quicktor.py

#!/usr/local/opt/python3/bin/python3

# Requirements: bencoder & requests
#   - can be gotten via 'pip install bencoder requests'
from bencoder import encode, decode
import hashlib
import requests
import socket
from struct import unpack

#GLOBALS:
torrent_path = 'X-Men_ Apocalypse (2016) [1080p] [YTS.AG].torrent'

# Open torrent and read data into data variable
data = None
with open(torrent_path, 'rb') as f:
    read_data = f.read()
    data = decode(read_data)

# Generate hash of info field
info_hash = hashlib.sha1(encode(data[b'info'])).digest()

# Generate static peer_id, just for PoC
peer_id = bytes(range(20))

# Calculate length of all torrent files, assume these are all multi-torrent files
length = 0
for file in data[b'info'][b'files']:
    length += file[b'length']

# Make requests to a bunch of trackers
for tracker in data[b'announce-list']:
    payload = {'info_hash': info_hash, 'peer_id': peer_id.decode("utf-8"), 'length': length,
                'port': 6881, 'uploaded':0, 'downloaded':0, 'compact':1}
    try:
        r = requests.get('http://' + tracker[0].decode("utf-8")[6:], params=payload, timeout=3)
        if(r.status_code == 200):
            print('http://' + tracker[0].decode("utf-8")[6:])
            # Grab the peers and split them into manageable chunks
            peers = decode(r.content)[b'peers']
            peers = [peers[i:i+6] for i in range(0, len(peers), 6)]
            # For each peer: print the ip and unpack the last 2 bytes as an int for the port
            for p in peers:
                print(str(socket.inet_ntoa(p[:4])) + ':' + str(unpack(">H", p[4:])[0]))
    except Exception as e:
        print(e)
        pass