ctf-pwn-techniques

What problem does it solve?

This Skill provides in-depth knowledge and techniques for exploiting various vulnerabilities in CTF challenges, including stack overflow, heap UAF, time side-channels, and multi-step exploit chaining.

Core Features & Use Cases

• Stack Overflow: Techniques for exploiting negative index, partial overwrite, and stack pivot vulnerabilities.
• Heap UAF: Strategies for exploiting heap underflow, safe-linking bypass, and FSOP (glibc 2.32+).
• Time Side-Channel: Methods for exploiting binaries that execute user shellcode with fd restrictions.
• Multi-Bug Chaining: Combining multiple vulnerabilities to achieve arbitrary code execution.
• Race Condition/TOCTOU: Exploiting race conditions and time-of-check-time-of-use vulnerabilities.
• realloc Edge Case: Exploiting unexpected behavior of realloc on NULL and valid pointers.
• strcspn OOB: Exploiting vulnerabilities in custom protocol parsers using strcspn.
• Flag Residue Manipulation: Exploiting unsigned overflow and stale flag bits for privilege escalation.
• Use Case: Help security professionals and penetration testers to analyze and exploit vulnerabilities in CTF challenges, improving their understanding of real-world attack vectors.

Quick Start

Run the 'exploit' script to automate the exploitation of a CTF challenge binary with a known vulnerability.