Techryptic's Blog

Technology Enthusiast, CTF Player, Vulnerability Research, Reverse Engineering, Pen-Testing, and other.

Using PTRACE to Inspect & Alter Memory

Using PTRACE to Inspect & Alter Memory. This is a fun project I worked on to use the ptrace functionality to inspect and alter memory (PEEKDATA/POKEDATA). Some general statements: I’ll be ...

IoT Pentest: Firmware Analysis on Network Camera

The IoT device that we’ll be reversing is the Axis M1034-W Network Camera. Without actually having the camera infront of me to tinker with, we’ll skip a few steps and move on to reversing the firm...

Linear Sweep x86 Disassembler

My Disassembler attempts to parse arbitrary binary input into x86 assembly code. Uses Linear Sweep algorithm to disassemble an arbitrary binary file: Only the following mnemonics are implement...

OSCP & PWK Review

This course exceeded my expectations. This we’ll be a very quick review for those looking to expand into pen-testing while going for the bad-ass of certifications. I am now studying for my SLAE...

Cyber Defense Competition: Writeup as Blue Team Leader

Hello all, here is my story of an amazing event that took place this past weekend. Preparation My team and I started as 6 members, in the end two members “left” and it was only four of us. We prac...

National Security Agency (NSA) Code Breaker 2016 Challenge Writeup

This was my first year I participated in the NSA Codebreaker Challenge, and I’m glad I took the ride. This year focused on reverse engineering and some modern vulnerability exploitations. They incl...

OCR-Engine-Playground

From my last Keybr.com project, I ran into a new website nitrotype.com which has different security mechanisms. Aside from using any Chrome Developer tools, I wanted to test out if I can build a sy...

Keybr - Multiplayer Cheater

I recently found out about the website Keybr.com, which is used to improve your typing speed. I’m averaging around 105 wpm, but there is room for improvements. Keybr introduces a fun way to improve...

Using RTL-SDR to Open Car Doors

Must note that using a jammer within USA is illegal. This post been changed to exclude any infomation on how to **successfully carry out the attack, it will show the bases used but will not go in-...

Project Aimbot: Device That Can Disrupt The Video Game Industry

Some background.. The society of which we live in today puts a great emphasis on the online world and those who are involved whether it be for bad or good. If you open any major newspaper there is...