Scoundrels

Scoundrels by Timothy Zahn
The Death Star has been destroyed, but Han Solo is still deep in debt to Jabba the Hutt. When a stranger recruits Han to carry out an ambitious heist to steal a fortune from a powerful gang boss, Han finally sees his chance to pay off the debt. But he won't be able to do it without Chewie, Lando, and a team of scoundrels!

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This is a classic era book from the Legends timeline. It will likely be contradicted by newer books (if so, just think of it as an alternate universe).