Roblox Cache Buster: Simple script to convert Roblox cache files on `%temp%/Roblox/http` folder to normal, openable files (if valid). Run the script inside `%temp%/Roblox/http`.

rb-cachebuster.py

from genericpath import isfile
import puremagic, io, os

os.makedirs('cachebuster', exist_ok=True)

for file_name in os.listdir('.'):
    if not os.path.isfile(file_name):
        continue

    # print(file_name)

    new_file_headers = b""
    new_file_content = None

    with open(file_name, mode='rb') as file:
        if file.read(4) != b"RBXH":
            continue

        # Seeking to HTTP request
        start = b""
        while start != b"\x03\x00\x00\x00":
            start = start[-3:] + file.read(1)
        
        # print("READ HEADER")
        last_tell = 0
        header = b""
        separator_exists = False
        while (len(header) < 64 or separator_exists) and file.peek(1):
            header += file.read(1)
            if header[-2:] == b": ":
                separator_exists = True
            if header[-2:] == b"\r\n" and separator_exists:
                last_tell = file.tell()
                new_file_headers += header
                # print(header)
                header = b""
                separator_exists = False

        if new_file_headers == b"":
            # print("NO HEADER")
            print(file_name + ": No header")
            continue

        # print("READ CONTENT")
        file.seek(last_tell)
        new_file_content = io.BytesIO(file.read())
        
        # print(puremagic.magic_stream(file))

    # print(new_file.read(16))
    new_file_name = None
    puremagic_result = None
    try:
        puremagic_result = puremagic.magic_stream(new_file_content)
        # print(puremagic_result[0].extension)
        new_file_name = "cachebuster/" + file_name + puremagic_result[0].extension
    except:
        new_file_name = "cachebuster/" + file_name

    new_file_content.seek(0)
    # if len(new_file_content) == 0:
    #     continue

    if not new_file_content.read(1):
        print(file_name + ": No content")
        continue
    if not puremagic_result:
        print(file_name + ": OK, unknown")
        continue
        
    new_file_content.seek(0)

    with open(new_file_name, 'wb') as new_file:
        new_file.write(new_file_content.read())

    print(file_name + ": OK, " + puremagic_result[0].name)

requirements.txt

puremagic==1.14

it seems like roblox changed how files are sent to the client as they are now immediately removed from the temp file and placed into the actual rbx-storage folder (under local) with the headers stripped

best to run while roblox is open, they silently clear the temp folders when it is closed