Ross Marks
  • Home
  • About
  • Portfolio
  • Git
  • Blog
  • Contact
  • Youtube
  • Twitch
  • Twitter
  • Linkedin

Post navigation

← Older posts

Curious Bolt CTF Level 1

Posted on May 13, 2025 by Ross Marks
Reply

This will contain spoilers for the Level 1 challenge board for use with the curious bolt. you have been warned. So firstly what is the “Level 1 Challenge Board”? It is a STM32 based set of 4 challenges to familiarize … Continue reading →

Posted in Electronics | Leave a reply

Critically Insecure Router

Posted on March 16, 2025 by Ross Marks
Reply

I wanted to create a hardware pentesting sample report so when clients ask for a sample report I’m not giving them a web app one and saying “It’s like this but different”. I knew a cheap router from china would … Continue reading →

Posted in Electronics, Security | Leave a reply

Side Channel Timing Attack

Posted on February 11, 2025 by Ross Marks
Reply

I decided to have a play with some side channel analysis attacks, What seemed like the easiest to attempt is a timing attack, so here is my findings. All the code for this is available at https://rossmarks.uk/git/0xRoM/Hardware in the “/SideChannel/ATtiny85_Timing_Attack” … Continue reading →

Posted in Electronics, Security, Tutorial | Leave a reply

Fault Injection – Crowbar Glitching

Posted on November 10, 2024 by Ross Marks
Reply
curious bolt

All the code for this is available here: https://rossmarks.uk/git/0xRoM/Hardware Fault injection is a technique in hardware penetration testing, used to assess and exploit vulnerabilities within physical devices by intentionally inducing errors or “faults” into a system. This enables us to understand … Continue reading →

Posted in Electronics | Leave a reply

FaultyCat Introduction

Posted on October 22, 2024 by Ross Marks
Reply
faultycat setup

At the most recent Defcon (32) along with too many badges I purchased a “FaultyCat”. A small EMFI injection device. It’s a remix of the “PicoEMP”. Basically you charge up some capacitors (under the red plastic in the below photo), … Continue reading →

Posted in Electronics | Leave a reply

Pacemaker Pwn Pt.1

Posted on October 10, 2024 by Ross Marks
Reply
base station

About the base station Before diving straight in and hacking a pacemaker we will start by attacking the base station. The pacemaker talks to the base station, this is a small box that is left beside the bed. At night, … Continue reading →

Posted in Electronics | Leave a reply

GL iNet 300M Fun (Pt.3)

Posted on January 31, 2024 by Ross Marks
Reply

I recently stumbled across these cute little boards on amazon and HAD to get some, without a project in mind. I quickly decided these would make an awesome little hardware backdoor/implant, and it just so happens I have a little … Continue reading →

Posted in Electronics, Tutorial | Leave a reply

AI Mail Tester

Posted on October 14, 2023 by Ross Marks
Reply

AI is a hot topic at the moment and I wanted an excuse to play with it and learn how to use OpenAI’s API. It is likely that email companies will be using AI to determine email legitimacy, and I … Continue reading →

Posted in Linux, Tutorial | Leave a reply

Permanent frida hacks

Posted on September 18, 2022 by Ross Marks
1

I’ve always wanted to make my frida scripts permanent in the applications I’ve hacked but always thought it was too difficult, well I recently revisited this idea and realized how easy it actually is. So here is a quick guide … Continue reading →

Posted in Android | Tagged android, apk, frida, objection | 1 Reply

Weekend Prototyping

Posted on January 19, 2021 by Ross Marks
Reply

This blog I’ll demonstrate how I made a prototype product in a weekend, the project “wakeup glasses” is a bit of a joke and a bit crap, but just a little bit of fun. The takeaway here isn’t the end … Continue reading →

Posted in Electronics | Leave a reply

Making a PCB at home

Posted on April 18, 2020 by Ross Marks
Reply

So to start with a small disclaimer, I have only ever made this one PCB, so I am no expert! Hopefully though this might give people an insight as to how it’s done and maybe encourage others to give it … Continue reading →

Posted in Electronics | Leave a reply

Breaking a smart lock

Posted on October 25, 2019 by Ross Marks
1

For this post we will be playing with the following: Once it arrived the first thing to do was to download the app (playstore link) connect the device, lock and unlock it a few times. It was fairly trivial and … Continue reading →

Posted in Bluetooth, Electronics, Security, Tutorial | 1 Reply

Reversing an ATtiny85

Posted on October 15, 2019 by Ross Marks
Reply

I wanted to give a quick demo on how to reverse engineer an ATtiny85 micro-controller to read the code stored on the device. For this demo the “hello world” is a small circuit with four buttons. By typing in the … Continue reading →

Posted in Electronics, Security, Tutorial | Leave a reply

Akord / Nexx Router fun

Posted on August 19, 2019 by Ross Marks
1
nexx_router

So again, I got a cheap and nasty router from Amazon: Firstly it came without instructions, but on the bottom it has it’s default IP and credentials: Going to the IP in a web browser your presented with the most … Continue reading →

Posted in Electronics, Security | 1 Reply

Post navigation

← Older posts

Subscription Options

Subscribe via RSSSubscribe via Twitter

Recent Comments

  • Decryptable on Permanent frida hacks
  • max johnson on Simple CAPTCHA issue
  • max johnson on Setting up an Iodine server
  • max johnson on Setting up an Iodine server
  • max johnson on Setting up an Iodine server

Top Posts

FridaLab
Permanent frida hacks
BLE CTF Walkthrough
Reversing an ATtiny85
FaultyCat Introduction
Pacemaker Pwn Pt.1
Critically Insecure Router
Vulnhub: Billu - b0x
Fault Injection - Crowbar Glitching
GL iNet 300M Fun (Pt.2)

Categories

Archives

Avatars by Sterling Adventures
 

Loading Comments...