LOLBin: printui.dll

Printer Settings User Interface is an executable file that contains functions used by the printer configuration dialog boxes. Functionality includes listing printer properties, adding new printers, installing printer via inf file, storing printer settings into a file and loading printer ...

Exploring Singapore's Vaccination Cert

Upon completing my COVID vaccination, I was pleasantly surprised to receive a digitally signed vaccination certificate. Based on my previous experience, I knew that getting a traditionally certified genuine chop stamp true copy of a certificate was not going to be cheap. A quick google search ...

SPF, DKIM, DMARC in a nutshell

I have just learnt something new about how SPF and DMARC interact with each other and the unexpected behaviour that might result from it. I find that most articles tend to cover SPF and DMARC separately and hence I will attempt to document the interaction in this article. Before we can proceed, ...

Infosec career progression

What are the technical requirements to progress in your career in cybersecurity? How do you move from an entry level analyst position into a senior analyst position? Starting from the defensive side of the house, an L1 SOC analyst usually starts with no experience in cybersecurity. The job role ...

Windows Trust Boundaries

Understanding Windows trust boundaries is important as a penetration tester as security vulnerabilities are usually found at these boundaries. As an application developer, understanding these boundaries will help you develop more secure applications. I have never found this information ...

0 reportable cybersecurity incidents

At first glance, achieving 0 reportable cybersecurity incidents seem to be a commendable achievement. Other industries set similar KPIs, i.e. 0 workplace injuries. However, we must understand that this is extremely tough because we are facing an active adversary that is attacking constantly. ...

LOLBin: fhmanagew.exe

File history is a backup solution built into Windows from Windows 8 onwards. Once enabled, previous versions of files in Documents, Music, Pictures, Videos, Desktop and OneDrive folder will automatically be copied onto a backup drive. The File History Management Tool (fhmanagew.exe) is a Living ...

Fun with MD5 Collisions

We all know about MD5 hash collisions but I have never imagined that so much progress has been made. Meaningful hash collisions can now be computed on desktop grade hardware. The below collision was computed using unicoll on an i3 desktop in under 30 minutes. Position of byte differences have ...