Zipper - CTF 61
CTF Name: Zipper
Topic: General Skill
Flag Format: IHC_CTF{}
CTF Link: https://t.me/ctf_invisiblehc/102
Description:
Download the zip file. Extract it. You will get 16 more zip file. One zip contains flag.
Solution:
After we unzipped the first file, we found 16 more zip files inside. All the files were the same size, except for Zip file 11 which was larger.
After extracting it, we got a "flag.txt" file. Opening it, we saw 0 width invisible characters. After decoding with this online tool:
https://www.irongeek.com/i.php?page=security/unicode-steganography-homoglyph-encoder
After decrypt we found the flag.
flag: IHC_CTF{1NV151B13_F14G_61}
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