Master Toddy Posted January 23, 2003 Share Posted January 23, 2003 Does anybody know where I can find a working CD crack for SP/MP? I've tried a couple, but every time I join a server, it bumps me off of the server after a few seconds of playing. Link to comment Share on other sites More sharing options...
Pa3PyX Posted January 23, 2003 Share Posted January 23, 2003 I did some research on this a while ago. Here are the results (not allowed to post links though, by forum rules). For the curious... Multiplayer executable is relatively tamper proof (protected by some proprietary mechanism, probably put in place as long ago as by John Carmack for Quake 3 Arena because v1.17 was swarming with cheats that involved modified executables). It appears to verify (probably by checksumming or similar method) that the code segment of the executable has not been tampered with, some time after game startup. Simple modification of the executable (by replacing a couple of jnz's with jmp's) therefore does not work. As of yet, no one seems to have reverse engineered this protection mechanism (in order to come up with such a modification that would be undetectable by the check), thus eliminating the so called "pure server hacks" and "aimbots". To my knowledge, all working cracks for jk2mp.exe involve a process memory patcher. It simply launches an unmodified executable, then, after some time, applies the necessary patch on the code segment in memory... Single player executable does not feature this kind of tamper protection, and can be cracked relatively easily. Link to comment Share on other sites More sharing options...
Master Toddy Posted January 23, 2003 Author Share Posted January 23, 2003 Thanks for the quick response, I was suspecting something like your answer . Oh well, I guess I will have to continue swapping my Battlefield 1942 and Jedi Knight II CD's Link to comment Share on other sites More sharing options...
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