Tommy Wu TommyWu-fdgkhdkgh

This is a follow up of the previous post, how to calculate IP/TCP/UDP checksum part 1 — theory.

IP Header Checksum Calculation Implementation

To calculate the IP checksum, one can use the code below,

	MODULENAME := vpoll
	obj-m += $(MODULENAME).o
	$(MODULENAME)-y += module.o

	KERNELDIR ?= /lib/modules/`uname -r`/build
	PWD := $(shell pwd)

	all:
	$(MAKE) -C $(KERNELDIR) M=$(PWD) modules
	gcc -Wall -o user user.c

	#include <linux/module.h>

	#include <linux/skbuff.h>
	#include <net/cfg80211.h>

	#include <linux/mutex.h>
	#include <linux/workqueue.h>

	#define WIPHY_NAME "owl" /* Our WireLess */
	#define NDEV_NAME WIPHY_NAME "%d"

	/* simrupt: A device that simulates interrupts */

	#include <linux/cdev.h>
	#include <linux/circ_buf.h>
	#include <linux/init.h>
	#include <linux/interrupt.h>
	#include <linux/kfifo.h>
	#include <linux/module.h>
	#include <linux/slab.h>
	#include <linux/workqueue.h>

	#include <windows.h>
	#include <stdio.h>


	FARPROC fpCreateProcessW;
	BYTE bSavedByte;

	// Blog Post Here:
	// https://0x00sec.org/t/user-mode-rootkits-iat-and-inline-hooking/1108
	// tasklist \| findstr explore.exe

	/*
	* Server.cpp
	*
	* EventServer is a simple C++ TCP socket server implementation,
	* to serve as an example to anyone who wants to learn it.
	* It can interface with the rest of your program using three callback functions.
	* - onConnect, which fires when a new client connects. the client's fd is passed.
	* - onDisconnect, which fires when a client disconnects. passes fd.
	* - onInput, fires when input is received from a client. passes fd and char*
	*

	#define WIN32_LEAN_AND_MEAN
	#include "windows.h"

	#pragma warning(push)
	#pragma warning(disable : 4091)
	#include "DbgHelp.h"
	#pragma comment(lib, "DbgHelp.lib")
	#pragma warning(pop)

	void printStack(void)

	%253Cscript%253Ealert('XSS')%253C%252Fscript%253E
	<IMG SRC=x onload="alert(String.fromCharCode(88,83,83))">
	<IMG SRC=x onafterprint="alert(String.fromCharCode(88,83,83))">
	<IMG SRC=x onbeforeprint="alert(String.fromCharCode(88,83,83))">
	<IMG SRC=x onbeforeunload="alert(String.fromCharCode(88,83,83))">
	<IMG SRC=x onerror="alert(String.fromCharCode(88,83,83))">
	<IMG SRC=x onhashchange="alert(String.fromCharCode(88,83,83))">
	<IMG SRC=x onload="alert(String.fromCharCode(88,83,83))">
	<IMG SRC=x onmessage="alert(String.fromCharCode(88,83,83))">
	<IMG SRC=x ononline="alert(String.fromCharCode(88,83,83))">

	/*
	* fork.c
	* Experimental fork() on Windows. Requires NT 6 subsystem or
	* newer.
	*
	* Copyright (c) 2012 William Pitcock <nenolod@dereferenced.org>
	*
	* Permission to use, copy, modify, and/or distribute this software for any
	* purpose with or without fee is hereby granted, provided that the above
	* copyright notice and this permission notice appear in all copies.

	package com.enginebai.sample;

	import android.content.Context;
	import android.location.Location;
	import android.location.LocationListener;
	import android.location.LocationManager;
	import android.os.Bundle;
	import android.support.design.widget.FloatingActionButton;
	import android.support.design.widget.Snackbar;
	import android.support.v7.app.AppCompatActivity;