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Problems with injecting a dll

 
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NotReq
Expert Cheater
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Joined: 02 Jan 2007
Posts: 201
PostPosted: Sat Nov 03, 2007 4:38 pm    Post subject: Problems with injecting a dll Reply with quote
Hi all, I'm constantly getting a rather annoying error while injecting a dll but I can't find what's the problem.

Basically I hook CreateProcessA API and check when a certain applicaion starts


Code:
      invoke strcmp, eax, addr szGameMon
      .IF eax==1
         invoke  OutputDebugString, addr szInjectString
         invoke injectRoutineEX, dword ptr ds:[esp+40]
     .ENDIF


Where dword ptr ds:[esp+40] is a pointer to PROCESS_INFORMATION structure. In my injectRoutineEX I get the just created in CreateProcessA API handle to the process

Code:
    push    EDI
    mov     EDI, procInfo
    mov     eax, ds:[EDI]
    mov     realHandle, eax


then I do the usual routine with allocating needed memory region using VirtualAllocEx, copy the dll's name there, getting LoadLibraryA's address etc, I double checked everything and it works, then I call


Code:
invoke  CreateRemoteThread, realHandle, NULL, 0, dwLoadLibraryA, allocatedStr, 0, NULL


and it successfully returns the created thread handle and that's where GG/GM crash, it seems that the dll don't even get injected and it seems to be GG's problem... so I'm completly lost here, is thera good code sample written in asm of injecting dlls?
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Renkokuken
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Joined: 22 Oct 2006
Posts: 3249
PostPosted: Sat Nov 03, 2007 5:27 pm    Post subject: Reply with quote
Here.
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