lord_Phoenix's CrackMe #6
| Download crackme.6.other-rev.zip, 106 kb (password: crackmes.de) Browse contents of crackme.6.other-rev.zip Yeah, another crackme =) Now without crypto, coz i have some non-crypto ideas.. Try this one.
Difficulty: 3 - Getting harder | RatingWaiting for at least 3 votes View profile of lord_Phoenix » |
Solutions
Solution by deroko, published 14. jun, 2006; download (81 kb), password: crackmes.de or browse.
deroko has not rated this crackme yet.
Discussion and comments
| Ox87k 09. Jun 2006 | wow! Cool gfx and very bastard tricks! but... i understand the algo only seeing the right serial!!!!! I think that the program get the hex value of every char of the name except of the last one and put in in inverse order. At last it makes the sum of every char's name and obtain the first value of serial. Something like this: Ox87k 417(sum)37('7')38('8')78('x')4F('O') = 4173738784F Is my thought right? :D Thanks! |
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| Ox87k 09. Jun 2006 | sorry... get the hex value of only first 4 char's name! |
| Ox87k 10. Jun 2006 | another sorry for multiples post but ur crackme seems to have a bug with name's lens > than 20 chars.. is it right? |
| lord_Phoenix Author 10. Jun 2006 | hm.. u're right in some ur thoughts =) try to understand algo from code, not using deduction =) |
| Ox87k 10. Jun 2006 | i don't understand how to bypass the tricks.. so for this reason i used deduction :P some helps for bypass they?? |
| lord_Phoenix Author 10. Jun 2006 | do u see int3? do u see SEH? =) |
| Ox87k 10. Jun 2006 | hum... yeah but is a jungle :| damned! |
| lord_Phoenix Author 10. Jun 2006 | see in deeps of my handler and... =) coz if algo would be more complicated - ur deduction method wont work ;) |
| Ox87k 10. Jun 2006 | my method works only if the name has len < than 20 chars. i try to understand ur crackme.. however very g00d j0b! ;) |
| Slip 11. Jun 2006 | hehe =) preved, krasavcheg ! |
| takada 13. Jun 2006 | a simple crackme with little trick I only patch 1 byte at 00402149 /75 09 JNZ SHORT crackme.00402154 Yeah, this crackme is good |
| deroko 13. Jun 2006 | I think you should patch p-code, not interpreter =) |
| lord_Phoenix Author 14. Jun 2006 | http://omega.intechhosting.com/~access/forums/index.php?act=Attach&type=post&id=2017 deroko :: submit it here %) |
| deroko 14. Jun 2006 | submitted same day as the one at arteam forum, still waiting for approval :) |
| Ox87k 14. Jun 2006 | deroko, great solution! i now understand all :) lord_Phoenix very g00d crackme even if my keygen with my deduction works perfectly ;) |
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