124 lines
2.5 KiB
Ruby
124 lines
2.5 KiB
Ruby
require 'msf/core'
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module Msf
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###
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#
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# This module exposes methods for accessing NDMP services
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#
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###
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module Exploit::Remote::NDMP
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include Exploit::Remote::Tcp
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#
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# Creates an instance of a NDMP exploit module.
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#
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def initialize(info = {})
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super
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# Register the options that all NDMP exploits may make use of.
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register_options(
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[
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Opt::RHOST,
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Opt::RPORT(10000),
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], Msf::Exploit::Remote::NDMP)
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self.recv_buff = ''
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end
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#
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# Flush the receive buffer on a new connection
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#
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def connect
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super
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self.recv_buff = ''
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end
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#
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# This method dumps ndmp version information
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#
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def ndmp_info
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connect
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req = [
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1, # Sequence number
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Time.now.to_i, # Current time
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0, # Message type (request)
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0x108, # Message name (version)
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0, # Reply sequence number
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0, # Error status
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].pack('NNNNNN')
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resp = ndmp_recv()
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ndmp_send(req)
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resp = ndmp_recv()
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disconnect
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if !(resp and resp.length > 28)
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return false
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end
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info = { }
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i = 32
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vend_len = resp[i, 4].unpack('N')[0]
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vend = resp[i + 4, vend_len]
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i += vend_len + 4 + 1
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prod_len = resp[i, 4].unpack('N')[0]
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prod = resp[i + 4, prod_len]
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i += prod_len + 4 + 1
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vers_len = resp[i, 4].unpack('N')[0]
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vers = resp[i + 4, vers_len]
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i += vers_len + 4 + 1
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info['Version'] = vers
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info['Product'] = prod
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info['Vendor'] = vend
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return info
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end
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#
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# This method reads from the socket and parses out a single
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# NDMP response, buffering the rest
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#
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def ndmp_recv(nsock = self.sock)
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# Attempt to read at least four bytes (the length value)
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if (self.recv_buff.length < 4)
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self.recv_buff << ( sock.get_once(self.recv_buff.length - 4, 5) || '' )
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end
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# If we did not recieve a full length value, return early
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if (self.recv_buff.length < 4)
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return false
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end
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# Read the length header out of the message
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dlen = self.recv_buff[0, 4].unpack('N')[0] & 0x7fffffff
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# Read any pending data and append it to the buffer
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self.recv_buff << ( sock.get_once || '' )
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# Do we have the entire response message?
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if (self.recv_buff.length >= dlen + 4)
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return self.recv_buff.slice!(0, dlen + 4)
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end
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return false
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end
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#
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# This method tacks a length header on a packet then sends
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# it out the socket
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#
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def ndmp_send(data, nsock = self.sock)
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nsock.put( [ data.length + 0x80000000 ].pack('N') + data )
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end
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attr_accessor :recv_buff
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end
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end
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