rpd7_dec.rb

#!/usr/bin/env ruby
# gem install ruby-rc4
require "rc4"

dir = ARGV[0]
key = "\x5E\xAE\x45\xB3\x77\xE7\x9C\x36\x9B\x1D\xB4\x4E\xD6\x4F\xE1\x1F"

rb_files = Dir.glob("#{dir}/**/*.rb")

puts "Begin decrypting..\n"

rb_files.each do |rb_file|
  encrypted_file = File.read(rb_file, mode: "rb")
  encrypted_data = encrypted_file[4, encrypted_file.length]
  decrypter = RC4.new(key)
  decrypted_data = decrypter.decrypt(encrypted_data)
  File.open(rb_file, "w") { |file| file.write(decrypted_data) }
end

puts "#{rb_files.count} files processed."