Blog

Bypassing Signature-Based AV

By Red Siege | August 25, 2021

If you want to execute arbitrary code on an endpoint during a penetration test, red team, or assumed breach, chances are you’ll have to evade some kind of antivirus solution. […]

SiegeCast: The Way of the Spray

By Red Siege | August 24, 2021

August 24th at 3pm Eastern. In a world where the security landscape is ever changing, weak passwords and an attackers ability to leverage that weakness is the gift that keeps […]

Now Streaming SiegeCasts!

By Red Siege | August 17, 2021

We are excited to bring you this brand new SiegeCast in a fresh new format!  On August 24th at 3pm Eastern the new SiegeCast from  Security Consultant Jason Downey will […]

Sans Core Netwars Tournament of Champions Europe

By Red Siege | August 9, 2021

From Justin Palk, Security Consultant: I’ll be honest, it feels good to win. Popping a shell sends a shiver down my spine. But getting into a duel with another team […]

Customizing C2Concealer – Part 2

By Red Siege | August 2, 2021

If you haven’t read Part I, we recommend starting there. If you’re ready for further C2Concealer customization, then let’s dive in.   The bulk of C2Concealer’s operations are done in […]

Customizing C2Concealer – Part 1

By Red Siege | July 12, 2021

About a year ago, we publicly released our C2 malleable profile generator for Cobalt Strike, C2Concealer. You can read the initial blog post here. In the GitHub Readme page and […]

Ordinal Values, Windows Functions, and C#

By Red Siege | June 8, 2021

There’s many different techniques that an offensive security professional could use to try to have their code avoid detection by various AV and EDR products. Various options include encrypting part […]

Hacking OAuth2.0

By Red Siege | March 22, 2021

The intent of this blog is to help penetration testers and security researchers get a deeper understanding of the OAuth protocol. We are going to learn how to bypass authentication […]

Networking Fundamentals Part I

By Red Siege | February 10, 2021

This blog is the first of three in a series to go over some basic networking fundamentals that every security professional should know. These blogs are geared towards the absolute […]

SiegeCast : Web Api Weaknesses

By Justin Connors | January 11, 2021