Ring3下的DLL注入(NtCreateThreadEx + LdrLoadDll方式实现，可以注入系统进程)

工具介绍及使用请移步：http://blog.****.net/sunflover454/article/details/50441014

本文首发在零日安全论坛：http://www.jmpoep.com/thread-833-1-1.html

使用NtCreateThreadEx + LdrLoadDll方式实现远程线程注入的特色在于比一般的远程线程注入稳定，可以注入系统进程，服务进程等。

核心源代码如下，完整源代码，请在文章末尾下载。

1. //OD跟踪，发现最后调用的是NtCreateThreadEx,所以这里手动调用
2. HANDLE Cx64Inject::MyCreateRemoteThread(HANDLE hProcess, LPTHREAD_START_ROUTINE pThreadProc, LPVOID pRemoteBuf)
3. {
4. HANDLE hThread = NULL;
5. FARPROC pFunc = NULL;
6. if( IsVistaOrLater())// Vista, 7, Server2008
7. {
8. pFunc = GetProcAddress(GetModuleHandleW(L"ntdll.dll"), "NtCreateThreadEx");
9. if( pFunc == NULL )
10. {
11. MyOutputDebugStringA("MyCreateRemoteThread() : GetProcAddress(\"NtCreateThreadEx\") 调用失败！错误代码: [%d]", GetLastError());
12. return NULL;
13. }
14. ((_NtCreateThreadEx64)pFunc)(&hThread,0x1FFFFF,NULL,hProcess,pThreadProc,pRemoteBuf,FALSE,NULL,NULL,NULL,NULL);
15. if( hThread == NULL )
16. {
17. MyOutputDebugStringA("MyCreateRemoteThread() : NtCreateThreadEx() 调用失败！错误代码: [%d]", GetLastError());
18. return NULL;
19. }
20. }
21. else// 2000, XP, Server2003
22. {
23. hThread = CreateRemoteThread(hProcess,NULL,0,pThreadProc,pRemoteBuf,0,NULL);
24. if( hThread == NULL )
25. {
26. MyOutputDebugStringA("MyCreateRemoteThread() : CreateRemoteThread() 调用失败！错误代码: [%d]", GetLastError());
27. return NULL;
28. }
29. }
30. if( WAIT_FAILED == WaitForSingleObject(hThread, INFINITE) )
31. {
32. MyOutputDebugStringA("MyCreateRemoteThread() : WaitForSingleObject() 调用失败！错误代码: [%d]", GetLastError());
33. return NULL;
34. }
35. return hThread;
36. }

//OD跟踪，发现最后调用的是NtCreateThreadEx,所以这里手动调用
HANDLE Cx64Inject::MyCreateRemoteThread(HANDLE hProcess, LPTHREAD_START_ROUTINE pThreadProc, LPVOID pRemoteBuf)
{
        HANDLE hThread = NULL;
        FARPROC pFunc = NULL;
        if( IsVistaOrLater())// Vista, 7, Server2008
        {
                pFunc = GetProcAddress(GetModuleHandleW(L"ntdll.dll"), "NtCreateThreadEx");
                if( pFunc == NULL )
                {
                        MyOutputDebugStringA("MyCreateRemoteThread() : GetProcAddress(\"NtCreateThreadEx\") 调用失败！错误代码: [%d]", GetLastError());
                        return NULL;
                }
                ((_NtCreateThreadEx64)pFunc)(&hThread,0x1FFFFF,NULL,hProcess,pThreadProc,pRemoteBuf,FALSE,NULL,NULL,NULL,NULL);
                if( hThread == NULL )
                {
                        MyOutputDebugStringA("MyCreateRemoteThread() : NtCreateThreadEx() 调用失败！错误代码: [%d]", GetLastError());
                        return NULL;
                }
        }
        else// 2000, XP, Server2003
        {
                hThread = CreateRemoteThread(hProcess,NULL,0,pThreadProc,pRemoteBuf,0,NULL);
                if( hThread == NULL )
                {
                        MyOutputDebugStringA("MyCreateRemoteThread() : CreateRemoteThread() 调用失败！错误代码: [%d]", GetLastError());
                        return NULL;
                }
        }
        if( WAIT_FAILED == WaitForSingleObject(hThread, INFINITE) )
        {
                MyOutputDebugStringA("MyCreateRemoteThread() : WaitForSingleObject() 调用失败！错误代码: [%d]", GetLastError());
                return NULL;
        }
        return hThread;
}

1. //在目标进程中创建线程并注入dll
2. BOOL Cx64Inject::InjectDll(DWORD dwProcessId,LPCWSTR lpcwDllPath)
3. {
4. BOOL bRet = FALSE;
5. HANDLE hProcess = NULL, hThread = NULL;
6. LPVOID pCode = NULL;
7. LPVOID pThreadData = NULL;
8. __try
9. {
10. if(!EnableDebugPrivilege())
11. {
12. MyOutputDebugStringA("InjectDll() : EnableDebugPrivilege() 调用失败！错误代码: [%d]", GetLastError());
13. return -1;
14. }
15. //打开目标进程;
16. hProcess = OpenProcess(PROCESS_ALL_ACCESS, TRUE, dwProcessId);
17. DWORD dwError = GetLastError();
18. if (hProcess == NULL)
19. __leave;
20. //申请空间，把我们的代码和数据写入目标进程空间里;
21. //写入数据;
22. THREAD_DATA data;
23. HMODULE hNtdll = GetModuleHandleW(L"ntdll.dll");
24. data.fnRtlInitUnicodeString = (pRtlInitUnicodeString)GetProcAddress(hNtdll,"RtlInitUnicodeString");
25. data.fnLdrLoadDll = (pLdrLoadDll)GetProcAddress(hNtdll,"LdrLoadDll");
26. memcpy(data.DllName, lpcwDllPath, (wcslen(lpcwDllPath) + 1)*sizeof(WCHAR));
27. data.DllPath = NULL;
28. data.Flags = 0;
29. data.ModuleHandle = INVALID_HANDLE_VALUE;
30. pThreadData = VirtualAllocEx(hProcess, NULL, 4096, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
31. if (pThreadData == NULL)
32. __leave;
33. BOOL bWriteOK = WriteProcessMemory(hProcess, pThreadData,&data,sizeof(data), NULL);
34. if (!bWriteOK)
35. __leave;
36. MyOutputDebugStringA("pThreadData = 0x%p", pThreadData);
37. //写入代码;
38. DWORD SizeOfCode = (DWORD)ThreadProcEnd - (DWORD)ThreadProc;
39. pCode = VirtualAllocEx(hProcess, NULL, SizeOfCode, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
40. if (pCode == NULL)
41. {
42. MyOutputDebugStringA("InjectDll() : pCode = VirtualAllocEx() 调用失败！错误代码: [%d]", GetLastError());
43. __leave;
44. }
45. bWriteOK = WriteProcessMemory(hProcess, pCode, (PVOID)ThreadProc, SizeOfCode, NULL);
46. if (!bWriteOK)
47. __leave;
48. MyOutputDebugStringA("pCode = 0x%p", pCode);
49. //创建远程线程，把ThreadProc作为线程起始函数，pThreadData作为参数;
50. hThread = MyCreateRemoteThread(hProcess, (LPTHREAD_START_ROUTINE)pCode, pThreadData);
51. if (hThread == NULL)
52. __leave;
53. //等待完成;
54. WaitForSingleObject(hThread, INFINITE);
55. bRet = TRUE;
56. }
57. __finally
58. {
59. if (pThreadData != NULL)
60. VirtualFreeEx(hProcess, pThreadData, 0, MEM_RELEASE);
61. if (pCode != NULL)
62. VirtualFreeEx(hProcess, pCode, 0, MEM_RELEASE);
63. if (hThread != NULL)
64. CloseHandle(hThread);
65. if (hProcess != NULL)
66. CloseHandle(hProcess);
67. }
68. return bRet;
69. }

//在目标进程中创建线程并注入dll
BOOL Cx64Inject::InjectDll(DWORD dwProcessId,LPCWSTR lpcwDllPath)
{
        BOOL bRet = FALSE;
        HANDLE hProcess = NULL, hThread = NULL;
        LPVOID pCode = NULL;
        LPVOID pThreadData = NULL;
        __try
        {
                if(!EnableDebugPrivilege())
                {
                        MyOutputDebugStringA("InjectDll() : EnableDebugPrivilege() 调用失败！错误代码: [%d]", GetLastError());
                        return -1;
                }
                //打开目标进程;
                hProcess = OpenProcess(PROCESS_ALL_ACCESS, TRUE, dwProcessId);
                DWORD dwError = GetLastError();
                if (hProcess == NULL)
                        __leave;
                //申请空间，把我们的代码和数据写入目标进程空间里;
                //写入数据;
                THREAD_DATA data;
                HMODULE hNtdll = GetModuleHandleW(L"ntdll.dll");
                data.fnRtlInitUnicodeString = (pRtlInitUnicodeString)GetProcAddress(hNtdll,"RtlInitUnicodeString");
                data.fnLdrLoadDll = (pLdrLoadDll)GetProcAddress(hNtdll,"LdrLoadDll");
                memcpy(data.DllName, lpcwDllPath, (wcslen(lpcwDllPath) + 1)*sizeof(WCHAR));
                data.DllPath = NULL;
                data.Flags = 0;
                data.ModuleHandle = INVALID_HANDLE_VALUE;
                pThreadData = VirtualAllocEx(hProcess, NULL, 4096, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
                if (pThreadData == NULL)
                        __leave;
                BOOL bWriteOK = WriteProcessMemory(hProcess, pThreadData,&data,sizeof(data), NULL);
                if (!bWriteOK)
                        __leave;
                MyOutputDebugStringA("pThreadData = 0x%p", pThreadData);
                //写入代码;
                DWORD SizeOfCode = (DWORD)ThreadProcEnd - (DWORD)ThreadProc;
                pCode = VirtualAllocEx(hProcess, NULL, SizeOfCode, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
                if (pCode == NULL)
                {
                        MyOutputDebugStringA("InjectDll() : pCode = VirtualAllocEx() 调用失败！错误代码: [%d]", GetLastError());
                        __leave;
                }
                bWriteOK = WriteProcessMemory(hProcess, pCode, (PVOID)ThreadProc, SizeOfCode, NULL);
                if (!bWriteOK)
                        __leave;
                MyOutputDebugStringA("pCode = 0x%p", pCode);
                //创建远程线程，把ThreadProc作为线程起始函数，pThreadData作为参数;
                hThread = MyCreateRemoteThread(hProcess, (LPTHREAD_START_ROUTINE)pCode, pThreadData);
                if (hThread == NULL)
                        __leave;
                //等待完成;
                WaitForSingleObject(hThread, INFINITE);
                bRet = TRUE;
        }
        __finally
        {
                if (pThreadData != NULL)
                        VirtualFreeEx(hProcess, pThreadData, 0, MEM_RELEASE);
                if (pCode != NULL)
                        VirtualFreeEx(hProcess, pCode, 0, MEM_RELEASE);
                if (hThread != NULL)
                        CloseHandle(hThread);
                if (hProcess != NULL)
                        CloseHandle(hProcess);
        }

        return bRet;
}

以上是远程线程注入类的两个核心函数，下面是调用实例：

1. Cx64Inject inject;
2. if (inject.InjectDll(g_dwPID,g_szDllPath))
3. {
4. ::MessageBox(NULL,L"注入成功",L":)",MB_ICONINFORMATION);
5. }
6. else
7. {
8. ::MessageBox(NULL,L"注入失败！",L"失败",MB_ICONERROR);
9. }

Cx64Inject inject;
if (inject.InjectDll(g_dwPID,g_szDllPath))
{
        ::MessageBox(NULL,L"注入成功",L":)",MB_ICONINFORMATION);
}
else
{
        ::MessageBox(NULL,L"注入失败！",L"失败",MB_ICONERROR);
}

封装成类了，使用起来很简单的。
有一点需要注意的是x64注入的意思是只能将64位dll注入64位进程。
x86注入的意思是32位dll注入32位进程。

源代码下载：

DLL注入工具x86Inject_v1.2完整源代码（VS2010）下载地址：http://download.****.net/detail/sunflover454/9385421

DLL注入工具x64Inject_v1.1完整源代码（VS2010）下载地址：http://download.****.net/detail/sunflover454/9385408

相关下载：

DLL注入工具成品（x86）下载地址：http://download.****.net/detail/sunflover454/9385346

DLL注入工具成品（x64）下载地址：http://download.****.net/detail/sunflover454/9385355

转载请注明出处，谢谢！
原帖地址：http://blog.****.net/sunflover454/article/details/50441146

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