Class: Rex::Post::HWBridge::Ui::Console::CommandDispatcher::Automotive

Inherits:
Object
  • Object
show all
Includes:
Msf::Auxiliary::Report, Rex::Post::HWBridge::Ui::Console::CommandDispatcher
Defined in:
lib/rex/post/hwbridge/ui/console/command_dispatcher/automotive.rb

Overview

Automotive extension - set of commands to be executed on CAN bus

Instance Attribute Summary collapse

Attributes included from Ui::Text::DispatcherShell::CommandDispatcher

#shell, #tab_complete_items

Instance Method Summary collapse

Methods included from Msf::Auxiliary::Report

#active_db?, #create_cracked_credential, #create_credential, #create_credential_and_login, #create_credential_login, #db, #db_warning_given?, #get_client, #get_host, #inside_workspace_boundary?, #invalidate_login, #mytask, #myworkspace, #myworkspace_id, #report_auth_info, #report_client, #report_exploit, #report_host, #report_loot, #report_note, #report_service, #report_vuln, #report_web_form, #report_web_page, #report_web_site, #report_web_vuln, #store_cred, #store_local, #store_loot

Methods included from Metasploit::Framework::Require

optionally, optionally_active_record_railtie, optionally_include_metasploit_credential_creation, #optionally_include_metasploit_credential_creation, optionally_require_metasploit_db_gem_engines

Methods included from Rex::Post::HWBridge::Ui::Console::CommandDispatcher

check_hash, #client, #log_error, #msf_loaded?, set_hash

Methods included from Ui::Text::DispatcherShell::CommandDispatcher

#cmd_help, #cmd_help_help, #cmd_help_tabs, #deprecated_cmd, #deprecated_commands, #deprecated_help, #docs_dir, #help_to_s, included, #print, #print_error, #print_good, #print_line, #print_status, #print_warning, #tab_complete_directory, #tab_complete_filenames, #tab_complete_generic, #tab_complete_source_address, #unknown_command, #update_prompt

Constructor Details

#initialize(shell) ⇒ Automotive

Returns a new instance of Automotive.



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# File 'lib/rex/post/hwbridge/ui/console/command_dispatcher/automotive.rb', line 15

def initialize(shell)
  super
  self.tpjobs     = []
  self.tpjob_id   = 0
end

Instance Attribute Details

#active_bus ⇒ Object

Returns the value of attribute active_bus.



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# File 'lib/rex/post/hwbridge/ui/console/command_dispatcher/automotive.rb', line 329

def active_bus
  @active_bus
end

#tpjob_id ⇒ Object (protected)

:nodoc:



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# File 'lib/rex/post/hwbridge/ui/console/command_dispatcher/automotive.rb', line 333

def tpjob_id
  @tpjob_id
end

#tpjobs ⇒ Object (protected)

:nodoc:



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# File 'lib/rex/post/hwbridge/ui/console/command_dispatcher/automotive.rb', line 333

def tpjobs
  @tpjobs
end

Instance Method Details

#cmd_busconfig(*args) ⇒ Object

Retrieves the current confiugration of a bus



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# File 'lib/rex/post/hwbridge/ui/console/command_dispatcher/automotive.rb', line 71

def cmd_busconfig(*args)
  bus = ''
  bus_config_opts = Rex::Parser::Arguments.new(
    '-h' => [ false, 'Help banner' ],
    '-b' => [ true, 'Target bus']
  )
  bus_config_opts.parse(args) do |opt, _idx, val|
    case opt
    when '-h'
      print_line("Usage: bus_config -b <busname>\n")
      print_line(bus_config_opts.usage)
      return
    when '-b'
      bus = val
    end
  end
  unless client.automotive.is_valid_bus? bus
    print_error("You must specify a valid bus via -b")
    return
  end
  config = client.automotive.get_bus_config(bus)
  config
end

#cmd_cansend(*args) ⇒ Object

Generic CAN send packet command



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# File 'lib/rex/post/hwbridge/ui/console/command_dispatcher/automotive.rb', line 129

def cmd_cansend(*args)
  bus = ''
  id = ''
  data = ''
  cansend_opts = Rex::Parser::Arguments.new(
    '-h' => [ false, 'Help Banner' ],
    '-b' => [ true, 'Target bus'],
    '-I' => [ true, 'CAN ID'],
    '-D' => [ true, 'Data packet in Hex']
  )
  cansend_opts.parse(args) do |opt, _idx, val|
    case opt
    when '-h'
      print_line("Usage: cansend -I <ID> -D <data>\n")
      print_line(cansend_opts.usage)
      return
    when '-b'
      bus = val
    when '-I'
      id = val
    when '-D'
      data = val
    end
  end
  bus = self.active_bus if bus.blank? && !self.active_bus.nil?
  unless client.automotive.is_valid_bus? bus
    print_error("You must specify a valid bus via -b")
    return
  end
  if id.blank? || data.blank?
    print_error("You must specify a CAN ID (-I) and the data packets (-D)")
    return
  end
  success = client.automotive.cansend(bus, id, data)
  success
end

#cmd_connect(*args) ⇒ Object

‘connects’ to a bus, this retrieves the supported_methods specific to this bus



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# File 'lib/rex/post/hwbridge/ui/console/command_dispatcher/automotive.rb', line 99

def cmd_connect(*args)
  bus = ''
  connect_opts = Rex::Parser::Arguments.new(
    '-h' => [ false, 'Help Banner' ],
    '-b' => [ true, 'Target bus']
  )
  connect_opts.parse(args) do |opt, _idx, val|
    case opt
    when '-h'
      print_line("Usage: connect -b <busname>\n")
      print_line(connect_opts.usage)
      return
    when '-b'
      bus = val
    end
  end
  unless client.automotive.is_valid_bus? bus
    print_error("You must specify a valid bus via -b")
    print_line("Current active bus: #{self.active_bus}") if self.active_bus
    return
  end
  self.active_bus = bus
  client.automotive.set_active_bus(bus)
  hw_methods = client.automotive.get_supported_methods(bus)
  hw_methods
end

#cmd_isotpsend(*args) ⇒ Object

Generic ISO-TP CAN send packet command



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# File 'lib/rex/post/hwbridge/ui/console/command_dispatcher/automotive.rb', line 169

def cmd_isotpsend(*args)
  bus = ''
  id = ''
  ret = ''
  data = ''
  timeout = nil
  maxpackets = nil
  flowcontrol = false
  padding = nil
  cansend_opts = Rex::Parser::Arguments.new(
    '-h' => [ false, 'Help Banner' ],
    '-b' => [ true, 'Target bus'],
    '-I' => [ true, 'CAN ID'],
    '-R' => [ true, 'Return ID'],
    '-D' => [ true, 'Data packet in Hex (Do not include ISOTP command size)'],
    '-t' => [ true, 'Timeout value'],
    '-p' => [ true, 'Padding value, none if not specified'],
    '-C' => [ false, 'Force flow control'],
    '-m' => [ true, 'Max packets to receive']
  )
  cansend_opts.parse(args) do |opt, _idx, val|
    case opt
    when '-h'
      print_line("Usage: isotpsend -I <ID> -D <data>\n")
      print_line(cansend_opts.usage)
      return
    when '-b'
      bus = val
    when '-I'
      id = val
    when '-R'
      ret = val
    when '-D'
      data = val
    when '-t'
      timeout = val.to_i
    when '-p'
      padding = val
    when '-C'
      flowcontrol = true
    when '-m'
      maxpackets = val.to_i
    end
  end
  bus = self.active_bus if bus.blank? && !self.active_bus.nil?
  unless client.automotive.is_valid_bus? bus
    print_error("You must specify a valid bus via -b")
    return
  end
  if id.blank? || data.blank?
    print_error("You must specify a CAN ID (-I) and the data packets (-D)")
    return
  end
  if ret.blank?
    ret = (id.hex + 8).to_s(16)
    print_line("Default return set to #{ret}")
  end
  bytes = data.scan(/../)  # Break up data string into 2 char (byte) chunks
  if bytes.size > 8
    print_error("Data section can only contain a max of 8 bytes (for now)")
    return
  end
  opt = {}
  opt['TIMEOUT'] = timeout unless timeout.nil?
  opt['MAXPKTS'] = maxpackets unless maxpackets.nil?
  opt['PADDING'] = padding unless padding.nil?
  opt['FC'] = true unless flowcontrol == false
  result = client.automotive.send_isotp_and_wait_for_response(bus, id, ret, bytes, opt)
  if result.key? 'Packets'
    result['Packets'].each do |pkt|
      print_line pkt.inspect
    end
  end
  print_line(result['error'].inspect) if result.key? 'error'
  result
end

#cmd_supported_buses ⇒ Object

Lists all thesupported buses



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# File 'lib/rex/post/hwbridge/ui/console/command_dispatcher/automotive.rb', line 49

def cmd_supported_buses
  buses = client.automotive.get_supported_buses
  if buses.empty?
    print_line("none")
    return
  end
  str = "Available buses\n\n"
  first = true
  buses.each do |bus|
    unless first
      str += ", "
    end
    first = false
    str += bus["bus_name"] if bus.key? "bus_name"
  end
  str += "\n"
  print_line(str)
end

#cmd_testerpresent(*args) ⇒ Object

Sends TesterPresent packets as a background job



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# File 'lib/rex/post/hwbridge/ui/console/command_dispatcher/automotive.rb', line 249

def cmd_testerpresent(*args)
  bus = ''
  id = ''
  stop = false
  stopid = 0
  tp_opts = Rex::Parser::Arguments.new(
    '-h' => [ false, 'Help Banner' ],
    '-b' => [ true, 'Target bus' ],
    '-I' => [ true, 'CAN ID' ],
    '-x' => [ true, 'Stop TesterPresent JobID']
  )
  tp_opts.parse(args) do |opt, _idx, val|
    case opt
    when '-h'
      print_line("Usage: testerpresent -I <ID>\n")
      print_line(tp_opts.usage)
      return
    when '-b'
      bus = val
    when '-I'
      id = val
    when '-x'
      stop = true
      stopid = val.to_i
    end
  end
  bus = self.active_bus if bus.blank? && !self.active_bus.nil?
  unless client.automotive.is_valid_bus? bus
    print_error("You must specify a valid bus via -b")
    return
  end
  if id.blank? && !stop
    if self.tpjobs.size > 0
      print_line("TesterPresent is currently active")
      self.tpjobs.each_index do |jid|
        if self.tpjobs[jid]
          print_status("TesterPresent Job #{jid}: #{self.tpjobs[jid][:args].inspect}")
        end
      end
    else
      print_line("TesterPreset is not active.  Use -I to start")
    end
    return
  end
  if stop
    if self.tpjobs[stopid]
      self.tpjobs[stopid].kill
      self.tpjobs[stopid] = nil
      print_status("Stopped TesterPresent #{stopid}")
    else
      print_error("TesterPresent #{stopid} was not running")
    end
  else
    jid = self.tpjob_id
    print_status("Starting TesterPresent sender (#{self.tpjob_id})")
    self.tpjob_id += 1
    self.tpjobs[jid] = Rex::ThreadFactory.spawn("TesterPresent(#{id})-#{jid}", false, jid, args) do |myjid,xargs|
      ::Thread.current[:args] = xargs.dup
      begin
        loop do
          client.automotive.cansend(bus, id, "023E00")
          sleep(2)
        end
      rescue ::Exception => e
        print_error('Error in TesterPresent')
        elog('Error in TesterPreset', error: e)
      end
      self.tpjobs[myjid] = nil
      print_status("TesterPreset #{myjid} has stopped (#{::Thread.current[:args].inspect})")
    end
  end
end

#commands ⇒ Object

List of supported commands.



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# File 'lib/rex/post/hwbridge/ui/console/command_dispatcher/automotive.rb', line 24

def commands
  all = {
    'supported_buses'   => 'Get supported buses',
    'busconfig'         => 'Get baud configs',
    'connect'           => 'Get HW supported methods for a bus',
    'cansend'           => 'Send a CAN packet',
    'isotpsend'         => 'Send an ISO-TP Packet and get a response',
    'testerpresent'     => 'Sends TesterPresent Pulses to the bus'
  }

  reqs = {
    'supported_buses'  => ['get_supported_buses'],
    'busconfig'        => ['get_bus_config'],
    'connect'          => ['get_supported_methods'],
    'cansend'          => ['cansend'],
    'testerpresent'    => ['testpresent']
  }

  # Ensure any requirements of the command are met
  all
end

#name ⇒ Object

Name for this dispatcher



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# File 'lib/rex/post/hwbridge/ui/console/command_dispatcher/automotive.rb', line 325

def name
  'Automotive'
end