stkof
Description
nc 54.64.45.35 3573

https://github.com/hitcon2014ctf/ctf/raw/master/a679df07a8f3a8d590febad45336d031-stkof

Hint
System Information:
Hardware: EC2 r3.2xlarge
Environment: default Ubuntu 14.04 x64

BTW, also the EC2 server is strong, we still set alarm and cgroup memory to prevent DoS attack. Don't be surprised if your connection be closed unexceptedly.