C語言程序自刪除

程序自刪除的方式有很多，不過最終的思想不過是關閉本身進程，開啟新進程用於刪除自身。下面這個方法是用windows自帶命令行程序實現刪除。

命令行為 cmd.exe /c del filename

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代碼示例：C語言形式

#include <windows.h>
#include <shellapi.h>
#include <shlobj.h>

BOOL SelfDel()
{
    SHELLEXECUTEINFO sei;
    TCHAR szModule [MAX_PATH],szComspec[MAX_PATH],szParams [MAX_PATH];
   
    // 獲得自身文件名. 獲取cmd的全路徑文件名
    if((GetModuleFileName(0,szModule,MAX_PATH)!=0) &&
        (GetShortPathName(szModule,szModule,MAX_PATH)!=0) &&
        (GetEnvironmentVariable("COMSPEC",szComspec,MAX_PATH)!=0))
    {
        // 設置命令參數.
        lstrcpy(szParams,"/c del ");
        lstrcat(szParams, szModule);
        lstrcat(szParams, " > nul");
       
        // 設置結構成員.
        sei.cbSize = sizeof(sei);
        sei.hwnd = 0;
        sei.lpVerb = "Open";
        sei.lpFile = szComspec;
        sei.lpParameters = szParams;
        sei.lpDirectory = 0;        sei.nShow = SW_HIDE;
        sei.fMask = SEE_MASK_NOCLOSEPROCESS;
       
        // 創建cmd進程.
        if(ShellExecuteEx(&sei))
        {
            // 設置cmd進程的執行級別為空閒執行,使本程序有足夠的時間從內存中退出.
            SetPriorityClass(sei.hProcess,IDLE_PRIORITY_CLASS);

            // 將自身進程的優先級置高
            SetPriorityClass(GetCurrentProcess(),REALTIME_PRIORITY_CLASS);
            SetThreadPriority(GetCurrentThread(),THREAD_PRIORITY_TIME_CRITICAL);
           
           // 通知Windows資源浏覽器,本程序文件已經被刪除.
            SHChangeNotify(SHCNE_DELETE,SHCNF_PATH,szModule,0);
            return TRUE;
        }
    }
    return FALSE;
}

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    代碼示例：匯編形式

        .386
        .model flat,stdcall
        option casemap:none
       
include windows.inc

include kernel32.inc
includelib kernel32.lib
include urlmon.inc
includelib urlmon.lib
include shell32.inc
includelib shell32.lib   

    .data?
   
    szModule db MAX_PATH dup (?)
    sComspec db MAX_PATH dup (?); 自刪除
    szParams db MAX_PATH dup (?)
    hCurProcess    dd    ?
    hCurThread    dd    ?
    .data           
    sei   SHELLEXECUTEINFO   <0>       
    .const
    szComspec    db    COMSPEC,0   
    Verb1        db    open,0   
    szCom1        db    /c del ,0  
    szCom2      db > nul,0   
   
   
      
  
     .code
start:
        invoke GetModuleFileName,0,addr szModule,MAX_PATH
  
        invoke GetEnvironmentVariable,addr szComspec,addr sComspec,MAX_PATH
  
          
  
        invoke lstrcpy,addr szParams,addr szCom1
        invoke lstrcat,addr szParams,addr szModule
        invoke lstrcat,addr szParams,addr szCom2
      
        mov sei.cbSize,sizeof sei         ;1
        mov sei.hwnd,0                    ;2
        mov sei.lpVerb,offset Verb1       ;3    
        lea eax,szParams
        mov sei.lpParameters,eax          ;4
        lea eax,sComspec
        mov sei.lpFile,eax                ;5
        mov sei.lpDirectory,0
        mov sei.nShow,SW_HIDE
        mov sei.fMask,SEE_MASK_NOCLOSEPROCESS
        invoke ShellExecuteEx, addr sei
        .if eax
            invoke SetPriorityClass,sei.hProcess,IDLE_PRIORITY_CLASS
            invoke GetCurrentProcess
            mov hCurProcess,eax
          
            invoke SetPriorityClass,hCurProcess,REALTIME_PRIORITY_CLASS
  
            invoke GetCurrentThread
            mov hCurThread,eax
          
            invoke SetThreadPriority,hCurThread,THREAD_PRIORITY_TIME_CRITICAL
            invoke SHChangeNotify,SHCNE_DELETE,SHCNF_PATH,addr szModule,0
          
  &n