ACBJsonParser.py

import sys
import zlib
import json

from Crypto.Cipher import AES
from Crypto.Util.Padding import pad, unpad

magic_number = b"ACBJA\x01\x00"

def uncipherAES(data : bytes):
    key = b""
    key += b"Iu[Ki}96TZp]pri/"[4:8]
    key += b"Iu[Ki}96TZp]pri/"[0:4]
    key += b"Iu[Ki}96TZp]pri/"[12:16]
    key += b"Iu[Ki}96TZp]pri/"[8:12]

    aes = AES.new(key, AES.MODE_ECB)
    padded_output = aes.decrypt(data)
    return unpad(padded_output,16)

def main(filename):
    with open(filename,'rb') as file:
        have_magic = file.read(7) == magic_number
        file_data = b""
        if(have_magic):
            file_data = uncipherAES(file.read())
            file_data = zlib.decompress(file_data)
        else:
            file_data = file.read()
        
        json_object = json.loads(file_data)
        json_formatted_str = json.dumps(json_object, indent=2)
        print(json_formatted_str)



if __name__ == '__main__':
    if(len(sys.argv) != 2):
        print(f"[-] Usage : {sys.argv[0]} <file>")
        sys.exit(-1)
    
    main(sys.argv[1])