https://pascal-bergeron.com/en/categories/password-cracking/ Recent content in Password cracking on Pascal Bergeron Hugo -- gohugo.io Copyright © 2026 Pascal Bergeron Mon, 26 May 2025 12:00:00 -0400 https://pascal-bergeron.com/en/posts/bip39-seed-phrase-checksum/ Mon, 26 May 2025 12:00:00 -0400 https://pascal-bergeron.com/en/posts/bip39-seed-phrase-checksum/ If you have noted a BIP39 seed phrase, but one word is missing or unclear, it can still be recovered. One way to go about it is to use a software like BTCRecover to automatically try all 2,048 entries in the BIP39 wordlist. However, you must know one of your Bitcoin addresses for such a software to work properly. Another option is to manually enter each of the 2,048 possible seed phrases into your wallet software and check if any of them leads to your Bitcoins. https://pascal-bergeron.com/en/posts/recover-last-word-bip39-seed-phrase/ Thu, 20 Mar 2025 21:00:00 -0400 https://pascal-bergeron.com/en/posts/recover-last-word-bip39-seed-phrase/ When you create a Bitcoin wallet, you are usually given a set of words that look something like this: deposit hole october flat brass glide biology feature sand actress public resist These words go by various names: seed words, seed phrase, recovery words, recovery phrase, recovery seed, mnemonic words, mnemonic phrase, backup words, backup phrase, secret words, secret phrase&hellip; In the end, they all refer to the same thing. Typically, you will be given 12, 18 or 24 words, though this is not universal. https://pascal-bergeron.com/en/posts/bitcoin-seed-phrase-recoverer/ Mon, 17 Mar 2025 12:00:00 -0400 https://pascal-bergeron.com/en/posts/bitcoin-seed-phrase-recoverer/ <p>Bitcoin Seed Phrase Recoverer is a tool for people who are missing one word (and only one word) in their BIP39 seed phrase. It works by taking advantage of the fact that the last word of a BIP39 seed phrase serves as a checksum: thus, it can be used to reduce the number of seed phrases you have to try in your wallet software to gain back access to your Bitcoins.</p> https://pascal-bergeron.com/en/posts/recover-electrum-wallet/ Wed, 12 Mar 2025 08:00:00 -0400 https://pascal-bergeron.com/en/posts/recover-electrum-wallet/ Electrum is one of the oldest wallet software that is still in use today. As such, many people have used it to store their Bitcoins over a long period of time only to discover – to their horror – that they do not remember the password they chose to protect their wallet. If that&rsquo;s your case, you probably have tried as many passwords as you could remember, but each time, Electrum claimed that your guesses were invalid. https://pascal-bergeron.com/en/posts/recover-lost-bitcoin-seed-words/ Mon, 10 Mar 2025 12:00:00 -0400 https://pascal-bergeron.com/en/posts/recover-lost-bitcoin-seed-words/ When you create a Bitcoin wallet, you are usually given a set of words that look something like this: casual fabric female banana stuff sudden salute crowd analyst ten today document These words go by various names: seed words, seed phrase, recovery words, recovery phrase, recovery seed, mnemonic words, mnemonic phrase, backup words, backup phrase, secret words, secret phrase&hellip; In the end, they all refer to the same thing. Typically, you will be given 12, 18 or 24 words, though this is not universal. https://pascal-bergeron.com/en/posts/what-is-multibit2john/ Thu, 20 Feb 2025 08:00:00 -0400 https://pascal-bergeron.com/en/posts/what-is-multibit2john/ Multibit2John is a script that can be used on both Multibit Classic and Multibit HD wallets. As long as you have a .key, .wallet.aes or .wallet file for your wallet, you should be able to use it with the script. Once the latter is executed, it will generate a string that will look something like this: test.key:$multibit$1*a6e21914459ebb39*7cf945f8e6e2bcd5d3890ceb4a68344d9cb298ec5f4ccab28d7feaf2dd542cca Why would I use the Multibit2John script? The string generated by the script is meant to be used with password crackers that support it, like John the Ripper or hashcat. https://pascal-bergeron.com/en/posts/multibit-corrupt-password/ Fri, 16 Jun 2023 04:00:00 -0400 https://pascal-bergeron.com/en/posts/multibit-corrupt-password/ Multibit Classic is a Bitcoin wallet that was popular during the 2010s, but that was abandoned in 2017. Nowadays, some people are trying to move their Bitcoins out of their wallet, but they can’t because their password is being rejected. Yet, they swear that it is correct and that their password must have been corrupted somehow. I decided to investigate these claims and found out that Multibit Classic does, in some cases, corrupt the password meant to protect the wallet. https://pascal-bergeron.com/en/posts/how-to-recover-multibit-wallet/ Wed, 22 Jun 2022 10:00:00 -0400 https://pascal-bergeron.com/en/posts/how-to-recover-multibit-wallet/ It is estimated that between 2.78 and 3.79 million BTC have been lost. This can happen when people forget the password they have set to protect their Bitcoin wallets. Indeed, many of these lost Bitcoins are stuck in wallets created by Multibit Classic – a software that was launched in 2011 and that was abandoned in 2017. Multibit Classic was very popular back then and many people used it to store Bitcoins that they had bought at ridiculously low prices (at least by today&rsquo;s standards).