Hashcat rule: Take first letter of each word in given word list

Hashcat rule: Take first letter of each word in given word list - Printable Version

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Hashcat rule: Take first letter of each word in given word list - matt99 - 12-11-2022

What is the correct syntax for a hashcat rule to take the first letter of each word of a given list? So let's say the content of my word list is

Code:
This is a word list

i like hashcat

A Text With Capital Letter

The output should be

Code:
Tiawl

ilh

ATWCL

RE: Hashcat rule: Take first letter of each word in given word list - DanielG - 12-12-2022

That's to complex for rules, you would need to pre-process your word list with something different. For example create something in a scripting language you are comfortable with (pyhton, powershell, etc).

RE: Hashcat rule: Take first letter of each word in given word list - viffju - 12-12-2022

awk works just fine on a Linux system:

Code:
$ cat wordlist.txt 

This is a word list

i like hashcat

A Text With Capital Letter

Code:
$ awk '{for (i=1;i<=NF;i++) $i=substr($i,1,1)}1' OFS= wordlist.txt 

Tiawl

ilh

ATWCL

or an easy, ugly, not that efficient alternative combining grep and sed:

Code:
$ grep -Eoz '\b.' wordlist.txt | sed -e 's/ //g'

Tiawl

ilh

ATWCL

you can pipe the output into hashcat or redirect it to a file to create a new word list:

Code:
$ awk '{for (i=1;i<=NF;i++) $i=substr($i,1,1)}1' OFS= wordlist.txt | hashcat ...

$ awk '{for (i=1;i<=NF;i++) $i=substr($i,1,1)}1' OFS= wordlist.txt  > wordlist.new