Create a bitmap file which can be used as a cmd/batch file

bitchmap.py

#!/usr/bin/python3
#
#Based on: https://www.thelacunablog.com/open-command-prompt-ms-paint.html

import struct
from PIL import Image

def imagegen(s, path):
	# Fix header
	s = '\x00\x00\x0a\x0d\x0a\x0d' + s
	# Blocksize
	bs = 3
	# Calc padding
	padnr = bs - (len(s) % bs)
	# Pad
	s = s + ('\x00' * padnr)
	# Create equal size blocks
	p = [s[i:i+bs] for i in range(0, len(s), bs)]
	# Transform block items from string to bytes (RGB)
	p = [struct.unpack('bbb', i[::-1]) for i in p]
	
	# Create new image
	img = Image.new('RGB', (len(p),1))
	pixels = img.load()
	# Walk the coordinates
	for x in range(img.size[0]):
		for y in range(img.size[1]):
			# Set the pixels to the ones we created in blocks
			pixels[x,y] = p[x]

	filename = '{0}.bmp'.format(path)
	print(filename)
	img.save(filename)


imagegen('powershell -command "gci"', '/tmp/data/file3')