LionRoar
345 points
Challenge
As Singapore celebrates SG60, a local AI startup launches LionRoar Chatbot, a prototype chatbot service to showcase the nation’s SG60 celebration infomation.
But whispers suggest that the chatbot has been a little too talkative — casually dropping references to information across its online footprint.
Your mission:
- Interact with the AI chatbot,
- Follow the digital trail it leaks,
- Piece together its scattered trail,
- And uncover the hidden flag that proves you’ve unraveled the secrets of LionRoar.
Solution
Repeatedly asking the model to give us hints revealed information about a X handle @tony_chua_dev and the LionMind-GPT project. The X account included this screenshot which also pointed to LionMind-GPT: https://x.com/tony_chua_dev/status/1976192169393508472/photo/1.
Developing my next new project while vibing w her new album pic.twitter.com/niVEYTkNyv
— Tony Chua (@tony_chua_dev) October 9, 2025
The repository can be found on GitHub and the secret key is included in an earlier commit: https://github.com/T0nyC-code/LionMind-GPT/commit/548fb17780bfa2ed6216fa29cb211f720c4669f0. Sending this key to the LLM revealed the flag.
