Bitcoin Forum

The user jackjack here wrote pywallet (you can search for it on githum and it should appear under the name jackjack-jj/pywallet).

What drive was the file on before it became corrupted? Was it in amongst other files or on its own on the drive - can you get that drive professionally recovered, have you?

I have that same type of file (a little different/but same just older) and have been reading about going through the source code to retrieve the "redeem script" or the "derivation method" but first I wanted to ask .. what is that src/wallet/walletdb.cpp specifically? as I don't see any strings but I do see key all over..

my python said "cannot import name 'generator_secp256k1' from 'pycoin.ecdsa" when trying to install bitwalletrecover.

~quoting 2 year old post~

Hi folks! I have a Old corrupt wallet.dat from a client. I tried some things to recover those 33.54 BTC, since July 16. This is the wallet:

https://blockchain.info/address/1KYYVUwWSMrNkje41jzvubSRsjABu3EUt6 (https://blockchain.info/address/1KYYVUwWSMrNkje41jzvubSRsjABu3EUt6)

#include <stdio.h>

int main() {
  int c, i;

/* assume that the 32 bytes following the sequence 0420 are a private key */

  while ((c = getchar()) != EOF) {
    if (c == 0x04) {
      if ((c = getchar()) == 0x20) {
        for (i = 0; i < 32; i++)
          printf("%02x", getchar());
        printf("\n");
        fflush(stdout);
      } else {
        ungetc(c, stdin);  /* push back in case it's 0x04 */
      }
    }
  }
}

Your unencrypted wallet.dat sounds pretty messed up if not even one 'key' related entry was found.

Take a look at this https://github.com/bitcoin/bitcoin/blob/48b5b84ee511d5ccd0d47bb0018c1b3c9ddebeff/src/wallet/walletdb.cpp
There should be plenty of entries starting or ending with 'key'.


Bro; please share with me you have wallet.dat file in your hand. Also please it is un-encrypted old wallet.dat. Please follow installation on https://github.com/jackjack-jj/pywallet

After that please run the as following script:

#!/usr/bin/env python2
import sys
import struct
from bsddb.db import *
from hashlib import sha256

# Dumps the private keys from an unencrypted wallet.dat file.
# Inspired by pywallet.
# Run with Python 2.7.
# Donations: 34rHZwgXDnkKvrBAU2fJAhjySTTEFroekd.


B58 = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"

if not len(sys.argv) == 2:
    print("Usage: %s wallet.dat" % sys.argv[2])
    sys.exit(1)

def read_size(buffer, offset):
    size = ord(buffer[offset])
    offset += 1

    if size == 0xfd:
        size = struct.unpack_from("<H", buffer, offset)[0]
        offset += 2
    if size == 0xfe:
        size = struct.unpack_from("<I", buffer, offset)[0]
        offset += 4
    if size == 0xff:
        size = struct.unpack_from("<Q", buffer, offset)[0]
        offset += 8

    return offset, size

def read_string(buffer, offset):
    offset, string_len = read_size(buffer, offset)
    return offset + string_len, buffer[offset: offset + string_len]

def b58_encode(d):
    out = ""
    p = 0
    x = 0

    while ord(d[0]) == 0:
        out += "1"
        d = d[1:]

    for i, v in enumerate(d[::-1]):
        x += ord(v)*(256**i)

    while x > 58**(p+1):
        p += 1

    while p >= 0:
        a, x = divmod(x, 58**p)
        out += B58[a]
        p -= 1

    return out

def b58check_encode(d):
    checksum = sha256(sha256(d).digest()).digest()[:4]
    return b58_encode(d + checksum)


db = DB()
db.open(sys.argv[1], "main", DB_BTREE, DB_RDONLY)

items = db.items()

for item in items:
    k, v = item
    koff, voff = 0, 0
    koff, item_type = read_string(k, koff)

    if item_type == "key":
        koff, pubkey = read_string(k, koff)
        voff, privkey = read_string(v, voff)

        if len(privkey) == 279:
            secret = privkey[9:9+32]
        else:
            secret = privkey[8:8+32]

        if pubkey[0] != "\x04":
            secret += "\x01"

        print(b58check_encode("\x80" + secret))
        #print(secret.encode("hex"))
db.close()

You have output compressed private key as like:
KxzTqVvTXB9VJTZ25xZk7yYq4V4gon8HsoTkbADhSUZVe7q5LUeQ
L2TResn8sq2K7NTH8R4SJAhB2Rf4iFEY3WwDGwqHNh3Ya1Y9uDpX

Thanks....

Guess you have to resort to: https://walletrecoveryservices.com/  afterall.

Thanks for the response, i tried to dump my wallet and i get "error un dump page". See the image

https://drive.google.com/file/d/1VriRG4hyGxcqBNRL5QL7x7Wzl4QR185X/view?usp=sharing

I quickly wrote a small Python script for parsing a wallet and dumping the private keys from it (run with Python 2):


It's very simple, and outputs a bunch of WIF private keys (you can paste them into Electrum's Sweep dialog for example, but if there's many of them, it's going to take a while to check their balances, so be patient.
NOTE: the method of working with the database used here is different from pywallet's. It may work better on corrupted wallets.

Thanks for the response, my client doesn't have the original drive where the wallet was not corrupted.

You can't dump a corrupt wallet to json as it won't have the correct format.
A pip install of the bsddb may be required.

You might also be able to get bitcointools to turn a private key from one of the mentioned scripts and convert it to an address to scan for a balance on blockchain.info's API.
How do you know this is your exact wallet.dat? Do you just think it's for bitcoin or had you put it on a specific drive to back it up which it got corrupted on. Do you have any backups of the corrupted wallet also as in if you did a full system backup at the time that you still have a copy of?

are you sure the file is not encrypted?, if yes
then call me at this mail (hanya8493@gmail.com)
i have a program that extracting privkey from uncrypted wallet.dat
i wouldn't ask you for the file of course ::)
but i will show you instructions to make sure if the file is encrypted or not
then i will give you the program with instructions for use.

Don't worry, at least
i have no reason to steal someone's money just because i don't want to share the program with anyone, and i will tell him to delete it after using it


in the end, don't make yourself (Detective Conan -,-) to judge others without evidence
because your words this affected me.

If your wallet is password protected and damaged I am not sure how you will solve this problem!

or
sorry, that mean actually all is scam?

topicstarter is too greedy

he will be deceived by the same people


people who want to get everything themselves and do not trust anyone will become victims of scammers, as usual