We discovered a web portal used by COViD as a C2 platform to send messages to his ransomware victims. They have a script that accesses and hacks the websites posted back to the server! Can you stop...

Stack the Flags is a Cybersecurity Capture-the-Flag (CTF) competition organised by Singapore GovTech Cyber Security Group (CSG). It is a 50 Hour long CTF that span between 4-6 December 2020.

VSFTPD is a FTP server for UNIX like system. There will be slight difference in commands as well as file locations for different distributions. This tutorial will be covering centOS system as of c...

A domain Name System (DNS) server converts a domain name into an ip address. Berkeley Internet Name Domain (BIND) is the most popular software of the implementation of DNS server. It was developed...

A layer 3 switch is basically a switch with routing capabilities. It is able to route packets to another network which is very crucial amongst Virtual LANs (VLANs). Some layer 3 switch also have so...

Remote Authentication Dial-In User Service also known as RADIUS is a client-server networking protocol used for authentication in a network. It comprises of two component for it to work which is a...

Enowars Capture The Flag competiton is by a CTF-Team & Workgroup for Computer Security located in TU Berlin. It is a 2 man Attack / Defense CTF played online where teams will have to attack and...

On the initial connection, this binary does not prints out anything and just waits for an input. Luckily, the binary was compiled with debugging symbols. This will make reversing much simpler.

This challenge was very weird. Since it was a binary we could download and we were suppose to extract the flag from it, I decided to do use GDB to retrieve the flag.

This challenge requires us to run a PE file. It will start a timer and when it reaches a specific time, it will print the flag.