OverTheWire – Narnia 4

OverTheWire – Narnia 4

Welcome back! In the last level, we covered narnia3, which was a good play with buffer overflows and file permissions. Now that we’ve successfully owned narnia3, let’s move on to narnia4. Introduction /* This program is free software; you can redistribute it and/or...
OverTheWire – Narnia 4

OverTheWire – Narnia 3

Welcome back! Now that we’ve conquered Level 2 and gained the password for Level 3 it’s time to keep pressing. Introduction Same thing from before. Log into the lab server as Narnia3 and look at the source code for narnia3.c. /* This program is free...
OverTheWire – Narnia 4

OverTheWire – Narnia 2

Introduction In the previous write up the environment variable was set to the exploit payload granting an escalated shell. This challenge is different however, it will be building upon the theme of binary analysis. Getting Started Once logged into the Narnia server as...
OverTheWire – Narnia 4

OverTheWire – Narnia 1

Introduction Narnia a series of reverse engineering puzzles developed by OverTheWire and is an introduction to reverse engineering. Below is the methodology used to solve these puzzles. Login and Execution In the previous level, Narnia 0, we covered the difference...
Hacking our first MIFAR/RFID Tag

Hacking our first MIFAR/RFID Tag

Easy tutorial about hacking our first MIFAR/RFID Tag. RFID is a technology widely used in our lives, from our building access badges, to payment facilities, or even our gates’ remotes. As we’ve seen in the previous post here, some of them are utilizing little to no...