BronoCTF Puzzle Solved by Decoding Binary Hidden in A-H Text File

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A BronoCTF challenge presented participants with a file named aha.txt containing rows of space-separated eight-character strings made up of only the letters A and H. The two-symbol, fixed-width format strongly suggested a binary encoding, where each eight-character group represented one ASCII byte. Solvers mapped A to 0 and H to 1, then converted each group from binary to its corresponding ASCII character using a short Python script. This approach successfully decoded the ciphertext to reveal the flag bronco{UFUNNYLMAOLOLXDIJBOLROFLHAHA}. The challenge highlighted key pattern-recognition tips: alphabet size and fixed group width are reliable early indicators of the encoding scheme used.

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