23 - Exploit Me :p - 200 pts

Description
Category: pwnables

It seems like AED also has some plans to raise hacker force!
We found this binary as an exploitation practice program in the office, but they forgot to remove the setgid flag on the program.
So we can get the secret key!

ssh exp_16@a5.amalgamated.biz # DtTFiA0LMP3820GBKsB04871