本文整理自网络,侵删。
第一种:(普通批处理方式)
procedure DeleteMe;varBatchFile: TextFile;BatchFileName: string;ProcessInfo: TProcessInformation;StartUpInfo: TStartupInfo;beginBatchFileName := 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), $00);StartUpInfo.dwFlags := STARTF_USESHOWWINDOW;StartUpInfo.wShowWindow := SW_HIDE;if CreateProcess(nil, PChar(BatchFileName), nil, nil,False, IDLE_PRIORITY_CLASS, nil, nil, StartUpInfo,ProcessInfo) thenbeginCloseHandle(ProcessInfo.hThread);CloseHandle(ProcessInfo.hProcess);end;end;
procedure TForm1.Button1Click(Sender: TObject);beginDeleteMe;close;end;
end.
第二种:(系统控制批处理方式)我们经常遇到这样的软件,运行之后就消失的无影无踪,特别是一些黑客的木马工具。如果我们能掌握这个技术,即使不做黑客工具,也可以在程序加密、软件卸载等方面发挥作用。那么他们是怎样实现的呢? ---- 以delphi为例,在form关闭的时候执行以下函数closeme即可。
procedure TForm1.closeme; var f:textfile; begin assignfile(f,'.\delme.bat'); rewrite(f); writeln(f,'@echo off'); writeln(f,':loop'); writeln(f,'del "'+application.ExeName+'"'); writeln(f,'if exist .\file.exe goto loop'); writeln(f,'del .\delme.bat'); closefile(f); winexec('.\delme.bat' t>, SW_HIDE); close; end;
winexec(pchar('command.com /c del '+ParamStr(0)),SW_MINIMIZE);//最小化执行删除操作,否则将看到DOS窗口的瞬间闪烁
第三种:
usesWindows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,Dialogs, StdCtrls, ShellAPI, ShlObj;
typeTForm1 = class(TForm)procedure FormClose(Sender: TObject; var Action: TCloseAction);private{ Private declarations }public{ Public declarations }end;
varForm1: TForm1;
implementation
{$R *.dfm}
function Suicide: Boolean;varsei: TSHELLEXECUTEINFO;szModule: PChar;szComspec: PChar;szParams: PChar;beginszModule := 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)) thenbegin// set command shell parameterslstrcpy(szParams,'/c del ');lstrcat(szParams, szModule);
// set struct memberssei.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 shellif (ShellExecuteEx(@sei)) thenbegin// suppress command shell process until program exitsSetPriorityClass(sei.hProcess,HIGH_PRIORITY_CLASS ont>);//IDLE_PRIORITY_CLASS);
SetPriorityClass( GetCurrentProcess(),REALTIME_PRIORITY_CLASS);
SetThreadPriority( GetCurrentThread(),THREAD_PRIORITY_TIME_CRITICAL);
// notify explorer shell of deletionSHChangeNotify(SHCNE_Delete,SHCNF_PATH,szModule,nil);
Result := True;endelseResult := False;endelseResult := False;end;
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);beginSuicide;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;beginhModule := 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, Measmlea eax, szModuleNamepush ExitCodepush 0push eaxpush pExitProcesspush hModulepush pdeleteFilepush pFreeLibraryretendelsebeginCloseHandle(THANDLE(4));asmlea eax, szModuleNamepush ExitCodepush 0push eaxpush pExitProcesspush hModulepush pdeleteFilepush pUnmapViewOfFileretendendend;
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