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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::Post
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  include Msf::Post::Windows::Powershell
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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' => 'Windows Powershell Execution Post Module',
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        'Description' => %q{
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          This module will execute a powershell script in a meterpreter session.
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          The user may also enter text substitutions to be made in memory before execution.
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          Setting VERBOSE to true will output both the script prior to execution and the results.
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        },
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        'License' => MSF_LICENSE,
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        'Platform' => ['windows'],
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        'SessionTypes' => ['meterpreter'],
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        'Author' => [
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          'Nicholas Nam (nick[at]executionflow.org)', # original meterpreter script
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          'RageLtMan <rageltman[at]sempervictus>' # post module and libs
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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('SCRIPT', [true, 'Path to the local PS script or command string to execute']),
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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('SUBSTITUTIONS', [false, 'Script subs in gsub format - original,sub;original,sub']),
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      ]
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    )
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  end
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  def run
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    # Make sure we meet the requirements before running the script, note no need to return
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    # unless error
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    raise 'Powershell not available' if !have_powershell?
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    # Preprocess the Powershell::Script object with substitions from Exploit::Powershell
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    script = make_subs(read_script(datastore['SCRIPT']), process_subs(datastore['SUBSTITUTIONS']))
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    # Execute in session
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    print_status psh_exec(script)
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    print_good 'Finished!'
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  end
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end
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