Day 10: Advanced Privilege Escalation & Security Audits 🕵️‍♂️

Day 10 of my #1HourADayJourney. Today was all about breaking things to learn how they are built. If you want to secure a system, you have to think like an attacker. We explored the "hidden" ways a regular user can jump to root . 🛠️ The Security Auditor's Toolkit Today, I audited a system for common vulnerabilities. Here is what I learned: 1. The SUID Danger Zone SUID (Set User ID) allows a program to run with the privileges of the file owner. The Vulnerability: If a binary is owned by root and has the s bit set, it runs as root. If it's a shell, you get a root shell. The Lesson: Always check for binaries with s permissions during your system audit. 2. Cron-based Escalation One of the most dangerous patterns I found: The Scenario: A script owned by root is executable by a group I'm in, or writable by me. The Exploit: I can inject a payload into the script, wait for the cron daemon to trigger it as root , and spawn a privileged shell ( /bin/bash -p ). 3. PATH Hijacking If a cron job call