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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 = 8
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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, Generic Command Execution',
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      'Description'   => 'Executes the supplied command',
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      'Author'        => 'hdm',
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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::None,
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      'Session'       => Msf::Sessions::CommandShell,
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      'PayloadType'   => 'cmd',
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      'RequiredCmd'   => 'generic',
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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_options(
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      [
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        OptString.new('CMD', [ true, "The command string to execute" ]),
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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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    return datastore['CMD'] || ''
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  end
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end
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