Class: Msf::RPC::Service

Inherits:
Object
  • Object
show all
Defined in:
lib/msf/core/rpc/v10/service.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(framework, options = {}) ⇒ Service

Returns a new instance of Service.



16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
 
# File 'lib/msf/core/rpc/v10/service.rb', line 16

def initialize(framework, options={})
  self.framework = framework
  self.handlers = {}
  self.options  = {
    :ssl  => true,
    :cert => nil,
    :uri  => "/uri",
    :host => '127.0.0.1',
    :port => 3790
  }.merge(options)

  self.str_encoding = ''.encoding.name
  self.srvhost = self.options[:host]
  self.srvport = self.options[:port]
  self.uri     = self.options[:uri]
  self.debug   = self.options[:debug]

  self.dispatcher_timeout = self.options[:dispatcher_timeout] || 7200
  self.token_timeout      = self.options[:token_timeout] || 300
  self.tokens             = self.options[:tokens] || {}
  self.users              = self.options[:users] || []
  self.job_status_tracker = Msf::RPC::RpcJobStatusTracker.new

  add_handler("health",  Msf::RPC::RPC_Health.new(self))
  add_handler("core",    Msf::RPC::RPC_Core.new(self))
  add_handler("auth",    Msf::RPC::RPC_Auth.new(self))
  add_handler("console", Msf::RPC::RPC_Console.new(self))
  add_handler("module",  Msf::RPC::RPC_Module.new(self))
  add_handler("session", Msf::RPC::RPC_Session.new(self))
  add_handler("plugin",  Msf::RPC::RPC_Plugin.new(self))
  add_handler("job",     Msf::RPC::RPC_Job.new(self))
  add_handler("db",      Msf::RPC::RPC_Db.new(self))
end

Instance Attribute Details

#debug ⇒ Object

Returns the value of attribute debug.



13
14
15
 
# File 'lib/msf/core/rpc/v10/service.rb', line 13

def debug
  @debug
end

#default_handler ⇒ Object

Returns the value of attribute default_handler.



12
13
14
 
# File 'lib/msf/core/rpc/v10/service.rb', line 12

def default_handler
  @default_handler
end

#dispatcher_timeout ⇒ Object

Returns the value of attribute dispatcher_timeout.



13
14
15
 
# File 'lib/msf/core/rpc/v10/service.rb', line 13

def dispatcher_timeout
  @dispatcher_timeout
end

#framework ⇒ Object

Returns the value of attribute framework.



12
13
14
 
# File 'lib/msf/core/rpc/v10/service.rb', line 12

def framework
  @framework
end

#handlers ⇒ Object

Returns the value of attribute handlers.



12
13
14
 
# File 'lib/msf/core/rpc/v10/service.rb', line 12

def handlers
  @handlers
end

#job_status_tracker ⇒ Object

Returns the value of attribute job_status_tracker.



14
15
16
 
# File 'lib/msf/core/rpc/v10/service.rb', line 14

def job_status_tracker
  @job_status_tracker
end

#options ⇒ Object

Returns the value of attribute options.



11
12
13
 
# File 'lib/msf/core/rpc/v10/service.rb', line 11

def options
  @options
end

#service ⇒ Object

Returns the value of attribute service.



11
12
13
 
# File 'lib/msf/core/rpc/v10/service.rb', line 11

def service
  @service
end

#srvhost ⇒ Object

Returns the value of attribute srvhost.



11
12
13
 
# File 'lib/msf/core/rpc/v10/service.rb', line 11

def srvhost
  @srvhost
end

#srvport ⇒ Object

Returns the value of attribute srvport.



11
12
13
 
# File 'lib/msf/core/rpc/v10/service.rb', line 11

def srvport
  @srvport
end

#str_encoding ⇒ Object

Returns the value of attribute str_encoding.



13
14
15
 
# File 'lib/msf/core/rpc/v10/service.rb', line 13

def str_encoding
  @str_encoding
end

#token_timeout ⇒ Object

Returns the value of attribute token_timeout.



13
14
15
 
# File 'lib/msf/core/rpc/v10/service.rb', line 13

def token_timeout
  @token_timeout
end

#tokens ⇒ Object

Returns the value of attribute tokens.



12
13
14
 
# File 'lib/msf/core/rpc/v10/service.rb', line 12

def tokens
  @tokens
end

#uri ⇒ Object

Returns the value of attribute uri.



11
12
13
 
# File 'lib/msf/core/rpc/v10/service.rb', line 11

def uri
  @uri
end

#users ⇒ Object

Returns the value of attribute users.



12
13
14
 
# File 'lib/msf/core/rpc/v10/service.rb', line 12

def users
  @users
end

Instance Method Details

#add_handler(group, handler) ⇒ Object 



90
91
92
 
# File 'lib/msf/core/rpc/v10/service.rb', line 90

def add_handler(group, handler)
  self.handlers[group] = handler
end

#add_token(token) ⇒ Object 



171
172
173
 
# File 'lib/msf/core/rpc/v10/service.rb', line 171

def add_token(token)
  self.tokens[token] = [nil, nil, nil, true]
end

#add_user(user, pass) ⇒ Object 



179
180
181
182
183
184
185
186
187
 
# File 'lib/msf/core/rpc/v10/service.rb', line 179

def add_user(user, pass)
  self.users.each do |r|
    if r[0] == user
      r[1] = pass
      return
    end
  end
  self.users << [user, pass]
end

#authenticate(token) ⇒ Object 



193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
 
# File 'lib/msf/core/rpc/v10/service.rb', line 193

def authenticate(token)
  stale = []


  unless (token && token.kind_of?(::String))
    return false
  end

  # Force the encoding to ASCII-8BIT
  token = token.unpack("C*").pack("C*")

  self.tokens.each_key do |t|
    user,ctime,mtime,perm = self.tokens[t]
    if !perm && mtime + self.token_timeout < Time.now.to_i
      stale << t
    end
  end

  stale.each { |t| self.tokens.delete(t) }

  unless self.tokens[token]

    begin
      if framework.db.active && ::Mdm::ApiKey.find_by_token(token)
        return true
      end
    rescue ::Exception => e
    end

    return false
  end

  self.tokens[token][2] = Time.now.to_i
  true
end

#on_request_uri(cli, req) ⇒ Object 



76
77
78
79
80
81
82
83
84
85
86
87
88
 
# File 'lib/msf/core/rpc/v10/service.rb', line 76

def on_request_uri(cli, req)
  res = Rex::Proto::Http::Response.new()
  res["Content-Type"] = "binary/message-pack"

  begin
    res.body = process(req).to_msgpack
  rescue Msf::RPC::Exception => e
    elog('RPC Exception', error: e)
    res.body = process_exception(e).to_msgpack
    res.code = e.code
  end
  cli.send_response(res)
end

#process(req) ⇒ Object 



94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
 
# File 'lib/msf/core/rpc/v10/service.rb', line 94

def process(req)
  msg  = nil

  begin
    if req.method != "POST"
      if req && req.method
        raise ArgumentError, "Invalid Request Verb: '#{req.method.inspect}'"
      else
        raise ArgumentError, "Invalid Request: '#{req.inspect}'"
      end
    end

    unless (req.headers["Content-Type"] && req.headers["Content-Type"] == "binary/message-pack")
      raise ArgumentError, "Invalid Content Type"
    end

    msg = MessagePack.unpack(req.body)

    unless (msg && msg.kind_of?(::Array) && msg.length > 0)
      raise ArgumentError, "Invalid Message Format"
    end

    msg.map { |a| a.respond_to?(:force_encoding) ? a.force_encoding(self.str_encoding) : a }

    group, funct = msg.shift.split(".", 2)

    unless self.handlers[group]
      raise ArgumentError, "Unknown API Group: '#{group.inspect}'"
    end

    doauth = true
    mname  = 'rpc_' + funct

    if self.handlers[group].respond_to?(mname + '_noauth')
      doauth = false
      mname << '_noauth'
    end

    unless self.handlers[group].respond_to?(mname)
      raise ArgumentError, "Unknown API Call: '#{mname.inspect}'"
    end

    if doauth
      token = msg.shift
      unless authenticate(token)
        raise ::Msf::RPC::Exception.new(401, "Invalid Authentication Token")
      end
    end

    ::Timeout.timeout(self.dispatcher_timeout) { self.handlers[group].send(mname, *msg) }

  rescue ::Exception => e
    elog('RPC Exception', error: e)
    process_exception(e)
  end
end

#process_exception(e) ⇒ Object 



151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
 
# File 'lib/msf/core/rpc/v10/service.rb', line 151

def process_exception(e)
  r = {
    :error           => true,
    :error_class     => e.class.to_s,
    :error_string    => e.to_s,
    :error_backtrace => e.backtrace.map{|x| x.sub(/^.*lib\//, 'lib/') } # Dont expose the install path
  }

  if e.respond_to?(:message)
    r[:error_message] = e.message
  end

  if e.respond_to?(:code)
    r[:error_code] = e.code
  end

  r
end

#remove_token ⇒ Object 



175
176
177
 
# File 'lib/msf/core/rpc/v10/service.rb', line 175

def remove_token
  self.tokens.delete(token)
end

#remove_user(user) ⇒ Object 



189
190
191
 
# File 'lib/msf/core/rpc/v10/service.rb', line 189

def remove_user(user)
  self.users = self.users.select{|r| r[0] != user }
end

#start ⇒ Object 



50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
 
# File 'lib/msf/core/rpc/v10/service.rb', line 50

def start
  self.service = Rex::ServiceManager.start(
    Rex::Proto::Http::Server,
    self.srvport,
    self.srvhost,
    self.options[:ssl],
    self.options[:context],
    self.options[:comm],
    self.options[:cert]
  )

  self.service.add_resource(self.uri, {
    'Proc' => Proc.new { |cli, req| on_request_uri(cli, req) },
    'Path' => self.uri
  })
end

#stop ⇒ Object 



67
68
69
70
 
# File 'lib/msf/core/rpc/v10/service.rb', line 67

def stop
  self.service.stop
  self.service.deref
end

#wait ⇒ Object 



72
73
74
 
# File 'lib/msf/core/rpc/v10/service.rb', line 72

def wait
  self.service.wait
end