Try Hack Me Encryption — Crypto 101

Today I am gonna write a walkthrough about the challenge Encryption — Crypto 101

Task 2 — key terms

Are SSH keys protected with a passphrase or a password?

passphrase

Task 3 — why is Encryption Important

What does SSH stand for?

Secure Shell

How do webservers prove their identity?

certificates

What is the main set of standards you need to comply with if you store or process payment card details?

PCI-DSS

Task 4— Curial Crypto Maths

What’s 30 % 5?

0

What’s 25 % 7

4

What’s 118613842 % 9091

3565

Task 5— Types of Encryption

Should you trust DES? Yea/Nay

Nay

What was the result of the attempt to make DES more secure so that it could be used for longer?

Triple DES

Is it ok to share your public key? Yea/Nay

Yea

Task 6— RSA-Rivest Shamir Adleman

p = 4391, q = 6659. What is n?

29239669

Task 8— Digital Signature and Certificates

What company is TryHackMe’s certificate issued to?

CloudFlare

Task 9— SSH Authentication

What algorithm does the key use?

RSA

Crack the password with John The Ripper and rockyou, what’s the passphrase for the key?

delicious

To get the key first you need to download it the Id_rsa file then in Kali linux
has a software call john the ripper

here I have rename the file as id_rsa_ssh. if you follow these command you will be able to crack any ssh passwords

if you never used rockyou.txt file in linux you have to unzip it. it locted in /usr/share/wordlists/rockyou.txt.gz
to unzip — gzip -d /usr/share/wordlists/rockyou.txt.gz

Task 11— PGP,GPG and AES

You have the private key, and a file encrypted with the public key. Decrypt the file. What’s the secret word?

Pineapple

First you need to unzip the file then you receive 2 files call message.gpg and tryhackme.key which is private key. then you need to import the key to GPG and the decrypt the msg using it