Yes there are. Check the following websire for codes www.codejunkies.com
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happydarkside kidding sorry
misdreavus
No$Gba uses Action Replay and Code Breaker codes. With it running, go to Utility/Cheats/Add New, then look up codes for them, copy/paste, then select the appropriate option (Action Replay or Code Breaker), then select Raw. When finished, double click the code to activate it and press ok.
u can find them at this site http://www.gamefaqs.com/boards/genmessage.php?board=929993&topic=31803681&page=11
there is no specific code for infinite money for all games but check codebreaker.com that is there site