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#!/usr/bin/env ruby
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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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# This script lists each payload module along with its length
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# NOTE: No encoding or BadChar handling is performed
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#
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msfbase = __FILE__
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while File.symlink?(msfbase)
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  msfbase = File.expand_path(File.readlink(msfbase), File.dirname(msfbase))
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end
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$:.unshift(File.expand_path(File.join(File.dirname(msfbase), '..', '..', 'lib')))
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require 'msfenv'
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$:.unshift(ENV['MSF_LOCAL_LIB']) if ENV['MSF_LOCAL_LIB']
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require 'rex'
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Indent = '    '
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# Initialize the simplified framework instance.
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$framework = Msf::Simple::Framework.create(
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  :module_types => [ Msf::MODULE_PAYLOAD ],
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  'DisableDatabase' => true
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)
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# Process special var/val pairs...
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Msf::Ui::Common.process_cli_arguments($framework, ARGV)
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options = ARGV.join(',')
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tbl = Rex::Text::Table.new(
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  'Header'  => 'Payload Lengths',
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  'Indent'  => Indent.length,
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  'Columns' => [ 'Payload', 'Length' ]
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)
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enc = nil
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$framework.payloads.each_module { |payload_name, mod|
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  len = 'Error: Unknown error!'
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  begin
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    # Create the payload instance
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    payload = mod.new
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    raise "Invalid payload" if not payload
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    # Set the variables from the cmd line
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    payload.datastore.import_options_from_s(options)
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    # Skip non-specified architectures
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    if (ds_arch = payload.datastore['ARCH'])
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      next if not payload.arch?(ds_arch)
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    end
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    # Skip non-specified platforms
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    if (ds_plat = payload.datastore['PLATFORM'])
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      ds_plat = Msf::Module::PlatformList.transform(ds_plat)
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      next if not payload.platform.supports?(ds_plat)
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    end
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    len = payload.size
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    if len > 0
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      len = len.to_s
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    else
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      len = "Error: Empty payload"
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    end
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  rescue
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    len = "Error: #{$!}"
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  end
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  tbl << [ payload_name, len ]
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}
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puts tbl.to_s
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