Warp Wallet Challenge 2 - Printable Version +- hashcat Forum (https://hashcat.net/forum) +-- Forum: Misc (https://hashcat.net/forum/forum-15.html) +--- Forum: General Talk (https://hashcat.net/forum/forum-33.html) +--- Thread: Warp Wallet Challenge 2 (/thread-6921.html) |
Warp Wallet Challenge 2 - cesko80 - 10-06-2017 here you can find an interesting challenge about cracking a bitcoin "brain wallet". Privatekey is derived from a passphrase is 8 characters long, only alphanumerics. For example, 'b234FEzz'. the salt is a@b.c I've found a github repo tryng to brute force using a CPU only GO script, any idea how could perform hascat with an ad-hoc algorithm? here hashing detail: s1 = scrypt(key=(passphrase||0x1), salt=(salt||0x1), N=218, r=8, p=1, dkLen=32) s2 = pbkdf2(key=(passphrase||0x2), salt=(salt||0x2), c=216, dkLen=32, prf=HMAC_SHA256) keypair = generate_bitcoin_keypair(s1 ⊕ s2) RE: Warp Wallet Challenge 2 - kiara - 10-06-2017 whats that? RE: Warp Wallet Challenge 2 - royce - 10-06-2017 Hashcat doesn't support ad-hoc algorithms. John the Ripper supports ad-hoc algorithms, but only using certain components. Direct support would be required. This thread might be informative. I have no experience with it, but Brainflayer may also be of use. RE: Warp Wallet Challenge 2 - kiara - 10-06-2017 i think that would be dope to create an hashcat algo for 20 BTC ^,^ RE: Warp Wallet Challenge 2 - Chick3nman - 10-06-2017 I've already looked into this challenge once before, as well as worked on attack code for it. The keyspace is VERY large for the algorithm so it become a bit of an issue if you try and attack it. RE: Warp Wallet Challenge 2 - kiara - 10-06-2017 (10-06-2017, 05:20 PM)Chick3nman Wrote: I've already looked into this challenge once before, as well as worked on attack code for it. The keyspace is VERY large for the algorithm so it become a bit of an issue if you try and attack it. its maybe huge, but if we combined gpu powa and solve it we can then split the reward. RE: Warp Wallet Challenge 2 - cesko80 - 10-07-2017 I see as a major issue the low hashrate reachable against scrypt algorithm, considering also the parameter r=8 slowing all down dramatically. Since the challenge'll close the 1st Jan , we probably would have some chance only with something like 20 MH/s RE: Warp Wallet Challenge 2 - kiara - 10-07-2017 i have a nice rig x8 1080, that i can contribute to the task, but some one as to make an algo first RE: Warp Wallet Challenge 2 - rthomas6 - 12-14-2017 Could you use a Litecoin ASIC miner since they use scrypt? |