VC++远程线程注入类x86 + x64 （NtCreateThreadEx + LdrLoadDll）
Ring3下的DLL注入工具 x86 x64(NtCreateThreadEx + LdrLoadDll方式实现，可以注入系统进程)
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。
//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;
}
//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：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。
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