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【TryHackMe】Break it:Walkthrough

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概要

TryHackMe「Break it」のWalkthroughです。

Task1

Q1.[Super easy] MVQXG6K7MJQXGZJTGI======

base32でデコードします。

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

A.easy_base32

Q2.[Easy] TVJYWEtZVE1NVlBXRVlMVE1WWlE9PT09

Hint.Two is better than one

base64->base32の順番でデコードすると解読できます。

$ echo "TVJYWEtZVE1NVlBXRVlMVE1WWlE9PT09" | base64 -d | base32 -d
double_bases

A.double_bases

Q3.[Moderate] GM4HOU3VHBAW6OKNJJFW6SS2IZ3VAMTYORFDMUC2G44EQULIJI3WIVRUMNCWI6KGK5XEKZDTN5YU2RT2MR3E45KKI5TXSOJTKZJTC4KRKFDWKZTZOF3TORJTGZTXGNKCOE======

Hint.There are base other than base64

base32->base58->Hex->base64の順で解読に成功しました。

image.png

A.base16_is_hex

Q4.[Hard] HRBUGQDUHFWDIXKUIBWXIJTHIE3DCY3BIE2FKQSZHNDE6MRUIA2TWWDMHRBV2ZKCHQWFCTLPIE2EEJDBIBZCEW3OHUSTOLRCHNFGMVC6IFJXIQ2AHVMVONSBHVOVIM2MHVPV42J4HQVCQ4REIFHVIJ2WHFWDYQSUHROGILJCIFIU23CXHNCEIXK2HRDVSXKOHV2SQJLC

Hint.Which base contain Ascii character from 33 ('!') to 127 ('u')

base32->base85->base64->base58->base85->base64->base64の順で解読に成功しました。

image.png

A.that_is_a_lot_of_bases

Q5.[Insane] GIUTMORPGBFEMVRKGEVECRZRFM7GGW(省略)

Hint.The shorter, the better.

base32->base85->decimal->Hex->base91->base58->Hex->base64->decimal->Hexの順で解読に成功しました。

image.png

A.defense_the_base

Task2

Q1.[Easy] PJXHQ4S7GEZV6ZTDOZQQ====

Hint.Base or cipher or both?

base32->rot13の順で解読に成功しました。

image.png

A.make_13_spin

Q2.[Moderate] NjZMKVhATl1EcEI2Jio4Q0xuVy1EZSo5ZkFLV0M6QVUtPFpGQ0InIkReYg==

Hint.It was deciphered in 1863

base64->base85->Vigenere cipherの順で解読に成功しました。

image.png

A.I luv vigenere cipher

Q3.[Hard] -!r/X,]n/Z-Zs\X,X$,rI<@]#-9Oh,-=A]R-p9+

Hint.base, rot, base, base, rot. Ah, whatever

base85->rot47->base64->base32->rot13の順で解読に成功しました。

image.png

A.decode_and_rot

Q4.[Insane] GZXSMPKXH4RGE4TKGQSV(省略)

Hint.Oops, i put the key at the wrong place

base32->base85->base91->decimal->Hex->base64->base58->Vigenere Cipher(key=tangodown)の順で解読に成功しました。

image.png

A.you are a real code cracker

Task3

Q1.[Moderate] 2D 37 2B 19 31 99 31 B3 B2 AB A5 18 32 37 20 B3 B2 AC 2D 1A 31 B4 A1 3A A4 A3 9C B4 AD 36 AC 9E

Hint.Logic shift

block shift left->base64->rot13の順で解読に成功しました。

image.png

image.png

A.shift logic like a boss

Q2.[Hard] 19 1A 1C 99 1C 9C A8 38 27 B2 34 27 B9 27 26 28 3C 3B AA 28 A5 AA 2A 29 3C 29 B2 B2 21 B1 AC A6 1C AC 29 A8 38 99 2C

Hint.Arithmetic shift (8 bits)

arithmetic shift(8 Bits)->base58->rot13の順で解読に成功しました。

image.png

image.png

A.shift arithmetic like a boss

Q3.[Insane] A9 A8 2B EE 2A AA C9 C8 C9 AA A8 0F 2A 8A AA EE A9 8A CA A8 A9 4F 6D 46 E9 A8 A8 0F A9 8A 6D 86 A9 AA A9 26 2A 8A 48 E8

Hint.Arithmetic (8 bits), base, logic, base, rot (Best hints i can give)

bit shift->base64->bist shift->base85->rot13の順で解読に成功しました。

image.png

image.png

image.png

image.png

A.God of shifs

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