PS4 CFW and Hacks

# This script is intended to unpack "pkg" file from Trails of Cold Steel III/IV/Hajimari PC/Switch, but it also works on Trails of Cold Steel I/II/III/IV Vita/PS3/PS4, Hajimari no Kiseki, and Tokyo Xanadu.
# 1st argument is .pkg path, 2nd argument is output directory

# For Hajimari PC support, it requires the "zstandard" module to be installed.
# This can be installed by:
# /path/to/python3 -m pip install zstandard

import io
import sys
import struct
import os

try:
    import zstandard
except:
    pass

def uncompress_nislzss(src, decompressed_size, compressed_size):
    des = int.from_bytes(src.read(4), byteorder="little")
    if des != decompressed_size:
        des = des if (des >...