How to Remotely Reboot an Ubuntu Machine Using Reverse Shell?
A Reverse Shell is an attack where a compromised machine connects back to an attacker’s system, allowing remote control. This bypasses firewalls, as outgoing traffic is often less restricted than incoming.
We'll create two ubuntu instances
Instance A - The Target Machine
Instance B - The Attacker's Machine
How It Works
- The Attacker setups Listener
- The Malicious payload is run to get back the shell
- Post the remote access is gained, depending on what user the listener is running
- Set up a Listener on A ( as a non root user )
- Connect from B, Execute commands and test , Try rebooting .
- Setup up Listener on A ( with root user )
- Connect from B, Execute commands , Try rebooting .
Mitigation:
To defend against reverse shells, security measures like strict firewall rules, intrusion detection/prevention systems (IDS/IPS), regular patching, network monitoring, and the use of endpoint protection solutions can be implemented. Additionally, educating users on safe browsing practices and recognizing phishing attempts can help prevent attackers from getting an initial foothold on the system.
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