1024 razbitykh nadezhd (1024 Broken Hopes)

Platform: hackerlab | Category: Misc | Type: Challenge | Difficulty: Medium | OS: Linux | Author: XESXOR | Date: 2025-12-26 | Status: Solved Techniques: grid_calculation, image_tile_assembly

Summary

Task: reconstruct an image from 1024 JPEG tile fragments. Solution: arrange the 1024 sequentially numbered 60x34 tiles into a 32x32 grid using PIL to reveal the flag written in the assembled image.

1024 razbitykh nadezhd (1024 Broken Hopes) - Hackerlab

Opisanie (Description)

"Nadezhdy nesut v sebe nekiy svet, dazhe esli oni razbity vdrebezgi" (Hopes carry some light, even if they are shattered to pieces)

Files: parts.zip

Analiz (Analysis)

1. Extracted parts.zip - contains 1024 JPEG files named output_000.jpg through output_1023.jpg
2. Each image is 60x34 pixels - clearly tiles of a larger image
3. 1024 = 32 x 32, so the grid is 32x32 tiles
4. Final image dimensions: 32 * 60 = 1920 pixels wide, 32 * 34 = 1088 pixels tall ‍​‌‌​​‌​​​‌‌​​‌​​​​‌‌​‌​​​​‌‌‌​​‌​​‌‌​​​‌​​‌‌‌​​​​​‌‌​‌‌​​​‌‌​​​​‍

Key insight from task name: "1024 broken hopes" directly hints at 1024 pieces that need to be reassembled.

Key insight from description: "light" (svet) appears as street lamps in the final assembled image.

Reshenie (Solution)

Assembled all tiles in numerical order into a single image:

 python read-only • copy allowed Copy
#!/usr/bin/env python3
from PIL import Image
import os

# Grid parameters
grid_size = 32  # 32x32 = 1024 tiles
tile_width = 60
tile_height = 34

# Create output image
output_image = Image.new('RGB', (grid_size * tile_width, grid_size * tile_height))
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# Assemble tiles in order
for i in range(1024):
    filename = f"output_{i:03d}.jpg"
    tile = Image.open(filename)
    row = i // grid_size
    col = i % grid_size
    output_image.paste(tile, (col * tile_width, row * tile_height))

output_image.save('assembled.png')
print(f"Assembled image saved: {grid_size * tile_width}x{grid_size * tile_height} pixels")

The assembled image shows a night scene with street lamps (representing "light" from the description) with the flag written diagonally across it. ‍​‌‌​​‌​​​‌‌​​‌​​​​‌‌​‌​​​​‌‌‌​​‌​​‌‌​​​‌​​‌‌‌​​​​​‌‌​‌‌​​​‌‌​​​​‍

Klyuchevye indikatory (Key Indicators)

Use this technique when:

• Task provides many small image files with sequential numbering
• File count is a perfect square (1024 = 32^2, 256 = 16^2, etc.)
• All images have identical dimensions
• Task name or description hints at "broken", "pieces", "shattered", "puzzle"
• Description contains metaphorical hints about the final image content

Poleznyye komandy (Useful Commands)

 bash read-only • copy allowed Copy
# Check number of files
ls -1 *.jpg | wc -l

# Check image dimensions
identify output_000.jpg
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# Quick assembly with ImageMagick (alternative)
montage output_*.jpg -tile 32x32 -geometry 60x34+0+0 assembled.png

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