# 6.1.18 pwn HITBCTF2017 Sentosa

- [题目复现](#题目复现)
- [题目解析](#题目解析)
- [Exploit](#exploit)
- [参考资料](#参考资料)


[下载文件](../src/writeup/6.1.18_pwn_hitbctf2017_sentosa)

## 题目复现
```
$ file sentosa                   
sentosa: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.32, BuildID[sha1]=556ed41f51d01b6a345af2ffc2a135f7f8972a5f, stripped
$ checksec -f sentosa 
RELRO           STACK CANARY      NX            PIE             RPATH      RUNPATH      FORTIFY Fortified Fortifiable  FILE
Full RELRO      Canary found      NX enabled    PIE enabled     No RPATH   No RUNPATH   Yes     1               3       sentosa
$ strings libc.so.6| grep "GNU C"
GNU C Library (Ubuntu GLIBC 2.23-0ubuntu4) stable release version 2.23, by Roland McGrath et al.
Compiled by GNU CC version 5.4.0 20160609.
```


## 题目解析

## Exploit

## 参考资料
- https://ctftime.org/task/4460