Full Stack Conf

Platform: HackTheBox | Category: Web | Difficulty: N/A | Author: D3v0o0Nu11 | Date: 2026-02-10

Description

Welcome to Full Stack Conf, explore the future of JavaScript with a lineup of industry professionals and discover new techniques to advance your career as a web developer. But be very careful with the stay up to date form, we don't sanitize anything and the admin logs in and checks the emails regularly, don't try anything funny!! 😅

Solution Approach

Core idea: Identify the weakness from source review or fingerprinting first. Iterate with incremental payloads instead of guessing.

Steps

1. First, open the host given.

2. Found something interesting down here.

3. Use alert().

<script>alert('1')</script>

1. Got the flag!

Flag

REDACTED

Lessons Learned

1. Identify the weakness from source review or fingerprinting first.
2. Iterate with incremental payloads instead of guessing.
3. Reuse the same pattern in future engagements.