hacker.org

Posted: **Tue Dec 11, 2012 11:15 pm**

I am taking part in a national cipher competition. Round two is timed and tomorrow so getting some practice in.

Probably far simpler than im making it out to be but im struggling with the 2011 round three code.

MjUxMUZDNkNCMEJCMjQzMUMwQjQzRDY3OTNEMENCQzENCjYyQ0MwQjRFQkIwQjU3QjQwNzc4MTc5MjM0MjQ2QzM4DQo4ODEyNjYyRENGM0U1REIwMjQ3QzBGODU5MDkzNjNGQw==

Seems base64y
So
2511FC6CB0BB2431C0B43D6793D0CBC162CC0B4EBB0B57B40778179234246C388812662DCF3E5DB0247C0F85909363FC

Hex.

Where now? Can't see any patterns.

Any help would be awesome

Thanks

Payne

Posted: **Wed Dec 12, 2012 4:08 pm**

Just a quick thing to note is that when decoded from base64 it gives 3 lines, each consisting of what appears to be 32nybbles:

Code: Select all

2511FC6CB0BB2431C0B43D6793D0CBC1
62CC0B4EBB0B57B40778179234246C38
8812662DCF3E5DB0247C0F85909363FC

That makes me think they are hashes - a quick lookup reveals that they are MD5s of "following" "your" "dream", which I suspect is the intended message.

Posted: **Wed Dec 12, 2012 6:47 pm**

Thanks! Id completely missed the new lines. Pretty sure that'll be it. If not its a massive coincidence.

Round two turned out to be pretty simple. Just base64 and a substitution cipher.

If round three involves md5's if ever we are in the same city I owe you a pint!

Payne

hacker.org

A code in need of breaking

A code in need of breaking

That Looks Like it!