container_unpack.py

from struct import *
import os

for subdir, dirs, files in os.walk('./'):
    for file in files:
        filepath = subdir + os.sep + file

        if file == '_1.py':
            continue
            
        with open(filepath, 'rb') as f:
            chunk = f.read(2)
            #print('magic =', chunk)

            chunk = f.read(2)
            #print(unpack('>H', chunk))

            chunk = f.read(2)
            #print(unpack('>H', chunk))

            chunk = f.read(4)
            i = unpack('>I', chunk)[0]

            chunk = f.read(i)
            #print(chunk)

            chunk = f.read(4)
            i = unpack('>I', chunk)[0]
            if i >= 13783584:
                print(i, filepath)