6.1.31 pwn HITBCTF2018 mutepig

• 题目复现

• 题目解析

• 漏洞利用

• 参考资料

下载文件

题目复现

$ file mutepig
mutepig: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.32, BuildID[sha1]=180b126011ab0d74ab49d0c3c52a41e85155a6a9, stripped
[firmy@firmy-pc mutepip]$ checksec -f mutepig
RELRO           STACK CANARY      NX            PIE             RPATH      RUNPATH      FORTIFY Fortified Fortifiable  FILE
Partial RELRO   Canary found      NX enabled    No PIE          No RPATH   No RUNPATH   Yes     0               1       mutepig
$ strings libc-2.23.so | grep "GNU C"
GNU C Library (GNU libc) stable release version 2.23, by Roland McGrath et al.
Compiled by GNU CC version 8.1.0.

64 位程序，开启了 Canary 和 NX。

题目解析

漏洞利用

参考资料

• https://www.xctf.org.cn/library/details/hitb-quals-2018/#mutepig-pwn