stegoPromedium

Composition

hackerlab.pro

Task: a DOCX file contains an ordinary essay and asks for a wrapped value in `CODEBY{...}`. Solution: enable visible formatting marks, read one paragraph break as 0 and two breaks as 1, group the resulting bits into bytes, and decode the binary text to recover the flag body.

binary_encoding text_steganography docx document_steganography paragraph_breaks formatting_marks

visible_formatting_mark_analysisparagraph_break_binary_decodingbinary_to_ascii_decoding

$ ls tags/ techniques/

binary_encoding text_steganography docx document_steganography paragraph_breaks formatting_marks

visible_formatting_mark_analysisparagraph_break_binary_decodingbinary_to_ascii_decoding

Analysis

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

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