binary to shellcode
ssooking Lv5
  2020-01-26 14:34:00 2020-01-26 14:34    

从二进制文件中转储shellcode的Tips：

  • hexdump command
  • python scripts

hexdump

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hexdump -v -e '"\\""x" 1/1 "%02x" ""' filename

python

bin2shellcode.py

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @ Author: ssooking
# @ Blog  : https://ssooking.github.io
# @ Github: https://github.com/ssooking

import sys

def bin2shellcode(binfile):
	binary = open(binfile,'rb')
	for byte in binary.read():
		sys.stdout.write("\\x"+byte.encode("hex"))
	print ""

if __name__ == "__main__":
	if len(sys.argv) < 2:
		print "\nUsage: python bin2shellcode.py filename\n"
		sys.exit(0)
	bin2shellcode(sys.argv[1])

bin2shellcode2.py

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#!/usr/bin/env python
# -*- coding: utf-8 -*-

import sys
if __name__ == "__main__":
	if len(sys.argv) < 2:
		print "usage: %s file.bin\n" % (sys.argv[0],)
		sys.exit(0)

	shellcode = "\""
	ctr = 1
	maxlen = 15

	for b in open(sys.argv[1], "rb").read():
		shellcode += "\\x" + b.encode("hex")
		if ctr == maxlen:
			shellcode += "\" +\n\""
			ctr = 0
		ctr += 1
	shellcode += "\""
	print shellcode

Reference

  • Post title：binary to shellcode
  • Post author：ssooking
  • Create time：2020-01-26 14:34:00
  • Post link：https://ssooking.github.io/2020/01/binary-to-shellcode/
  • Copyright Notice：All articles in this blog are licensed under BY-NC-SA unless stating additionally.