I hate my step brother? What should I do about it?
That's not uncommon. Did he do something?
Yes, he always tries to get attention by saying bad things about me
Have you tried talking to your brother and telling him you don't like it. You should try to avoid hating your family.
No I hate him! I don't like him!
You shouldn't hate your family members without trying to talk to them first. It sounds like you don't want to put any effort in repairing the relationship which you might regret later.