$ cat writeup.md…
$ cat writeup.md…
hackerlab
Task: a PNG image contains a QR code rendered with circular dots, split into 4 quadrants and rearranged (one quadrant rotated 180°). Solution: identify cut lines between finder patterns, rearrange quadrants to restore valid QR layout, decode to get base64-encoded password-protected ZIP, crack with john to extract flag.
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