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procedure TForm1.btn1Click(Sender: TObject);

 var
  Stream: TMemoryStream;
  Texto: String;
  Texto2: String;
  ksayisi:Integer;

begin
  Stream:= TMemoryStream.Create;
  try
    Stream.LoadFromFile('c:\1.exe');
    Texto:='blablabla'+BinToStr(Stream.Memory,Stream.Size);

    StrToStream(Texto,Stream);

    ksayisi:=Length(Texto);

    Stream.SaveToFile('c:\şifrelenmiş.exe');

  finally
      //  ShowMessage(IntToStr(ksayisi));
    Stream.Free;
  end;
end;

procedure TForm1.btn2Click(Sender: TObject);

 var
  Stream: TMemoryStream;
  dosya:TFileStream;
  Texto: String;
  Texto2: String;
  ksayisi:integer;
   ProcInfo : TProcessInformation;
   StartInfo : TStartUpInfo;

begin
  Stream:= TMemoryStream.Create;

  try
    Stream.LoadFromFile('c:\şifrelenmiş.exe');
    Texto:=BinToStr(Stream.Memory,Stream.Size);
    ksayisi:=Length(Texto);
    Texto:=copy(Texto,13,ksayisi);

    StrToStream(Texto,Stream);

// hier irgendwo, wo ich einen Code schreiben müssen sollte nicht retten arbeiten Sie direkt

//stream.SaveToFile('c:\tekçözülmüş.exe')

  finally
    Stream.Free;
  end;

  end;