Break It

Date: 14, June, 2021

Author: Dhilip Sanjay S

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Bases

Base 32

• Answer: easy_base32

• Steps to Reproduce:

$ echo MVQXG6K7MJQXGZJTGI====== | base32 -d
easy_base32

Double Bases

• Answer: double_bases

• Steps to Reproduce:

$ echo TVJYWEtZVE1NVlBXRVlMVE1WWlE9PT09 | base64 -d
MRXXKYTMMVPWEYLTMVZQ====
$ echo TVJYWEtZVE1NVlBXRVlMVE1WWlE9PT09 | base64 -d | base32 -d
double_bases

Multiple Bases

• Answer: base16_is_hex

• Steps to Reproduce:

  • Use Cyberchef!

$ echo GM4HOU3VHBAW6OKNJJFW6SS2IZ3VAMTYORFDMUC2G44EQULIJI3WIVRUMNCWI6KGK5XEKZDTN5YU2RT2MR3E45KKI5TXSOJTKZJTC4KRKFDWKZTZOF3TORJTGZTXGNKCOE====== | base32 -d | base58 -d | xxd -r -p | base64 -d
base16_is_hex

Lot of Bases

• Answer: that_is_a_lot_of_bases

• Steps to Reproduce:

  • Use cyberchef:

    • From Base32

    • From Base85

    • From Base64

    • From Base58

    • From Base85

    • From Base64

    • From Base64

Insane

• Answer: defense_the_base

• Steps to Reproduce:

  • Use cyberchef and dcode.fr

    • From Base32 -> From Base85 -> From Decimal -> From Hex

    • From Base91

    • From Base58 -> From Hex -> From Base64 -> From Decimal -> From Hex

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Base and Ciphers

Base 32 + Rot 13

• Answer: make_13_spin

• Steps to Reproduce:

$ echo PJXHQ4S7GEZV6ZTDOZQQ==== | base32 -d | rot13
make_13_spin

Vigenere cipher

• Answer: I luv vigenere cipher

• Steps to Reproduce:

  • From Base32 -> From Base64

  • Use Vigenere cipher with the key obtained!

Bases and ROTs

• Answer: decode_and_rot

• Steps to Reproduce:

  • From Base85 -> ROT47 -> From Base64 -> From Base32 -> ROT13

Insane

• Answer: you are a real code cracker

• Steps to Reproduce:

  • Use cyberchef and dcode.fr

    • From Base32 -> From Base85

    • From Base91

    • From Decimal -> From Hex -> From Base64

    • Note down the Key

    • From Base58 -> Vigenere Decode using the key

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Base, Cipher and Bit shift

• Use Hex workshop, Cyberchef

Moderate

• Answer: shift logic like a boss

• Steps to Reproduce:

  • Block Shift Left (Logical shift)

  • From Base64 -> ROT13

Hard

• Answer: shift arithmetic like a boss

• Steps to Reproduce:

  • Bit Rotate Left (8 Bits) (Arithmetic shift)

  • From Base58 -> ROT13

Insane

• Answer: God of shifs

• Steps to Reproduce:

  • Bit Rotate Left (8 Bits) - 3 times

  • From Base64

  • Block Shift Left - 2 times

  • From Base85 -> ROT13

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