Category: write-up

For my last part about Cyber Security Challenge Belgium 2020, I’m writing a post about another fun challenge. The challenge was pretty simple, extract the flag from the .doc file. When receiving a file created by an Office product (Word, Excel, Powerpoint,…) the first thing that always comes to my mind is that these files […]

As my second part of this write-up series, I will cover two relative small challenges that appeared in the qualifiers round of this year’s Cyber Security Challenge Belgium. Compile Online The idea was simple: someone had made an online C compiler, which could be used by sending C code to the server using netcat and […]

This year marked our second year we participated in Cyber Security Challenge Belgium. Last year, my team got through qualifiers and were invited to Brussels for the semi-finals, where we ended a couple points short from entering the final. This year, we wanted to do better. During this year’s qualifiers, I was in Prague for […]