mantis

bug-makers

Task: a ~459 KB file reported as 'data' that is actually a PNG with both its head (signature + IHDR start) and tail (final IDAT + IEND) eaten away. Solution: recognize raw IDAT data, brute-force width/height against the preserved IHDR CRC32 (800x800), rebuild signature+IHDR, stream-decompress the truncated zlib IDAT, pad missing scanlines, and reassemble a valid PNG to render the flag drawn on a praying mantis.