Multiple codes on car?

From the description I would say you have a couple issues. The engine misfire is likely dumping extra fuel into the exhaust and that is causing the converter code as well. It needs to be repaired before you can test if the converter is actually done or can possibly be saved. The ABS light and others are all related. Very likely either a bad speed wheel speed sensor or bad magnetic ring in the hub. Does your scan tool read live data? If so, use it to determine if the misfire is a single cylinder or a multi-cylinder (P0300) miss. The ABS should also show a code related to a wheel cylinder or ABS module failure. The modules are a known failure item. Run a few scans and see what you find. Then split the two items so you have two questions. This way if others search for the problems, they only get one issue instead of two.