HOW TO BECOME A CERTIFIED ETHICAL HACKER

7 Tips to become a hacker?
It is very important for a hacker to learn different types of programming language such as C,C++,Python,Java,PHP etc and it is also necessary to learn hardware and networking for a good hacker because these skill are very useful to become a successful hacker.

1-Programming Language are essential to becoming a good hacker 

2-Networking skills is important to becoming an effective hacker.

3-SQL language are essential to becoming an effective hacker 

4-Internet surfing is also essential for becoming a hacker for gathering information.

5-Cryptography is essential to becoming a certified hacker from which a hacker can share his/her readable data to other person in a nonreadable form with the help of Cryptography.

6-Penetration testing  is also important for a hacker.

7-experiment a lot is also very useful to becoming a ethical hacker.

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Tricks To Bypass Device Control Protection Solutions

Preface

As I wrote in a previous blog post, I had an engagement last year where my task was to exfiltrate data from a workstation on some sort of storage media. The twist in that task was Lumension Sanctuary Device Control, and the version was 4.3.2, but I am not sure how newer version work and this seems to be a more general problem with device control solution, for example with Symantec products.

But what is a device control solution? In short, they audit I/O device use and block the attempts to use unauthorized devices. This includes hardware such as USB, PS/2, FireWire, CD/DVD so basically every I/O port of a computer. In my opinion, these are pretty good things and they offer a better looking solution than de-soldering the I/O ports from the motherboards or hot-gluing them, but on the other hand, they can be bypassed.

Bypass

OK, so what is the problem? Well the way these device control solutions work is that they load a few kernel drivers to monitor the physical ports of the machine. However... when you boot up the protected computer in safe mode, depending on the device control solution software, some of these drivers are not loaded (or if you are lucky, none of those modules will be loaded...) and this opens up the possibility to exfiltrate data.

In theory, if you have admin (SYSTEM maybe?) privileges, you might as well try to unload the kernel drivers. Just do not forget, that these device control solutions also have a watchdog process, that checks the driver and automatically loads it back if it is unloaded, so look for that process and stop or suspend it first.

In my case with the Lumension Sanctuary Device Control, I have found that when I boot the Workstation protected by the device control software in Safe Mode where, software's key logger protection module is not running... so I was still unable to use a USB stick, or a storage media, but I could plug in a keyboard for example...hmmm :)

As some of you probably already figured it out, now it is possible to use a pre-programmed USB HID, for example a Teensy! : ) I know about three different project, that uses this trick like these two mentioned in a Hackaday post, or this one. Unfortunately, the site ob-security.info no longer seems to be available (well, at least it is no longer related to infosec :D ), but you can still find the blog post and the files with the Wayback Machine.

For the hardware part, the wiring of the Teensy and the SD card adaptor is the same as I showed in the post on Making a USB flash drive HW Trojan or in the Binary deployment with VBScript, PowerShell or .Net csc.exe compiler post, so I will not copy it here again.

I have to note here that there are other ways to bypass these device control solutions, like the method what Dr. Phil Polstra did with the USB Impersonator, which is basically looks for an authorized device VID/PID and then  impersonates that devices with the VID/PID.

Mitigation

Most probably, you will not need safe mode for the users, so you can just disable it... I mean, it is not that easy, but luckily there is a great blog post on how to do that. BTW, the first page of the post is for Windows XP, but you are not using XP anymore, aren't you? ;)

Alternatively, as I mentioned at the beginning, you might as well use some physical countermeasure (de-soldering/hot-gluing ports). That shit is ugly, but it kinda works.

Conclusion

Next time you will face a device control solution, try out these tricks, maybe they will work, and if they do, well, that's a lot of fun. :)

But don't get me wrong, these device control solutions and similar countermeasures are a good thing and you should use something like this! I know that they make doing business a bit harder as you are not able to plugin whatever USB stick you want, but if you buy a pile of hardware encrypted flash drives, and only allow  those to be plugged in, you are doing it right ;)

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Linux Command Line Hackery Series - Part 5

Welcome back to the Linux Command Line Hackery series, this is Part-V of the series. Today we are going to learn how to monitor and control processes on our Linux box, so wrap your sleeves up and let's get started.

Command:    ps
Syntax:           ps [options]
Description:  ps displays information about the currently running processes. Some of the common flags of ps are described briefly below
Flags: 
  -A or -e -> select all processes
  -a -> select all processes except both session leaders and processes not associated with a terminal.
  T -> select all processes associated with current terminal
  -u <username or id> -> select all processes of a given user or userlist

Open up a terminal and type ps:

ps

what you'll see is a list of processes currently running in your terminal. One important thing to notice in the output is what's called as PID which stands for process ID. It is the number that uniquely identifies a process. Just keep that PID concept in mind we'll use it soon.

OK I know that's not really what you want to see rather you want to see all the processes that are currently running on your box. Don't worry we have flags to rescue, in order to see all the processes you can use the -e flag like this:

ps -e

Boom! you get a long list of processes currently running on your machine (don't stare at me like that, you asked and I gave you that). If you want to see processes of a particular user you can type the following command in your terminal:

ps -u bob

here "bob" is a username. This command will list all processes of the user with effective user name of bob.

You can do a full-format listing of the processes using the -f flag like this:

ps -fu bob

But the output of the ps command is a snapshot not really a live preview of what is going on in your box. I know your next question is going to be something like this, Isn't there a command in Linux that gives me a live updating information of the processes? Yes, there is a command called top that we'll learn about next.

Command:    top
Syntax:           top [options]
Description:  top gives a dynamic real-time view of a running system. That is, it gives the up-to-date information about all the processes running on your Linux box (sounds fun!). Besides giving information about current processes and threads top also provides a brief system summary.

To start top just type this command:

top

and you'll get a nice and cute looking ugly display :). Well what the heck is going on here you might ask, right? What you get is information about what is going on with your computer. To see what more can you do with top just type <h> within the program window and you'll be given list of options that you can play with.

OK looking at what processes are going on in your box is cool but what if you want to terminate (or close) a process, is there a command line utility for that? Yes, there is and that's what we are going to look at next.

Command:   kill
Syntax:          kill [options] <pid> [...]
Description:  kill is used to send a signal to process which by default is a TERM signal meaning kill by default sends a signal of termination to process (Cruel guy). To list the available signals we can use the -l or -L flag of the kill command.


To simply terminate a process we provide kill command a PID (process ID) and it will send the TERM signal to the process. So to kill a process first we'll list the running processes and then we'll keep the PID of the process in mind that we want to terminate. After that we'll issue the kill command with the PID that we just found.

ps -ax
kill 1153

the above command will send a TERM signal to the process whose PID is 1153, as simple as that.

We can also use our already learned skills to refine the output of ps command. Say we have a xterm terminal running on our box and we want to terminate it. By using ps command all alone we'll get a long listing of all processes running on our box. But we can limit the output of ps command to just those processes that we're interested in by piping ps command with the grep command like this:

ps -ax | grep xterm

wow! that's amazing, we're able to pull out only those results from the ps command that contained xterm in them. Isn't that a cool trick? But what is that vertical bar ( | ) doing in the middle, you may be thinking, right? Remember we learned about the input and output re-directors previously, the vertical bar (pipe in geeky terms) is another re-director whose task is to redirect the output of one command as input to another command. Here the pipe redirects the output of ps -ax command as input to grep command and of-course from the previous article you know that grep is used to search for a PATTERN in the given input. That means the above command searches for the xterm word in the output of ps -ax command and then displays just those lines of ps -ax command which contain xterm. Now get that PID and kill that process.

That's it for today, try these commands up on your own box and remember practice is gonna make you master the Linux command line. :)

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Linux Command Line Hackery Series: Part 2

Welcome back to Linux Command Line Hackery, yes this is Part 2 and today we are going to learn some new skills. Let's rock

Let us first recap what we did in Part 1, if you are not sure what the following commands do then you should read Part 1.

mkdir myfiles                                                # make a directory (folder) with myfiles as name
cd myfiles                                                      # navigate to myfiles folder
touch file1 file2 file3                                    # create three empty files file1, file2, file3
ls -l                                                                   # view contents of current directory
echo This is file1 > file1                               # write a line of text to file1
cat file1                                                           # display contents of file1
echo This is another line in file1 >> file1    # append another line of text to file1
cat file1                                                          # display the modified content of file1

Command:  cp
Syntax:        cp source1 [source2 ...] destination
Function:     cp stands for copy. cp is used to copy a file from source to destination. Some important flags are mentioned below
Flags:          -r copy directories recursively
                     -f if an existing destination file cannot be opened, remove it and try  again

Let us make a copy of file1 using the new cp command:

cp file1 file1.bak

what this command is going to do is simply copy file1 to another file named file1.bak. You can name the destination file anything you want.
Say, you have to copy file1 to a different folder maybe to home directory how can we do that? well we can do that like this:

cp file /home/user/

I've used the absolute path here you can use whatever you like.

[Trick: ~ has a special meaning, it stands for logged in user's directory. You could have written previous command simply as
cp file1 ~/
and it would have done the same thing.]

Now you want to create a new directory in myfiles directory with the name backup and store all files of myfiles directory in the backup directory. Let's try it:

mkdir backup
cp file1 file2 file3 backup/

this command will copy file1 file2 file3 to backup directory.
We can copy multiple files using cp by specifying the directory to which files must be copied at the end.
We can also copy whole directory and all files and sub-directories in a directory using cp. In order to make a backup copy of myfiles directory and all of it's contents we will type:

cd ..                                           # navigate to previous directory
cp -r myfiles myfiles.bak       # recursively copy all contents of myfiles directory to myfiles.bak directory

This command will copy myfiles directory to myfiles.bak directory including all files and sub-directories

Command: mv
Syntax:       mv source1 [source2 ...] destination
Function:    mv stands for move. It is used for moving files from one place to another (cut/paste in GUI) and also for renaming the files.

If we want to rename our file1 to  file1.old in our myfiles folder we'll do the follow:

cd myfiles                                      # navigate first to myfiles folder
mv file1 file1.old

this command will rename the file1 to file1.old (it really has got so old now). Now say we want to create a new file1 file in our myfiles folder and move the file1.old file to our backup folder:

mv file1.old backup/                    # move (cut/paste) the file1.old file to backup directory
touch file1                                    # create a new file called file1
echo New file1 here > file1         # echo some content into file1

Command:  rmdir
Syntax: rmdir directory_name
Function: rmdir stands for remove directory. It is used for removing empty directories.

Let's create an empty directory in our myfiles directory called 'garbage' and then remove it using rmdir:

mkdir garbage
rmdir  garbage

Good practice keep it doing. (*_*)
But wait a second, I said empty directory! does it mean I cannot delete a directory which has contents in it (files and sub-directories) with rmdir? Yes!, you cannot do that with rmdir. 
So how am I gonna do that, well keep reading...

Command:  rm
Syntax:        rm FILE...
Function:     rm stands for remove. It is used to remove files and directories. Some of it's important flags are enlisted below.
Flags:          -r remove directories and their contents recursively
                     -f ignore nonexistent files and arguments, never prompt

Now let's say we want to delete the file file1.old in backup folder. Here is how we will do that:

rm backup/file1.old                # using relative path here

Boom! the file is gone. Keep in mind one thing when using rm "IT IS DESTRUCTIVE!". No I'm not yelling at you, I'm just warning you that when you use rm to delete a file it doesn't go to Trash (or Recycle Bin). Rather it is deleted and you cannot get it back (unless you use some special tools quickly). So don't try this at home. I'm just kidding but yes try it cautiously otherwise you are going to loose something important.

Did You said that we can delete directory as well with rm? Yes!, I did. You can delete a directory and all of it's contents with rm by just typing:

rm -r directory_name

Maybe we want to delete backup directory from our myfiles directory, just do this:

rm -r backup

And it is gone now.
Remember what I said about rm, use it with cautious and use rm -r more cautiously (believe me it costs a lot). -r flag will remove not just the files in directory it will also remove any sub-directories in that directory and there respective contents as well.

That is it for this article. I've said that I'll make each article short so that It can be learned quickly and remembered for longer time. I don't wanna bore you.

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$$$ Bug Bounty $$$

What is Bug Bounty ?

A bug bounty program, also called a vulnerability rewards program (VRP), is a crowdsourcing initiative that rewards individuals for discovering and reporting software bugs. Bug bounty programs are often initiated to supplement internal code audits and penetration tests as part of an organization's vulnerability management strategy.




Many software vendors and websites run bug bounty programs, paying out cash rewards to software security researchers and white hat hackers who report software vulnerabilities that have the potential to be exploited. Bug reports must document enough information for for the organization offering the bounty to be able to reproduce the vulnerability. Typically, payment amounts are commensurate with the size of the organization, the difficulty in hacking the system and how much impact on users a bug might have.


Mozilla paid out a $3,000 flat rate bounty for bugs that fit its criteria, while Facebook has given out as much as $20,000 for a single bug report. Google paid Chrome operating system bug reporters a combined $700,000 in 2012 and Microsoft paid UK researcher James Forshaw $100,000 for an attack vulnerability in Windows 8.1.  In 2016, Apple announced rewards that max out at $200,000 for a flaw in the iOS secure boot firmware components and up to $50,000 for execution of arbitrary code with kernel privileges or unauthorized iCloud access.


While the use of ethical hackers to find bugs can be very effective, such programs can also be controversial. To limit potential risk, some organizations are offering closed bug bounty programs that require an invitation. Apple, for example, has limited bug bounty participation to few dozen researchers.

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