System Hacking

Metasploit

Using msfconsole

Msfconsole Commands - Metasploit UnleashedOffSec

Metasploit Unleashed - Free Online Ethical Hacking Course | OffSecOffSec

Using Meterpreter

Metasploit Unleashed - Free Online Ethical Hacking Course | OffSecOffSec

Meterpreter Basics - Metasploit UnleashedOffSec

Manage Meterpreter and Shell Sessions | Metasploit Documentation

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Vulnerability Assessment

Using Searchsploit

Simple command line utility to search the ExploitDB.

searchsploit vsftpd 2.3.4

Using Nessus

Basic Network Scan > Target Details > Scan