jakewnuk.com

Journals across the journey in offensive security and reverse engineering.

Recent

  • Sep 2026

    Community and Hash Cracking

    I find studying systems to be interesting, which naturally leads me to doing security work. Lately, I have been reflecting and found the human part of …

  • Jun 2026

    The Digital Context Gap

    In this post, I want to talk more about the applications and use cases for non-deterministic application workflows using predictive models like LLMs. As the …

  • May 2026

    The Internet Is Not Real

    This is an opinion piece on some of my personal frustrations and disinterest in giant media platforms, especially as the prevalence of anti-human technology …

  • Mar 2026

    Making the Hashcracky Hashcat Rules

    In this post, I am going to go over a few high-level methodologies used to create all the rules on Hashcracky.com. I started making my own rule sets several …

  • Jul 2025

    Installing Proxmox with GPU Passthrough

    In this short post we will be going over setting up a Proxmox Virtual Environment (VE) with GPU passthrough in an infrastructure/home lab experiment. Proxmox VE …

  • Jul 2025

    How Much Power Does My GPU Need

    A component of hash cracking is the reliance on hardware to perform calculations needed for successful recovery. This often means getting access to or …

  • Jan 2025

    Security Engineering and Threat Modeling Jabbercracky

    Recently, I have been working on Jabbercracky (now Hashcracky), a free hash cracking Capture The Flag (CTF) website. Development started in November, with the …

  • Oct 2024

    No Cap Cracking: Hash Cracking Training

    No Cap Cracking: Improving Offline Hash Recovery Methodologies At Security BSides Cayman Islands 2024, I presented a training for hash cracking based around my …

  • Sep 2024

    Creating Local GPU Compute

    In 2024, I wrote a blog post about my experience creating a multi-GPU home server for a home security lab. Now, I want to revisit the post a bit to give an idea …

  • Sep 2024

    Punching Passphrases

    One interesting target in hash cracking is passphrases. These are unique because they are not best sourced from other found material, like other passwords, but …

  • Jul 2024

    Raspberry Pi K3s Cluster

    We are going to make a Raspberry Pi cluster that can be used as a distributed computing lab and host high-availability services using Kubernetes and K3s …

  • Jun 2024

    You Are Not Stupid

    Everyone has said it at some point: “I’m so stupid.” It’s a natural thing to do. At some level, we all want to improve, but we rarely think about the …

  • Jun 2024

    Why Raw HIBP is Not Ideal

    “Have I Been Pwned” or HIBP is a well-known resource when it comes to breached credential security. The service offers a powerful lookup API to identify if an …

  • Jun 2024

    Weight Lifting

    I want to take a side-step from technical writing and talk about my experience with something that has influenced my life, but I rarely discuss, which is …

  • Jul 2023

    Modern Hashing Implementation

    Ensuring that the base hashing algorithm is of sufficient strength and that users are setting strong passwords can greatly improve the security of a system. …

  • Jul 2023

    The Association Attack Mode

    In this post, I would like to explore some attack modes for Hashcat and how they can make a dramatic difference in recovery efforts against modern algorithms …

  • Jan 2023

    Concept of Token Swapping Attacks

    There are many ways to crack passwords, and offensive tooling for password security has provided a lot of new and exciting attack methods to reveal plaintext. …

  • Jan 2023

    Optimizing Wordlists with Masks

    To crack hashes, practitioners use large word lists containing likely password candidates. They are used with different attack types, such as rules, to recover …

About

Focus

Offensive security across products, applications, networks, and infrastructure.

Interests

AppSec, secure engineering, reverse engineering, cryptographic hash recovery, objective-based security.

Notable

Talks

Always act with kindness.