Class: Msf::Ui::Console::CommandDispatcher::Payload

Inherits:
Object
  • Object
show all
Includes:
ModuleCommandDispatcher
Defined in:
lib/msf/ui/console/command_dispatcher/payload.rb

Overview

Payload module command dispatcher.

Constant Summary collapse

@@supported_formats =

Load supported formats

Msf::Simple::Buffer.transform_formats + \
Msf::Util::EXE.to_executable_fmt_formats
@@generate_opts =
Rex::Parser::Arguments.new(
  "-p" => [ true,  "The platform of the payload" ],
  "-n" => [ true,  "Prepend a nopsled of [length] size on to the payload" ],
  "-f" => [ true,  "Output format: #{@@supported_formats.join(',')}" ],
  "-E" => [ false, "Force encoding" ],
  "-e" => [ true,  "The encoder to use" ],
  "-P" => [ true,  "Total desired payload size, auto-produce appropriate NOP sled length"],
  "-S" => [ true,  "The new section name to use when generating (large) Windows binaries"],
  "-b" => [ true,  "The list of characters to avoid example: '\\x00\\xff'" ],
  "-i" => [ true,  "The number of times to encode the payload" ],
  "-x" => [ true,  "Specify a custom executable file to use as a template" ],
  "-k" => [ false, "Preserve the template behavior and inject the payload as a new thread" ],
  "-o" => [ true,  "The output file name (otherwise stdout)" ],
  "-O" => [ true,  "Deprecated: alias for the '-o' option" ],
  "-v" => [ false, "Verbose output (display stage in addition to stager)" ],
  "-h" => [ false, "Show this message" ],
)

Instance Attribute Summary

Attributes included from Msf::Ui::Console::CommandDispatcher

#driver

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

#shell, #tab_complete_items

Instance Method Summary collapse

Methods included from ModuleCommandDispatcher

#check_multiple, #check_progress, #check_show_progress, #check_simple, #cmd_check, #cmd_check_help, #cmd_reload, #cmd_reload_help, #mod, #mod=, #reload, #report_vuln

Methods included from Msf::Ui::Console::CommandDispatcher

#active_module, #active_module=, #active_session, #active_session=, #build_range_array, #docs_dir, #framework, #initialize, #log_error, #remove_lines

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

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

Instance Method Details

#cmd_generate(*args) ⇒ Object

Generates a payload.


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# File 'lib/msf/ui/console/command_dispatcher/payload.rb', line 87

def cmd_generate(*args)
  # Parse the arguments
  encoder_name = nil
  sled_size    = nil
  pad_nops     = nil
  sec_name     = nil
  option_str   = nil
  badchars     = nil
  format       = "ruby"
  ofile        = nil
  iter         = 1
  force        = nil
  template     = nil
  plat         = nil
  keep         = false
  verbose      = false

  @@generate_opts.parse(args) do |opt, _idx, val|
    case opt
    when '-b'
      badchars = Rex::Text.dehex(val)
    when '-e'
      encoder_name = val
    when '-E'
      force = true
    when '-n'
      sled_size = val.to_i
    when '-P'
      pad_nops = val.to_i
    when '-S'
      sec_name = val
    when '-f'
      format = val
    when '-o'
      if val.include?('=')
        print_error("The -o parameter of 'generate' is now preferred to indicate the output file, like with msfvenom\n")
        option_str = val
      else
        ofile = val
      end
    when '-O'
      print("Usage of the '-O' parameter is deprecated, prefer '-o' to indicate the output file")
      ofile = val
    when '-i'
      iter = val
    when '-k'
      keep = true
    when '-p'
      plat = val
    when '-x'
      template = val
    when '-v'
      verbose = true
    when '-h'
      cmd_generate_help
      return false
    else
      unless val.include?('=')
        cmd_generate_help
        return false
      end

      mod.datastore.import_options_from_s(val)
    end
  end
  if encoder_name.nil? && mod.datastore['ENCODER']
    encoder_name = mod.datastore['ENCODER']
  end

  # Generate the payload
  begin
    buf = mod.generate_simple(
      'BadChars'    => badchars,
      'Encoder'     => encoder_name,
      'Format'      => format,
      'NopSledSize' => sled_size,
      'PadNops'     => pad_nops,
      'SecName'     => sec_name,
      'OptionStr'   => option_str,
      'ForceEncode' => force,
      'Template'    => template,
      'Platform'    => plat,
      'KeepTemplateWorking' => keep,
      'Iterations' => iter,
      'Verbose' => verbose
    )
  rescue
    log_error("Payload generation failed: #{$ERROR_INFO}")
    return false
  end

  if !ofile
    # Display generated payload
    puts(buf)
  else
    print_status("Writing #{buf.length} bytes to #{ofile}...")
    fd = File.open(ofile, "wb")
    fd.write(buf)
    fd.close
  end
  true
end

#cmd_generate_helpObject


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# File 'lib/msf/ui/console/command_dispatcher/payload.rb', line 75

def cmd_generate_help
  print_line "Usage: generate [options]"
  print_line
  print_line "Generates a payload. Datastore options may be supplied after normal options."
  print_line
  print_line "Example: generate -f python LHOST=127.0.0.1"
  print @@generate_opts.usage
end

#cmd_generate_tabs(str, words) ⇒ Object


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# File 'lib/msf/ui/console/command_dispatcher/payload.rb', line 190

def cmd_generate_tabs(str, words)
  fmt = {
    '-b' => [ true                                              ],
    '-E' => [ nil                                               ],
    '-e' => [ framework.encoders.map { |refname, mod| refname } ],
    '-h' => [ nil                                               ],
    '-o' => [ true                                              ],
    '-P' => [ true                                              ],
    '-S' => [ true                                              ],
    '-f' => [ :file                                             ],
    '-t' => [ @@supported_formats                               ],
    '-p' => [ true                                              ],
    '-k' => [ nil                                               ],
    '-x' => [ :file                                             ],
    '-i' => [ true                                              ],
    '-v' => [ nil                                               ]
  }
  tab_complete_generic(fmt, str, words)
end

#cmd_to_handler(*_args) ⇒ Object


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# File 'lib/msf/ui/console/command_dispatcher/payload.rb', line 48

def cmd_to_handler(*_args)
  handler = framework.modules.create('exploit/multi/handler')

  handler_opts = {
    'Payload'     => mod.refname,
    'LocalInput'  => driver.input,
    'LocalOutput' => driver.output,
    'RunAsJob'    => true,
    'Options'     => {
      'ExitOnSession' => false,
    }
  }

  handler.datastore.merge!(mod.datastore)
  handler.exploit_simple(handler_opts)
  job_id = handler.job_id

  print_status "Payload Handler Started as Job #{job_id}"
end

#commandsObject

Returns the hash of commands specific to payload modules.


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# File 'lib/msf/ui/console/command_dispatcher/payload.rb', line 41

def commands
  super.update(
    "generate" => "Generates a payload",
    "to_handler" => "Creates a handler with the specified payload"
  )
end

#nameObject

Returns the command dispatcher name.


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# File 'lib/msf/ui/console/command_dispatcher/payload.rb', line 71

def name
  "Payload"
end