Yubikey passwordless Windows local account login

Yubico used to publish a Windows Store application YubiKey for Windows Hello that allowed local non-domain joined accounts to login to Windows simply by inserting the YubiKey. However, that application has since been retired and there is no current method to perform a password login for a local ...

Converting WinExec shellcode

I have found an interesting method to convert WinExec shellcode. This may be useful if WinExec cannot be used because the characters WinE are bad characters or if there are security solutions monitoring for its execution. This method requires msvcrt.dll to be loaded as it uses the system call ...

Digital NRIC Spoofing

Pretty interesting how easy it is to spoof the animated hologram thingy in the new Digital NRIC. Managed to build a Proof of Concept (POC) within a few hours of the news release. Govtech's response is as follow: Hi Benjamin, We refer your report submitted under the Vulnerability Disclosure ...

Industry Consultation on Licensing for CSPs

Below feedback was submitted to CSA on 11 Oct 2021 in an individual capacity. Q1 I refer to item 7 on page 6 of Annex A: Industry Consultation Document, reproduced below. If a company registered in Singapore or an individual residing and working in Singapore is only providing cybersecurity ...

Police and private sector forensics differences

Due to the nature of work, there is a vast difference between the skillset of a law enforcement cyber forensics analyst and his private sector counterpart. If you are intending to hire an ex-law enforcement analyst, do read on to find out if it is a good fit. Law enforcement forensics analysts ...

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, ...