stegomedium

Rainbow QR (3bdf7da0-991d-46bf-aa92-e4dcd4ef692f)

hackerlab

Task: Two rainbow gradient images (rainbow1.jpg, rainbow2.jpg) of identical dimensions. Solution: Compute absolute pixel difference between images, apply threshold binarization, use morphological operations (dilation/erosion) to clean up noise, then decode the hidden QR code.

$ ls tags/ techniques/

image_difference qr_code xor_steganography morphological_operations opencv threshold_binarization pixel_comparison noise_removal

Image difference analysis (pixel-by-pixel comparison)Threshold binarization to extract hidden patternMorphological operations (dilation/erosion) for noise removalQR code detection and decoding

Analysis

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

🔒

Permission denied (requires tier.pro)

Sign in to access full writeups

Create a free account with GitHub, then upgrade to Pro.

$ssh [email protected]