Open Mikrotik Backup File Repack

python3 /tools/backup_pack.py --store /tmp/modified_store --output "$OUTPUT_BACKUP"

echo "Repacked backup saved as $OUTPUT_BACKUP"

MikroTik RouterOS (v6, v7) uses AES‑256‑CBC with a key derived from: open mikrotik backup file repack

If you have access to the original RouterOS device (console/SSH), you can try:

/system backup save encryption=aes-sha256 password=YourPassword

But even then, the .backup is not directly decryptable by standard tools because the key is not just the password — it also includes a nonce/device secret. python3 /tools/backup_pack

Practical approach:
Instead of reversing encryption, use export:

/export file=config

This yields a plain .rsc script file you can edit and then re‑import. MikroTik RouterOS (v6, v7) uses AES‑256‑CBC with a

If you truly need to “repack” a .backup file, you’re essentially forging a valid checksum/encryption — which requires the original device’s internal secrets.

binwalk -e backup.backup   # split into detected parts

If you’re lucky, you’ll get a decompressible blob (rare without decryption).