Dev.to
7/12/2026

BronoCTF : LEts a GO Writeup
Short summary
A detailed writeup of the BronoCTF 'LEts a GO' forensics challenge. The challenge hides a flag across 50 fragmented .part_NN files buried among ~280 decoy files in a zip archive. A hidden .solver.py script reveals the concatenation logic, and the author reimplements it in clean Python to extract the flag bronco{3ve4yth1ng_1s_aw3s0me}.
- •CTF forensics challenge with 333-file zip archive full of decoys
- •Flag fragmented across 50 .part_NN files, found via size-sorting and hidden solver script
- •Author reimplements solver in clean Python to bypass encoding issues
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