c4ptur3-th3-fl4g

[Task 1] Translation & Shifting

I will be using only Cyberchef

1. c4n y0u c4p7u23 7h3 f149?

Answer: can you capture the flag

2. 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

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Answer: lets try some binary out!

3. MJQXGZJTGIQGS4ZAON2XAZLSEBRW63LNN5XCA2LOEBBVIRRHOM======

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Answer: base32 is super common in CTF's

4. RWFjaCBCYXNlNjQgZGlnaXQgcmVwcmVzZW50cyBleGFjdGx5IDYgYml0cyBvZiBkYXRhLg==

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Answer: Each Base64 digit represents exactly 6 bits of data.

5. 68 65 78 61 64 65 63 69 6d 61 6c 20 6f 72 20 62 61 73 65 31 36 3f

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Answer: hexadecimal or base16?

6. Ebgngr zr 13 cynprf!

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Answer: Rotate me 13 places!

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

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Answer: You spin me right round baby right round (47 times)

8. - . .-.. . -.-. --- -- -- ..- -. .. -.-. .- - .. --- -.

. -. -.-. --- -.. .. -. --.

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Answer: TELECOMMUNICATION ENCODING

9. 85 110 112 97 99 107 32 116 104 105 115 32 66 67 68

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Answer: Unpack this BCD

10. Challange 10 (To long to copy)

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Let's make this a bit trickier...

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[Task 2] Hashing

Tools:

• Hash Analyzer

• md5hasing.net

1. 39d4a2ba07e44421c9bedd54dc4e1182

Decode using md5hasing.net (Online Tools)

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Output:

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Answer: MDwhat?

2. e0418e7c6c2f630c71b2acabbcf8a2fb

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Answer: digest the message algorithm

3. e0418e7c6c2f630c71b2acabbcf8a2fb

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Answer: 128-bit of delicious hash values

4. 11FE61CE0639AC2A1E815D62D7DEEC53

Based on hint given it is, “SoftMicro”. Which refer to Microsoft NTLM Hashes.

Answer: Microsoft has encryption?

5. a361f05487b879f25cc4d7d7fae3c7442e7849ed15c94010b389faafaf8763f0dd022e52364027283d55dcb10974b09e7937f901584c092da65a14d1aa8dc4d8

Check the hash.

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[md5hashing](https://md5hashing.net/hash/sha512

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Answer: 1024 bit blocks!

6. d48a2f790f7294a4ecbac10b99a1a4271cdc67fff7246a314297f2bca2aaa71f

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Answer: Commonly used in Blockchain

7. a34e50c78f67d3ec5d0479cde1406c6f82ff6cd0

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Answer: The OG

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[Task 3] Spectogram

Challenge give us an audio. Secretaudio.wav. I decide to use Audacity. Spectogram. Ta-Da!

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Answer: Super Secret Message

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[Task 4] Steganography

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We try online tools to decode it. Steganographic Decoder

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OR

steghide extract -sf stegosteg.jpg

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cat stegosteg.jpg

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Answer: SpaghettiSteg

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[Task 5] Security through obscurity

1. Download and get 'inside' the file. What is the first filename & extension?

Given a png file. I strings the file. And get this

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Answer: hackerchat.png

2. Get inside the archive and inspect the file carefully. Find the hidden text.

It say to go inside the archive.

binwalk -e meme.jpg

And there is an archive file. Extract and strings the image.

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Ps: I no need to Binwalk it.

Answer: AHH_YOU_FOUND_ME!

By AdaniKamal