Man-in-the-Browser Session Hijacking
Malware like Zeus and its variants inject themselves into a user’s browser to steal banking information. This is a man-in-the-browser attack. So-called, because the attacker
Why do I always use 32-bit payloads?
Yesterday, one of my customers asked about x64 payloads in Cobalt Strike. Specifically, he wanted to know why Cobalt Strike doesn’t expose them. I’ve already
Stealthy Peer-to-peer C&C over SMB pipes
Beacon is my payload for low and slow control of a compromised system. Recently, I added peer-to-peer communication to Beacon. When two Beacons are linked,
Cobalt Strike 1.48 – Peer-to-peer C&C
I’m pleased to announce Cobalt Strike 1.48. This release introduces a peer-to-peer data channel for Beacon, improves browser pivoting, and updates the signed applet attack with
Browser Pivoting (Get past two-factor auth)
Several months ago, I was asked if I had a way to get past two-factor authentication on web applications. Criminals do it, but penetration testers
Beacon – An Operator’s Guide
Beacon is a payload in Cobalt Strike that has a lot of communication flexibility. This blog post is not a replacement for the documentation, but rather
Armitage and Cobalt Strike 1.47 Released
Armitage and Cobalt Strike 1.47 are now available. This release improves many aspects of the workflow in both Armitage and Cobalt Strike. Here are some
Hacking through a Straw (Pivoting over DNS)
Last month, I announced Beacon’s ability to control a host over DNS. I see Beacon as a low and slow lifeline to get an active session,
That’ll never work–we don’t allow port 53 out
One of my favorite Cobalt Strike features is its ability to quietly manage a compromised system with DNS. Being rather proud of this feature, I
DNS Command and Control Added to Cobalt Strike
Many networks are like sieves. A reverse TCP payload or an HTTP/S connection is all it takes to get out. Once in a while, you