Here’s a running list of CTF-related websites. They are helpful resources for solving and writing challenges!
Wireshark Cheat Sheet and Tips: Wireshark Cheat Sheet
Nmap Cheat Sheet and Tips: Nmap Cheat Sheet
Visual Representation of a Baudot Code: Baudot Code Generator
The colors are irrelevant. Each column stands for a specific letter. Coldplay used this similar representation for their X&Y album cover.
The Culper Code Book: Culper Code Book
George Washington used coded messaging in the Revolutionary War! The Mount Vernon website includes historical information and a codebook you can use to create or decipher your own messages.
Cryptii Link: cryptii.com
Cryptii is a web app offering modular conversion, encoding, and encryption online
Other Educational links, tools, and software provided by the ACA: www.cryptogram.org/resource-area/
CTF writeup focused on SQL injection challenges: SQL Challenges
Steganography Online Tools: Steganography Online Tools | They Live Steganography
If you don’t want to mess with command line tools like StegHide, try out some of these online steganography tools to decode images.
Open Source Intelligence Tools/Resources: osintframework.com
What3Words: What3Words Link
Mapping app that assigns every 3-meter square a unique combination of three words.
John the Ripper Tutorials: John the Ripper Tutorial
Explainer on how passwords are stored in Linux: Slash Root
Linux Education Resources : Linux | Greek University
Windows Commands Cheat Sheet: Windows Commands Cheat Sheet
General Cybersecurity: asecuritysite.com
This site contains a number of materials related to security, digital forensics, networking, and more.
CTF Blog: CTF Blog
Blog of CTF tutorials, videos and challenge ideas provided by non-profit focused on helping vets enter careers in cybersecurity
Creating and Solving CTF: CTF Resource
Curated list of resources for creating and solving CTF challenges
CTF Events, Write-ups, Guides: CTF Events
Github repo including links to CTFs by challenge category + getting started resources + CTF write-ups: CTF Practice
Regex101: Regular Expression Tester: Regex.com
CyberChef: CyberChef
A simple, intuitive web app for analyzing and decoding data without having to deal with complex tools or programming languages.
L33t Speak Converter: Creating CTF Flags
Overview of Purple Teaming from Scythe: Purple Team PDF