# open-docs (150)
## Problem
Yay! I really enjoy using these free and open file standards. I love them so much, that I made a file expressing how much I like using them. Let's enjoy open standards together!
(Attachments: files/open.docx)
## Solution
A lot of things are actually zip files underneath and can be unzipped as such. docx files are one of those things.
```$ unzip open.docx Archive:  open.docx   creating: docProps/  inflating: docProps/app.xml          inflating: docProps/core.xml          creating: word/  inflating: word/document2.xml        inflating: word/fontTable.xml       extracting: word/secrets.xml          inflating: word/settings.xml         inflating: word/styles.xml            creating: word/theme/  inflating: word/theme/theme1.xml     inflating: word/webSettings.xml       creating: word/_rels/  inflating: word/_rels/document2.xml.rels    inflating: [Content_Types].xml        creating: _rels/  inflating: _rels/.rels```
One can't help but notice a really interesting file: `word/secrets.xml`. Let's go check it out.
```$ cat word/secrets.xml 
PHNlY3JldCBmbGFnPSJiY2FjdGZ7ME94TWxfMXNfNG00ejFOZ30iIC8+```
Looks like base64. Let's decode it.
```$ echo "PHNlY3JldCBmbGFnPSJiY2FjdGZ7ME94TWxfMXNfNG00ejFOZ30iIC8+" | base64 -d<secret flag="bcactf{0OxMl_1s_4m4z1Ng}" />```