crc32checkmain.~pas

各种反分析软件的手法,包括(反Dede,反单步跟踪,反SoftICE,Ollydbg,反静态分析,以及程序自身的CRC32效验等,对于初学者有很大的帮助.

unit CRC32CheckMain;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, Base64Unit, DymCrc32, IniFiles, ComCtrls;

type
  TForm1 = class(TForm)
    StatusBar1: TStatusBar;
    procedure FormShow(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormShow(Sender: TObject);
var
  IniFileName,OldCrc,CurrentCrc:String;
  MyIniFile:TIniFile;
  CrcInt:DWORD;
begin
  try
    //Ini文件名和路径
    IniFileName:=ExtractFilePath(Application.ExeName)+'MyIni.ini';
    MyIniFile:=TIniFile.Create(IniFileName);//创建TIniFile对象
    OldCrc:=Base64Decryption(MyIniFile.ReadString('MYSET','Ver',''));
    GetCRC32File(Application.ExeName,CrcInt);
    CurrentCrc:=IntToHex(CrcInt,8);
    //如果两个校验值不同，说明已被脱壳，关闭程序
    if UpperCase(OldCrc)<>UpperCase(CurrentCrc) then
      Close;
    MyIniFile.Destroy;
  except
    MessageBox(Handle,'程序启动错误!','提示',MB_OK);
  end;
end;

end.