Metasploit Revealed: Secrets of the Expert Pentester

Writing out a custom FTP scanner module

Let's try and build a simple module. We will write a simple FTP fingerprinting module and see how things work. Let's examine the code for the FTP module:

require 'msf/core' 
class Metasploit3 < Msf::Auxiliary 
  include Msf::Exploit::Remote::Ftp 
  include Msf::Auxiliary::Scanner 
  include Msf::Auxiliary::Report 
  def initialize 
    super( 
      'Name'        => 'FTP Version Scanner Customized Module', 
      'Description' => 'Detect FTP Version from the Target', 
      'Author'      => 'Nipun Jaswal', 
      'License'     =>  MSF_LICENSE 
    ) 
 
    register_options( 
      [ 
        Opt::RPORT(21), 
      ], self.class) 
  end 

We start our code by defining the required libraries. We define the statement required 'msf/core' to include the path to the core libraries at the very first step. ...