Ghiribizzo's Thread Tuesday, 23-Feb-99 14:42:58 Well, I just got passed the url to this messageboard and it is quite flattering to see my crackme as a project. My tools of choice for cracking this program would be: Hiew, IDA and Debug. You will also need a compiler at some point to write the keygen. Forget about BPINT 21, it's too easy to get in the habit of breaking in on this and that when you've mainly been exposed to windows cracking. My crackmes have very little 'useless' code. You will see, in fact, that if you look under hiew or IDA that a BPINT 21 will land you within the first few instructions, but if you broke in, you would not be sure of how you got there nor how many lines were traced. You can get an immediate feel for what is happening by looking at the IDA disassembly and should be able to recognise the first (easy parts) of the keyfile (name & checksum). This was mainly added to make the scheme a semi-hardwired as opposed to a fully hardwired key. The meat of the crackme lies later on and I will leave you to do that yourself.. though I have left some clues in the code ;) ~~ Ghiribizzo Ghiribizzo |
Ghiribizzo's Thread (Ghiribizzo) (23-Feb-99 14:42:58) |