Technical Memo: Local Storage Extraction

Lost Access to Your Browser Extension Wallet?

If you lost your seed phrase but still have the computer where you installed the wallet,
recovery is often possible.

How It Works: The "Vault Data"

Browser extensions like MetaMask, Ronin, and Binance Chain Wallet do not store your private keys in plain text. Instead, they encrypt your seed phrase into a "Vault" using your password. This Vault is stored locally on your hard drive.

The Critical File

The data is typically stored in LevelDB format (`.ldb`) deep within your operating system's application data folder.

Windows Path
%AppData%\Local\Google\Chrome\User Data\Default\Local Extension Settings\[EXTENSION_ID]
MacOS Path
~/Library/Application Support/Google/Chrome/Default/Local Extension Settings/[EXTENSION_ID]
💡

Did you reinstall Chrome?

Even if you uninstalled the extension, the "Local Extension Settings" folder typically remains on the disk until you wipe the computer. We can extract this file forensically.

Partnered with DataClinic

We handle the cryptographic decryption for clients referred by DataClinic UK.

🔒 NDA & Confidentiality

We provide a standard Non-Disclosure Agreement (NDA) for all recovery cases to guarantee the safety and privacy of your data.

Our Decryption Process

  • We extract the `000003.log` or `.ldb` vault file.
  • We extract the `salt` and `iv` (Initialization Vector).
  • We use our GPU Cluster to brute-force your partial password.
  • Success Rate: 90%+ if you recall part of the password.

Technical Identification: Chrome Extension IDs

Extension data is stored in folders named after their unique 32-character ID. To find your specific wallet, look for these IDs in your `Local Extension Settings` directory:

MetaMask: nkbihfbeogaeaoehlefnkodbefgpgknn
Phantom: bfnaoagmocialkpmbdihjmcnbhhaebll
Binance: fhbohimaelbohpjbbihbeogaxhpnmkmi
Trust Wallet: egjleclpeghpdaebidmikdbooakomhcj

The Importance of .log Files

Most users look for `.ldb` files (LevelDB segments), but the most recent data often resides in `000003.log` or similar sequentially numbered log files. These logs contain the write-ahead entries that haven't yet been committed to the main database. Our proprietary parser, RollanVault, can reconstruct fragmented log entries to find the encrypted mnemonic even if the main database is corrupted.

Do NOT Reformat Your Computer

Every minute you use the computer, you risk overwriting the deleted vault file.
Stop using the device immediately.

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