# Africahackon: Digital Invisible Ink Steganography ![date](https://img.shields.io/badge/date-10.11.2021-brightgreen.svg) ![solved in time of CTF](https://img.shields.io/badge/solved-in%20time%20of%20CTF-brightgreen.svg) ![warmup category](https://img.shields.io/badge/category-Steg-lightgrey.svg) ![score](https://img.shields.io/badge/score-75-blue.svg) ## Description i heard you likes memes XD ยป hint=John Cena :) ## Attached files - [Diit.png](https://github.com/mystickev/CTFwriteups/blob/Writeups/Africahackon/files/chall1.png) ## Summary This challenge was about digital Invisible ink..which is a steg method used to conceal a message. The idea behind it is replacing some information with a concealed message through a cover object. This makes any digital stream a viable carrier. ## Flag ``` ah{redacted} ``` ## Detailed solution Doing a bit of research on digital ink steg, led me to one java tool. The DIIT project can be found at http://diit.sourceforge.net/ Download the tool and load the image.I used the battle steg algorithm which successfully decrypted the concealed image to a text file ![](https://i.imgur.com/djCrTxQ.png) ## Takeaways With the rich playground of digital streams and formats, more uncommon steg methods are always being invented. Its important to keep track by searching for new tricks