cerberus's keygen
| Download Cerberus.zip, 10 kb (password: crackmes.de) Browse contents of Cerberus.zip This is my first keygen.
Difficulty: 1 - Very easy, for newbies | Send a message to cerberus » View profile of cerberus » |
Solutions
Solution by hasherezade, published 05. nov, 2010; download (591 kb), password: crackmes.de or browse.
hasherezade has rated this crackme as nothing special.
Discussion and comments
| souravipc53 15. Oct 2010 | nope at offset 1320 & its done. the algorithm is also there. |
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| voila 17. Oct 2010 | Hey there , i want to confirm one thing ... do you intentionally play with 4rth character of username ?? If yes then its fine ... otherwise there is variable overflow in crackme .. |
| cerberus Author 17. Oct 2010 | Voila, I intentionally make the name with more than 4 characters |
| voila 17. Oct 2010 | Cerberus: no not that ... i know u take username more than 4 chars i.e ... see this asm code of ur crack .. I use Ida Pro lea ecx, [esp+174h+username] push 32h ; cchMax push ecx ; lpString push 3E8h ; nIDDlgItem push edx ; hDlg call ds:GetDlgItemTextA Above code will take the username and put on the stack .. say username is .. aaabaaaa at address "esp + 174 + username " then after some more code, we have code xor edx, 890428h ; add esi, edx ; cmp ecx, 9 movsx edx, [esp+174h+var_159] ----> value of var_159 is not set anywhere (explicitly by programmer ) in the programm , still you can find string at address "esp + 174 + var_159" is "baaaa" ... it is the string from 4rth char of input username ...... I hope you understand what i meant to say .. well i m newbie here , and if i m wrong , correct me ..:) ... take care |
| hasherezade 28. Oct 2010 | is self-keygenning accepted? |
| C0nqu3ror 19. Feb 2011 | I patch 2 bytes = Any words fit and removed check on the number of characters in a name |
| Cooty125 11. Mar 2011 | i can't make a keygen i don't know how offset? Cooty LNT-45272749--1825960472 |
| XLHXLH 28. Apr 2014 | Could you give me the source code for reference? |
| evaboy 12. May 2014 | This a real, nice Keygen for beginners. More of this man. |
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