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# !/usr/bin/env python3
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import UnityPy
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import numpy as np
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from PIL import Image
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import cv2
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env = UnityPy.load("Tuff_Game/Tuff_Game/Tuff_Game_Data/resources.assets")
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tiles = {}
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for obj in env.objects:
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    if obj.type.name == "Texture2D":
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        data = obj.read()
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        name = data.m_Name
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        if name.startswith("rq_"):
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            parts = name.split("_")
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            x, y = int(parts[1]), int(parts[2])
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            tiles[(x, y)] = np.array(data.image)
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print(f"[+] Loaded {len(tiles)} QR tiles")
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# Assemble with TRANSPOSED coordinates
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tile_size, grid_size = 5, 30
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img_size = grid_size * tile_size
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full_img = np.ones((img_size, img_size, 3), dtype=np.uint8) * 255
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for (orig_x, orig_y), tile_data in tiles.items():
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    new_col, new_row = orig_y, orig_x  # TRANSPOSED
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    py, px = new_row * tile_size, new_col * tile_size
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    full_img[py:py+tile_size, px:px+tile_size] = tile_data[:, :, :3]
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Image.fromarray(full_img).save("qr_transposed_raw.png")
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# Decode QR
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scale = 10
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upscaled = cv2.resize(full_img, (img_size * scale, img_size * scale), interpolation=cv2.INTER_NEAREST)
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gray = cv2.cvtColor(upscaled, cv2.COLOR_RGB2GRAY)
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detector = cv2.QRCodeDetector()
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data, bbox, straight = detector.detectAndDecode(gray)
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print(f"\n[★] FLAG: {data}")

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python3 solve_tuff_game.py

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[+] Loaded 900 QR tiles
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[+] Saved qr_transposed_raw.png (150×150)
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[★] FLAG: BITSCTF{Th1$_14_D3f1n1t3ly_Th3_fl4g}