Intro Hi everyone! Oftentimes, when programming things that are supposed to be secure, we hear stuff about only using Cryptographically Secure PRNGs (CSPRNGs), and not just any old random-number ge...

Prelude Hi everyone! I’m writing these writeups as I’m participating in vsCTF2024, which is really cool so far! I haven’t solved all the challenges, but here are my writeups for the ones I solved. ...

Prelude Hello! Today, we are going to make a secure chat in Rust. “Secure” means that we don’t want attackers/eavesdroppers to be able to find out the contents of our messages (privacy), and we al...

Prelude Hello Everyone! This post is the first in a two-part series where we implement a WebApp that recognizes digits from scratch: In this part, we implement a Neural Network from scratch in R...

Intro Hi everyone! Today we’re going to analyze our first malware for Android! Android reversing presents with it a set of new challenges, and we will learn about the Android OS and Android Develop...

Prelude In the start of the year, I started keeping myself a list of technologies I don’t understand and want to learn about. The first candidate I immediately thought about was WebSockets. I kept ...

Prelude Today, we’re going to reverse engineer a real-world RAT (Remote Access Trojan) malware, and understand what it does exactly. This project will teach us a lot about common malware techniques...

Intro Hi! Today we’re going to solve a challenge from the awesome website pwnable.kr that has to do with file descriptors. Without further ado, let’s jump in. The Challenge So the challenge runs on...