-
(Forensics - CCCampCTF 2023) live-forensics
TL;DR: Analysis of a dropper Linux malware. Description: We have detected suspicious network traffic originating from one of our servers. Could you assist us in investigating this? Hopefully, we won’t become the next victim of the Iron Oxide Infiltrators! Introduction We are given SSH access, with root permissions, to a...
-
(Reverse - imaginaryCTF 2023) Sheepish
TL;DR: Obfuscated Python code using lambda-calculus. Description: Mary had a flagchecker, its fleece was white as snow. Introduction We are given a Python script, consisting in a single line of ~26k characters, with lots of lambda-functions. The full script is available here , see the beginning and the end of...
-
(Reverse - Grey Cat The Flag 2023 Quals) Crackme1
TL;DR: A challenge with obfuscated JavaScript, with some WebGL shaders to reverse. Description: When the correct key is entered, you will see a nice image. When we open the webpage, we can first inspect the HTML code. <body> <canvas id="c"></canvas> <div class="input-container"> <input id="textInput" type="text" placeholder="Enter Key"> <button id="submitButton" class="submit-button">Submit</button>...