Teddy Rogers Posted April 25, 2007 Share Posted April 25, 2007 Seeing as a few people seem to be "anti Olly'ing" recently I thought this crackme from crackme.de may be of interest to a few people here. A little crackme just for fun.1) bypass the anti debug / junk 2) bruteforce / keygen 3) write a tut rulez : use only a 'standard' version of OllyDbg (or it's not fun) no HideDebugger plugin or OllyIce or things like that. enjoy! Difficulty: 3 - Getting harder Platform: Windows Language: Borland Delphi http://crackmes.de/users/magik/anti_olly_1.0/ Anti_Olly.zip Ted. Link to comment Share on other sites More sharing options...
Teddy Rogers Posted September 6, 2009 Author Share Posted September 6, 2009 The [keygenme] tag has been added to your topic title. Please remember to follow and adhere to the topic title format - thankyou! [This is an automated reply] Link to comment Share on other sites More sharing options...
Apuromafo Posted October 12, 2009 Share Posted October 12, 2009 (edited) crackme nice. I solved some years ago (2007) in this year try to do something new, in this year, (because in English a little better) i will try first in spanish and post in english.. attach my keygen beta 1, was tested in 3 pc, if can test and work (, can improve more funtions as random for keygen value) if some bug please PM me, atached keygen+value keygen the value keygen is an analisis of 9mill of numbers tested and taked the valid key as math(number ingresed - magic value= valid key when 0f08 ) the tutorial is in work for can be released. keygen spanish for antiollydbg 1.0 by Apuromafo.zip greetings Apuromafo update:this is a great crackme,some years old post this.. was analized with more detail, and checked 9 millon of serial and in more that 1 pc.., i was understanded the algo and do the values corrects..if some one wana a keygen i was have in write text 4 but are in spanish..1) bypass the anti debug / junk ->done2) bruteforce / keygen->keygen in excel and masm 3) write a tut ->http://ricardonarvaja.info/WEB/CURSO%20NUEVO/TEORIAS%20NUMERADAS/1101-1200/1173-antiolly%20parte%201%20de%204%20Apuromafo.7z http://ricardonarvaja.info/WEB/CURSO%20NUEVO/TEORIAS%20NUMERADAS/1101-1200/1174-antiolly%20parte%202%20de%204%20Apuromafo.7zhttp://ricardonarvaja.info/WEB/CURSO%20NUEVO/TEORIAS%20NUMERADAS/1101-1200/1175-antiolly%20parte%203%20de%204%20Apuromafo.7zhttp://ricardonarvaja.info/WEB/CURSO%20NUEVO/TEORIAS%20NUMERADAS/1101-1200/1176-antiolly%20parte%204%20de%204%20Apuromafo.7z Edited January 27, 2016 by Apuromafo Updated Link to comment Share on other sites More sharing options...
requizm Posted May 23, 2020 Share Posted May 23, 2020 I can't bypass anti-debug stuff. I'd do: -IsDebuggerPresent bypass: easy -"Debugger Detected" messagebox bypass: 00477B12 . 74 1D JE SHORT Anti_Oll.00477B31 ; important conditial jump, i have to jump 0x477B31 to bypass 00477B14 . BB E8030000 MOV EBX,0x3E8 00477B19 > 8D55 F0 LEA EDX,DWORD PTR SS:[EBP-0x10] 00477B1C . B8 987C4700 MOV EAX,Anti_Oll.00477C98 00477B21 . E8 C6DFFFFF CALL Anti_Oll.00475AEC 00477B26 . 8B45 F0 MOV EAX,DWORD PTR SS:[EBP-0x10] ; eax = ASCII "Debugger Detected ! " 00477B29 . E8 5635FBFF CALL Anti_Oll.0042B084 ; create message box, and wait till user input (click ok button) 00477B2E . 4B DEC EBX ; ebx always greater than 1 00477B2F .^75 E8 JNZ SHORT Anti_Oll.00477B19 ; so this is basically infinite loop -OutputDebugString bypass: I made the start of the function 'ret 4'. But ı'm stuck here. Link to comment Share on other sites More sharing options...
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