Our large hadron collider feeds off files that produces the same SHA1 hashsum value. Could you help us power up our collider? We will give you a flag in return! Our collider can be found at http://220.127.116.11:8081/
Recently, a team from Google published a paper on how SHA1 is no longer secure, and collisions can be easily generated.
First, we tried using the example PDF files from here. But we got this message.
I guess it’s not as simple as just downloading files from a website, or another team has submitted these files. After doing some research on Google, we found this tool.
By choosing 2 random images we found, we easily generated our PDF files with the same SHA1 hashsum value.