diablo2oo2 Posted April 21, 2009 Share Posted April 21, 2009 (edited) diablo2oo2's Crackme #10-----------------------------------------+name: d2k2.crkme.10.exesize: 19 kbcode: masm32date: 21.04.2009-----------------------------------------+About:A new keygenme for advanced keygenners.Try to make a real keygen! Don't give up!-----------------------------------------+Rules:1) No patching2) Find serial for your name3) Make a Keygen =)-----------------------------------------+Solutions go here:e-mail : diablo2oo2[at]gmx[dot]neti will upload only solutions with included sourcecode. A tutorial is optional.Download the crackme here: http://diablo2oo2.cjb.net Edited April 21, 2009 by diablo2oo2 Link to comment Share on other sites More sharing options...
till Posted April 22, 2009 Share Posted April 22, 2009 (edited) Hi diablo, A really funny keygenme, wasn't too hard though. I like the problem behind it. But sadly it has a mayor flaw in it (I assume you didn't want that.) 004012FB |. 57 |PUSH EDI 004012FC |. E8 47350000 |CALL d2k2_crk.00404848 00401301 |. E8 A2350000 |CALL d2k2_crk.004048A8 Overwrite all 16 bytes in EDI after the calls, you know what else happens. d2k2_10_keygen.rar Edited April 22, 2009 by Till.ch Link to comment Share on other sites More sharing options...
diablo2oo2 Posted April 22, 2009 Author Share Posted April 22, 2009 (edited) Hi diablo,A really funny keygenme, wasn't too hard though. I like the problem behind it. But sadly it has a mayor flaw in it (I assume you didn't want that.) 004012FB |. 57 |PUSH EDI 004012FC |. E8 47350000 |CALL d2k2_crk.00404848 00401301 |. E8 A2350000 |CALL d2k2_crk.004048A8 Overwrite all 16 bytes in EDI after the calls, you know what else happens. good job. its also possible to code the keygen without the "s*d***" solver. i could made the matrix bigger, then the solver would be to slow. you can also use a solvingmatrix, once you solved this puzzle, because its a special puzzle case. the problem with the bytes in edi is not a real problem. the other checks before solve this problem. i know about it. Edited April 22, 2009 by diablo2oo2 Link to comment Share on other sites More sharing options...
till Posted April 22, 2009 Share Posted April 22, 2009 Okay seems it wasn't clear to you what I meant with the flaw, This keygen "exploits" this flaw, without paying attention to any matrix.Cheersd2k2_10_keygen_flaw.rar Link to comment Share on other sites More sharing options...
diablo2oo2 Posted April 22, 2009 Author Share Posted April 22, 2009 Okay seems it wasn't clear to you what I meant with the flaw, This keygen "exploits" this flaw, without paying attention to any matrix.Cheersnow i understand. thank you. Link to comment Share on other sites More sharing options...
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