[CTF] WU - Digital Survey

Difficulty Level : Easy

Challenge Category : OSINT

Description :

D’un souffle discret, je fais danser les machines, Dans un ballet mortel, je dérègle leurs turbines. J’opère loin des regards, en silence, dans l’ombre, Mon voyage est précis, et mes cibles s’effondrent. Mais l'œil d'un maître a percé mon déguisement, Dévoilant mes rouages, mon dessein menaçant. Cherche l'esprit qui m'a mis à nu, Et murmure mon nom pour résoudre l'inconnu.
format: FLAG{Firstname_Name_Program-name}

Solution Steps

Step 1: Analyze the Riddle

The riddle provides key clues:

1. Silent Operator:
   • The entity works discreetly, targeting machines and causing destruction.
2. Precise and Targeted:
   • The disruption is deliberate, impacting turbines and industrial systems.
3. Unmasked by a Master:
   • The actor was eventually exposed by a renowned individual.

Step 2: Research the Clues

Based on the description, the riddle references Stuxnet, a sophisticated piece of malware:

• Stuxnet:
  • A computer worm designed to sabotage industrial systems, specifically targeting Iranian nuclear centrifuges.
  • Operated silently and precisely to disrupt specific systems.
  • Caused physical damage to hardware (e.g., turbines).
• Ralph Langner:
  • A cybersecurity expert who uncovered Stuxnet's purpose and operation.

Step 3: Construct the Flag

From the research:

• Firstname: Ralph
• Lastname: Langner
• Malware Name: Stuxnet

Final Flag:

FLAG{Ralph_Langner_Stuxnet}