实现hook OpenProcess实现
- 2020 年 1 月 9 日
- 筆記
/*********************************实现hook OpenProcess实现ring3保护进程、、C++完整代码、、************************************************/ #include <windows.h>
PIMAGE_IMPORT_BY_NAME pImportByName = NULL; PIMAGE_THUNK_DATA pOriginalThunk = NULL; PIMAGE_THUNK_DATA pFirstThunk = NULL;
//IAT HOOK的核心函数、 int IatHook(const char* DllName, const char* FunName,DWORD RealAddr);
//自己的OpenProcess函数、 HANDLE WINAPI MyOpenProcess (DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwProcessId);
DWORD MyOpenProcessAddr = (DWORD)MyOpenProcess;
//真正的 OpenProcess函数指针、、 typedef HANDLE (WINAPI * RealOpenProcess)(DWORD,BOOL,DWORD); RealOpenProcess pRealOpenProcess = (RealOpenProcess)OpenProcess;
//DLL MAIN 函数、 BOOL WINAPI DllMain(HINSTANCE hinstDLL,DWORD fdwReason,LPVOID lpvReserved) { if(fdwReason==DLL_PROCESS_ATTACH) { IatHook("Kernel32.dll","OpenProcess",MyOpenProcessAddr); } return TRUE; }
/****************************************************** MyOpenProcess 函数的实现部分****************************************************/
HANDLE WINAPI MyOpenProcess(DWORD dwDesiredAccess,BOOL bInheritHandle,DWORD dwProcessId) {
//获取 要保护进程的标题 的窗口句柄 系统API函数前使用::为了和类扩展函数区别 // 为了代码的健壮性 使用TEXT宏、 HWND 窗口句柄、 HWND HProtect = ::FindWindow(NULL,TEXT("Windows 当前所有进程")); if(!HProtect) { return ( pRealOpenProcess(dwDesiredAccess,bInheritHandle,dwProcessId) ); } //若不存在则调用返回 //获取创建此窗口的进程的ID、保存在 &ProtectId 地址中、 DWORD ProtectId; //下边找出某个窗口的创建者(线程或进程) GetWindowThreadProcessId(HProtect,&ProtectId); if(ProtectId == dwProcessId) //dwProcessId是任务管理器要结束的进程ID { return 0; //如果结束的是我们的进程则 返回错误码0、 } return ( pRealOpenProcess(dwDesiredAccess,bInheritHandle,dwProcessId) ); }
/ ****************************************************** IAT HOOK 函数的实现部分****************************************************/
int IatHook(const char* DllName, const char* FunName,DWORD RealAddr)
{ /************************** 找相同的DLL ****************************/ HANDLE pBegin = GetModuleHandle(NULL); PBYTE pBegin2 = (PBYTE)pBegin; PIMAGE_DOS_HEADER DOS = PIMAGE_DOS_HEADER(pBegin2); PIMAGE_NT_HEADERS NT = PIMAGE_NT_HEADERS(pBegin2+DOS->e_lfanew); PIMAGE_OPTIONAL_HEADER OPTION = &(NT->OptionalHeader); PIMAGE_IMPORT_DESCRIPTOR IMPORT = PIMAGE_IMPORT_DESCRIPTOR(OPTION->DataDirectory[1].VirtualAddress + pBegin2); while (IMPORT->Name) { char* OurDllName = (char*)(IMPORT->Name + pBegin2); if (0 == strcmpi(DllName , OurDllName)) { break; } IMPORT++; } /************************* 找相同的API函数 ****************************/ PIMAGE_IMPORT_BY_NAME pImportByName = NULL; PIMAGE_THUNK_DATA pOriginalThunk = NULL; PIMAGE_THUNK_DATA pFirstThunk = NULL; pOriginalThunk = (PIMAGE_THUNK_DATA)(IMPORT->OriginalFirstThunk + pBegin2); pFirstThunk = (PIMAGE_THUNK_DATA)(IMPORT->FirstThunk + pBegin2); while (pOriginalThunk->u1.Function) //记住是Function { DWORD u1 = pOriginalThunk->u1.Ordinal; //记住是Ordinal if ((u1 & IMAGE_ORDINAL_FLAG) != IMAGE_ORDINAL_FLAG) //说明MSB不是1 不是以序号导入 { pImportByName = (PIMAGE_IMPORT_BY_NAME)((DWORD)pOriginalThunk->u1.AddressOfData + pBegin2); char* OurFunName = (char*)(pImportByName->Name); //下边的计算也可以 //char* OurFunName2 = (char*)((DWORD)pOriginalThunk->u1.AddressOfData + pBegin2 + 2); if (0 == strcmpi(FunName,OurFunName)) { //获取以pFirstThunk开始的内存的信息并将其保存到MEMORY_BASIC_INFORMATION结构中 MEMORY_BASIC_INFORMATION mbi_thunk; VirtualQuery (pFirstThunk, &mbi_thunk, sizeof(MEMORY_BASIC_INFORMATION)); //VirtualProtect(mbi_thunk.BaseAddress,mbi_thunk.RegionSize, PAGE_READWRITE, &mbi_thunk.Protect); //修改以pFirstThunk开始的内存的的保护属性为PAGE_READWRITE并将原保护属性保存到&dwOLD中 DWORD dwOLD; VirtualProtect(pFirstThunk,sizeof(DWORD),PAGE_READWRITE,&dwOLD); //更改真正OpenProcess的地址为自己写的MyOpenProcess函数的地址、、 pFirstThunk->u1.Function = (PDWORD)RealAddr; //关键地方 //恢复之前更改的内存的保护属性为人家自己的、、 VirtualProtect(pFirstThunk,sizeof(DWORD),dwOLD,0); break; } } pOriginalThunk++; pFirstThunk++; } return 0; }
/***********************完***************************/
