There are 3 repositories under mast1c0re topic.
Develop payloads that can be executed on the PlayStation 4 or PlayStation 5 through a game save file.
Okage: Shadow King game save which loads PS2 ELF files over the network that were built with mast1c0re.
Library for analyzing and creating PS2 PSU game save files
The "okrager" console application allows you to generate an exploitable Okage: Shadow King game save.