No real reason for this check
And it breaks stuff when msfvenom is run as a symlinkbug/bundler_fix
James Lee
parent
1ec87d6250
commit
541e3972f0
616
msfvenom
616
msfvenom
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@ -1,365 +1,361 @@
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#!/usr/bin/env ruby
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# -*- coding: binary -*-
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if __FILE__ == $0
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msfbase = __FILE__
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while File.symlink?(msfbase)
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msfbase = File.expand_path(File.readlink(msfbase), File.dirname(msfbase))
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end
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msfbase = __FILE__
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while File.symlink?(msfbase)
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msfbase = File.expand_path(File.readlink(msfbase), File.dirname(msfbase))
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$:.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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require 'msf/ui'
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require 'msf/base'
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require 'msf/core/payload_generator'
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class MsfVenomError < StandardError; end
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class UsageError < MsfVenomError; end
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class NoTemplateError < MsfVenomError; end
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class IncompatibleError < MsfVenomError; end
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require 'optparse'
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# Creates a new framework object.
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#
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# @note Ignores any previously cached value.
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# @param (see ::Msf::Simple::Framework.create)
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# @return [Msf::Framework]
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def init_framework(create_opts={})
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create_opts[:module_types] ||= [
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::Msf::MODULE_PAYLOAD, ::Msf::MODULE_ENCODER, ::Msf::MODULE_NOP
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]
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@framework = ::Msf::Simple::Framework.create(create_opts.merge('DisableDatabase' => true))
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end
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# Cached framework object
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#
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# @return [Msf::Framework]
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def framework
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return @framework if @framework
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init_framework
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@framework
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end
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def parse_args(args)
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opts = {}
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datastore = {}
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opt = OptionParser.new
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banner = "MsfVenom - a Metasploit standalone payload generator.\n"
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banner << "Also a replacement for msfpayload and msfencode.\n"
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banner << "Usage: #{$0} [options] <var=val>"
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opt.banner = banner
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opt.separator('')
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opt.separator('Options:')
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opt.on('-p', '--payload <payload>', String,
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'Payload to use. Specify a \'-\' or stdin to use custom payloads') do |p|
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if p == '-'
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opts[:payload] = 'stdin'
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else
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opts[:payload] = p
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end
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end
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$:.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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require 'msf/ui'
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require 'msf/base'
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require 'msf/core/payload_generator'
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class MsfVenomError < StandardError; end
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class UsageError < MsfVenomError; end
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class NoTemplateError < MsfVenomError; end
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class IncompatibleError < MsfVenomError; end
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require 'optparse'
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# Creates a new framework object.
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#
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# @note Ignores any previously cached value.
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# @param (see ::Msf::Simple::Framework.create)
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# @return [Msf::Framework]
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def init_framework(create_opts={})
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create_opts[:module_types] ||= [
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::Msf::MODULE_PAYLOAD, ::Msf::MODULE_ENCODER, ::Msf::MODULE_NOP
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]
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@framework = ::Msf::Simple::Framework.create(create_opts.merge('DisableDatabase' => true))
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opt.on('--payload-options', "List the payload's standard options") do
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opts[:list_options] = true
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end
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# Cached framework object
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#
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# @return [Msf::Framework]
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def framework
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return @framework if @framework
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init_framework
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@framework
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opt.on('-l', '--list [type]', Array, 'List a module type. Options are: payloads, encoders, nops, all') do |l|
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if l.nil? or l.empty?
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l = ["all"]
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end
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opts[:list] = l
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end
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opt.on('-n', '--nopsled <length>', Integer, 'Prepend a nopsled of [length] size on to the payload') do |n|
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opts[:nops] = n.to_i
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end
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def parse_args(args)
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opts = {}
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datastore = {}
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opt = OptionParser.new
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banner = "MsfVenom - a Metasploit standalone payload generator.\n"
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banner << "Also a replacement for msfpayload and msfencode.\n"
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banner << "Usage: #{$0} [options] <var=val>"
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opt.banner = banner
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opt.separator('')
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opt.separator('Options:')
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opt.on('-f', '--format <format>', String, "Output format (use --help-formats for a list)") do |f|
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opts[:format] = f
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end
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opt.on('-p', '--payload <payload>', String,
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'Payload to use. Specify a \'-\' or stdin to use custom payloads') do |p|
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if p == '-'
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opts[:payload] = 'stdin'
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else
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opts[:payload] = p
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end
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opt.on('--help-formats', String, "List available formats") do
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init_framework(:module_types => [])
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msg = "Executable formats\n" +
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"\t" + ::Msf::Util::EXE.to_executable_fmt_formats.join(", ") + "\n" +
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"Transform formats\n" +
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"\t" + ::Msf::Simple::Buffer.transform_formats.join(", ")
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raise UsageError, msg
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end
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opt.on('-e', '--encoder <encoder>', String, 'The encoder to use') do |e|
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opts[:encoder] = e
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end
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opt.on('-a', '--arch <arch>', String, 'The architecture to use') do |a|
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opts[:arch] = a
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end
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opt.on('--platform <platform>', String, 'The platform of the payload') do |l|
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opts[:platform] = l
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end
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opt.on('--help-platforms', String, 'List available platforms') do
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init_framework(:module_types => [])
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supported_platforms = []
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Msf::Module::Platform.subclasses.each {|c| supported_platforms << "#{c.realname.downcase}"}
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msg = "Platforms\n" +
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"\t" + supported_platforms * ", "
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raise UsageError, msg
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end
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opt.on('-s', '--space <length>', Integer, 'The maximum size of the resulting payload') do |s|
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opts[:space] = s
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end
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opt.on('--encoder-space <length>', Integer, 'The maximum size of the encoded payload (defaults to the -s value)') do |s|
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opts[:encoder_space] = s
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end
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opt.on('-b', '--bad-chars <list>', String, 'The list of characters to avoid example: \'\x00\xff\'') do |b|
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opts[:badchars] = Rex::Text.hex_to_raw(b)
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end
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opt.on('-i', '--iterations <count>', Integer, 'The number of times to encode the payload') do |i|
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opts[:iterations] = i
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end
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opt.on('-c', '--add-code <path>', String, 'Specify an additional win32 shellcode file to include') do |x|
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opts[:add_code] = x
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end
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opt.on('-x', '--template <path>', String, 'Specify a custom executable file to use as a template') do |x|
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opts[:template] = x
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end
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opt.on('-k', '--keep', 'Preserve the template behavior and inject the payload as a new thread') do
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opts[:keep] = true
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end
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opt.on('-o', '--out <path>', 'Save the payload') do |x|
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opts[:out] = x
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end
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opt.on('-v', '--var-name <name>', String, 'Specify a custom variable name to use for certain output formats') do |x|
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opts[:var_name] = x
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end
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opt.on('--smallest', 'Generate the smallest possible payload') do
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opts[:smallest] = true
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end
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opt.on_tail('-h', '--help', 'Show this message') do
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raise UsageError, "#{opt}"
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end
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begin
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opt.parse!(args)
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rescue OptionParser::InvalidOption => e
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raise UsageError, "Invalid option\n#{opt}"
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rescue OptionParser::MissingArgument => e
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raise UsageError, "Missing required argument for option\n#{opt}"
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end
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if opts.empty?
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raise UsageError, "No options\n#{opt}"
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end
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if args
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args.each do |x|
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k,v = x.split('=', 2)
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datastore[k.upcase] = v.to_s
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end
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opt.on('--payload-options', "List the payload's standard options") do
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opts[:list_options] = true
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if opts[:payload].to_s =~ /[\_\/]reverse/ and datastore['LHOST'].nil?
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datastore['LHOST'] = Rex::Socket.source_address
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end
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end
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opt.on('-l', '--list [type]', Array, 'List a module type. Options are: payloads, encoders, nops, all') do |l|
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if l.nil? or l.empty?
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l = ["all"]
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end
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opts[:list] = l
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end
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opt.on('-n', '--nopsled <length>', Integer, 'Prepend a nopsled of [length] size on to the payload') do |n|
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opts[:nops] = n.to_i
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end
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opt.on('-f', '--format <format>', String, "Output format (use --help-formats for a list)") do |f|
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opts[:format] = f
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end
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opt.on('--help-formats', String, "List available formats") do
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init_framework(:module_types => [])
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msg = "Executable formats\n" +
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"\t" + ::Msf::Util::EXE.to_executable_fmt_formats.join(", ") + "\n" +
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"Transform formats\n" +
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"\t" + ::Msf::Simple::Buffer.transform_formats.join(", ")
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raise UsageError, msg
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end
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opt.on('-e', '--encoder <encoder>', String, 'The encoder to use') do |e|
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opts[:encoder] = e
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end
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opt.on('-a', '--arch <arch>', String, 'The architecture to use') do |a|
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opts[:arch] = a
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end
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opt.on('--platform <platform>', String, 'The platform of the payload') do |l|
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opts[:platform] = l
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end
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opt.on('--help-platforms', String, 'List available platforms') do
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init_framework(:module_types => [])
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supported_platforms = []
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Msf::Module::Platform.subclasses.each {|c| supported_platforms << "#{c.realname.downcase}"}
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msg = "Platforms\n" +
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"\t" + supported_platforms * ", "
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raise UsageError, msg
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end
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opt.on('-s', '--space <length>', Integer, 'The maximum size of the resulting payload') do |s|
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opts[:space] = s
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end
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opt.on('--encoder-space <length>', Integer, 'The maximum size of the encoded payload (defaults to the -s value)') do |s|
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opts[:encoder_space] = s
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end
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opt.on('-b', '--bad-chars <list>', String, 'The list of characters to avoid example: \'\x00\xff\'') do |b|
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opts[:badchars] = Rex::Text.hex_to_raw(b)
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end
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opt.on('-i', '--iterations <count>', Integer, 'The number of times to encode the payload') do |i|
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opts[:iterations] = i
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end
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opt.on('-c', '--add-code <path>', String, 'Specify an additional win32 shellcode file to include') do |x|
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opts[:add_code] = x
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end
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opt.on('-x', '--template <path>', String, 'Specify a custom executable file to use as a template') do |x|
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opts[:template] = x
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end
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opt.on('-k', '--keep', 'Preserve the template behavior and inject the payload as a new thread') do
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opts[:keep] = true
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end
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opt.on('-o', '--out <path>', 'Save the payload') do |x|
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opts[:out] = x
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end
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opt.on('-v', '--var-name <name>', String, 'Specify a custom variable name to use for certain output formats') do |x|
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opts[:var_name] = x
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end
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opt.on('--smallest', 'Generate the smallest possible payload') do
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opts[:smallest] = true
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end
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opt.on_tail('-h', '--help', 'Show this message') do
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raise UsageError, "#{opt}"
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end
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if opts[:payload].nil? # if no payload option is selected assume we are reading it from stdin
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opts[:payload] = "stdin"
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end
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if opts[:payload] == 'stdin' and not opts[:list]
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$stderr.puts "Attempting to read payload from STDIN..."
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begin
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opt.parse!(args)
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rescue OptionParser::InvalidOption => e
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raise UsageError, "Invalid option\n#{opt}"
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rescue OptionParser::MissingArgument => e
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raise UsageError, "Missing required argument for option\n#{opt}"
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end
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if opts.empty?
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raise UsageError, "No options\n#{opt}"
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end
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if args
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args.each do |x|
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k,v = x.split('=', 2)
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datastore[k.upcase] = v.to_s
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end
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if opts[:payload].to_s =~ /[\_\/]reverse/ and datastore['LHOST'].nil?
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datastore['LHOST'] = Rex::Socket.source_address
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::Timeout.timeout(30) do
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opts[:stdin] = payload_stdin
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end
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rescue Timeout::Error
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opts[:stdin] = ''
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end
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if opts[:payload].nil? # if no payload option is selected assume we are reading it from stdin
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opts[:payload] = "stdin"
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end
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if opts[:payload] == 'stdin' and not opts[:list]
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$stderr.puts "Attempting to read payload from STDIN..."
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begin
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::Timeout.timeout(30) do
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opts[:stdin] = payload_stdin
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end
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rescue Timeout::Error
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opts[:stdin] = ''
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end
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end
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opts[:datastore] = datastore
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opts
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end
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opts[:datastore] = datastore
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# Read a raw payload from stdin (or whatever IO object we're currently
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# using as stdin, see {#initialize})
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#
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# @return [String]
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def payload_stdin
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@in = $stdin
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@in.binmode
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payload = @in.read
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payload
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end
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opts
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end
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def dump_payloads
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init_framework(:module_types => [ ::Msf::MODULE_PAYLOAD ])
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tbl = Rex::Ui::Text::Table.new(
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'Indent' => 4,
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'Header' => "Framework Payloads (#{framework.stats.num_payloads} total)",
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'Columns' =>
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[
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"Name",
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"Description"
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])
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framework.payloads.each_module { |name, mod|
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tbl << [ name, mod.new.description.split.join(' ') ]
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}
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# Read a raw payload from stdin (or whatever IO object we're currently
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# using as stdin, see {#initialize})
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#
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# @return [String]
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def payload_stdin
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@in = $stdin
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@in.binmode
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payload = @in.read
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payload
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end
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"\n" + tbl.to_s + "\n"
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end
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def dump_payloads
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init_framework(:module_types => [ ::Msf::MODULE_PAYLOAD ])
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tbl = Rex::Ui::Text::Table.new(
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'Indent' => 4,
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'Header' => "Framework Payloads (#{framework.stats.num_payloads} total)",
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'Columns' =>
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[
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"Name",
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"Description"
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])
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def dump_encoders(arch = nil)
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init_framework(:module_types => [ ::Msf::MODULE_ENCODER ])
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tbl = Rex::Ui::Text::Table.new(
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'Indent' => 4,
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'Header' => "Framework Encoders" + ((arch) ? " (architectures: #{arch})" : ""),
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'Columns' =>
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[
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"Name",
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"Rank",
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"Description"
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])
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cnt = 0
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framework.payloads.each_module { |name, mod|
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tbl << [ name, mod.new.description.split.join(' ') ]
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}
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framework.encoders.each_module(
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'Arch' => arch ? arch.split(',') : nil) { |name, mod|
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"\n" + tbl.to_s + "\n"
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end
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def dump_encoders(arch = nil)
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init_framework(:module_types => [ ::Msf::MODULE_ENCODER ])
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tbl = Rex::Ui::Text::Table.new(
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'Indent' => 4,
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'Header' => "Framework Encoders" + ((arch) ? " (architectures: #{arch})" : ""),
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'Columns' =>
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[
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"Name",
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"Rank",
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"Description"
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])
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cnt = 0
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framework.encoders.each_module(
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'Arch' => arch ? arch.split(',') : nil) { |name, mod|
|
||||
tbl << [ name, mod.rank_to_s, mod.new.name ]
|
||||
|
||||
cnt += 1
|
||||
}
|
||||
|
||||
(cnt > 0) ? "\n" + tbl.to_s + "\n" : "\nNo compatible encoders found.\n\n"
|
||||
end
|
||||
end
|
||||
|
||||
def dump_nops
|
||||
init_framework(:module_types => [ ::Msf::MODULE_NOP ])
|
||||
tbl = Rex::Ui::Text::Table.new(
|
||||
'Indent' => 4,
|
||||
'Header' => "Framework NOPs (#{framework.stats.num_nops} total)",
|
||||
'Columns' =>
|
||||
[
|
||||
"Name",
|
||||
"Description"
|
||||
])
|
||||
def dump_nops
|
||||
init_framework(:module_types => [ ::Msf::MODULE_NOP ])
|
||||
tbl = Rex::Ui::Text::Table.new(
|
||||
'Indent' => 4,
|
||||
'Header' => "Framework NOPs (#{framework.stats.num_nops} total)",
|
||||
'Columns' =>
|
||||
[
|
||||
"Name",
|
||||
"Description"
|
||||
])
|
||||
|
||||
framework.nops.each_module { |name, mod|
|
||||
tbl << [ name, mod.new.description.split.join(' ') ]
|
||||
}
|
||||
framework.nops.each_module { |name, mod|
|
||||
tbl << [ name, mod.new.description.split.join(' ') ]
|
||||
}
|
||||
|
||||
"\n" + tbl.to_s + "\n"
|
||||
end
|
||||
"\n" + tbl.to_s + "\n"
|
||||
end
|
||||
|
||||
|
||||
|
||||
begin
|
||||
generator_opts = parse_args(ARGV)
|
||||
rescue MsfVenomError, Msf::OptionValidateError => e
|
||||
$stderr.puts "Error: #{e.message}"
|
||||
exit(1)
|
||||
end
|
||||
begin
|
||||
generator_opts = parse_args(ARGV)
|
||||
rescue MsfVenomError, Msf::OptionValidateError => e
|
||||
$stderr.puts "Error: #{e.message}"
|
||||
exit(1)
|
||||
end
|
||||
|
||||
if generator_opts[:list]
|
||||
generator_opts[:list].each do |mod|
|
||||
case mod.downcase
|
||||
when "payloads", "payload", "p"
|
||||
$stdout.puts dump_payloads
|
||||
when "encoders", "encoder", "e"
|
||||
$stdout.puts dump_encoders(generator_opts[:arch])
|
||||
when "nops", "nop", "n"
|
||||
$stdout.puts dump_nops
|
||||
when "all"
|
||||
# Init here so #dump_payloads doesn't create a framework with
|
||||
# only payloads, etc.
|
||||
init_framework
|
||||
$stdout.puts dump_payloads
|
||||
$stdout.puts dump_encoders
|
||||
$stdout.puts dump_nops
|
||||
else
|
||||
$stderr.puts "Invalid module type. These are valid: payloads, encoders, nops, all"
|
||||
end
|
||||
if generator_opts[:list]
|
||||
generator_opts[:list].each do |mod|
|
||||
case mod.downcase
|
||||
when "payloads", "payload", "p"
|
||||
$stdout.puts dump_payloads
|
||||
when "encoders", "encoder", "e"
|
||||
$stdout.puts dump_encoders(generator_opts[:arch])
|
||||
when "nops", "nop", "n"
|
||||
$stdout.puts dump_nops
|
||||
when "all"
|
||||
# Init here so #dump_payloads doesn't create a framework with
|
||||
# only payloads, etc.
|
||||
init_framework
|
||||
$stdout.puts dump_payloads
|
||||
$stdout.puts dump_encoders
|
||||
$stdout.puts dump_nops
|
||||
else
|
||||
$stderr.puts "Invalid module type. These are valid: payloads, encoders, nops, all"
|
||||
end
|
||||
exit(0)
|
||||
end
|
||||
exit(0)
|
||||
end
|
||||
|
||||
if generator_opts[:list_options]
|
||||
payload_mod = framework.payloads.create(generator_opts[:payload])
|
||||
|
||||
if payload_mod.nil?
|
||||
$stderr.puts "Invalid payload: #{generator_opts[:payload]}"
|
||||
exit
|
||||
end
|
||||
|
||||
if generator_opts[:list_options]
|
||||
payload_mod = framework.payloads.create(generator_opts[:payload])
|
||||
$stderr.puts "Options for #{payload_mod.fullname}:\n\n"
|
||||
$stdout.puts ::Msf::Serializer::ReadableText.dump_module(payload_mod, ' ')
|
||||
|
||||
if payload_mod.nil?
|
||||
$stderr.puts "Invalid payload: #{generator_opts[:payload]}"
|
||||
exit
|
||||
end
|
||||
$stderr.puts "Advanced options for #{payload_mod.fullname}:\n\n"
|
||||
$stdout.puts ::Msf::Serializer::ReadableText.dump_advanced_options(payload_mod, ' ')
|
||||
|
||||
$stderr.puts "Options for #{payload_mod.fullname}:\n\n"
|
||||
$stdout.puts ::Msf::Serializer::ReadableText.dump_module(payload_mod, ' ')
|
||||
$stderr.puts "Evasion options for #{payload_mod.fullname}:\n\n"
|
||||
$stdout.puts ::Msf::Serializer::ReadableText.dump_evasion_options(payload_mod, ' ')
|
||||
exit(0)
|
||||
end
|
||||
|
||||
$stderr.puts "Advanced options for #{payload_mod.fullname}:\n\n"
|
||||
$stdout.puts ::Msf::Serializer::ReadableText.dump_advanced_options(payload_mod, ' ')
|
||||
generator_opts[:framework] = framework
|
||||
generator_opts[:cli] = true
|
||||
|
||||
$stderr.puts "Evasion options for #{payload_mod.fullname}:\n\n"
|
||||
$stdout.puts ::Msf::Serializer::ReadableText.dump_evasion_options(payload_mod, ' ')
|
||||
exit(0)
|
||||
end
|
||||
begin
|
||||
venom_generator = Msf::PayloadGenerator.new(generator_opts)
|
||||
payload = venom_generator.generate_payload
|
||||
rescue ::Exception => e
|
||||
elog("#{e.class} : #{e.message}\n#{e.backtrace * "\n"}")
|
||||
$stderr.puts "Error: #{e.message}"
|
||||
end
|
||||
|
||||
generator_opts[:framework] = framework
|
||||
generator_opts[:cli] = true
|
||||
# No payload generated, no point to go on
|
||||
exit(2) unless payload
|
||||
|
||||
if generator_opts[:out]
|
||||
begin
|
||||
venom_generator = Msf::PayloadGenerator.new(generator_opts)
|
||||
payload = venom_generator.generate_payload
|
||||
::File.open(generator_opts[:out], 'wb') do |f|
|
||||
f.write(payload)
|
||||
end
|
||||
$stderr.puts "Saved as: #{generator_opts[:out]}"
|
||||
rescue ::Exception => e
|
||||
# If I can't save it, then I can't save it. I don't think it matters what error.
|
||||
elog("#{e.class} : #{e.message}\n#{e.backtrace * "\n"}")
|
||||
$stderr.puts "Error: #{e.message}"
|
||||
end
|
||||
|
||||
# No payload generated, no point to go on
|
||||
exit(2) unless payload
|
||||
|
||||
if generator_opts[:out]
|
||||
begin
|
||||
::File.open(generator_opts[:out], 'wb') do |f|
|
||||
f.write(payload)
|
||||
end
|
||||
$stderr.puts "Saved as: #{generator_opts[:out]}"
|
||||
rescue ::Exception => e
|
||||
# If I can't save it, then I can't save it. I don't think it matters what error.
|
||||
elog("#{e.class} : #{e.message}\n#{e.backtrace * "\n"}")
|
||||
$stderr.puts "Error: #{e.message}"
|
||||
end
|
||||
else
|
||||
output_stream = $stdout
|
||||
output_stream.binmode
|
||||
output_stream.write payload
|
||||
# trailing newline for pretty output
|
||||
$stderr.puts unless payload =~ /\n$/
|
||||
end
|
||||
|
||||
else
|
||||
output_stream = $stdout
|
||||
output_stream.binmode
|
||||
output_stream.write payload
|
||||
# trailing newline for pretty output
|
||||
$stderr.puts unless payload =~ /\n$/
|
||||
end
|
||||
|
|
|
|||
Loading…
Reference in New Issue