At early level yes, but if you wait too long it will be tricky situation as they will not hire you into senior position, but you will be dumb to accept entry position in your 30s or so too.

The latest you can try to join is as MBA Associate, have 3 years or so of professional experience under your belt, do an MBA and land an MBA Assoc position in IB.

IB in itself doesn't require much specialized knowledge (just general intelligence) and legal skills are welcomed.