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Hooking SendTo

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blackmorpheus
Expert Cheater

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Joined: 05 Apr 2008
Posts: 159

Posted: Mon Jan 12, 2009 4:27 pm Post subject: Hooking SendTo

Hi,

I have a few problems. I am trying to hook the ingame SendTo function ( not ws2_32.dll) . This is the function ( IDA pro) :

Code:

int __cdecl sub_474B1D(SOCKET s,char *buf,int len,int flags,u_long hostlong,__int16);

This is my hook:

Code:

int (__cdecl *SendTo_o)(SOCKET s, char *buf, int len, int flags, unsigned long hostlong,__int16);

int __cdecl SendTo_t(SOCKET s,char *buf,int len,int flags,unsigned long hostlong,__int16)
{
MessageBoxA(NULL, "SendTO is called!", "info", MB_OK);
return SendTo_o(SOCKET s, char *buf, int len, int flags, unsigned long hostlong,__int16);
}

SendTo_o = (int (__cdecl *)(SOCKET,char *,int,int,unsigned long,short))DetourFunction((PBYTE)0x00474B1D,(PBYTE)SendTo_t);

Now is my first question:
1. How can i put the bytes that get send, into a .txt file?
You can just read the buf and the bytes are in there i think, but how to log them?

2. I get a compile error: error C2275: 'SOCKET' : illegal use of this type as an expression, cant really figure out how to fix it...
All my other hooks worked.
(I hooked IsDebuggerPresent, GetModuleFileNameA, RPM, for anti anticheat.)

smartz993
I post too much

Reputation: 2

Joined: 20 Jun 2006
Posts: 2013
Location: USA

Posted: Mon Jan 12, 2009 4:33 pm Post subject:

sprintf the bytes into a char buffer.

rapion124
Grandmaster Cheater Supreme

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Joined: 25 Mar 2007
Posts: 1095

Posted: Mon Jan 12, 2009 6:42 pm Post subject:

Add this to the beginning of your header file:

Code:

#include <winsock2.h>

Also, even if you do manage to hook the API, it will crash because you screwed up the calling convention. winsock2.h defines ws2_32.dll APIs as WSAPI.

HomerSexual
Grandmaster Cheater Supreme

Reputation: 5

Joined: 03 Feb 2007
Posts: 1657

Posted: Mon Jan 12, 2009 10:05 pm Post subject: Re: Hooking SendTo

blackmorpheus wrote:

Hi,

I have a few problems. I am trying to hook the ingame SendTo function ( not ws2_32.dll) . This is the function ( IDA pro) :

Code:

int __cdecl sub_474B1D(SOCKET s,char *buf,int len,int flags,u_long hostlong,__int16);

This is my hook:

Code:

just WriteFile buf to a text file.

CreateFile(Create new if not existant)
WriteFile(buf)
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blackmorpheus
Expert Cheater

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Joined: 05 Apr 2008
Posts: 159

Posted: Tue Jan 13, 2009 3:52 am Post subject:

rapion124 wrote:

Add this to the beginning of your header file:

Code:

#include <winsock2.h>

Also, even if you do manage to hook the API, it will crash because you screwed up the calling convention. winsock2.h defines ws2_32.dll APIs as WSAPI.

I told you, it's not a ws2_32.dll function... It's an ingame function.

And if I add winsock2.h , it creates a shitload of errors, all redefinitions from original winsock.h.. Don't know why :O

HomerSexual
Grandmaster Cheater Supreme

Reputation: 5

Joined: 03 Feb 2007
Posts: 1657

Posted: Tue Jan 13, 2009 6:12 am Post subject:

blackmorpheus wrote:

rapion124 wrote:

Add this to the beginning of your header file:

Code:

#include <winsock2.h>

Also, even if you do manage to hook the API, it will crash because you screwed up the calling convention. winsock2.h defines ws2_32.dll APIs as WSAPI.

I told you, it's not a ws2_32.dll function... It's an ingame function.

And if I add winsock2.h , it creates a shitload of errors, all redefinitions from original winsock.h.. Don't know why :O

Is this all of the code where an instance of SOCKET is used?

Also make sure the source is .cpp not .c. apparently it doesn't work as a C file
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Zand
Master Cheater

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Joined: 21 Jul 2006
Posts: 424

Posted: Tue Jan 13, 2009 6:41 am Post subject:

Put winsock2.h above windows.h in the list.

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