hacker olympics

brute.rb

require 'uri'
require 'net/http'
require 'net/https'
require 'ruby-progressbar'
require 'set'

def add_bad_ip(ip)
  File.open('ips.txt', 'a') {|f| f.puts ip }
end

def add_response(ip, response)
  File.open('response.txt', 'a') do |f|
    f.puts '-'*100
    f.puts ip
    f.puts '-'*100
    f.puts response
    f.puts '-'*100
  end
end

def bad_ips
  @bad_ips ||= begin 
    ips = Set.new
    File.open('ips.txt', 'r') do |f|
      f.each_line do |line|
        ips << line.strip.downcase
      end
    end
    ips
  end
end

octets = [0, 1, 8, 16, 46, 74, 96, 106, 109, 126, 127, 186, 192, 255]
ips = octets.permutation(4).to_a
ips = ips.map{|ip| ip.join('.')}

progress = ProgressBar.create({
  :title       => "Brute",
  :total       => ips.count,
  :starting_at => bad_ips.to_a.count,
  :format      => '%t |%b[%P%%]%i| %c/%C [%E]'
})

ips = ips - bad_ips.to_a

while ip = ips.shift
  begin
    raise 'invalid' if ip =~ /^0\./
    raise 'invalid' if ip =~ /^127\./
    raise 'invalid' if ip =~ /^192\./
    raise 'invalid' if ip =~ /255$/

    uri  = URI.parse("http://#{ip}/hackerolympics.json")
    http = Net::HTTP.new(uri.host, uri.port)
    http.open_timeout = 5
    http.read_timeout = 5
    request = Net::HTTP::Post.new(uri.request_uri)
    request.set_form_data({'name' => 'jonathon storer'})

    response = http.request(request)

    add_response(ip, response.body)
  rescue 'invalid'
    add_bad_ip(ip)
  rescue Exception => e
    add_bad_ip(ip)
  ensure
    progress.increment
  end
end