Worn brake pads cant cause a "brake" light.
Low fluid in the master cylinder, e - brake set, or one of your brake lines snapped grounding the thing on the master cylinder and making the cirucit complete so your brake light comes on.
I would first check to see if your e-brake is on, then add fluid to the master cylinder.
Cant help with ABS as I dont have it, I do know there is a code for the ABS light just like check engine lights.
