![[pwnable.kr] fd(1 pt) :: Write-Up 포스팅 썸네일 이미지](https://img1.daumcdn.net/thumb/R750x0/?scode=mtistory2&fname=https%3A%2F%2Fblog.kakaocdn.net%2Fdna%2FcxjFbx%2FbtqzCNN00Dt%2FAAAAAAAAAAAAAAAAAAAAACr4BGVId1JEwvb_D5IOOAjOFYhebWm8pBMx36TN6pEk%2Fimg.png%3Fcredential%3DyqXZFxpELC7KVnFOS48ylbz2pIh7yKj8%26expires%3D1753973999%26allow_ip%3D%26allow_referer%3D%26signature%3DzuoDrvkzm%252FXbHzN%252BLX5bqialHXM%253D)
War Games/pwnable.kr
[pwnable.kr] fd(1 pt) :: Write-Up
Mommy! what is a file descriptor in Linux? - try to play the wargame your self but if you are ABSOLUTE beginner, follow this tutorial link: https://youtu.be/971eZhMHQQw ssh fd@pwnable.kr -p2222 (pw:guest) fd@prowl:~$ ls fd fd.c flag fd@prowl:~$ cat flag cat: flag: Permission denied fd, fd.c, flag파일이 있네요. 보아하니 flag파일이 있는데 당연히도 권한이 없구요. 그래서 fd.c파일을 열어보았습니다. fd@prowl:~$ nl fd.c 1 #include 2 #includ..