23 lines
489 B
Python
Executable File
23 lines
489 B
Python
Executable File
#!/home/maxime/.pyvenv/bin/python3
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with open("encoded.bmp", 'rb') as f:
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img = f.read()
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buffer_zone = 732
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flag_size = 50
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enc_size = flag_size * 9
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enc_buffer = img[buffer_zone:buffer_zone + enc_size]
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flag_buffer = [''] * flag_size
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for i in range(flag_size):
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enc_offset = i * 9
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char = 0
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for j in range(8):
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char |= (enc_buffer[enc_offset+j] & 1) << j
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flag_buffer[i] = chr(char)
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print(''.join(flag_buffer))
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