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int LoadLib(DWORD dwProcessId, LPWSTR lpszLibName)
{
HANDLE hProcess = NULL;
HANDLE hThread = NULL;
LPWSTR lpszRemoteFile = NULL;
// 打开远程进程
hProcess = OpenProcess(PROCESS_CREATE_THREAD
| PROCESS_VM_OPERATION
| PROCESS_VM_WRITE,
FALSE,
dwProcessId);
if (hProcess == NULL)
{
return FALSE;
}
// 在远程进程中分配存贮DLL文件名的空间
lpszRemoteFile = (LPWSTR)VirtualAllocEx(hProcess, NULL,
sizeof(WCHAR) * lstrlenW(lpszLibName) + 1,
MEM_COMMIT, PAGE_READWRITE);
if (lpszRemoteFile == NULL)
{
return FALSE;
}
// 复制DLL文件名到远程刚分配的进程空间
if (!WriteProcessMemory(hProcess, lpszRemoteFile,
(PVOID)lpszLibName, sizeof(WCHAR) * lstrlenW(lpszLibName) + 1,
NULL))
{
return FALSE;
}
// 取得LoadLibrary函数在Kennel32.dll中的地址
PTHREAD_START_ROUTINE pfnThreadRtn =
(PTHREAD_START_ROUTINE)GetProcAddress(
GetModuleHandle("Kernel32.dll"),"LoadLibraryW");
if (pfnThreadRtn == NULL)
{
return FALSE;
}
// 创建远程线程
hThread = CreateRemoteThread(hProcess,
NULL,
0,
pfnThreadRtn, // LoadLibrary地址
lpszRemoteFile, // 要加载的DLL名
0,
NULL);
DWORD errorCode=GetLastError();//获取错误编码号为:5
if (hThread == NULL) //失败在此就直接返回了
{
return FALSE;
}
// 等待线程返回
return TRUE;
}