README

Name: Matryoshka

Description

There's something more in the executable, isn't there?

Hint 1: It's and ELF inside and ELF.

Vulnerability

There is a global variable storing an ELF file. The participant will retrieve it, find out what the XOR key is by matching the ELF header, extract the ELF file and run it. The executable is stripped to make things a little bit difficult for the participant.

Exploit

Script in ./sol/exploit.py

Environment

Nothing special. The executable file is to be downloaded by the participant.

Deploy

Provide the executable file to the participant.