Recover Eth Presale

Ethereum Presale Password Recovery

Recovery

Ethereum Presale Password Recovery

We specialize in recovering access to Ethereum wallets using advanced cryptographic methods. Here’s what we offer:

1. Decrypting Ethereum JSON Files

  • Problem Solved: Forgotten password for your JSON wallet file (e.g., MyEtherWallet, GETH, MIST).
  • Technical Process:
    • Web3 Secret Storage V3 keystores use AES-128-CTR with scrypt or PBKDF2; the KDF and parameters must be read from the file. Original presale encseed wallets use a different format, described below.
    • We use optimized GPU/CPU clusters to brute-force or dictionary-attack the password, leveraging any clues you provide (e.g., partial passwords, keyword hints).
  • Supported Formats: UTC/JSON files from MyEtherWallet, MIST, GETH, and ETH presale wallets.

2. Ethereum Presale Wallet Recovery

  • Problem Solved: Lost passwords for 2014 ETH presale wallets.
  • Technical Process:
    • Original presale wallets use PBKDF2-HMAC-SHA256 with 2,000 iterations and the password as the salt. The first 16 derived bytes are the AES-128-CBC key; the first 16 bytes of encseed are the IV. Recovery feasibility depends on password strength and available clues.
    • After decrypting the seed and removing PKCS7 padding, the private key is derived from the seed and checked against the recorded Ethereum address. See the go-ethereum presale implementation.

3. Corrupted ETH JSON File Repair

  • Problem Solved: Wallet files damaged by incomplete saves, disk errors, or improper edits.
  • Technical Process:
    • Analyze hex/JSON structure to salvage encrypted keys or repair formatting errors.
    • Preserve surviving ciphertext and encryption parameters, then assess whether decryption is possible. Missing encrypted seed bytes cannot be reconstructed from a public address alone.

4. Private Key Extraction

  • Recover: Private keys from software wallets (MetaMask, Exodus) or hardware wallets (Trezor, Ledger) via:
    • Seed Phrases: Rebuild BIP39 mnemonics (12/24 words) and derive keys using BIP32/BIP44 paths.
    • Exodus seed.seco Files: Decrypt backups using password-cracking methods.


Supported Wallets & Technical Specs

We work with most major Ethereum wallets:

Wallet File/Backup Type Encryption Standard
MyEtherWallet JSON (AES-128-CTR) scrypt (N=8192, r=8, p=1)
ETH Presale Wallets JSON encseed (AES-128-CBC) PBKDF2-HMAC-SHA256 (2,000 iterations)
MetaMask V3 Encrypted JSON PBKDF2-SHA256 + AES-256-GCM
Trezor/Ledger 12/24-word BIP39 Seed BIP39 Mnemonic + Optional Passphrase
Exodus seed.seco (Encrypted JSON) AES-256 + PBKDF2 (100k iterations)

Technical Deep Dive

  • Brute-Force Attacks:
    • GPU/CPU testing is tailored to the actual encryption and KDF parameters. Candidate rates vary substantially by wallet format and hardware.
  • Seed Phrase Recovery:
    • BIP39 mnemonics with checksums allow combinatorial recovery of missing/incorrect words.
  • Corruption Repair:
    • Manual hex editing or script-based parsing to reconstruct valid JSON/encrypted payloads.