Wouter Jehee

Cybersecurity Engineer

I'm a cybersecurity engineer based in the Netherlands.

I hack (both the making and breaking kind) on devices in strange environments.

If you want to contact me, please send me an email.

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Github

Keyoxide

Bluesky

RSS

Blot

Blot is a platform for organizing different types of games involving maps. Currently, the following game modes are in development:

Royale: a battle royale style game where players have to visit locations to score points and collect powerups that can help them against their opponents.
Route: follow a route of points, but the only information given is your current distance to the next point.
Pin: an online quiz where the answer to the questions is a location on a map (inspired by IScout).

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Fuzzing

For my master thesis I worked on fuzzing several libraries used on a small satellites (known as cubesats), the main one being the Cubesat Space Protocol (CSP). For this use case I translated the code for the firmware to run in a simulator making it much faster to iterate on.

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Packet

AFL++

Target

DNS amplification

In this group project we investigated the amplification potention of the Dutch government's DNS infrastructure. The amplification potential was the most severe using DNS any requests. We implemented and demonstrated a DoS attack using the worst offending domains and DNS servers. Some examples of the worst offenders can be seen in the graph.

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