Delphi_检查exe文件是否是"随机基址"

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1、代码：

procedure TForm1.btnRandomizedBaseAddressClick(Sender: TObject);
var pDosHdr :PImageDosHeader;
    pNtHdrs :PImageNtHeaders;
    pNtFileHdr :PImageFileHeader;
    ms :TMemoryStream;
    lbRelocsStripped :LongBool;// IMAGE_FILE_RELOCS_STRIPPED;
    strExe, strExe2 :string;
begin
  strExe := Trim(edtSelectFile01.Text);
  //ShowMessage(ExtractFilePath(strExe));
  //ShowMessage(ExtractFileName(strExe));
  //Exit;
  strExe2 := ExtractFilePath(strExe)+'ZZ_'+ExtractFileName(strExe);

  ms := TMemoryStream.Create;
  try
    ms.LoadFromFile(strExe);

    pDosHdr := ms.Memory;
    pNtHdrs := PImageNtHeaders(DWORD(ms.Memory) + pDosHdr._lfanew);
    if pNtHdrs.Signature <> $4550 then // PE
      ShowMessage('不是PE文件')
    else
    begin
      pNtFileHdr := @pNtHdrs.FileHeader;
      lbRelocsStripped := LongBool(pNtFileHdr.Characteristics and $01);
      if lbRelocsStripped then
        ShowMessage('固定基址')
      else
      begin
        if MessageBox(Self.Handle, '是否修改为固定基址?', '随机基址', MB_YESNO)=IDYES then
        begin
          pNtFileHdr.Characteristics := pNtFileHdr.Characteristics or $01;
          ms.SaveToFile(strExe2);
          ShowMessage('随机基址 改为 固定基址 ==> 操作完成');
        end;
      end;
    end;
  finally
    ms.Free;
  end;
end;

2、