socket_io_client

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A simple malicious Socket.IO client as a Python script.

http://blog.kotowicz.net/2011/03/html5-websockets-security-new-tool-for.html

It can:

• Handshake with a Socket.io server
• Ignore all Origin restrictions
• Transparently handle all socket.io heartbeats
• Send arbitrary messages - from a prompt or an input file. Messages could be raw or properly formatted according to socket.io protocol
• Receive/log all server messages

I also included a few exemplary payloads which can crash servers I encountered. You can test the client against my vulnerable chat application (try XSS).

1. Connect (with Chrome or other browser supporting websockets) to http://vuln.nodester.com/chat.html
2. Run the command line client ./socket_io_client.py vuln.nodester.com 80
3. Start conversation
4. Try to inject XSS from the command line client

You could also use my prepared payloads like so:

./socket_io_client.py vuln.nodester.com 80 < payloads.txt

Or save all server reponses like so: ./socket_io_client.py vuln.nodester.com 80 > output.txt