basic file exploit(100 points)— Binary Exploitation writeup | Pico CTF 2022

Basic File Exploit — Binary Exploitation Challenge by PicoCTF 2022 | Approach by Karthikeyan Nagaraj

Description:

• The program provided allows you to write to a file and read what you wrote from it.
• Try playing around with it and see if you can break it!
• Connect to the program with netcat:
  nc saturn.picoctf.net 55825

Tool Used — Netcat

Task File:

https://artifacts.picoctf.net/c/542/program-redacted.c

Analysis:

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <stdint.h>
#include <ctype.h>
#include <unistd.h>
#include <sys/time.h>
#include <sys/types.h> …

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