If my father recently passed away with no Will, does my stepmother get everything or are my brother and I entitled to anything?

You would have to look at how the assets are held, but generally, joint accounts and property in joint ownership passes to the other joint account holder/owner (unless you can show that the joint account was for convenience purposes only). Any other assets get distributed according to intestacy laws in your state. In NY, without a will, the spouse gets $50,000 and half of the remainder. The rest is split evenly amongst the children.