> For the complete documentation index, see [llms.txt](https://pwnsec-notes.gitbook.io/ctf-notes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://pwnsec-notes.gitbook.io/ctf-notes/appsec.md).

# AppSec

## Unicode Normalization

* <https://www.w3schools.com/tags/ref_urlencode.ASP>

```
# u+FE30
︰/︰/︰/︰/︰/︰/︰/etc/passwd
```

### Hash collisions

* <https://github.com/spaze/hashes>

## CheatSheets

* <https://github.com/w181496/Web-CTF-Cheatsheet>