What provisions did the boys have to start their life of piracy?

The boys stole their provisions.

About midnight Tom arrived with a boiled ham and a few trifles, and stopped in a dense undergrowth on a smallbluff overlooking the meeting-place. It was starlight, and very still.

Finn the Red-Handed had stolen a skillet and a quan- tity of half-cured leaf tobacco, and had also brought a few corncobs to make pipes with.