Decrypt Unifi .unf backups

decrypt-howto.md

NB: these instructions are for Ubuntu; they work under WSL on Windows 10 as well

Get the decrypt.sh file from here: https://github.com/zhangyoufu/unifi-backup-decrypt

Make sure prerequisites are installed:

sudo apt update && sudo apt install zip unzip openssl mongo-tools

Then put your .unf backup file somewhere convenient (for our example, we'll assume it's in the home directory and named backup.unf):

bash decrypt.sh ~/backup.unf ~/backup.zip
mkdir backup
cd backup
unzip ~/backup.zip
gunzip db.zip
bsondump db.zip > db.json

This will:

1. convert the .unf into an unencrypted .zip file,
2. unzip that into the backup directory,
3. uncompress the backup database
4. convert the backup databse from "binary JSON" (bson) to plain text JSON

You can then see the contents of the backup database with any JSON-aware tool or simply read it in a text editor.