{"id":22261971,"url":"https://github.com/potreic/write-up-tpw-ctf-2024","last_synced_at":"2026-02-06T21:01:13.245Z","repository":{"id":263302748,"uuid":"889940280","full_name":"potreic/Write-Up-TPW-CTF-2024","owner":"potreic","description":"CTF walkthrough solutions: web exploits (XXE Injection), binary overflows, cracking ciphers, and detecting in digital forensics. 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This is a guide for solving various Capture The Flag (CTF) challenges. Intended for learning, practicing, or just curious, I've wrote detailed step-by-step solutions to help you understand and tackle each challenge.\n\n## Repository Structure 📂\n\nHere’s how the repository is laid out:\n\n- **webex/**  \n  Learn about **XML External Entity (XXE) Injection**. This involves exploiting vulnerabilities in XML parsers to access sensitive server data. 🛠️\n\n- **binex/**  \n  Dive into **binary exploitation** challenges. Specifically, we cover integer overflow issues, where adding two positive numbers (`n1 \u003e 0` and `n2 \u003e 0`) somehow gives you a negative result. 🤔\n\n- **crypto/**  \n  Crack some codes with classic cryptographic techniques. This section includes challenges like brute-forcing Caesar ciphers and understanding how simple encryption works. 🔑\n\n- **forensic/**  \n  Analyze corrupted hex data and TCP captures to uncover hidden information. Put your detective skills to the test. 🕵️‍♂️\n\n\u003e **Note:** Each directory comes with its own `README.md` explaining the challenge in detail **AND** includes a challenge file or source code so you can try breaking it yourself. Perfect for hands-on learning! 💻✨\n\n---\n\n## What’s in Each Section? 🤓\n\n### Web Exploitation (`webex`)\nThis section dives into **XXE Injection**—a vulnerability that can expose files or system information via XML parsing. You'll learn to craft payloads to exploit this vulnerability and understand how it works step by step. \n\n### Binary Exploitation (`binex`)\nBinary exploitation challenges here revolve around **integer overflow**, where numbers don’t behave as they should due to computational limits. This section explains how to detect the vulnerability and write an exploit for it.\n\n### Cryptography (`crypto`)\nFocuses on cracking encryption schemes like **Caesar ciphers**. The walkthroughs will show you how to script a brute-force attack and decode the flag.\n\n### Forensics (`forensic`)\nIn this section, you’ll analyze corrupted hex files or dissect TCP packet captures to recover hidden data. The walkthroughs explain tools and methods to get to the solution.\n\n---\n\n## How to Use This Repository 🚀\n\n1. Pick a category from the list above and go to its folder.\n2. Read the `README.md` for an explanation of the challenge and the solution.\n3. Try solving the included challenge files or source code to test your skills. \n4. Refer to the write-ups if you get stuck or want to understand the approach better.\n\n---\n\n## A Quick Heads-Up ⚠️\n\nThis repository is purely for **learning** and **practice**. It’s meant to help you sharpen your cybersecurity skills in a safe environment. Always remember: **don’t use these techniques outside CTFs or without proper authorization**. Play fair and stay ethical!\n\n---\n\u003cdiv align=\"center\"\u003e🛡️🤖 Happy Hacking, Fellas!🕵️‍♂️🔒 \u003c/div\u003e\n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpotreic%2Fwrite-up-tpw-ctf-2024","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fpotreic%2Fwrite-up-tpw-ctf-2024","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpotreic%2Fwrite-up-tpw-ctf-2024/lists"}