Published | JUMPSEC LABS

TokenSmith – Bypassing Intune Compliant Device Conditional Access

by Sunny Chau | Dec 20, 2024 | Azure Cloud, burpsuite, Cloud Red Team, Initial Access, Red Teaming

Conditional Access Policies (CAPs) are the core of Entra ID’s perimeter defense for the vast majority of Enterprise Microsoft 365 (M365) and Azure environments. The core ideas of conditional access are: Require specific auth strength in scenarios where you wish to grant access Block access in undesirable scenarios If a scenario are neither covered by a or b, then the minimal auth strength (password) would be sufficient A special condition for CAP requirements is that authentication can be required to come from an “Intune Compliant” device (also known as “company managed” to the user), otherwise the authentication would be unsuccessful. In our adversarial engagements, more hardened M365 environments often have this requirement for a large subset of cloud apps used by the company, making running post-exploitation Entra ID tools like GraphRunner, RoadRecon, Teamfiltration, etc. difficult....

Building Forensic Expertise: A Two-Part Guide to Investigating a Malicious USB Device (Part 2)

In this part 2, we'll walk you through the step-by-step process of setting up and conducting a Digital Forensics and Incident Response (DFIR) investigation using a virtual...

Building Forensic Expertise: A Two-Part Guide to Investigating a Malicious USB Device (Part 1)

JUMPSEC believes heavily in learning and developing through real world experience. The incident described in this blog post presented a fantastic opportunity for 3 junior team...

No Logs? No Problem! Incident Response without Windows Event Logs

by editor | Nov 22, 2021 | Forensics, Incident Response, Windows

In this article, we discuss some Digital Forensics and Incident Response (DFIR) techniques you can leverage when you encounter an environment without Windows event logs.

PowerShell Jobs

by editor | Oct 7, 2021 | Detection, Incident Response, Monitoring, Windows

JUMPSEC investigators recently observed an adversary weaponising PowerShell Jobs to schedule their attack whilst responding to an incident. We discuss what PowerShell Jobs are, how they can be leveraged for malicious purposes, and how defenders can protect, detect, and respond to neutralise the threat.

Burp Suite and Beyond: Exploring non-HTTP protocols using MITM_RELAY

by editor | Aug 24, 2021 | Application Security, burpsuite, network, Network Tools, Research

In this article, Muhammet takes us on a deep technical journey to persevere beyond the limitations of the proxy tool Burpsuite, and explore non-HTTP, application-layer protocols using ‘MITM RELAY’.

Running Once, Running Twice, Pwned! Windows Registry Run Keys

by editor | Aug 11, 2021 | Detection, Incident Response, Monitoring, Windows

The Windows registry is a vast and complex topic and cannot be understood and defended in one article. One particular area of interest from a security perspective is registry run keys. In this article, we discuss who uses them, how to uncover abuse, and how to eradicate evil from them.

Can Depix deobfuscate your data?

by editor | Aug 3, 2021 | Jumpsec, Obfuscation, Password Cracking, Uncategorized

In this post, Caleb explores Depix and its potential to recover sensitive text from reports that were redacted by the original authors.

Car Hacking – Manual Bypass of Modern Rolling Code Implementations

by 0x5c4r3 | Jul 22, 2021 | Exploitation, Social Engineering

Introduction I recently researched modern algorithms used by keyfobs to open cars. Since most of the blogs online talking about the topic are unfortunately quite old and in general and do not precisely describe the exact path followed in detail, nor the code used. I thought that talking about my experience could be interesting and inspiring for other researchers. I won’t go in depth on certain...

Obfuscating C2 During a Red Team Engagement

by Patryk Zajdel | Jul 16, 2021 | Red Teaming

Command-and-Control (C2) infrastructure is one the most important tools in a red teamer’s arsenal. In this article, we introduce a few simple methods that red teams use to harden their C2 infrastructure.

PRINTNIGHTMARE NETWORK ANALYSIS

by editor | Jul 7, 2021 | Detection, Uncategorized

By Dray Agha The infosec community has been busy dissecting the PrintNightmare exploit. There are now variations of the exploit that can have various impacts on a target machine. When we at JUMPSEC saw that Lares had captured some network traffic of the PrintNightmare exploit in action, I wondered if there was an opportunity to gather network-level IoCs...

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JUMPSEC LABS

TokenSmith – Bypassing Intune Compliant Device Conditional Access

Building Forensic Expertise: A Two-Part Guide to Investigating a Malicious USB Device (Part 2)

Building Forensic Expertise: A Two-Part Guide to Investigating a Malicious USB Device (Part 1)

No Logs? No Problem! Incident Response without Windows Event Logs

PowerShell Jobs

Burp Suite and Beyond: Exploring non-HTTP protocols using MITM_RELAY

Running Once, Running Twice, Pwned! Windows Registry Run Keys

Can Depix deobfuscate your data?

Obfuscating C2 During a Red Team Engagement

PRINTNIGHTMARE NETWORK ANALYSIS

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