how to make payload rootkit/backdoor

step1: 
root@kali:~#setoolkit

Step2:
press 1 - enter

Step3:
press 4 - enter

Step4:
Press 2 - enter
set parameter as LHOST/ Port listener

Return back to: root@kali:~#

And this is payload was created

and copy it to desktop of kali

Next step: We use msfvenom to create meterpreter payload

Now we broadcast backdoor to victim.

Attack victim now

#msfconsole

Waiting victim run backdoor.exe

We attack success: