107 lines
2.5 KiB
Ruby
107 lines
2.5 KiB
Ruby
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#!/usr/bin/env ruby
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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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require 'rex'
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require 'msf/core'
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require 'msf/base'
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require 'optparse'
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module Jsobfu
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class OptsConsole
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def self.parse(args)
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options = {}
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parser = OptionParser.new do |opt|
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opt.banner = "Usage: #{__FILE__} [options]"
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opt.separator ''
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opt.separator 'Specific options:'
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opt.on('-t', '--iteration <Fixnum>', "Number of times to obfuscate the JavaScript") do |v|
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options[:iteration] = v
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end
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opt.on('-i', '--input <String>', "The JavaScript file you want to obfuscate (default=1)") do |v|
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options[:input] = v
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end
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opt.on('-o', '--output <String>', "Save the obfuscated file as") do |v|
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options[:output] = v
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end
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opt.on_tail('-h', '--help', 'Show this message') do
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$stdout.puts opt
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exit
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end
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end
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parser.parse!(args)
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if options.empty?
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raise OptionParser::MissingArgument, 'No options set, try -h for usage'
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elsif options[:iteration] && options[:iteration] !~ /^\d+$/
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raise OptionParser::InvalidOption, "#{options[:format]} is not a number"
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elsif !::File.exists?(options[:input].to_s)
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raise OptionParser::InvalidOption, "Cannot find: #{options[:input]}"
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end
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options[:iteration] = 1 unless options[:iteration]
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options
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end
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end
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class Driver
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def initialize
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begin
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@opts = OptsConsole.parse(ARGV)
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rescue OptionParser::ParseError => e
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$stderr.puts "[x] #{e.message}"
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exit
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end
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end
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def run
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original_js = read_js(@opts[:input])
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js = ::Rex::Exploitation::JSObfu.new(original_js)
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js.obfuscate(:iterations=>@opts[:iteration].to_i)
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js = js.to_s
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output_stream = $stdout
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output_stream.binmode
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output_stream.write js
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$stderr.puts
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if @opts[:output]
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save_as(js, @opts[:output])
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end
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end
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private
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def read_js(path)
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js = ::File.open(path, 'rb') { |f| js = f.read }
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js
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end
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def save_as(js, outfile)
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File.open(outfile, 'wb') do |f|
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f.write(js)
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end
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$stderr.puts
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$stderr.puts "File saved as: #{outfile}"
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end
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end
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end
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if __FILE__ == $PROGRAM_NAME
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driver = Jsobfu::Driver.new
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driver.run
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end
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