Illness and inactivity

Over the last months, the amount of new blogs has unintentionally decreased. In March 2020, I became ill with the (then quite novel) Corona virus. The roughly two weeks that I was in bed, weren’t enjoyable. However, as most young and healthy persons, I recovered. Over time, more and more became known about the virus, … Read more

MalwareTheFlag’s HackFest 2020 challenges

On the 20th of November 2020, HackFest held its annual conference, which included a capture the flag event. Two challenges, both of which were featured in the classic CTF, were created by me. Both write-ups are given in this article, starting off with the challenge description, after which the observations based on the description are … Read more

Hatching Triage API client in Java

Hatching provides a sandbox named Triage. The sandbox is free for researchers, where each uploaded sample is made publicly available to others who visit the website. The API of Triage returns JSON values based on models that are outlined in the documentation. Using this documentation, I recreated their API endpoints into a Java library, which … Read more

A review of the Ghidra Book

This review covers No Starch Press’ Ghidra Book, which is written by Chris Eagle and Kara Nance. The book provides an extensive overview of Ghidra’s capabilities, including screenshots and examples. This review covers the whole book, where I summarised each chapter, together with my thoughts and experiences on the covered content. Within the conclusion, a … Read more

AndroidProjectCreator demo

Analysing an Android application, commonly referred to as an APK, can be done in a variety of ways. One can use APKTool to decode the application, thereby obtaining the manifest, the classes.dex, and the application’s resources. The classes.dex file can then be converted into a JAR using dex2jar, after which it can be decompiled. All … Read more