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Translation & Shifting -Spectogram - Stegnography - Security thru Obscurity

  • 01101100 01100101 01110100 01110011 00100000 01110100 01110010 01111001 00100000 01110011 01101111 01101101 01100101 00100000 01100010 01101001 01101110 01100001 01110010 01111001 00100000 01101111 01110101 01110100 00100001

Binary to Plain text decoder online will get this done !

  • MJQXGZJTGIQGS4ZAON2XAZLSEBRW63LNN5XCA2LOEBBVIRRHOM======

This hash contains an = in the end - which basically means it's base encoded but we don't know which base algorithm it is - base32,58,62,64,85 ?

Trying all the base formats reveals it - It is Base32

  • RWFjaCBCYXNlNjQgZGlnaXQgcmVwcmVzZW50cyBleGFjdGx5IDYgYml0cyBvZiBkYXRhLg==

A simple one - Base64 encoded

  • 68 65 78 61 64 65 63 69 6d 61 6c 20 6f 72 20 62 61 73 65 31 36 3f

This hash looks like Hex - So, trying hex to plain text decoder online works fine !

  • Ebgngr zr 13 cynprf!

Ok so this looks a bit critical to identify, since it has 13 in it and the alphabets seems to be kinda rotated - Why not try ROT13?

  • *@F DA:? >6 C:89E C@F?5 323J C:89E C@F?5 Wcf E:>6DX

This has some rotated characters - Let's try all the ROT algorithms, and ROT47 seems to be the right one !

  • . .-.. . -.-. — — — — ..- -. .. -.-. .- — .. — — -.

. -. -.-. — — -.. .. -. — .

Definitely a Morse Code, using cyberchef we can decode morse code into plain text

  • 85 110 112 97 99 107 32 116 104 105 115 32 66 67 68

Seems to be like a hex but its not - Doesn't contain any alphabets, so what is it ? It's UNICODE Points, The pair of digits represents alphabets.

  • ………….LS0tLS0gLS0tLS0gLi0tLS0gLi0tLS0KLS0tLS0gLi0tLS0gLi0tLS0gLS0tLS0gLS0tLS0gLi0tLS0gLS0tLS0gLi0tLS0=

Due to the length of hash it looks like the hash is encoded a multiple times, Let's start with base64 decoding > gives us a morse code > decoding that gives us a binary > decoding the binary gives us unicode points > decrypting unicode points to plain text reveals us the flag !

  • --[+++++++>-->+>+>+<<<->---.>--..>+.<<<.+>->>.+++[.<]

This is possibly a complex hash known as BrainFuck encoding, inorder to decode this we can visit decode.fr website

Spectogram

  • Download the file. It is a .wav audio file

  • We can use an awesome online tool to use for analysing the spectrum embedded inside audio files

Stegnography

  • Download the file. It is a .jpg image

  • Here we are using another great online tool that decodes data that is hidden in a jpg,jpeg files

  • We can even use steghide and stegcracker / stegseek CLI tools to inspect jpg files

Security through obsurity

  • Download the file. It is yet again a .jpg file

  • We will use strings command to look inside the contents and display in human-readable format

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