Blood Of Circuits – Writeup

Hi fellow hackers, welcome to my first writeup!

In this challenge, you are provided with a .pdsprj file, which is used to design circuits.

Challenge Overview

The goal of the challenge is to manipulate the digital logic circuit so that the output changes from 0 to 1. To achieve this, you need to:

1. Open the .pdsprj file using Proteus Software.
2. Examine the circuit, which contains several digital logic gates.
3. Understand the basic operations of each logic gate (AND, OR, NOT, XOR, etc.).
4. Adjust or fix the logic gates so that the output becomes 1.

Extracting the Flag

Once the logic gates are corrected and the output is 1, the circuit will produce a series of binary numbers.

1. Convert these binary numbers to ASCII characters.
2. Carefully double-check the binary bits to ensure the conversion is accurate.
3. The resulting text is the flag for the challenge.