Refinishing brass hardware

I have a what I call a campaign chest with brass handles and brass "Ls" at the corners and "crosses" on the wood between the three sets of two drawers each.

Question: I can remove the handles because they are screwed in and have them replated or whatever. How can I refinish the other brass hardware which cannot be removed? It is discolored, may not be solid, etc. as a last resort can I paint it with a very small brush and if so with what type of paint, suggestions would greatly be appreciated. Thanks. Pat