Replace Adobe Air Graphics On a Current .air using ActionScript 3 - NOT ASKING FOR GRAPHIC DESIGN

I need the visual side of an existing Adobe AIR desktop game refreshed. I no longer have the original source files—I just want to decompile and rebuild Scope of work Replacing graphics with my own on one mode of the current game What I can provide – The current .air build and asset list... (Budget: $250 - $750 USD, Jobs: ActionScript, Adobe Air, Game Design, Illustrator, User Interface / IA)