leptos-null

//
//  LMApiaryDeviceCrypto.h
//
//  Created by Leptos on 11/18/18.
//  Copyright © 2018 Leptos. All rights reserved.
//

#import <Foundation/Foundation.h>

#define kYouTubeBase64EncodedProjectKey @"vOU14u6GkupSL2pLKI/B7L3pBZJpI8W92RoKHJOu3PY="

leptos-null

Writing an iOS YouTube Music client

I’ve been using YouTube Music as my main music streaming service for almost a year and a half. The iOS client is great- I’ve never had a single complaint. It’s potentially one of the most bug free apps I’ve ever used, it has an extremely friendly, and simple, graphical interface, and the service itself is great.

I was curious how the client worked in terms of networking, and while curiosity may treat cats poorly, it lands researchers in black sites can provide a lot of insight.

Step 0

The first thing I do when reverse engineering a client is monitor HTTP requests while the application starts up, and when doing the tasks interested in. On a jailbroken iOS device, I use FLEX by FlipBoard.

tombulled

# Go here for the working version: https://gist.github.com/tombulled/d313c54a0681fcf0ba6d8092f11411e6#gistcomment-3069388

import hashlib
from pprint import pprint
import base64
import bytebuffer # https://github.com/alon-sage/python-bytebuffer, pip install bytebuffer
# Other ByteBuffer classes I've found: https://github.com/iGio90/PyByteBuffer, https://github.com/aglyzov/bytebuffer
import secrets
import pyaes # https://github.com/ricmoo/pyaes, pip install pyaes