Dump raw images from binaries (with headers)

extract_bmp.py

from pathlib import Path
import io
import sys


data = Path(sys.argv[1]).read_bytes()
l = len(data)
for index, b in enumerate(data):
    if (b == 0x42 and data[index+1] == 0x4D):
        x = int.from_bytes(data[index+2:index+6], byteorder="little", signed=False)
        if not (index + x > l):
            print("Found data at %02x" % index)
            with open("out/%x.bmp" % index, "wb") as binary_file:
                binary_file.write(data[index : index+x])

extract_jpg.py

from pathlib import Path
import io
import sys


data = Path(sys.argv[1]).read_bytes()
l = len(data)
for index, b in enumerate(data):
    if not (index == l-1):
        if (b == 0xFF and data[index+1] == 0xD8):
            end = data.find(b'\xff\xd9', index)
            if not (end == -1):
                print("Found data at %02x" % index)
                with open("out/%x.jpg" % index, "wb") as binary_file:
                    binary_file.write(data[index : end+2])

extract_png.py

from pathlib import Path
import io
import sys


data = Path(sys.argv[1]).read_bytes()
l = len(data)
for index, b in enumerate(data):
    if not (index == l-3):
        if (b == 0x89 and data[index+1] == 0x50 and data[index+2] == 0x4E and data[index+3] == 0x47):
            end = data.find(b'\x49\x45\x4E\x44\xAE\x42\x60\x82', index)
            if not (end == -1):
                print("Found data at %02x" % index)
                with open("out/%x.png" % index, "wb") as binary_file:
                    binary_file.write(data[index : end+8])