Exploitation, Post-Exploitation, and Privilege Escalation

Identification tells you a door is unlocked. Exploitation is walking through it. This Cover6 Community session moves from “this looks vulnerable” to actual access — on an isolated lab, on systems you own, with written authorization before anything external is ever touched.

Use this post as your read-ahead, then come back to it for the model and the vocabulary.

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The one rule that comes first

Before any of the rest of this matters: you only attack systems you own or have written permission to test. A home lab or a hosted training lab is the right place. An isolated lab and documented authorization aren’t paperwork — they’re the line between security work and a crime. Everything below assumes you’re inside that line.

Think in modules

The mental shift that makes exploitation click is to stop thinking “I need to hack this” and start thinking “which module fits this finding?” The Metasploit framework organizes the work into modules, and once you know a service and version, the question becomes simple: is there a module for this, and what does it need?

Every exploit breaks into three parts:

  • Module — the code that takes advantage of a specific weakness.
  • Payload — what gets delivered and run once the weakness is triggered.
  • Session — the access you get back when it works. That session is the foothold.

Internalize Module → Payload → Session and most of the framework stops being intimidating. You pick the module that matches the finding, set the payload that fits your situation, run it, and if it lands, you have a session.

Bind shells vs reverse shells

Your payload usually gives you a shell, and there are two shapes:

  • A bind shell opens a port on the target and waits for you to connect to it.
  • A reverse shell makes the target connect back to you.

The reverse shell is usually the better choice, because outbound connections blend in with normal traffic far more than a new listening port does — especially over a common port like 443. (That’s also exactly what the defender is trying to catch, which is why running the attack makes you a sharper analyst.)

Access is the start, not the finish

Landing a session rarely means you’re done. The account you land as is whoever was logged in — often a limited user, not an admin. That’s where the two phases after exploitation begin:

  • Post-exploitation is looking around: what’s on this machine, what credentials are lying around, what does this host connect to, what’s worth taking.
  • Privilege escalation is turning a limited foothold into full control — local misconfigurations, weak permissions, cached credentials, a service running as a higher-privileged account. If you land as a normal user and the logged-in user later turns out to be an admin, you’ve escalated.

The loop repeats: more recon from the new vantage point, more access, deeper in.

The part that actually gets paid for

Access is satisfying; the report is what the client pays for. Document exploitation evidence as you go — what you ran, what it returned, a screenshot of the proof, and the timeline. A finding marked “critical” with no evidence is a claim. The same finding with the command, the session, and the timestamp is proof. Build that habit in the lab, before it matters on a real engagement.

Land your first shell, free

The way to learn exploitation is to do it, in a place built for it. First Shell is the free Cover6 lab that runs in your browser — you get credentials and a target you’re authorized to attack, and the challenge is to get 6 of the 10 shells.

👉 Start here, free: https://www.cover6solutions.com/product/cover6-first-shell-free-access/

As you work, run the model from this post: match the module, set the payload, catch the session, then look around and escalate.

Where this path leads

Exploitation and privilege escalation are core Penetration Tester work on Chrysalus. Build your free profile and add your First Shell run as a project.

Watch the replay

We ran this live in the Cover6 Community — documented, isolated, authorized, and then straight into the exploitation. Planning to attend a future meetup? Use this post as your read-ahead, and catch the replay above.

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