# Page Not Found

The URL `files/1wJBmGVdGl7RNiEU7Qp0` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [Friend](https://gitbook-88.gitbook.io/ctf-writeup/friend.md)
- [网页读取器](https://gitbook-88.gitbook.io/ctf-writeup/2019/2019-hackergame/wang-ye-du-qu-qi.md)
- [simple_php](https://gitbook-88.gitbook.io/ctf-writeup/ba-chang/gong-fang-shi-jie/simple_php.md)
- [simple_js](https://gitbook-88.gitbook.io/ctf-writeup/ba-chang/gong-fang-shi-jie/simple_js.md)
- [[WEEK5]Give me your photo PLZ](https://gitbook-88.gitbook.io/ctf-writeup/2022/2022-newstarctf/week5-give-me-your-photo-plz.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://gitbook-88.gitbook.io/ctf-writeup/friend.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

### Option 2 — Browse the documentation index

Full index: https://gitbook-88.gitbook.io/ctf-writeup/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://gitbook-88.gitbook.io/ctf-writeup/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/ctf-writeup/friend.md`).

You may also use `Accept: text/markdown` header for content negotiation.