148 lines
4.0 KiB
Ruby
148 lines
4.0 KiB
Ruby
# -*- coding: binary -*-
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require 'rex/proto/rmi'
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require 'rex/java/serialization'
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require 'stringio'
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module Msf
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module Java
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module Rmi
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module Client
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require 'msf/java/rmi/util'
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require 'msf/java/rmi/builder'
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require 'msf/java/rmi/client/registry'
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require 'msf/java/rmi/client/jmx'
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include Msf::Java::Rmi::Util
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include Msf::Java::Rmi::Builder
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include Msf::Java::Rmi::Client::Registry
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include Msf::Java::Rmi::Client::Jmx
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include Exploit::Remote::Tcp
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# Returns the target host
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#
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# @return [String]
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def rhost
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datastore['RHOST']
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end
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# Returns the target port
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#
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# @return [Fixnum]
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def rport
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datastore['RPORT']
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end
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# Returns the RMI server peer
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#
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# @return [String]
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def peer
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"#{rhost}:#{rport}"
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end
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# Sends a RMI header stream
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#
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# @param opts [Hash]
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# @option opts [Rex::Socket::Tcp] :sock
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# @return [Fixnum] the number of bytes sent
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# @see Msf::Rmi::Client::Streams#build_header
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def send_header(opts = {})
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nsock = opts[:sock] || sock
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stream = build_header(opts)
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nsock.put(stream.encode + "\x00\x00\x00\x00\x00\x00")
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end
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# Sends a RMI CALL stream
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#
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# @param opts [Hash]
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# @option opts [Rex::Socket::Tcp] :sock
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# @option opts [Rex::Proto::Rmi::Model::Call] :call
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# @return [Fixnum] the number of bytes sent
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# @see Msf::Rmi::Client::Streams#build_call
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def send_call(opts = {})
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nsock = opts[:sock] || sock
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call = opts[:call] || build_call(opts)
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nsock.put(call.encode)
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end
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# Sends a RMI DGCACK stream
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#
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# @param opts [Hash]
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# @option opts [Rex::Socket::Tcp] :sock
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# @return [Fixnum] the number of bytes sent
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# @see Msf::Rmi::Client::Streams#build_dgc_ack
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def send_dgc_ack(opts = {})
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nsock = opts[:sock] || sock
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stream = build_dgc_ack(opts)
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nsock.put(stream.encode)
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end
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# Reads the Protocol Ack
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#
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# @param opts [Hash]
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# @option opts [Rex::Socket::Tcp] :sock
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# @return [Rex::Proto::Rmi::Model::ProtocolAck] if success
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# @return [NilClass] otherwise
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# @see Rex::Proto::Rmi::Model::ProtocolAck.decode
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def recv_protocol_ack(opts = {})
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nsock = opts[:sock] || sock
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data = safe_get_once(nsock)
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begin
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ack = Rex::Proto::Rmi::Model::ProtocolAck.decode(StringIO.new(data))
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rescue Rex::Proto::Rmi::DecodeError
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return nil
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end
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ack
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end
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# Reads a ReturnData message and returns the java serialized stream
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# with the return data value.
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#
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# @param opts [Hash]
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# @option opts [Rex::Socket::Tcp] :sock
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# @return [Rex::Proto::Rmi::Model::ReturnValue] if success
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# @return [NilClass] otherwise
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# @see Rex::Proto::Rmi::Model::ReturnData.decode
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def recv_return(opts = {})
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nsock = opts[:sock] || sock
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data = safe_get_once(nsock)
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begin
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return_data = Rex::Proto::Rmi::Model::ReturnData.decode(StringIO.new(data))
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rescue Rex::Proto::Rmi::DecodeError
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return nil
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end
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return_data.return_value
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end
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# Helper method to read fragmented data from a ```Rex::Socket::Tcp```
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#
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# @param nsock [Rex::Socket::Tcp]
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# @return [String]
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def safe_get_once(nsock = sock)
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data = ''
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begin
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res = nsock.get_once
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rescue ::EOFError
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res = nil
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end
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until res.nil? || res.length < 1448
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data << res
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begin
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res = nsock.get_once
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rescue ::EOFError
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res = nil
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end
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end
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data << res if res
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data
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end
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end
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end
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end
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end
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