Amidst Us

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

Description

The Amidst-Us tribe is a notorious group of sleeper agents for hire. We have plausible reasons to believe they are working with Draeger, so we have to take action to uncover their identities. Ulysses and bonnie have infiltrated their HQ and came across this mysterious portal on one of the unlocked computers. Can you hack into it despite the low visibility and get them access?

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. Hmm.. Try use Burp Suite to see if we can any unique request.

3. When i pressed this one:

4. We can upload a file.

5. Hence let us get catch that request.

Flag

(no flag captured)

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.