For precaution : always check the dashboard lights after ignition! If the ' ! ' light is on , it means the handbrake is also on too. After releasing the handbrake the light switches off .If you see the light on when the handbrake is released , then it means you have worned out your brakes .
Hand brake lever usually activates the rear brakes . Probable source of damage is at the rear .The brake shoes may have knocked off from their position and causing the noise .
Park your car at a incline and turn on only the handbrake (no gear or foot brake) keep the ignition on . If the car slips then definitely your rear brake shoes/ disk /drum / hub has been heavily damaged. Also if your car is a rear wheel drive, have the rear differential and prop shaft checked .
You are better off to a dealer as there is a chance you can slip some of the damages under warranty .