Hello
CodeWarrior does not generate a .sym file. We generate ELF DWARF binary files.
ELF DWARF is a standard file format for binary executable files.
I do not know which is the format of the Cosmic .sym file, but you may find some converter from ELF
DWARF to .sym on Cosmic Web site.
Additionally I am not sure why you want to convert the generated .abs file to a .sym file?
CrasyCat