Extract png from binary file.

README.md

Use python3.

python3 bin2png <binary> <destination>

# example -> python3 bin2png testbin .

bin2png

#!/usr/bin/env python

# extract embedded PNG files from binaries.

import sys, os, re, binascii

if len(sys.argv) != 3:
    print('Usage: ' + sys.argv[0] + ' <binary_file> <desination_dir>')
    print('<binary_file> - the binary containing embedded PNG images')
    print('<desination_dir> - the output directory where to save the images')
    sys.exit(1)

PNG_HEADER = '89504e47'
PNG_FOOTER = '49454e44ae426082'
file_path = sys.argv[1]
desination_dir = sys.argv[2]

bin = open(file_path, 'rb')
hex = binascii.hexlify(bin.read())
matches = re.findall(PNG_HEADER + "(.*?)" + PNG_FOOTER, hex.decode())

i = 0
for body in matches:
    i = i + 1
    png = PNG_HEADER + body + PNG_FOOTER
    png_raw = binascii.a2b_hex(png)
    fname = 'carved_' + str(i) + '.png'
    writer = open(os.path.join(desination_dir, fname), 'wb+')
    writer.write(png_raw)
    writer.close()
    print('Wrote ' + fname)

print('Done! Total extracted: ' + str(i))
bin.close()