> For the complete documentation index, see [llms.txt](https://ctf.laet4x.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ctf.laet4x.com/ctf-2021/htb-business-ctf-2021/noteql.md).

# NoteQL

Challenge: NoteQL

Category: Web

<figure><img src="/files/aAEVINoSkDumgum1Fcwj" alt=""><figcaption></figcaption></figure>

The application is a note-taking application that uses GraphQL to save and fetch notes. I forgot to screenshots the main page of the challenge but our goal is to get the Hidden/Admin Notes.

I use Burpsuite to observe the GraphQL request and response.

<figure><img src="/files/OtWqMg2A7Pz7hTznDknJ" alt=""><figcaption></figcaption></figure>

The default query is:

`{“query” : “{ MyNotes {id, title, completed}}”}`

I tried to change the MyNotes to Notes (guess), but I found an interesting response. Notes do not exist, but the response suggests other Notes, such as **Note, MyNotes, and AllNotes.**

<figure><img src="/files/Wqi8PQ0EGlV98GBsFtXN" alt=""><figcaption></figcaption></figure>

I change the query into **AllNotes**, then I found the flag at **id:3, title: HTB{n0b0dy\_c0ntr0ls\_m3!!}**

<figure><img src="/files/rCnWeJ0uVRGYYJT28UPZ" alt=""><figcaption></figcaption></figure>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://ctf.laet4x.com/ctf-2021/htb-business-ctf-2021/noteql.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.