 2007 | lolz ... Kostya ur lucky ... i hope the others dont get too lucky like you .. lolz |
| Zaphod 05. Apr 2007 | I didn't have Kostya's luck so I had to do it the hard way! I found a working name/serial-combination, but not without a certain amount of bruteforce. Can it really be done without bruteforcing? |
| jE! 15. Nov 2007 | hellllo, AUTHORRE! i was looking in your crackme & found some strange things: 1. cmp eax, 3 ja ... "more than 4 chars plz" ??? Q: so more then 3 or 4? ;; 2a. ;00401116 movsx ebx, byte ptr [edi+eax+1] name_string calculation begins from 2nd char, so skipsss first char & includes 1 NULL byte after string; is THIS ERROR or OK? ;; 2b. ;004011DD movsx ebx, byte ptr [edi+eax+5] key_string calculation begins from 6th char, so skipsss first 5 chars & includes 5 NULL byte after string; is THIS ERROR or OK? ;; Final Q: Before i start keygening, have YOU your keygen for it? (btw, how about preserving registers in DLG_FUNC;?;) |
| morecode 07. Apr 2015 | Name = Alejandra Serial 1234567890abcdef I was very lucky |
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