Just using dotpeek tool. Flag is in the snake.My.MyApplication.cs file

```
private void MyApplication_UnhandledException(object sender, Microsoft.VisualBasic.ApplicationServices.UnhandledExceptionEventArgs e)
{
int num = (int) Interaction.MsgBox((object) "rtcp{Sn^k3s_41wAyz_g3T_F0uNd}", MsgBoxStyle.OkOnly, (object) null);
}
```