The gobext tool extracts game resource files from a *.gob file (e.g.: models, scripts, level files, etc...).
Note: For the extracted files to be used in the game they must be put in the Resource folder located in the root folder where the game is installed.
Using gobext:
gobext <path_to_gob_file>
To extract files to a specific folder use -o flag:
gobext <path_to_gob_file> -o=<path_to_output_folder>