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MOD3_Exploitation.md

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+# FILE: MOD3_Exploitation.md
+# MODULE 3: EXPLOITATION & POST-EXPLOITATION
+
+## ⚠️ ETHICAL USE DISCLAIMER
+**This module teaches offensive security techniques for AUTHORIZED ENVIRONMENTS ONLY.**
+- All exploits demonstrated are against VMs you own
+- Never use these techniques on systems without explicit written permission
+- Unauthorized computer access is illegal (Computer Fraud and Abuse Act, 18 U.S.C. § 1030)
+- Purpose: Learn offensive techniques to better defend systems
+
+## Learning Objectives
+By completing this module, you will:
+- Match discovered services to known CVEs (Common Vulnerabilities and Exposures)
+- Configure and execute exploits using Metasploit Framework
+- Understand the difference between bind and reverse shells
+- Perform post-exploitation enumeration and privilege escalation
+- Maintain persistent access to compromised systems (lab environment only)
+- Document exploitation chains for penetration testing reports
+
+---
+
+## Key Concepts
+
+### Vulnerability Assessment
+**CVE (Common Vulnerabilities and Exposures):** Standardized identifiers for publicly known security vulnerabilities.
+- Example: CVE-2011-2523 (vsftpd 2.3.4 backdoor)
+- Database: https://cve.mitre.org or https://nvd.nist.gov
+
+### The Metasploit Framework
+**Architecture:**
+- **Exploits:** Code that takes advantage of vulnerabilities
+- **Payloads:** Code executed after successful exploit (shells, backdoors)
+- **Auxiliary:** Scanner and fuzzer modules (non-exploit)
+- **Post:** Post-exploitation modules (privilege escalation, credential harvesting)
+
+### Shells Explained
+
+**Reverse Shell (Attacker Listens):**
+```
+Attacker                    Target
+   |                           |
+   |      (Listening :4444)    |
+   |<--- Connect to Attacker --| (Target initiates connection)
+   |---- Shell Access -------->|
+```
+**Why better?** Bypasses inbound firewall rules. Victim initiates "outbound" connection.
+
+---
+
+## Professor's Guide
+Once you select an exploit (`use exploit/...`), you must configure the `RHOSTS` (Remote Host / Target IP) and your `LHOST` (Local Host / Kali IP). The payload is crucial—set it to a reverse shell (`set payload linux/x86/meterpreter/reverse_tcp`). When you type `exploit`, Kali will send the malicious traffic, and if successful, the target will connect *back* to you, bypassing inbound firewall rules.
+Once you have the Meterpreter session, practice commands like `sysinfo`, `hashdump`, and `shell` to interact with the compromised operating system.
+
+**CONTINUED IN FULL VERSION - See MOD3_Exploitation_FULL.md for complete detailed labs**
+
+---
+
+**END OF MODULE 3 PREVIEW**