Toddler(bluekat)

문제

 

Sometimes, pwnable is strange... hint: if this challenge is hard, you are a skilled player.

ssh blukat@pwnable.kr -p2222 (pw: guest)

 

풀이

 

blukat@ubuntu:~$ ls
blukat    blukat.c  password
blukat@ubuntu:~$ cat password
cat: password: Permission denied
blukat@ubuntu:~$

 

cat: password: Permission denied.....? 뭔가 이상합니다. 그대로 입력해볼까요?

blukat@ubuntu:~$ ./blukat
guess the password!
cat: password: Permission denied
congrats! here is your flag: Pl3as_DonT_Miss_youR_GrouP_Perm!!
blukat@ubuntu:~$

 

...???