Monero GUI Wallet Password Recovery

Monero (XMR) is the leading privacy-focused cryptocurrency, using ring signatures, stealth addresses, and RingCT to obscure transaction details. Its wallet encryption reflects the same security philosophy — the key derivation uses CryptoNight, a memory-hard hash function purpose-built to resist GPU and ASIC acceleration. This makes Monero password recovery significantly more challenging than Bitcoin or Ethereum wallet recovery.

About Monero GUI Wallet

The Monero GUI wallet is the official graphical interface for Monero, developed by the Monero core team. It supports both local (full node) and remote node connections. Key characteristics:

• 25-word mnemonic seed — Monero uses its own mnemonic system (not BIP39) with a 1626-word list
• .keys file — encrypted container holding the private spend key and private view key
• CryptoNight KDF — memory-hard key derivation designed to resist hardware acceleration
• Subaddress support — unlimited stealth addresses derived from the master seed
• Ring signatures + RingCT — transaction privacy through mixins and confidential transactions

Monero wallet encryption details

Locating the .keys file

Extracting the hash for hashcat mode 14100

Hashcat mode 14100 targets Monero .keys files. You need to extract a hash in the correct format using the monero2john.py tool from John the Ripper's bleeding-jumbo branch:

# Install John the Ripper bleeding-jumbo (or just monero2john.py)
# Extract the hash from the .keys file
python3 monero2john.py MyMoneroWallet.keys > monero.hash

# The extracted hash looks like:
# MyMoneroWallet.keys:$monero$0*4c6f7374204d6f6e65726f...*...*...

# Run hashcat with mode 14100
# Dictionary + rules
hashcat -m 14100 -a 0 monero.hash rockyou.txt \
    -r OneRuleToRuleThemAll.rule -w 3

# Mask attack for partial known passwords
hashcat -m 14100 -a 3 monero.hash "?u?l?l?l?l?l?d?d" \
    --increment --increment-min=6 --increment-max=10 -w 3

# Hybrid: dictionary prefix + brute suffix
hashcat -m 14100 -a 6 monero.hash personal-words.txt ?d?d?d?d -w 3

# NOTE: Due to CryptoNight's memory-hard properties,
# hashcat must allocate ~2 MB per hash instance.
# Reduce -w and avoid running multiple instances for best stability.
# Expect 500-2000 H/s on an RTX 4090 — this is 100-1000x slower
# than Bitcoin Core (mode 11300).

Understanding CryptoNight key derivation

The reason Monero recovery is so much slower than Bitcoin or Ethereum is the CryptoNight hash function. Originally designed for Monero's proof-of-work mining, CryptoNight is memory-hard:

• Each hash requires approximately 2 MB of fast memory (scratchpad)
• The scratchpad is filled with AES-encrypted blocks, then repeatedly read and written in a latency-sensitive loop
• This design makes it resistant to GPU acceleration — GPUs have high memory bandwidth but the latency-bound random-access pattern favours CPUs
• Hashcat implements CryptoNight-0 for mode 14100, but performance is limited by memory latency, not compute

Practically, this means that attacking a Monero .keys file is approximately 100-1000x slowerper candidate than attacking a Bitcoin Core wallet.dat. A password that would take 1 day to crack on Bitcoin Core might take 3-12 months on Monero — if it is even feasible at all.

Recovery feasibility

Alternative: CPU-based attacks with xmrig

Because CryptoNight is memory-bandwidth and latency-bound, CPU-based attacks can actually be competitive with GPU attacks for this specific hash. The monero2john hash can also be fed to John the Ripper (CPU-only mode) which may perform similarly to hashcat on GPU:

# CPU-based attack with John the Ripper
john --format=monero monero.hash --wordlist=candidates.txt

# Alternatively, use a threaded Python script with monero-python
# to verify passwords directly against the .keys file
python3 << 'PY'
import monero.wallet

# Try passwords directly against the wallet
# (This is slower per-check but uses the official implementation)
wallet_path = "MyMoneroWallet"
with open("candidates.txt") as f:
    for line in f:
        pw = line.strip()
        try:
            wallet = monero.wallet.Wallet(wallet_path, password=pw)
            balance = wallet.balance()
            print(f"PASSWORD FOUND: {pw}")
            break
        except Exception:
            pass
PY

Step-by-step recovery guide

1. Back up the .keys file. It is the only thing that can be attacked. Without it, you need the 25-word mnemonic seed.
2. Run monero2john.py against the .keys file to produce a hashcat-compatible hash.
3. Build a tight candidate wordlist — since each guess is expensive (500-2000 H/s max), every candidate must count. An unfocused wordlist of 10 million words would take hours just to test the base words, never mind rules.
4. Start with the most likely candidates: short passwords, reused passwords, personal words with year suffixes. Use brute-force mask attacks only as a last resort for very short patterns (4-6 known characters + 2-3 unknown).
5. Run hashcat mode 14100 on the most powerful GPU available. An RTX 4090 cluster is ideal. Let it run for days or weeks if the password is critical.
6. If hashcat does not find it, consider professional recovery. We have both GPU and distributed CPU clusters optimised for CryptoNight workloads.

Important: 25-word seed vs .keys file

Monero uses a 25-word mnemonic seed that encodes the private spend key. This is fundamentally different from BIP39:

Related guides

• Bitcoin Core wallet.dat recovery — comparison: PBKDF2 vs CryptoNight.
• Electrum wallet password recovery — Bitcoin wallet with much faster KDF.
• Avoid crypto recovery scams — especially relevant for Monero given the difficulty.

Frequently asked questions