Rating: 4.0

TL;DR - turn the binary sequence into a QR code by mapping 0&1 to black&white

```python
from PIL import Image
import numpy as np

# Target string goes here
obfuscated = ''

# The obfuscated text is 1681 characters long
# 1681 = 41x41, we can probably arrange it in a 41x41 image
WIDTH = 41
HEIGHT = 41

image_pixels = np.zeros([41,41])

for line_nr in range(41):
start = line_nr * WIDTH
stop = (line_nr+1) * WIDTH
line = obfuscated[start:stop]
for pixel_nr, pixel in enumerate(line):
if pixel == '1':
image_pixels[line_nr][pixel_nr] = 255
elif pixel == '0':
image_pixels[line_nr][pixel_nr] = 0

img = Image.fromarray(image_pixels.astype('uint8'))
img.save('result.png')
```

Original writeup (https://cristi075.github.io/TenableCTF-2023-Cyberpunk-Cafe).