Lenam Blog

Hello, welcome to Lenam's personal blog. Here you will find information about CTFs, hacking, programming, artificial intelligence, and technology in general.

I hope you find this information helpful, just as the information others selflessly shared on the internet was helpful to me at the time.

Important Notice

The content presented on this website is intended solely for educational purposes, learning, and practice in pentesting and capture the flag (CTF) competitions. I am not responsible for the misuse of the information shared here.

Read the blog posts or check About for more info.

Featured

• WriteUp Latest Was A Lie - HackMyVM

  

  Published:Apr 15, 2026

  Write-up for the Latest Was A Lie machine (HackMyVM): a Linux lab with web services and Docker, where a supply-chain angle—replacing or tampering with the image the stack deploys—leads into host foothold and privilege escalation.

• TensorFlow.js: AI and machine learning models in the browser

  

  Published:Mar 18, 2026

  Create, train, evaluate and save a machine learning model directly in the browser with TensorFlow.js. Interactive tic-tac-toe demo with a local dataset, Web Workers and IndexedDB.

• WriteUp Shadow Blocks - Vulnyx

  

  Published:Mar 4, 2026

  Writeup of the Shadow Blocks machine (Vulnyx): iSCSI exploitation and disk data recovery to leak credentials, and unprotected NFS for privilege escalation.

• Transformers.js: language models and ML in the browser

  

  Published:Feb 25, 2026

  Run AI models directly in the browser with Transformers.js and Hugging Face. Interactive chat demo with an LLM using WebGPU (GPU) or WASM (CPU), no server, free and 100 % private.

Recent Posts

• WriteUp Ipeuveseis - TheHackersLabs

  Published:Feb 1, 2026

  Writeup for the "Ipeuveseis" challenge from The Hackers Labs, focused on attacking IPv6 services, container hopping and privilege escalation. Perfect for practicing pentesting techniques in containerized IPv6 environments.

• How to limit AI access to your content without disappearing from the web (Part 3 - More token reduction)

  Published:Jan 18, 2026

  How to adapt alternative content to reduce tokens using TOON and other techniques.

• How to limit AI access to your content without disappearing from the web (Part 2 - Technical strategies)

  Published:Jan 17, 2026

  Technical solutions to limit AI access to your web content.