Thread: Problem with Send packet at hooked recv/send

Hey guys why this source doesnt work for me? Please help me whats the mistake?

If the programm start with the injected dll, it crash and i get a windows error. More i dont know.

Code:

// dllmain.cpp : Definiert den Einstiegspunkt für die DLL-Anwendung.
#include "stdafx.h"
#include <iostream>
#include <fstream>
#include <string>
#include <windows.h>
#include <winsock2.h>

#pragma comment(lib,"ws2_32.lib")

using namespace std;

typedef int ( WINAPI *realConnect )(SOCKET s, const struct sockaddr* name, int namelen );
typedef int (WINAPI* realRecv)(SOCKET socket, const char* buffer, int length, int flags);
typedef int (WINAPI* realSend)(SOCKET socket, const char* buffer, int length, int flags);

realSend o_send;
realRecv o_recv;
realConnect o_connect;

SOCKET Bot;

int WINAPI my_connect( SOCKET s, const struct sockaddr* name, int namelen)
{
	WORD port = ntohs((*(WORD*)name->sa_data));
	sockaddr_in *sockaddr = (sockaddr_in*)name;
	sockaddr->sin_port = htons(16000);
	if ( port != 80 )
	{
	sockaddr->sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
	}
	return o_connect(s,name,namelen);
}

int WINAPI my_send(SOCKET socket, const char* buffer, int length, int flags) 
{
	send(Bot, buffer, length, flags);
	return o_send(socket, buffer, length, flags);
}

int WINAPI my_recv(SOCKET socket, const char* buffer, int length, int flags) 
{
	send(Bot, buffer, length, flags);
	return o_recv(socket, buffer, length, flags);
}

BOOL APIENTRY DllMain( HMODULE hModule,
                       DWORD  ul_reason_for_call,
                       LPVOID lpReserved )
{
	switch (ul_reason_for_call)
	{
	case DLL_PROCESS_ATTACH:
		//Socketpart
		WSADATA wsa;
		WSAStartup(MAKEWORD(2,2), &wsa);

		Bot=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
		SOCKADDR_IN addr;
		memset(&addr,0,sizeof(SOCKADDR_IN)); 
        addr.sin_family=AF_INET;
        addr.sin_port=htons(16000);
        addr.sin_addr.s_addr=inet_addr("127.0.0.1");

		short status;
		status=connect(Bot,(SOCKADDR*)(&addr),sizeof(addr));
		if (status==SOCKET_ERROR)
		{
			MessageBox(NULL, TEXT("Bot dont exists"), TEXT("Error"), MB_OK);
			exit(0);
		}
		/////////////////////////////////////////////////////
		HMODULE hWS32 = LoadLibraryA( "ws2_32.dll" );
		FARPROC pConnect = GetProcAddress(hWS32,"connect");
		FARPROC pSend = GetProcAddress(hWS32,"send");
		FARPROC pRecv = GetProcAddress(hWS32,"recv");
		//DetourCreate((LPVOID)pConnect,my_connect,5);
		//__asm mov [ o_connect ], eax;
		DetourCreate((LPVOID)pSend,my_send,5);
		__asm mov [ o_send ], eax;
		DetourCreate((LPVOID)pRecv,my_recv,5);
		__asm mov [ o_recv ], eax;
		break;
	}
	return true;
}