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31 lines
1.1 KiB
Markdown
31 lines
1.1 KiB
Markdown
# 6.1.24 pwn HCTF2017 babyprintf
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- [题目复现](#题目复现)
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- [题目解析](#题目解析)
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- [漏洞利用](#漏洞利用)
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- [参考资料](#参考资料)
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[下载文件](../src/writeup/6.1.24_pwn_hctf2017_babyprintf)
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## 题目复现
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```
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$ file babyprintf
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babyprintf: 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]=5652f65b98094d8ab456eb0a54d37d9b09b4f3f6, stripped
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$ checksec -f babyprintf
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RELRO STACK CANARY NX PIE RPATH RUNPATH FORTIFY Fortified Fortifiable FILE
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Partial RELRO Canary found NX enabled No PIE No RPATH No RUNPATH Yes 1 2 babyprintf
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$ strings libc-2.24.so | grep "GNU C"
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GNU C Library (Ubuntu GLIBC 2.24-9ubuntu2.2) stable release version 2.24, by Roland McGrath et al.
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Compiled by GNU CC version 6.3.0 20170406.
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```
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64 位程序，开启了 canary 和 NX，默认开启 ASLR。
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## 题目解析
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## 漏洞利用
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## 参考资料
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- https://github.com/spineee/hctf/tree/master/2017/babyprintf
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