Module: PWN::Plugins::MSR206

Defined in:
lib/pwn/plugins/msr206.rb

Overview

This plugin is used for interacting with a three track MSR206 Magnetic Stripe Reader / Writer

Class Method Summary collapse

Class Method Details

.authors ⇒ Object

Author(s)

0day Inc. <[email protected]>



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# File 'lib/pwn/plugins/msr206.rb', line 1157

public_class_method def self.authors
  "AUTHOR(S):
    0day Inc. <[email protected]>
  "
end

.backup_card(opts = {}) ⇒ Object

Supported Method Parameters

PWN::Plugins::MSR206.backup_card(

msr206_obj: 'required - msr206_obj returned from #connect method'

)



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# File 'lib/pwn/plugins/msr206.rb', line 884

public_class_method def self.backup_card(opts = {})
  msr206_obj = opts[:msr206_obj]
  type = opts[:type].to_s.scrub.strip.chomp.to_sym

  # Read Card to Backup
  track_data = read_card(
    msr206_obj: msr206_obj
  )

  file = ''
  backup_msg = ''
  loop do
    if backup_msg.empty?
      exec_resp = exec(
        msr206_obj: msr206_obj,
        cmd: :green_flash
      )
    end

    print 'Enter File Name to Save Backup: '
    file = gets.scrub.chomp.strip
    file_dir = File.dirname(file)
    break if Dir.exist?(file_dir)

    backup_msg = "\n****** ERROR: Directory #{file_dir} for #{file} does not exist ******"
    puts backup_msg
    exec_resp = exec(
      msr206_obj: msr206_obj,
      cmd: :green_off
    )
    exec_resp = exec(
      msr206_obj: msr206_obj,
      cmd: :yellow_flash
    )
  end

  File.write(file, "#{JSON.pretty_generate(track_data)}\n")
  exec_resp = exec(
    msr206_obj: msr206_obj,
    cmd: :yellow_off
  )

  puts 'complete.'

  track_data
rescue StandardError => e
  raise e
end

.connect(opts = {}) ⇒ Object

Supported Method Parameters

msr206_obj = PWN::Plugins::MSR206.connect(

block_dev: 'optional - serial block device path (defaults to /dev/ttyUSB0)',
baud: 'optional - (defaults to 9600)',
data_bits: 'optional - (defaults to 8)',
stop_bits: 'optional - (defaults to 1)',
parity: 'optional - :even|:mark|:odd|:space|:none (defaults to :none),'
flow_control: 'optional - :none|:hard|:soft (defaults to :soft)'

)



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# File 'lib/pwn/plugins/msr206.rb', line 18

public_class_method def self.connect(opts = {})
  # Default Baud Rate for this Device is 19200
  opts[:block_dev] = '/dev/ttyUSB0' unless opts[:block_dev]
  opts[:baud] = 9_600 unless opts[:baud]
  opts[:data_bits] = 8 unless opts[:data_bits]
  opts[:stop_bits] = 1 unless opts[:stop_bits]
  opts[:parity] = :none unless opts[:parity]
  opts[:flow_control] = :soft unless opts[:flow_control]
  msr206_obj = PWN::Plugins::Serial.connect(opts)
rescue StandardError => e
  disconnect(msr206_obj: msr206_obj) unless msr206_obj.nil?
  raise e
end

.copy_card(opts = {}) ⇒ Object

Supported Method Parameters

PWN::Plugins::MSR206.copy_card(

msr206_obj: 'required - msr206_obj returned from #connect method'

)



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# File 'lib/pwn/plugins/msr206.rb', line 1013

public_class_method def self.copy_card(opts = {})
  msr206_obj = opts[:msr206_obj]

  # Read Card to Backup
  track_data = backup_card(
    msr206_obj: msr206_obj
  )

  encoding = track_data.first[:encoding] if track_data.length == 3
  write_card(
    msr206_obj: msr206_obj,
    encoding: encoding,
    track_data: track_data
  )
rescue StandardError => e
  raise e
end

.disconnect(opts = {}) ⇒ Object

Supported Method Parameters

PWN::Plugins::MSR206.disconnect(

msr206_obj: 'required - msr206_obj returned from #connect method'

)



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# File 'lib/pwn/plugins/msr206.rb', line 1147

public_class_method def self.disconnect(opts = {})
  PWN::Plugins::Serial.disconnect(
    serial_obj: opts[:msr206_obj]
  )
rescue StandardError => e
  raise e
end

.exec(opts = {}) ⇒ Object

Supported Method Parameters

PWN::Plugins::MSR206.exec(

msr206_obj: 'required - msr206_obj returned from #connect method'
cmd: 'required - cmd returned from #list_cmds method',
params: 'optional - parameters for specific command returned from #list_params method'

)



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# File 'lib/pwn/plugins/msr206.rb', line 431

public_class_method def self.exec(opts = {})
  msr206_obj = opts[:msr206_obj]
  cmd = opts[:cmd].to_s.scrub.strip.chomp
  params = opts[:params]
  raise 'ERROR: params argument must be a byte array (e.g. [0x41]).' if params && !params.instance_of?(Array)

  params_bytes = []
  case cmd.to_sym
  when :proto_usi0
    cmd_bytes = [0x55, 0x53, 0x49, 0x30]
  when :proto_usi1
    cmd_bytes = [0x55, 0x53, 0x49, 0x31]
  when :resume_transmission_to_host
    cmd_bytes = [0x11]
  when :pause_transmission_to_host
    cmd_bytes = [0x13]
  when :abort_command
    cmd_bytes = [0x1B]
  when :configuration_request
    cmd_bytes = [0x23]
  when :reproduce_last_command
    cmd_bytes = [0x25]
  when :card_edge_detect
    cmd_bytes = [0x26]
  when :green_flash
    cmd_bytes = [0x28]
  when :red_flash
    cmd_bytes = [0x29]
  when :version_report
    cmd_bytes = [0x39]
  when :set_write_density
    cmd_bytes = [0x3B]
  when :set_temp_write_current
    cmd_bytes = [0x3C]
  when :view_temp_write_current
    cmd_bytes = [0x3E]
  when :write_verify
    cmd_bytes = [0x3F]
  when :arm_to_write_with_raw
    cmd_bytes = [0x40]
  when :load_iso_std_data_for_writing_track1
    cmd_bytes = [0x41]
  when :load_iso_std_data_for_writing_track2
    cmd_bytes = [0x42]
  when :load_iso_std_data_for_writing_track3
    cmd_bytes = [0x43]
  when :load_custom_data_for_writing_track1
    cmd_bytes = [0x45]
  when :load_custom_data_for_writing_track2
    cmd_bytes = [0x46]
  when :load_custom_data_for_writing_track3
    cmd_bytes = [0x47]
  when :tx_error_data
    cmd_bytes = [0x49]
  when :yellow_on
    cmd_bytes = [0x4B]
  when :green_on
    cmd_bytes = [0x4C]
  when :red_on
    cmd_bytes = [0x4D]
  when :set_write_density_210_bpi_tracks2
    cmd_bytes = [0x4E]
  when :set_write_density_210_bpi_tracks13
    cmd_bytes = [0x4F]
  when :arm_to_read
    cmd_bytes = [0x50]
  when :tx_iso_std_data_track1
    cmd_bytes = [0x51]
  when :tx_iso_std_data_track2
    cmd_bytes = [0x52]
  when :tx_iso_std_data_track3
    cmd_bytes = [0x53]
  when :tx_custom_data_forward_track1
    cmd_bytes = [0x55]
  when :tx_custom_data_forward_track2
    cmd_bytes = [0x56]
  when :tx_custom_data_forward_track3
    cmd_bytes = [0x57]
  when :tx_passbook_data
    cmd_bytes = [0x58]
  when :arm_to_write_no_raw
    cmd_bytes = [0x5A]
  when :set_default_write_current
    cmd_bytes = [0x5B]
  when :view_default_write_current
    cmd_bytes = [0x5D]
  when :alt_load_iso_std_data_for_writing_track1
    cmd_bytes = [0x61]
  when :alt_load_iso_std_data_for_writing_track2
    cmd_bytes = [0x62]
  when :alt_load_iso_std_data_for_writing_track3
    cmd_bytes = [0x63]
  when :load_passbook_data_for_writing
    cmd_bytes = [0x6A]
  when :yellow_off
    cmd_bytes = [0x6B]
  when :green_off
    cmd_bytes = [0x6C]
  when :red_off
    cmd_bytes = [0x6D]
  when :set_write_density_75_bpi_tracks2
    cmd_bytes = [0x6E]
  when :set_write_density_75_bpi_tracks13
    cmd_bytes = [0x6F]
  when :arm_to_read_w_speed_prompts
    cmd_bytes = [0x70]
  when :alt_tx_iso_std_data_track1
    cmd_bytes = [0x71]
  when :alt_tx_iso_std_data_track2
    cmd_bytes = [0x72]
  when :alt_tx_iso_std_data_track3
    cmd_bytes = [0x73]
  when :alt_tx_passbook_data
    cmd_bytes = [0x78]
  when :arm_to_write_with_raw_speed_prompts
    cmd_bytes = [0x7A]
  when :yellow_flash
    cmd_bytes = [0x7C]
  when :simulate_power_cycle_warm_reset
    cmd_bytes = [0x7F]
  else
    raise "Unsupported Command: #{cmd}.  Supported commands are:\n#{list_cmds}\n\n\n"
  end

  # If parameters to a command are set, append them.
  cmd_bytes += params if params
  # Execute the command.
  PWN::Plugins::Serial.request(
    serial_obj: msr206_obj,
    payload: cmd_bytes
  )

  # Parse commands response(s).
  # Return an array of hashes.
  parse_responses(
    msr206_obj: msr206_obj,
    cmd: cmd.to_sym,
    cmd_bytes: cmd_bytes
  )
rescue StandardError => e
  raise e
ensure
  # Flush Responses for Next Request
  PWN::Plugins::Serial.flush_session_data
end

.get_config(opts = {}) ⇒ Object

Supported Method Parameters

PWN::Plugins::MSR206.get_config(

msr206_obj: 'required - msr206_obj returned from #connect method'

)



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# File 'lib/pwn/plugins/msr206.rb', line 1091

public_class_method def self.get_config(opts = {})
  msr206_obj = opts[:msr206_obj]

  # --------------------------------------------------
  # Bit|Bit = 0                  |Bit = 1
  # --------------------------------------------------
  # 0  |Track 1 Read not present |Track 1 Read present
  # 1  |Track 2 Read not present |Track 2 Read present
  # 2  |Track 3 Read not present |Track 3 Read present
  # 3  |not used – should be 0   |not used
  # 4  |Track 3 Write not present|Track 3 Write present
  # 5  |Track 2 Write not present|Track 2 Write present
  # 6  |Track 1 Write not present|Track 1 Write present
  # 7  |parity bit**             |parity bit**
  exec_resp = PWN::Plugins::MSR206.exec(
    msr206_obj: msr206_obj,
    cmd: :configuration_request
  )

  config_arr = exec_resp[:binary].first.reverse.chars
  config_hash = {}
  config_arr.each_with_index do |bit_str, i|
    bit = bit_str.to_i
    config_hash[:track1_read] = false if bit.zero? && i.zero?
    config_hash[:track1_read] = true if bit == 1 && i.zero?

    config_hash[:track2_read] = false if bit.zero? && i == 1
    config_hash[:track2_read] = true if bit == 1 && i == 1

    config_hash[:track3_read] = false if bit.zero? && i == 2
    config_hash[:track3_read] = true if bit == 1 && i == 2

    config_hash[:not_used] if i == 3

    config_hash[:track1_write] = false if bit.zero? && i == 4
    config_hash[:track1_write] = true if bit == 1 && i == 4

    config_hash[:track2_write] = false if bit.zero? && i == 5
    config_hash[:track2_write] = true if bit == 1 && i == 5

    config_hash[:track3_write] = false if bit.zero? && i == 6
    config_hash[:track3_write] = true if bit == 1 && i == 6

    config_hash[:parity] = true if bit == 1 && i == 7
  end

  config_hash
rescue StandardError => e
  raise e
end

.help ⇒ Object

Display Usage for this Module



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# File 'lib/pwn/plugins/msr206.rb', line 1165

public_class_method def self.help
  puts "USAGE:
    msr206_obj = #{self}.connect(
      block_dev: 'optional serial block device path (defaults to /dev/ttyUSB0)',
      baud: 'optional (defaults to 9600)',
      data_bits: 'optional (defaults to 8)',
      stop_bits: 'optional (defaults to 1)',
      parity: 'optional - :even|:mark|:odd|:space|:none (defaults to :none),'
      flow_control: 'optional - :none|:hard|:soft (defaults to :none)'
    )

    cmds = #{self}.list_cmds

    parsed_cmd_resp_arr = #{self}.exec(
      msr206_obj: 'required msr206_obj returned from #connect method',
      cmd: 'required - cmd returned from #list_cmds method',
      params: 'optional - parameters for specific command returned from #list_params method'
    )

    #{self}.disconnect(
      msr206_obj: 'required msr206_obj returned from #connect method'
    )

    #{self}.authors
  "
end

.list_cmds ⇒ Object

Supported Method Parameters

cmds = PWN::Plugins::MSR206.list_cmds



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# File 'lib/pwn/plugins/msr206.rb', line 34

public_class_method def self.list_cmds
  # Returns an Array of Symbols
  cmds = %i[
    proto_usi0
    proto_usi1
    version_report
    simulate_power_cycle_warm_reset
    configuration_request
    reproduce_last_command
    resume_transmission_to_host
    pause_transmission_to_host
    abort_command
    red_on
    red_off
    red_flash
    green_on
    green_off
    green_flash
    yellow_on
    yellow_off
    yellow_flash
    arm_to_read
    arm_to_read_w_speed_prompts
    tx_iso_std_data_track1
    tx_iso_std_data_track2
    tx_iso_std_data_track3
    alt_tx_iso_std_data_track1
    alt_tx_iso_std_data_track2
    alt_tx_iso_std_data_track3
    tx_error_data
    tx_custom_data_forward_track1
    tx_custom_data_forward_track2
    tx_custom_data_forward_track3
    tx_passbook_data
    alt_tx_passbook_data
    write_verify
    card_edge_detect
    load_iso_std_data_for_writing_track1
    load_iso_std_data_for_writing_track2
    load_iso_std_data_for_writing_track3
    alt_load_iso_std_data_for_writing_track1
    alt_load_iso_std_data_for_writing_track2
    alt_load_iso_std_data_for_writing_track3
    load_passbook_data_for_writing
    load_custom_data_for_writing_track1
    load_custom_data_for_writing_track2
    load_custom_data_for_writing_track3
    set_write_density
    set_write_density_210_bpi_tracks13
    set_write_density_75_bpi_tracks13
    set_write_density_210_bpi_tracks2
    set_write_density_75_bpi_tracks2
    set_default_write_current
    view_default_write_current
    set_temp_write_current
    view_temp_write_current
    arm_to_write_with_raw
    arm_to_write_no_raw
    arm_to_write_with_raw_speed_prompts
  ]
rescue StandardError => e
  raise e
end

.load_card_from_file(opts = {}) ⇒ Object

Supported Method Parameters

PWN::Plugins::MSR206.load_card_from_file(

msr206_obj: 'required - msr206_obj returned from #connect method'

)



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# File 'lib/pwn/plugins/msr206.rb', line 1036

public_class_method def self.load_card_from_file(opts = {})
  msr206_obj = opts[:msr206_obj]

  file = ''
  restore_msg = ''
  loop do
    if restore_msg.empty?
      exec_resp = exec(
        msr206_obj: msr206_obj,
        cmd: :green_flash
      )
    end

    print 'Enter File Name to Restore to Card: '
    file = gets.scrub.chomp.strip
    break if File.exist?(file)

    restore_msg = "\n****** ERROR: #{file} does not exist ******"
    puts restore_msg
    exec_resp = exec(
      msr206_obj: msr206_obj,
      cmd: :green_off
    )
    exec_resp = exec(
      msr206_obj: msr206_obj,
      cmd: :yellow_flash
    )
  end

  # Read Card from Backup
  track_data = JSON.parse(
    File.read(file),
    symbolize_names: true
  )

  exec_resp = exec(
    msr206_obj: msr206_obj,
    cmd: :yellow_off
  )

  encoding = track_data.first[:encoding] if track_data.length == 3
  write_card(
    msr206_obj: msr206_obj,
    encoding: encoding,
    track_data: track_data
  )
rescue StandardError => e
  raise e
end

.read_card(opts = {}) ⇒ Object

Supported Method Parameters

PWN::Plugins::MSR206.read_card(

msr206_obj: 'required - msr206_obj returned from #connect method'

)



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# File 'lib/pwn/plugins/msr206.rb', line 844

public_class_method def self.read_card(opts = {})
  msr206_obj = opts[:msr206_obj]
  type = opts[:type].to_s.scrub.strip.chomp.to_sym

  encoding = :waiting_for_selection
  loop do
    puts "\nENCODING OPTIONS:"
    puts '[(I)SO Standard]'
    puts '[(A)LT ISO Standard]'
    puts '[(R)aw]'
    print 'ENCODING TYPE >>> '
    encoding_choice = gets.scrub.chomp.strip.upcase.to_sym

    case encoding_choice
    when :I
      encoding = :iso
      break
    when :A
      encoding = :iso_alt
      break
    when :R
      encoding = :raw
      break
    end
  end

  wait_for_swipe(
    msr206_obj: msr206_obj,
    type: :arm_to_read,
    encoding: encoding
  )
rescue StandardError => e
  raise e
end

.write_card(opts = {}) ⇒ Object

Supported Method Parameters

PWN::Plugins::MSR206.write_card(

msr206_obj: 'required - msr206_obj returned from #connect method',
encoding: 'required - :iso || :alt_iso || :raw',
track_data: 'requred - track data to write (see #backup_card for structure)'

)



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# File 'lib/pwn/plugins/msr206.rb', line 940

public_class_method def self.write_card(opts = {})
  msr206_obj = opts[:msr206_obj]
  encoding = opts[:encoding].to_s.scrub.strip.chomp.to_sym
  track_data = opts[:track_data]

  puts 'IN ORDER TO GET BLANK TRACKS, A STRONG MAGNETIC FIELD MUST BE PRESENT TO FIRST WIPE THE CARD TARGETED FOR WRITING.'
  # puts 'Default Write Current:'
  # exec_resp = exec(
  #   msr206_obj: msr206_obj,
  #   cmd: :view_default_write_current
  # )
  # puts exec_resp.inspect

  # puts 'Temporary Write Current:'
  # exec_resp = exec(
  #   msr206_obj: msr206_obj,
  #   cmd: :view_temp_write_current
  # )
  # puts exec_resp.inspect

  coercivity = :waiting_for_selection
  loop do
    puts "\nCOERCIVITY OPTIONS:"
    puts '[(H)igh (Most Often Black Stripe)]'
    puts '[(L)ow  (Most Often Brown Stripe)]'
    print 'COERCIVITY LEVEL >>> '
    coercivity_choice = gets.scrub.chomp.strip.upcase.to_sym

    # Write Current Settings vs. Media Coercivties
    # Media Coercivity (Oersteds)|Write Current Setting*|Typical Usage
    # 300                        |36                    |Low coercivity
    # 600                        |                      |
    # 1800                       |                      |
    # 3600+                      |255                   |Typical high corcivity

    case coercivity_choice
    when :H
      coercivity = [0x32, 0x35, 0x35]
      break
    when :L
      coercivity = [0x30, 0x33, 0x36]
      break
    end
  end

  exec_resp = exec(
    msr206_obj: msr206_obj,
    cmd: :set_temp_write_current,
    params: coercivity
  )

  track_data = wait_for_swipe(
    msr206_obj: msr206_obj,
    type: :arm_to_write_no_raw,
    encoding: encoding,
    track_data: track_data
  )

  exec_resp = PWN::Plugins::MSR206.exec(
    msr206_obj: msr206_obj,
    cmd: :simulate_power_cycle_warm_reset
  )

  track_data
rescue StandardError => e
  raise e
end