callumbeaney / extractor Goto Github PK
View Code? Open in Web Editor NEWDownloads JPEGs in a cloud directory from their URLs.
Downloads JPEGs in a cloud directory from their URLs.
This is a rudimentary JPEG extractor program I wrote, purely as an academic exercise to test how securely stored some NFT objects were. It accessed files in a cloud storage directory hosting the objects linked to by NFT tokens for a historically significant artist's digitized archive. I discovered that the cloud storage was insecure and could be accessed by anyone able to figure out the link to the full-resolution file directory (even after the tokens were removed from the public marketplace for unknown reasons). Because each file was named from e.g. 1.jpg โ 12345.jpg due to injudicious archival handling/filenaming, the whole 10000+ images could be downloaded to a local disk in under an hour. After successfully executing the program and downloading 200+ files in sequence, I deleted them from my harddrive permanently and shelved this program. Due to issues with linking the cURL library on VSCODE, and working on a short timeframe, I decided to try using the system(wget) command.
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