Using CloudFront to Relay Cobalt Strike Traffic
Brian Fehrman // Many of you have likely heard of Domain Fronting. Domain Fronting is a technique that can allow your C2 traffic to blend in with a target’s traffic […]
Brian Fehrman
PSA: It’s 10PM, Do You Know Where Your Lync Servers Are?
Brian Fehrman// Microsoft Lync servers have been a staple of my external engagements for the past six months or so. I have found a Lync server on all of those […]
PowerShell w/o PowerShell Simplified
Brian Fehrman // In a previous post, titled PowerShell without PowerShell, we showed you how you can bypass Application Whitelisting Software (AWS), PowerShell restrictions/monitoring, and Command Prompt restrictions. In some […]
Digging Deeper into Vulnerable Windows Services
Brian Fehrman // Privilege escalation is a common goal for threat actors after they have compromised a system. Having elevated permissions can allow for tasks such as: extracting local password-hashes, […]
The CredDefense Toolkit
Derek Banks, Beau Bullock, & Brian Fehrman // Our clients often ask how they could have detected and prevented the post-exploitation activities we used in their environment to gain elevated […]
WEBCAST: A Powerful New Tool – PowerLine!
Brian Fehrman // Running into environments where the use of PowerShell is being monitored or is just flat-out disabled? Have you tried out the fantastic PowerOps framework but are wishing […]
How to Use Nmap with Meterpreter
Brian Fehrman // You’ve sent your phishing ruse, the target has run the Meterpreter payload, and you have shell on their system. Now what? If you follow our blogs, you […]
How to Bypass Web-Proxy Filtering
Brian Fehrman // Someone recently posed a question to BHIS about creating C2 channels in environments where heavily restrictive egress filtering is being utilized. Testers at BHIS, and in the […]
Power Posing with PowerOPS
Brian Fehrman // As described in my last blog post, Powershell Without Powershell – How To Bypass Application Whitelisting, Environment Restrictions & AV (sheeesh…it’s been a bit!), we are seeing more environments in […]
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