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Operating System Security Basics

Social media, a risky treasure trove of freely available information.

The Surface Dark Web

Analysis of RFID systems implemented in Indian metro stations

Radio Frequency Identification

hmmmmm.zip

Extract the crypto keys dir, the NGC dir, the user dir, security and system hives from file system and find the PIN

Windows PIN

We are right in front of the Admin Panel. Can you disable the mechanisms and take control of the Admin Panel?

Space pirate - Going Deeper

Feeling luuuuuuuucky? You must create a flag.txt in the same folder as the binary for it to run.

Gambler Overflow

Reversing challenge featured in HTB Cyber Apocalypse 2022. The interface is impossibly large. Can you unravel the storage system?

Omega One

Reversing challenge featured in HTB Cyber Apocalypse 2022. This machine has been running since long before you arrived. Can you hope to understand its workings?

Rebuilding

Reversing challenge featured in HTB Cyber Apocalypse 2022. Decompile the .pyc file

Snakecode

Reversing challenge featured in HTB Cyber Apocalypse 2022. You've been sent to a strange planet inhabited by a species that can teleport. Can you get the drop on them?

Teleport

Reversing challenge featured in HTB Cyber Apocalypse 2022. The entry for the dimension has been encrypted. Can you make it inside and take control?

WIDE

Reversing challenge featured in HTB Cyber Apocalypse 2022. Draeger's mothership has suddenly vanished, he could be readying an attack! You need to track him down before disaster strikes.

Without a Trace

A web challenge featured in DCTF 2022. I found this awesome site for learning SQL. Check it out!

SQL Tutor

A write-up on the reverse engineering challenge Keygenme featured in PicoCTF 2022

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Markdown Guide

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