Skeetendo

Hello everyone, I have a problem, 'cause my project is born directly on the rom and is in 2 languages, and then the disassembly cut out my previous progress and the italian language. There is a way to disassembly my existing roms? Maybe will not have the annotations and the ASM routine names, but maybe I could compare the instructions to the pret repositories and then riassembly them after the final editing. Is possible?