---
# System prepended metadata

title: 'picoCTF: extensions'
tags: [picoCTF]

---

1. `file` it
```shell
┌──(kali㉿kali)-[~/code]
└─$ file flag.txt
flag.txt: PNG image data, 1697 x 608, 8-bit/color RGB, non-interlaced
                                
```
2. how about `strings`?
```shell
┌──(kali㉿kali)-[~/code]
└─$ strings flag.txt | grep "pico"
                                      
```
...still not working
3. change the file name from `.txt` to `png`
![](https://hackmd.io/_uploads/H19d8Jtjh.png)
TADA!