Shellcode 2 binary script that reads C-formatted array from clipboard and converts it to binary output written to desired file.

shellc2bin.py

#!/usr/bin/python

# This script converts shellcode's C-char array with hex
# values to ASCII-HEX binary file with shellcode inserted in it.
# ASCII-HEX values can be read either from file (if specified
# in first param) or from Win32 clipboard (if on win32 platform)

import sys
import random
import struct
if sys.platform == 'win32':
	import ctypes

data = ""	

if len(sys.argv) == 2:
	try:
		f = open(sys.argv[1])
		data = f.read()
		f.close()
	except:
		print "[!] You must specify file name with shellcode data!"
		exit(1)
else:
	# file not specified, try to read win32 clipboard
	try:
		if sys.platform == 'win32':
			user = ctypes.windll.LoadLibrary("user32.dll")
			if user.OpenClipboard(0):
				handle = user.GetClipboardData( 1)	# CF_TEXT
				if handle:
					kernel = ctypes.windll.kernel32
					addr = kernel.GlobalLock( handle)
					data = ctypes.c_char_p(addr).value

					print "[+] Data read from clipboard. Len:",\
							len(data)
					kernel.GlobalUnlock( addr)
				else:
					print "[!] GetClipboardData() failed:", \
							kernel.GetLastError()
					exit(1)
			else:
				print "[!] OpenClipboard() failed:", \
							kernel.GetLastError()
				exit(1)
		else:
			print "[?] You must specify as a first param file name"\
					" with shellcode"
			exit(1)
	except:
		print "[!] Clipboard reading FAILED !"
		exit(1)

data = data.replace(" ", "")
data = data.replace('"', "")
data = data.replace(";", "")
data = data.replace(r"\x", "")
data = data.replace("\x0a", "")
data = data.replace("\x0d", "")
data = ''.join(data)

try:
	g = open("shellcode.bin", 'wb')
except:
	r = random.randint(1,1000)
	g = open("shellcode%d.bin" % r, 'wb')

if not g:
	print "[!] Cannot create file to write into!"
	exit(1)

for i in range(0, len(data), 2):
	a = struct.pack("B", int(data[i:i+2],16))
	g.write(a)

g.close()

print "[+] Shellcode file created succesfully."