多种方法,请自已测试吧
procedure DeleteMe; var BatchFile: TextFile; BatchFileName: string; ProcessInfo: TProcessInformation; StartUpInfo: TStartupInfo; begin BatchFileName := ExtractFilePath(ParamStr(0)) + '_deleteme.bat'; AssignFile(BatchFile, BatchFileName); Rewrite(BatchFile); Writeln(BatchFile, ':try'); Writeln(BatchFile, ' del "' + ParamStr(0) + '"'); Writeln(BatchFile, 'if exist "' + ParamStr(0) + '" ' + ' goto try'); Writeln(BatchFile, 'del %0'); CloseFile(BatchFile); FillChar(StartUpInfo, SizeOf(StartUpInfo), $00); StartUpInfo.dwFlags := STARTF_USESHOWWINDOW; StartUpInfo.wShowWindow := SW_HIDE; if CreateProcess(nil, PChar(BatchFileName), nil, nil, False, IDLE_PRIORITY_CLASS, nil, nil, StartUpInfo, ProcessInfo) then begin CloseHandle(ProcessInfo.hThread); CloseHandle(ProcessInfo.hProcess); end; end; procedure TForm1.Button1Click(Sender: TObject); begin DeleteMe; close; end;
第二种:(系统控制批处理方式)
我们经常遇到这样的软件,运行之后就消失的无影无踪,特别是一些黑客的木马工具。
如果我们能掌握这个技术,即使不做黑客工具,也可以在程序加密、软件卸载等方面发挥作用。
那么他们是怎样实现的呢? ---- 以delphi为例,在form关闭的时候执行以下函数closeme即可。
procedure TForm1.closeme; var f: textfile; begin assignfile(f, '.\delme.bat'); rewrite(f); writeln(f, '@echo off'); writeln(f, ':loop'); writeln(f, 'del "' + application.ExeName + '"'); writeln(f, 'if exist "' + application.ExeName + '" goto loop'); //exist 是判断文件是否存在,.表示本目录,\号,就是本目录 writeln(f, 'del .\delme.bat'); closefile(f); winexec('.\delme.bat', SW_HIDE); close; end; procedure TForm1._deleteme; var f: textfile; begin winexec(pchar('cmd /c ping 127.0.0.1 -n 3&del /q "' + ParamStr(0) + '"'), SW_HIDE); close(); end; procedure TForm1.btn1Click(Sender: TObject); begin _deleteme; //方式一 closeme; //方式二 end;
第三种:
uses ShlObj, ShellAPI; {$R *.dfm} function Suicide: Boolean; var sei: TSHELLEXECUTEINFO; szModule: PChar; szComspec: PChar; szParams: PChar; begin szModule := AllocMem(MAX_PATH); szComspec := AllocMem(MAX_PATH); szParams := AllocMem(MAX_PATH); // get file path names: if ((GetModuleFileName(0, szModule, MAX_PATH) <> 0) and // (GetShortPathName(szModule, szModule, MAX_PATH) <> 0) and // (GetEnvironmentVariable('COMSPEC', szComspec, MAX_PATH) <> 0)) then begin // set command shell parameters lstrcpy(szParams, ' /c del '); lstrcat(szParams, szModule); // set struct members sei.cbSize := sizeof(sei); sei.Wnd := 0; sei.lpVerb := 'Open'; sei.lpFile := szComspec; sei.lpParameters := szParams; sei.lpDirectory := 0; sei.nShow := SW_HIDE; sei.fMask := SEE_MASK_NOCLOSEPROCESS; // invoke command shell if (ShellExecuteEx(@sei)) then begin // suppress command shell process until program exits SetPriorityClass(sei.hProcess, HIGH_PRIORITY_CLASS); //IDLE_PRIORITY_CLASS); SetPriorityClass(GetCurrentProcess(), REALTIME_PRIORITY_CLASS); SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_TIME_CRITICAL); // notify explorer shell of deletion SHChangeNotify(SHCNE_Delete, SHCNF_PATH, szModule, nil); Result := True; end else Result := False; end else Result := False; end; procedure TForm1.btn1Click(Sender: TObject); begin Suicide; close; end;
第四种:
procedure deleteSelf; var hModule: THandle; szModuleName: array[0..MAX_PATH] of char; hKrnl32: THandle; pExitProcess, pdeleteFile, pFreeLibrary, pUnmapViewOfFile: pointer; ExitCode: UINT; begin hModule := GetModuleHandle(nil); GetModuleFileName(hModule, szModuleName, sizeof(szModuleName)); hKrnl32 := GetModuleHandle('kernel32'); pExitProcess := GetProcAddress(hKrnl32, 'ExitProcess'); pdeleteFile := GetProcAddress(hKrnl32, 'deleteFileA'); pFreeLibrary := GetProcAddress(hKrnl32, 'FreeLibrary'); pUnmapViewOfFile := GetProcAddress(hKrnl32, 'UnmapViewOfFile'); ExitCode := system.ExitCode; if ($80000000 and GetVersion()) <> 0 then // Win95, 98, Me asm lea eax, szModuleName push ExitCode push 0 push eax push pExitProcess push hModule push pdeleteFile push pFreeLibrary ret end else begin CloseHandle(THANDLE(4)); asm lea eax, szModuleName push ExitCode push 0 push eax push pExitProcess push hModule push pdeleteFile push pUnmapViewOfFile ret end end end; procedure TForm1.btn1Click(Sender: TObject); begin deleteSelf; close; end;
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