# misc/chest-mix> Here's a minecraft world, the flag is on a piece of paper in the the chest by spawn, it's hard to miss. Version 1.20
We are given Minecraft world save file, look for ways to parse this. I found a chunk extractor script that can extract contents from a region save. From there we can grep each region for any minecraft chunk/block we want.
https://github.com/sudofox/minecraft-utils/blob/master/region-parser/region-parser.sh
```bash# unzip the save file and under regions run the script for each .mca file./region-parser.sh r.0.-1.mca ./region-parser.sh r.0.0.mca # ... 
# after unpacking all we can check each content if it contains chest / paperfind . -name "*.nbt" -exec grep minecraft:chest {} \;find . -name "*.nbt" -exec grep minecraft:paper {} \;
# we can just search for the flag find . -name "*.nbt" -exec grep -a bctf {} \;
```![chest-mix](https://xeunwa.github.io/b01lers-2024/image-2.png)
**flag**: bctf{ch1st_ch2st_ch3st_ch4st_ch5st}