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DeviantGeek · Posted: Thu Aug 21, 2008 9:28 am Post subject: [help][c++]microsoft detours

im detouring a function in a game and im using microsoft detours to do it. my detour works fine. however, at the login screen when you hit login, the game does a check on itself to make sure nothing has been tampered with. so i wait till the game state changes to character select then i detour everything. when i log out to maybe say to change accounts, at the login screen i remove the detour (DetourRemove) so the game will think nothing has happened to itself and let me log in. then comes my problem. DetourFunctionWithEmptyTrampoline fails when i try to Re-detour my function. i checked the code in memory to see if something was preventing it from doing the detour again and cant seem to figure out why its not working. is there something that doesnt allow a function to be detoured again after its already been detoured once before?

pkedpker · Posted: Thu Aug 21, 2008 1:19 pm Post subject:

make your own detours inline asm{} dont use microsoft detours they are detected most likely.. plus i dont understand them lol but yah.. inline is much easier i believe after you learn how to use it.

u have to pick from stdcall (no sharing) fastcall (sharing instance) almost same like thiscall and if your detour requires to set esp to number of paramaters then its _cdcdel

Fuzz · Posted: Thu Aug 21, 2008 5:20 pm Post subject:

pkedpker · Posted: Thu Aug 21, 2008 5:33 pm Post subject:

bro i used microsoft detours like a 5 months ago when i knew nothing.

from what i understand they strap in a whole lib file to whatever you inject so if the gameguard scans memory for parts of that lib file some kind of pattern then of course its detected.

Your reply you posted Fuzz is less meaningful and more ignorantthen mines. Unlike me im trying to point him in a different direction like using VirtualProtect + memcpy + inline to do detours for less detectability

GMZorita · Posted: Thu Aug 21, 2008 5:46 pm Post subject:

sponge · Posted: Thu Aug 21, 2008 7:27 pm Post subject:

before you give advice pkedpker, learn some english; its hardly legible and to someone that is requesting help, it will only confuse them more.

DeviantGeek · Posted: Thu Aug 21, 2008 7:55 pm Post subject:

yea i was kinda heading towards my own detours, but meh, im lazy and dont wanna figure out the basics of doing it by hand lol and i never checked if detours actually loaded a library for itself. pretty sure its all done with inline functions etc in the header they give you. but i only scanned the thing for something and didnt really look at it closely

atom0s · Posted: Sat Aug 23, 2008 6:19 am Post subject:

rapion124 · Posted: Sat Aug 23, 2008 6:55 am Post subject:

atom0s · Posted: Sat Aug 23, 2008 7:16 am Post subject:

Nukus · How do I cheat? Reputation: 0 Joined: 07 Sep 2009 Posts: 2

I prefer more BoxedApp SDK ( boxedapp[dot]com ) then Detours.