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Spotify Reverse Engineering tools and scripts

This repository contains tools and scripts used to reverse engineer the Spotify Protocol. They are used to develop librespot, an open source client implementation.

spotify-dump

The spotify-dump tool intercepts packets by the Spotify desktop client before they are encrypted or after they are decrypted. It works by patching the shn_encrypt and shn_decrypt routines of the client at run time.

This currently only works on 64 bit OS X.

To use, quit the Spotify application, and execute the dump.sh script with the path the spotify binary.

~/spotify-analyze/dump> ./dump.sh /Applications/Spotify.app/Contents/MacOS/Spotify

This will produce a dump.pcap in the current directory, which can be analyzed by the spotify-dissect tool.

spotify-dissect

The spotify-dissect tool is a set of Wireshark dissectors used to analyze packet dumps.

To use, run the dissect.sh script with the packet dump as an argument.

~/spotify-analyze/dissect> ./dissect.sh ../dump/dump.pcap

This will start wireshark with the right plugins loaded, and open the packet dump.