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Post Author Forum Replies [desc] Views Posted
    Thread: Noob: DES-OFB key recovery w/known contents
Post: Noob: DES-OFB key recovery w/known contents

Hi all. I am new to HashCat and have been trying to figure out how to get Hashcat to recovery the encryption key when I know the original contents and encrypted contents.. Also too the files a ...
Davidi74 hashcat 2 802 04-20-2020, 12:21 AM
    Thread: Noob: DES-OFB key recovery w/known contents
Post: RE: Noob: DES-OFB key recovery w/known contents

undeath Wrote: (04-20-2020, 12:50 AM) -- That's not supported. -- Thanks for your reply. I guess thats why I couldn't figure out how to do it :)
Davidi74 hashcat 2 802 04-20-2020, 09:35 PM
    Thread: hashcat -b is not seeing my grahpic card
Post: RE: hashcat -b is not seeing my grahpic card

sudo apt install nvidia-driver-440 This installs version 440, You may choose another This should install all deps. Tested with Ubuntu 18.04 running Hashcat like a dream :)
Davidi74 hashcat 4 889 06-16-2020, 11:27 AM
    Thread: DES-ECB
Post: DES-ECB

Hi, I'm trying to test decrypting a DES-ECB hash. I use a tool to encrypt 0000000000000000 with the key of 000000000000cccc giving the cypher text of 5c3278aafe9127de. When I run hashcat wit...
Davidi74 hashcat 7 1,521 04-21-2020, 11:35 PM
    Thread: DES-ECB
Post: RE: DES-ECB

undeath Wrote: (04-22-2020, 12:10 AM) -- That's because DES operates on 7 bits only. Both keys are valid. -- Thanks heaps for your reply. Thats what I thought, but when I try it with the smaller ke...
Davidi74 hashcat 7 1,521 04-22-2020, 01:25 AM
    Thread: DES-ECB
Post: RE: DES-ECB

undeath Wrote: (04-22-2020, 01:29 AM) -- bits != bytes -- Sorry, I don't follow :( I thought 7 bytes=56 bits for the key
Davidi74 hashcat 7 1,521 04-22-2020, 02:00 AM
    Thread: DES-ECB
Post: RE: DES-ECB

hops Wrote: (04-22-2020, 12:03 PM) -- In DES the least significant bit of each key byte is used as parity bit and does not affect the en-/decryption process. 0xcc in binary is 11001100 while 0xcd is...
Davidi74 hashcat 7 1,521 04-22-2020, 09:49 PM
  Lightbulb Thread: DES with partial plain text
Post: DES with partial plain text

Hi. I'm hoping someone can tell me how to "white out" a couple of values that are unknown in the plain text for a brute force attack. I have been searching all over the forums and have been unab...
Davidi74 hashcat 11 1,624 06-14-2020, 09:32 PM
    Thread: DES with partial plain text
Post: RE: DES with partial plain text

Hi and thanks for the replies. Sorry Royce, I didn't explain myself very well, Philsmd is on the right track on what I'm trying to achieve. I know the first part of the key and my rig here can ...
Davidi74 hashcat 11 1,624 06-15-2020, 02:45 AM
    Thread: DES with partial plain text
Post: RE: DES with partial plain text

philsmd Wrote: (06-15-2020, 09:02 AM) -- now you are confusing ciphertext and plaintext the format of -m 14000 hashes is 8_bytes_ciphertext_in_hex:8_bytes_plaintext_in_hex -- My bad Should b...
Davidi74 hashcat 11 1,624 06-15-2020, 09:07 AM
    Thread: DES with partial plain text
Post: RE: DES with partial plain text

Thanks for your time to even go as far to provide a script to iterate all of the combinations. What your describing seems exactly what I was looking for. My only question is wouldn't this be a big ...
Davidi74 hashcat 11 1,624 06-15-2020, 09:30 AM
    Thread: DES with partial plain text
Post: RE: DES with partial plain text

Thanks HEAPS for that, You know your stuff :) I will give it a go and let you know as it might be useful for others that need a partial match with DES. I am reasonably familiar with Git and the ...
Davidi74 hashcat 11 1,624 06-16-2020, 05:04 AM
    Thread: DES with partial plain text
Post: RE: DES with partial plain text

Allow me to illustrate Say I feed this into hashcat for cracking xx??xxxx:xxxxxxxx And I know the first part of the key xx?????? The above is hexadecimal of course. The question marks a...
Davidi74 hashcat 11 1,624 06-15-2020, 08:58 AM