Cobalt Strike 4.10: Through the BeaconGate
Cobalt Strike 4.10 is now available. This release introduces BeaconGate, the Postex Kit, and Sleepmask-VS. In addition, we have overhauled the Sleepmask API, refreshed the
Introducing the Mutator Kit: Creating Object File Monstrosities with Sleep Mask and LLVM
This is a joint blog written by William Burgess (@joehowwolf) and Henri Nurmi (@HenriNurmi). In our ‘Cobalt Strike and YARA: Can I Have Your Signature?’
Cobalt Strike and YARA: Can I Have Your Signature?
Over the past few years, there has been a massive proliferation of YARA signatures for Beacon. We know from conversations with our customers that this
Behind the Mask: Spoofing Call Stacks Dynamically with Timers
This blog introduces a PoC technique for spoofing call stacks using timers. Prior to our implant sleeping, we can queue up timers to overwrite its
Writing Beacon Object Files: Flexible, Stealthy, and Compatible
Our colleagues over at Core Security have been doing great things with Cobalt Strike, making use of it in their own engagements. They wrote up
Learn Pipe Fitting for all of your Offense Projects
Named pipes are a method of inter-process communication in Windows. They’re used primarily for local processes to communicate with eachother. They can also facilitate communication
Pushing back on userland hooks with Cobalt Strike
When I think about defense in the current era, I think of it as a game of instrumentation and telemetry. A well-instrumented endpoint provides a
Agent Deployed: Core Impact and Cobalt Strike Interoperability
Core Impact 20.3 has shipped this week. With this release, we’re revealing patterns for interoperability between Core Impact and Cobalt Strike. In this post, I’ll
A Red Teamer Plays with JARM
I spent a little time looking into Saleforce’s JARM tool released in November. JARM is an active tool to probe the TLS/SSL stack of a listening
Beacon Object File ADVENTURES: Some Zerologon, SMBGhost, and Situational Awareness
Cobalt Strike can use PowerShell, .NET, and Reflective DLLs for its post-exploitation features. This is the weaponization problem set. How to take things, developed outside