# 4️⃣ Extract flag from the hidden PNG LSBs (StegSolve alternative using python) python3 - <<'PY' from PIL import Image import sys img = Image.open('work/.hidden') # read LSB of red channel across the whole image bits = [] for y in range(img.height): for x in range(img.width): r, g, b = img.getpixel((x, y)) bits.append(r & 1) # group bits into bytes msg = ''.join(str(b) for b in bits) bytes_ = [int(msg[i:i+8], 2) for i in range(0, len(msg), 8)] out = ''.join(chr(b) for b in bytes_ if 32 <= b < 127) print(out.strip()) PY
: Produced largely by Top Dawg Entertainment’s in-house team (Digi+Phonics), it features a jazzy, atmospheric sound that stood in stark contrast to the EDM-heavy rap hits of 2011. Defining Tracks : section 80 zip download
| # | Section | Description | |---|---------|-------------| | 1 | Overview | What the challenge looked like | | 2 | Initial Recon | How we discovered the zip file | | 3 | Downloading the ZIP | Dealing with the “download” endpoint | | 4 | ZIP analysis | Unpacking, metadata, and hidden content | | 5 | Cracking the password | Brute‑force, word‑list, and smart tricks | | 6 | Inside the archive | Files, steganography, and the flag | | 7 | Full solution script | One‑liner to reproduce the steps | | 8 | Lessons learned | Take‑aways for similar challenges | # 4️⃣ Extract flag from the hidden PNG
Below is a Bash script that automates the entire exploitation chain (login → token → zip download → password → flag extraction). b = img.getpixel((x
$ unzip -P tax_2022 section80.zip Archive: section80.zip inflating: README.txt inflating: data.bin inflating: .hidden
Using , I clicked the button and captured the outgoing request: