Gfilui

I am currently attending a class on network security and we need to crack hashed passwords. To do so, we use hashcat. Since there are a lot of hashes, I am trying to write a script that would test the hashed password with all the hashes contained in the list. My script is as follows:

 1 #! /bin/bash
 2 listhsh="hashlist.txt"
 3 
 4 
 5 while read file; do
 6 echo $file
 7 hashcat -a 0 -m $file -O ~/devoir_PIII_Alice.txt /usr/lib/rockyou.txt
 8 done < $listhsh

the file contains the following values. These are codes defining the type of hash to be tested.

900
0
5100
100
1300
1400
10800
1700
5000
600

The problem I have is that the script opens the file, takes the first line that contains the code for hash type to be tested and runs hashcat with the value in $file=900. However, once the test finishes with the first value, the script executes hashcat with the same value of $file=900. So the end result is hashcat doing the same test with $file=900 as many times as there are values in the list.

One option could be a for loop. The -m option is for the hashes to be ran. The file is supposed to feed in value and loop each hash type.

The following changes should help your script. I substituted hash for file.

#!/bin/bash
listhsh="hashlist.txt"

for hash in $(cat $listhsh); do
echo $hash
 hashcat -a 0 -m $hash -O ~/devoir_PIII_Alice.txt /usr/lib/rockyou.txt
done

As a test, I ran the line as an echo line to see if it would work:

~$ ./hashcat_test 
900
hashcat -a 0 -m 900 -O ~/devoir_PIII_Alice.txt /usr/lib/rockyou.txt
0
hashcat -a 0 -m 0 -O ~/devoir_PIII_Alice.txt /usr/lib/rockyou.txt
5100
hashcat -a 0 -m 5100 -O ~/devoir_PIII_Alice.txt /usr/lib/rockyou.txt
100
hashcat -a 0 -m 100 -O ~/devoir_PIII_Alice.txt /usr/lib/rockyou.txt
1300
hashcat -a 0 -m 1300 -O ~/devoir_PIII_Alice.txt /usr/lib/rockyou.txt
1400
hashcat -a 0 -m 1400 -O ~/devoir_PIII_Alice.txt /usr/lib/rockyou.txt
10800
hashcat -a 0 -m 10800 -O ~/devoir_PIII_Alice.txt /usr/lib/rockyou.txt
1700
hashcat -a 0 -m 1700 -O ~/devoir_PIII_Alice.txt /usr/lib/rockyou.txt
5000
hashcat -a 0 -m 5000 -O ~/devoir_PIII_Alice.txt /usr/lib/rockyou.txt
600
hashcat -a 0 -m 600 -O ~/devoir_PIII_Alice.txt /usr/lib/rockyou.txt

Hope this helps!

You're not quoting your expansions, so they're being evaluated by the shell, which could be problematic. Try this:

#! /bin/bash
listhsh="hashlist.txt"
while read file; do
 echo "$file"
 hashcat -a 0 -m "$file" -O ~/devoir_PIII_Alice.txt /usr/lib/rockyou.txt
done < $listhsh

These could be useful:
https://unix.stackexchange.com/questions/68694/when-is-double-quoting-necessary

https://www.cyberciti.biz/faq/unix-howto-read-line-by-line-from-file/