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[saco] Implement CheckDuplicateD3D9Dlls

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RD42 2023-11-13 20:36:28 +08:00
parent d286182d25
commit a072f8b32d
1 changed files with 77 additions and 0 deletions
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77
saco/game/cheats.cpp Normal file
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#include "../main.h"
#include "../runutil.h"
#include <Tlhelp32.h>
DWORD dwD3D9DllBaseAddr=0;
DWORD dwD3D9DllSize=0;
typedef HANDLE (WINAPI *CREATETOOLHELP32SNAPSHOT)(DWORD, DWORD);
typedef BOOL (WINAPI *MODULE32FIRST)(HANDLE, LPMODULEENTRY32);
typedef BOOL (WINAPI *MODULE32NEXT)(HANDLE, LPMODULEENTRY32);
//----------------------------------------------------------
int CheckDuplicateD3D9Dlls()
{
CREATETOOLHELP32SNAPSHOT fnCreateToolhelp32Snapshot = NULL;
MODULE32FIRST fnModule32First = NULL;
MODULE32NEXT fnModule32Next = NULL;
HANDLE hModuleSnap = NULL;
MODULEENTRY32 me32;
int iFoundD3D9Dll=0;
char szModule[MAX_PATH+1];
DWORD dwCurImageSize=0;
DWORD dwCurDllBase=0;
BYTE szD3D9Enc[9] = {0x8C,0x66,0x8C,0x27,0xC5,0x8C,0x8D,0x8D,0}; // d3d9.dll
char *szD3D9Dec = K_DecodeString(szD3D9Enc);
BYTE szKernel32Enc[13] = {0x6D,0xAC,0x4E,0xCD,0xAC,0x8D,0x66,0x46,0xC5,0x8C,0x8D,0x8D,0}; // kernel32.dll
char *szKernel32Dec = K_DecodeString(szKernel32Enc);
BYTE szCreateToolhelp32SnapshotEnc[25] = {0x68,0x4E,0xAC,0x2C,0x8E,0xAC,0x8A,0xED,0xED,0x8D,0xD,0xAC,0x8D,0xE,0x66,0x46,0x6A,0xCD,0x2C,0xE,0x6E,0xD,0xED,0x8E,0}; // CreateToolhelp32Snapshot
BYTE szModule32FirstEnc[14] = {0xA9,0xED,0x8C,0xAE,0x8D,0xAC,0x66,0x46,0xC8,0x2D,0x4E,0x6E,0x8E,0}; // Module32First
BYTE szModule32NextEnc[13] = {0xA9,0xED,0x8C,0xAE,0x8D,0xAC,0x66,0x46,0xC9,0xAC,0xF,0x8E,0}; // Module32Next
HMODULE kernel32 = GetModuleHandle(szKernel32Dec);
fnCreateToolhelp32Snapshot = (CREATETOOLHELP32SNAPSHOT)GetProcAddress(kernel32,K_DecodeString(szCreateToolhelp32SnapshotEnc));
fnModule32First = (MODULE32FIRST)GetProcAddress(kernel32,K_DecodeString(szModule32FirstEnc));
fnModule32Next = (MODULE32NEXT)GetProcAddress(kernel32,K_DecodeString(szModule32NextEnc));
hModuleSnap = fnCreateToolhelp32Snapshot(TH32CS_SNAPMODULE, GetCurrentProcessId());
if(hModuleSnap == INVALID_HANDLE_VALUE) return 0;
me32.dwSize = sizeof(MODULEENTRY32);
if(!fnModule32First(hModuleSnap,&me32))
{
CloseHandle( hModuleSnap );
return 0;
}
do
{
strcpy(szModule,me32.szModule);
dwCurImageSize = me32.modBaseSize;
dwCurDllBase = (DWORD)me32.modBaseAddr;
if(!strcmp(szD3D9Dec,szModule))
{
dwD3D9DllBaseAddr = dwCurDllBase ^ 0xACACACAC;
dwD3D9DllSize = dwCurImageSize;
iFoundD3D9Dll++;
}
} while( fnModule32Next( hModuleSnap, &me32 ) );
CloseHandle( hModuleSnap );
return iFoundD3D9Dll;
}
//----------------------------------------------------------