Hashing - Crypto 101

• Is base64 encryption or encoding?

  • encoding

• What is the output size in bytes of the MD5 hash function?

  • 16

• Can you avoid hash collisions? (Yea/Nay)

  • Nay

• If you have an 8 bit hash output, how many possible hashes are there?

  • 256

• Crack the hash "d0199f51d2728db6011945145a1b607a" using the rainbow table manually.

  • basketball

• Crack the hash "5b31f93c09ad1d065c0491b764d04933" using online tools

  • Just google it

• Should you encrypt passwords? Yea/Nay

  • Nay

• How many rounds does sha512crypt ($6$) use by default?

  • 5000

• What's the hashcat example hash (from the website) for Citrix Netscaler hashes?

  • here

• How long is a Windows NTLM hash, in characters?

  • 32

• Crack this hash: $2a$06$7yoU3Ng8dHTXphAg913cyO6Bjs3K5lBnwq5FJyA6d01pMSrddr1ZG

  • Copy this hash inside a file called hash
  • hashcat -m 3200 hash /usr/share/wordlists/rockyou.txt
  • ***********

• Crack this hash: 9eb7ee7f551d2f0ac684981bd1f1e2fa4a37590199636753efe614d4db30e8e1

  • hash-identifier and paste the hash
  • echo "9eb7ee7f551d2f0ac684981bd1f1e2fa4a37590199636753efe614d4db30e8e1" > hash
  • john --format=raw-sha256 hash -w /usr/share/wordlists/rockyou.txt
  • ************

• Crack this hash: $6$GQXVvW4EuM$ehD6jWiMsfNorxy5SINsgdlxmAEl3.yif0/c3NqzGLa0P.S7KRDYjycw5bnYkF5ZtB8wQy8KnskuWQS3Yr1wQ0

  • Just google it
  • ********

• Bored of this yet? Crack this hash: b6b0d451bbf6fed658659a9e7e5598fe

  • Just google it
  • *********

• What's the SHA1 sum for the amd64 Kali 2019.4 ISO? http://old.kali.org/kali-images/kali-2019.4/

  • http://old.kali.org/kali-images/kali-2019.4/SHA1SUMS
  • **************************

• What's the hashcat mode number for HMAC-SHA512 (key = $pass)?

  • hashcat --help | grep HMAC-SHA512
  • ****