WingFox Downloader

A hooked version of the lib_player.js, that allows for YUV frame extraction.

Requirements

• Python 3.12
• NodeJS 14.14.0 or above
• ffmpeg

Tested Operating Systems

• Windows
• Linux (Ubuntu)

Installation

• Install the requirements.txt file

Protection Levels

Videos have to be either decrypted using AES or the built-in WASM decrypter. WASM will be used if the key is 32 bytes in length and AES when it's 16 bytes in length.
If a video protected using AES, then it's highly likely that the headers of each video fragment are also encrypted using AES. Big thanks to Novia for posting this.

There are also two different versions of lib_players. A normal one and one called 'next'. The only difference is that the 'next' version also includes the demuxer in WASM, so I had to copy over the JavaScript implementation of the demuxer for the normal version, hence the file called demuxer.js.

main.py

Based on https://github.com/gyozaaaa/the-fox-that-drank-redbull/blob/master/wingfox.py
Usage:

usage: python main.py [-h] --id ID --cookie COOKIE [--output OUTPUT] [--subtitles] [--debug]

Author: github.com/DevLARLEY Credits: github.com/gyozaaaa

options:
  -h, --help       show this help message and exit
  --id ID          WingFox Video ID Example: wingfox.com/p/<course_id>/<video_id> Shall be obtained from the 'get_video_url' request if not present in the URL
  --cookie COOKIE  WingFox yiihuu_s_c_d/PHPSESSID Cookie
  --output OUTPUT  Output file name
  --subtitles      Save subtitles
  --debug, --d     Print debug information

Combines all steps mentioned here to download a video based on a video_id.

decrypt_1.js / decrypt_2.js

These scripts hook the lib_player library which contains the WASM decrypter. They are able to decrypt a single fragment of the manifest.

Their usage:

Usage: node decrypt.js <input_fragment> <output_fragment> <key> <iv> <token> <mh/seed_const> <fragment_index>
- input_fragment: Input fragment name
- output_fragment: Output fragment name
- key: 32 byte key
- iv: 16 byte iv
- token: Video token, Example: aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee-ff
- seed_const: Video seed, Example: 130
- fragment_index: Index of fragment in manifest, starting at 0

• Key: Obtained by appending /playsafe/v12/ or /playsafe/v13/ depending on the lib_player version to the Key URI path inside the manifest
• IV: Contained in the manifest
• Token: Obtained from this endpoint: https://www.wingfox.com/polyv/polyv_get_token.php?video_id={video_id}
• Seed: Obtained from the JSON metadata endpoint at: https://player.polyv.net/secure/{vid}.json \

See main.py for more info.

N_m3u8DL-RE-WingFox

A modified version of N_m3u8DL-RE to download (and decrypt, if needed) the manifest.