flag

This is a writeup of reverse engineering challenge from pwnable.kr called “flag”.

I used Radare2 to solve this challenge, so let’s get started.

r2 ./flag    //Let's go through the file first
DON'T forget to change the permissions of the file using chmod.

Now, let’s analyze the file and see what functions are there,

Also let’s see the strings that this binary file contains:

azz //This is the command to view strings
or
azz ~.. //This basically using less to that …

binary called challenge change cybersecurity engineering file flag functions permissions pwn pwnablekr-writeup radare2 reverse reverse engineering strings using writeup