02 - col

The Challenge

Daddy told me about cool MD5 hash collision today.

I wanna do something like that too!

ssh [e-mail] -p2222 (pw:guest)

The Solution

The program expects one argument with a length of 20.

• The 20 byte string input is converted to 5 integers (4 byte int * 5 = 20).

• The sum of these numbers should equal to 0x21DD09EC.

Concatenate 0x01010101 four times and 0xE805D91D [notice the input is little endianed] to gain access.