Flow Control - Introduction to Bash Scripting

HTB Content Academy
1

Could someone help!!!
When running the decrypt function it gives the following report:

#######################
*** WARNING : deprecated key derivation used.
Using -iter or -pbkdf2 would be better.
bad decrypt
40C782E43A7F0000:error:1C800064:Provider routines:ossl_cipher_unpadblock:bad decrypt:…/providers/implementations/ciphers/ciphercommon_block.c:124:
########################

Thanks in advance

2

Because i’m not a great at bash yet, because its super convenient and most importantly because i found that several scripts have typo or are not properly written in some modules…

I use chatGPT to fix any issues i come across with scripting, it has saved me a bunch… but make sure you are learning while using as well. That way you can fix issues without its help once you get better at it.

3

Thanks for the TIP!

Yes chatGPT is taking over. Luckily managed to solve the problem without it! Turns out and I don´t know why: ${#var} and “echo $var | wc -c” returns different results, I thought both would return the length of the variable!

Thanks again!

1 Like
4

yes it is! Its a good tool especially for learning. I’m taking the CBBH coure and theres been several time where i didn’t understand something and / or it wasn’t well explained…such a “complex” payload. So i’ll take what i need more explanation about and ask chatgpt to break it down for me… So many uses of this tool. I know alot of people will be lazy and have it do all the work but for someone truly wanting to learn, its like having your own instructor / mentor if you know how to ask it correctly.

1 Like
5

Good evening! I`m having a tough time with this section!

var=“9M”
hash=“VTJGc2RHVmtYMTl2ZnYyNTdUeERVRnBtQWVGNmFWWVUySG1wTXNmRi9rQT0K”
salt=“”

for i in {1…28}; do
var=$(echo $var | base64)
if [ $i -eq 28 ]; then
salt=${#var}
fi
done

echo “salt: $salt”

I used Chat GPT as well and been reading many posts but I still don`t get the right answer…