문제 바이너리의 보안설정을 확인할 수 있는 스크립트다.
http://www.trapkit.de/tools/checksec.html
tester@ubuntu:~$ file tiny_easy
tiny_easy: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, corrupted section header size
tester@ubuntu:~$ ./checksec.sh --file tiny_easy
RELRO STACK CANARY NX PIE RPATH RUNPATH FILE
No RELRO No canary found NX enabled No PIE No RPATH No RUNPATH tiny_easy이 외에 PEDA에서 'checksec' 명령어로도 확인이 가능하다.
https://github.com/longld/peda
tester@ubuntu:~$ gdb tiny_easy
GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from tiny_easy...(no debugging symbols found)...done.
gdb-peda$ checksec
CANARY : disabled
FORTIFY : disabled
NX : ENABLED
PIE : disabled
RELRO : disabled
gdb-peda$