TODO: external-c2

[fullspectrumdev]

Once Unix domain sockets support is implemented (see: #2), we can do Fun Things such as have an "external c2" component that does, for example, DNS or ICMP tunnelling. Or whatever obnoxious network evasion trickery you can think of.

[fullspectrumdev]

This is implemented but not yet committed as it breaks some other things, and is making me reconsider parts of #2 - instead of offering the UDP/SCTP protocols inside tsh proper, having those available over the Unix socket interface.

Also depends on more work in #1 being done as the code is a fucking mess.

[fullspectrumdev]

Further to this, the actual example code for this is basically, in its simplest format, a variation on this:

https://github.com/EONRaider/blackhat-python3/blob/master/chapter02/proxy.py

Or this: socat tcp4-listen:1337 unix-connect:/tmp/SOCKYSOCKFACE

In the simplest form, we simply connect to the Unix socket, connect to (or bind to) a port somewhere, and shuffle data between them.

In a more complex form, we implement reader/writer functions (eg: read from unix socket and write over HTTP to listener, read from HTTP server and write to unix socket).

To get this feature out, which involves breaking changes overall, I need to clean up the Unix socket component and provide at least some of the following "examples":

• HTTP/S callback (client and server).
• UDP callback.
• UDP portbind.
• TLS wrapper callback.
• SCTP callback.
• SCTP portbind.
• TCP over SOCKS5 callback.

DNS and ICMP will come later.