Accidentally turned off engine while in drive then turned it back on and rogue kept rolling back

What is your question?

I was on my driveway and turned off the engine to then realize that I forgot to put it in park. I was still in drive so I turned on the rogue immediately and changed the gear back to park. I then wanted to see if everything was ok so I put it to reverse and backed out the driveway. Problem is that when I applied the brakes the rogue would NOT stop! It kept rolling back so I quickly pushed on the emergency brake and it finally came to a halt. I noticed that when I was trying to press on the brakes originally, they were really hard. Is my rogue OK? What happened?