How to play the overpair?

[haarley]

100NL Villan has Hero covered
New to table no real reads on villian.
Folded to hero with AA in the cut off.
Hero raises to 3.00
SB folds
BB calls
Flop K24 rainbow
Hero bets the pot
Villian calls
Turn 9
Hero bets the pot
Villian goes all in
Hero...?

[PinkSteel]

Fold. You've shown nothing but strength all the way to the turn, and villain doesn't care. Your pair is no good.

Edit: Raise the flop more

This smells of a set to me. Unless you think villain is a donk and would play top pair this aggressively, dump the hand.

[4_2_it]

With no reads just flip a coin. He's either a donk who is overplaying his top pair or he has you beaten with K9 or some other two-pair garbage.

I wouldn't say calling here is a huge mistake without a read (no straight or flushes out there), just depends how much taste you have for variance.