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
Answer: lets try some binary out!
3. MJQXGZJTGIQGS4ZAON2XAZLSEBRW63LNN5XCA2LOEBBVIRRHOM======
Answer: base32 is super common in CTF's
4. RWFjaCBCYXNlNjQgZGlnaXQgcmVwcmVzZW50cyBleGFjdGx5IDYgYml0cyBvZiBkYXRhLg==
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
Answer: hexadecimal or base16?
6. Ebgngr zr 13 cynprf!
Answer: Rotate me 13 places!
7. *@F DA:? >6 C:89E C@F?5 323J C:89E C@F?5 Wcf E:>6DX
Answer: You spin me right round baby right round (47 times)
8. - . .-.. . -.-. --- -- -- ..- -. .. -.-. .- - .. --- -.
. -. -.-. --- -.. .. -. --.
Answer: TELECOMMUNICATION ENCODING
9. 85 110 112 97 99 107 32 116 104 105 115 32 66 67 68
Answer: Unpack this BCD
10. Challange 10 (To long to copy)
Let's make this a bit trickier...
[Task 2] Hashing
Tools:
1. 39d4a2ba07e44421c9bedd54dc4e1182
Decode using md5hasing.net (Online Tools)
Output:
Answer: MDwhat?
2. e0418e7c6c2f630c71b2acabbcf8a2fb
Answer: digest the message algorithm
3. e0418e7c6c2f630c71b2acabbcf8a2fb
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.
[md5hashing](https://md5hashing.net/hash/sha512
Answer: 1024 bit blocks!
6. d48a2f790f7294a4ecbac10b99a1a4271cdc67fff7246a314297f2bca2aaa71f
Answer: Commonly used in Blockchain
7. a34e50c78f67d3ec5d0479cde1406c6f82ff6cd0
Answer: The OG
[Task 3] Spectogram
Challenge give us an audio. Secretaudio.wav. I decide to use Audacity. Spectogram. Ta-Da!
Answer: Super Secret Message
[Task 4] Steganography
We try online tools to decode it. Steganographic Decoder
OR
steghide extract -sf stegosteg.jpg
cat stegosteg.jpg
Answer: SpaghettiSteg
[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
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.jpgAnd there is an archive file. Extract and strings the image.
Ps: I no need to Binwalk it.
Answer: AHH_YOU_FOUND_ME!
By AdaniKamal
Last updated