Did you try Dragon unPACKer? It seems to support .gob files.
Also, many of these propietary formats like .gob and .pak are really just renamed zips, maybe you should try packing them like zips and then changing the extension to gob.
Also, many of these propietary formats like .gob and .pak are really just renamed zips, maybe you should try packing them like zips and then changing the extension to gob.