Is it possible to crack a password hashed with sha256 with hashcat? [with screenshots]

SHA256 algorithm was invented to generate 256-bit (or 32-byte) hash. They write it will take you several years to crack it. It's true, but there're cases you can brute-force it (for example, with hashcat tool). At least you can try. In this article I'm using openSUSE Linux distro and openCL framework drivers for my NVIDIA GeForce GTX 1060 Mobile graphic card.

Here's an example, how to crack SHA256-hashed password in several minutes using haschat tool.

Let's take a hash of a password, stored in pass.hash file:

$ cat pass.hash

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Written by Administrator on Wednesday May 6, 2020

How to brute-force .hccapx file using hashcat (Brute-force attack) in openSUSE Linux [with screenshots]

Once you have captured WPA handshake and you've got .cap file, you have to convert given .cap file to .hccapx file format in order to brute force it. There're a lot of approaches, how to successfully crack wi-fi passwords. You never know, what is the structure of a password a surely you won't have enough equipment to crack a long password. In my case I'm trying to brute-force a password supposing it's only 8 digits long, because I know exactly, that the owner of a modem is using a model, which has by default only 8-digits password.

Yes, there's a possibility, that he configured his wi-fi modem manually and changed a password for more secure one, but there's also a chance he's just using it "as is". My computer will crack 8-digits long password in several minutes and I'm going to try to do it. In case I'm not successful, I will think about using dictionaries, because cracking even 8 character long password (digits, letters, capitals, special symbols) will take me years to crack.

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Written by Administrator on Tuesday May 5, 2020

How to install hashcat on Devuan Linux

Hashcat is a part of standard repository of Devuan Linux, so installation is very fast and easy:

$ sudo apt-get install hashcat

my output:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  hashcat-data
The following NEW packages will be installed:
  hashcat hashcat-data
0 upgraded, 2 newly installed, 0 to remove and 25 not upgraded.
Need to get 2,279 kB of archives.
After this operation, 52.8 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://deb.devuan.org//merged ascii/main amd64 hashcat-data all 3.30-1 [2,041 kB]
Get:2 http://deb.devuan.org//merged ascii/main amd64 hashcat amd64 3.30-1 [238 kB]
Fetched 2,279 kB in 19s (117 kB/s)                                             
Selecting previously unselected package hashcat-data.
(Reading database ... 105983 files and directories currently installed.)
Preparing to unpack .../hashcat-data_3.30-1_all.deb ...
Unpacking hashcat-data (3.30-1) ...
Selecting previously unselected package hashcat.
Preparing to unpack .../hashcat_3.30-1_amd64.deb ...
Unpacking hashcat (3.30-1) ...
Setting up hashcat-data (3.30-1) ...
Setting up hashcat (3.30-1) ...
Processing triggers for man-db (2.7.6.1-2) ...

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Written by Administrator on Tuesday May 5, 2020