tr -cd '\11\12\15\40-\176' (on Linux) to strip non-ASCII.If you are a Managed Service Provider handling dozens of MikroTik devices, manual extraction is a nightmare. You need a scripted workflow.
The Bash/Expect Script Approach: Create a script that logs into a sacrificial CHR, SCPs the backup file over, restores it, exports it, and SCPs the text file back.
Pseudo-code logic:
#!/bin/bash # Usage: ./extractor.sh file.backup architecture (arm/mips/x86)
scp $file.backup admin@chr-vm:/ ssh admin@chr-vm "/system backup load name=$file.backup" sleep 5 ssh admin@chr-vm "/export file=extracted_config" scp admin@chr-vm:/extracted_config.rsc ./$file.rsc echo "Extraction complete. Check ./$file.rsc"
This is as close to a "MikroTik Backup Extractor" as you will get in a professional environment.
When a user issues the command /system backup save in RouterOS, the resulting file is not human-readable. If the user specifies a password during the backup process, the file is encrypted using that password. Without the correct tools, this file is a "black box"—impossible to audit or modify without restoring it to physical hardware.
zlib.decompress(decrypted).#!/usr/bin/env python3 import sys, zlib, json from Crypto.Cipher import AES from Crypto.Protocol.KDF import PBKDF2def extract_backup(filepath, password=None): with open(filepath, 'rb') as f: data = f.read()
# 1. Check magic if data[0:2] != b'\xeb\x31': raise ValueError("Not a valid MikroTik backup") # 2. Decrypt if needed if data[2] & 0x01: # encrypted flag if not password: raise ValueError("Encrypted backup needs password") salt = data[4:20] iv = data[20:36] key = PBKDF2(password, salt, dkLen=16, count=1000) cipher = AES.new(key, AES.MODE_CBC, iv) decrypted = cipher.decrypt(data[36:-4]) else: decrypted = data[36:-4] # 3. Decompress try: decompressed = zlib.decompress(decrypted) except: decompressed = decrypted # assume plain # 4. Parse TLV (simplified) config = parse_tlv(decompressed) # 5. Output return config
if name == 'main': # CLI argument handling here cfg = extract_backup(sys.argv[1], sys.argv[2] if len(sys.argv)>2 else None) print(json.dumps(cfg, indent=2))
There is no single official tool called "MikroTik Backup Extractor," but the concept is powerful.
strings method.Final Pro Tip: Stop relying solely on .backup files. Always maintain a parallel /export hide-sensitive plain-text backup stored in a Git repository. The .backup file is excellent for fast disaster recovery, but the .rsc file is your true lifeline for inspection, migration, and auditing.
The MikroTik Backup Extractor gives you the power to unlock your data when the router is gone. Use it wisely, keep your passwords safe, and always test your backups.
Have you successfully extracted a MikroTik backup? Share your experience in the comments below. If you need help with a specific corrupted backup file, describe the issue in detail, and the community may help. mikrotik backup extractor
The Role and Utility of MikroTik Backup Extractors The .backup file produced by MikroTik RouterOS is a binary, often encrypted file designed for full system restoration on the same hardware. Because these files are not human-readable, administrators frequently turn to MikroTik backup extractors—third-party tools designed to decrypt and unpack these binary blobs into readable configuration data. Understanding MikroTik Backup Files
To understand why extractors are necessary, one must distinguish between the two primary backup methods in RouterOS:
Export (.rsc): A plain-text script containing configuration commands. It is human-readable and can be opened in any text editor.
Backup (.backup): A binary snapshot of the entire system state, including sensitive data like MAC addresses and certificates. This format is proprietary and cannot be read without specific extraction tools. Core Functionality of Extractor Tools
Extractors bridge the gap for administrators who have lost access to their router or need to recover specific settings from a binary file without a spare MikroTik device. Key features of prominent tools like the BigNerd95 RouterOS-Backup-Tools include:
Decryption: Converting encrypted backups into plaintext using the original backup password.
Unpacking: Extracting internal .idx and .dat files that contain specific configuration blocks.
Password Recovery: Some tools can extract user credentials from older RouterOS versions (v6.45.1 and earlier) or attempt to brute-force encrypted backups.
Modification: Advanced tools allow users to "pack" a modified configuration back into a .backup format, though this is risky and generally discouraged. Security and Practical Implications
While powerful, the use of backup extractors carries significant risks:
Security Vulnerabilities: Backup files contain highly sensitive data. Using online or unverified third-party extractors can expose your network's credentials and topology to attackers.
Hard-Coded Identifiers: Because .backup files include device-specific info like MAC addresses, extracting and applying parts of them to different hardware can lead to "partially broken" configurations.
Encryption Limits: Modern RouterOS versions (v6.43+) use AES128-CTR encryption. If the backup was properly password-protected, it remains nearly impossible to extract without that password unless a significant vulnerability is exploited. Recommended Alternatives The Ultimate Guide to the MikroTik Backup Extractor:
Experts on the MikroTik Forum and Reddit consistently recommend using Export (.rsc) files for daily documentation and configuration management. Exports are naturally human-readable, version-control friendly, and easily modified for deployment on different hardware models. rsc export to avoid needing an extractor in the future? Difference between backup and export-how to monitor changes
Understanding MikroTik Backup Extraction A MikroTik backup is a binary file (ending in .backup) designed specifically for restoring the configuration of a device to the exact state it was in when the backup was made. Because these files are binary and often encrypted, they cannot be opened and read like standard text files. Why Extract a Backup? Users typically need a "backup extractor" when:
Hardware Failure: The original router is broken, and they need to see the configuration to apply it to a different model.
Credential Recovery: Forgotten passwords or lost user databases.
Auditing: Reviewing specific firewall rules or scripts without restoring them to live hardware. Methods for Extracting Data 1. The Official Workaround (Safe but Slow)
MikroTik does not provide a native standalone "extractor" tool. The standard way to see what is inside a binary backup is to restore it to a spare device (or a MikroTik CHR virtual machine) and then use the /export command to generate a human-readable text file. 2. Third-Party Extraction Tools
Several community-developed tools can decrypt and unpack the .backup format. These are often used for advanced recovery:
RouterOS-Backup-Tools: A popular set of scripts available on GitHub that can decrypt encrypted backups, unpack the internal .dat and .idx files, and even reset passwords by modifying the backup file before restoring.
Extract Users Script: Part of the same toolset, this specifically targets user.dat to recover local user accounts and passwords. Comparison: Backup vs. Export Mastering MikroTik Backups - Free MTCNA Ep.9
Here’s a draft blog post for a tool or script that extracts and decrypts MikroTik RouterOS backup files.
Title: How to Extract and Decrypt MikroTik Backups (Without a Router)
Intro
MikroTik RouterOS backups (.backup) are encrypted binary files. You normally need a RouterOS device to restore or view them. But what if you just want to inspect a backup, recover a forgotten password, or audit a config without booting a router?
Enter the MikroTik Backup Extractor – a tool that lets you decrypt and extract the readable configuration from a .backup file offline. Cause: The extractor did not properly handle binary tokens
What You’ll Need
backup.backup)Step-by-Step Guide
Get the script
Download it from GitHub:
git clone https://github.com/ysard/mikrotik-backup-decoder
(or use the Python script directly)
Install dependencies
pip install pycryptodome
Run the extractor
python mikrotik_decoder.py backup.backup
Output
The tool will create a plain text file – typically the router’s conf.rsc – with all commands: interfaces, IPs, firewall rules, users, etc.
Example Use Case: Recovering a Lost Password
If you have an old backup but forgot the router’s admin password, extract the config and search for /user or /password. Then re-upload only the relevant lines to a reset router.
Important Notes
Why This Matters
Conclusion
You don’t need to boot a MikroTik router just to peek inside a backup. With this open-source extractor, you can decrypt, read, and repurpose configuration data in seconds.
Resources
Subject: Technical Report on MikroTik Backup Extractors