CTF WriteUps Train Mania

Train Mania

  • Category: OSINT
  • Difficulty: easy
  • Author: Quack

I recently stumpled upon this cool train! But I’d like to know a bit more about it… Can you please tell me the operating company, model number and its maximum service speed (km/h in regular traffic)?

The flag format is brunner{OPERATOR-MODELNUMBER-SERVICESPEED}. So if the operator you have found is DSB, the model number RB1, and the maximum service speed is 173 km/h, the flag would be brunner{DSB-RB1-173}.

Challenge Video:

TrainMania

Solution:

  1. Reverse image search the last second of the video (having the rear side of the train clear)
  2. Results showing a train of SJ X2
  3. Search of maximum service speed

screenshot1

Flag: brunner{SJ-X2-200}