The most general way to get Pronto Hex for those Sony signals is with the MakeHex program using the sony12.irp file. You can select any device number (0 to 31) and generate Pronto Hex for all possible function numbers (0 to 127).

There are lots of other ways to get common Sony codes, including learning from a Sony remote. But if you have a Sony remote, that suggests you have the corresponding Sony device and might be better off not selecting that same device number for use with the IR232 (so the two don't interfere).