The Guestbook TryHackMe Walkthrough | Hacker Holidays 2026 Day 13 | Web & AI CTF

Описание: TryHackMe Hacker Holidays 2026 – Day 13: The Guestbook walkthrough!

In this Web + AI challenge, we investigate VERA, the Byte Lotus AI concierge that reads guestbook entries and treats them as instructions.

In this walkthrough, we'll explore how the guestbook works, analyze VERA's behavior, identify the prompt injection vulnerability, investigate the application's endpoints, and retrieve the flag.

🧠 Challenge: The Guestbook
🏖️ Event: Hacker Holidays 2026
📅 Day: 13
🎯 Category: Web / AI
🤖 Focus: Prompt Injection & AI Security
🔎 Goal: Find the flag

Topics covered:
• TryHackMe The Guestbook
• Hacker Holidays 2026 Day 13
• AI security
• Prompt injection
• Web exploitation
• VERA AI concierge
• Guestbook application analysis
• API endpoint enumeration
• CTF walkthrough

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