Class: Rex::Post::Meterpreter::Extensions::Stdapi::Sys::Config

Inherits:
Object
  • Object
show all
Defined in:
lib/rex/post/meterpreter/extensions/stdapi/sys/config.rb

Overview

This class provides access to remote system configuration and information.

Constant Summary collapse

SYSTEM_SID = 
'S-1-5-18'

Instance Method Summary collapse

Constructor Details

#initialize(client) ⇒ Config

Returns a new instance of Config.



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# File 'lib/rex/post/meterpreter/extensions/stdapi/sys/config.rb', line 25

def initialize(client)
  self.client = client
end

Instance Method Details

#drop_token ⇒ Object

Drops any assumed token



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# File 'lib/rex/post/meterpreter/extensions/stdapi/sys/config.rb', line 122

def drop_token
  req = Packet.create_request('stdapi_sys_config_drop_token')
  res = client.send_request(req)
  client.unicode_filter_encode( res.get_tlv_value(TLV_TYPE_USER_NAME) )
end

#getenv(var_name) ⇒ Object

Returns the value of a single requested environment variable name



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# File 'lib/rex/post/meterpreter/extensions/stdapi/sys/config.rb', line 80

def getenv(var_name)
  _, value = getenvs(var_name).first
  value
end

#getenvs(*var_names) ⇒ Object

Returns a hash of requested environment variables, along with their values. If a requested value doesn’t exist in the response, then the value wasn’t found.



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# File 'lib/rex/post/meterpreter/extensions/stdapi/sys/config.rb', line 58

def getenvs(*var_names)
  request = Packet.create_request('stdapi_sys_config_getenv')

  var_names.each do |v|
    request.add_tlv(TLV_TYPE_ENV_VARIABLE, v)
  end

  response = client.send_request(request)
  result = {}

  response.each(TLV_TYPE_ENV_GROUP) do |env|
    var_name = env.get_tlv_value(TLV_TYPE_ENV_VARIABLE)
    var_value = env.get_tlv_value(TLV_TYPE_ENV_VALUE)
    result[var_name] = var_value
  end

  result
end

#getprivs ⇒ Object

Enables all possible privileges



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# File 'lib/rex/post/meterpreter/extensions/stdapi/sys/config.rb', line 131

def getprivs
  req = Packet.create_request('stdapi_sys_config_getprivs')
  ret = []
  res = client.send_request(req)
  res.each(TLV_TYPE_PRIVILEGE) do |p|
    ret << p.value
  end
  ret
end

#getsid ⇒ Object

Gets the SID of the current process/thread.



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# File 'lib/rex/post/meterpreter/extensions/stdapi/sys/config.rb', line 41

def getsid
  request = Packet.create_request('stdapi_sys_config_getsid')
  response = client.send_request(request)
  response.get_tlv_value(TLV_TYPE_SID)
end

#getuid ⇒ Object

Returns the username that the remote side is running as.



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# File 'lib/rex/post/meterpreter/extensions/stdapi/sys/config.rb', line 32

def getuid
  request  = Packet.create_request('stdapi_sys_config_getuid')
  response = client.send_request(request)
  client.unicode_filter_encode( response.get_tlv_value(TLV_TYPE_USER_NAME) )
end

#is_system? ⇒ Boolean

Determine if the current process/thread is running as SYSTEM

Returns:

  • (Boolean) 


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# File 'lib/rex/post/meterpreter/extensions/stdapi/sys/config.rb', line 50

def is_system?
  getsid == SYSTEM_SID
end

#revert_to_self ⇒ Object

Calls RevertToSelf on the remote machine.



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# File 'lib/rex/post/meterpreter/extensions/stdapi/sys/config.rb', line 105

def revert_to_self
  client.send_request(Packet.create_request('stdapi_sys_config_rev2self'))
end

#steal_token(pid) ⇒ Object

Steals the primary token from a target process



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# File 'lib/rex/post/meterpreter/extensions/stdapi/sys/config.rb', line 112

def steal_token(pid)
  req = Packet.create_request('stdapi_sys_config_steal_token')
  req.add_tlv(TLV_TYPE_PID, pid.to_i)
  res = client.send_request(req)
  client.unicode_filter_encode( res.get_tlv_value(TLV_TYPE_USER_NAME) )
end

#sysinfo ⇒ Object

Returns a hash of information about the remote computer.



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# File 'lib/rex/post/meterpreter/extensions/stdapi/sys/config.rb', line 88

def sysinfo
  request  = Packet.create_request('stdapi_sys_config_sysinfo')
  response = client.send_request(request)

  {
    'Computer'        => response.get_tlv_value(TLV_TYPE_COMPUTER_NAME),
    'OS'              => response.get_tlv_value(TLV_TYPE_OS_NAME),
    'Architecture'    => response.get_tlv_value(TLV_TYPE_ARCHITECTURE),
    'System Language' => response.get_tlv_value(TLV_TYPE_LANG_SYSTEM),
    'Domain'          => response.get_tlv_value(TLV_TYPE_DOMAIN),
    'Logged On Users' => response.get_tlv_value(TLV_TYPE_LOGGED_ON_USER_COUNT)
  }
end