一种巧妙的删除程序自己的方法2010-05-24近日看到网友询问如何实现程序运行之后把自己删除的方法,不知大家对木马甚么的兴趣实在太浓,还是想要这样的效果:用户只要一运行程序,可执行文件就没有了,可是程序还是在跑,胆小的只怕要喊"鬼呀!","老婆,快出来看上帝"甚么的。其实最典型的用法是写反安装程序. 闲来无事,Bear掰到一种还算巧妙的“删除自己”的方法。大家都知道,一般的程序运行的时候,可执行文件本身是被操作系统保护的,不能用改写的方式访问,更别提在本身还在运行的时侯删除自己了。在Lu0的主页上看到一种UNDOCUMENT的方法,通过改变系统底层的文件访问模式实现删除自己,那是实在功夫。我看了很是佩服。但是有没有一种用在MSDN上就能查到的函数实现呢?有!Jeffrey Richter给我们做了一个范例:DeleteMe.CPP Module name: DeleteMe.cpp Written by: Jeffrey Richter Description: Allows an EXEcutable file to delete itself **************************************************/ #include <Windows.h> #include <stdlib.h> #include <tchar.h> ///////////////////////////////////////////////// int WINAPI WinMain(HINSTANCE h, HINSTANCE b, LPSTR psz, int n) { // Is this the Original EXE or the clone EXE? // If the command-line 1 argument, this is the Original EXE // If the command-line >1 argument, this is the clone EXE if (__argc == 1) { // Original EXE: Spawn clone EXE to delete this EXE // Copy this EXEcutable image into the user"s temp directory TCHAR szPathOrig[_MAX_PATH], szPathClone[_MAX_PATH]; GetModuleFileName(NULL, szPathOrig, _MAX_PATH); GetTempPath(_MAX_PATH, szPathClone); GetTempFileName(szPathClone, __TEXT("Del"), 0, szPathClone); CopyFile(szPathOrig, szPathClone, FALSE); //***注意了***: // Open the clone EXE using FILE_FLAG_DELETE_ON_CLOSE HANDLE hfile = CreateFile(szPathClone, 0, FILE_SHARE_READ, NULL, OPEN_EXISTI NG, FILE_FLAG_DELETE_ON_CLOSE, NULL); // Spawn the clone EXE passing it our EXE"s process handle // and the full path name to the Original EXE file. TCHAR szCmdLine[512]; HANDLE hProcessOrig = OpenProcess(SYNCHRONIZE, TRUE, GetCurrentProcessId()); wsprintf(szCmdLine, __TEXT("%s %d "%s""), szPathClone, hProcessOrig, szPat hOrig); STARTUPINFO si; ZeroMemory(&si, sizeof(si)); si.cb = sizeof(si); PROCESS_INFORMATION pi; CreateProcess(NULL, szCmdLine, NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi); CloseHandle(hProcessOrig); CloseHandle(hfile); // This original process can now terminate. } else { // Clone EXE: When original EXE terminates, delete it HANDLE hProcessOrig = (HANDLE) _ttoi(__targv[1]); WaitForSingleObject(hProcessOrig, INFINITE); CloseHandle(hProcessOrig); DeleteFile(__targv[2]); // Insert code here to remove the subdirectory too (if desired). // The system will delete the clone EXE automatically // because it was opened with FILE_FLAG_DELETE_ON_CLOSE } return(0); }