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In this video you're going to learn how to change the MAC address of your devices with the python.

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Now let's start with some basic terminology.

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First what is a MAC address.

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So if a MAC address is being assigned to every network device by its manufacturer and it's actually

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being used for identification and communication purposes across the network it often is that the MAC

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address is Brendan on the device itself.

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So the the address is hardcoded in the device.

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However it can be spoofed or temporarily changed for different reasons or purposes.

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There are a lot of legitimate reasons when changing the MAC address makes sense such as when creating

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wireless connections to a particular network.

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And of course there are also many illegitimate reasons to do to do it such as for gaining unauthorized

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access to a network for example.

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And they need to say that you should only use the information in this video for legitimate purposes

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only.

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OK.

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One thing to add is that when spoofed the MAC address is changed until rebooting the device or the system.

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That said what we're going to build today is a python code that will change your mac address with a

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brand new one.

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So procedurally we're going to make this code compatible with Linux systems.

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And as you can see I have a linux Bharat operating system up and running here.

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So I've told you what's a MAC address.

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But how does it actually look like.

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So for example it can look like this A one B to a six for example 34 one B six D.

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So any combination of two characters from eight to f 0 2 9.

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This is all a MAC address looks like.

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All right.

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Now the fun part.

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The coding lets actually go to a nano Ed..

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Well that's a new Mac dot view why.

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All right.

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So first of all in fourth I can just edit code in nano like they do in Visual Studio on windows.

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OK.

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So first we'll import random.

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We'll also need to import os for operating system commands and also sub process.

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So we'll create two functions that will help us get a valid random new mac address and this code is

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actually inspired by a post on Reddit which I'm willing to link in the code or in the resources of this

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video.

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We'll start with the basic function which is called get Rand and then this function is going to return

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random so we're going to look into random choice ABC the e f 0 1 2 3 4 5 6 7 8 9.

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So like I said from 8 to F and from 0 to 9 so this function is going to return a random character from

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this string.

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Then we create another function to actually create a completely new mac address.

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So we'll say get or not get less.

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OK actually seeing new Mac not you man but new Mac red an empty string.

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We start with an empty string like I said and we use a for loop.

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So for I in range 0 5

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we have new underscore plus equals get Rand plus get Rand plus this.

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Then we create a new Mac and I say that with a sub process call.

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So this is gonna give us something like let's say a B zero forty five 1 4 6 0 4 B and it also up until

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at this point if we run the new Mac this is what we can get.

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But we also see that we have common and this is unfinished because we have only one two three four five

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pairs and we need six pairs six double pairs in this case or any two.

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Another two character combination and to get to actually get the value MAC address so we exit the loop

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we exit the for loop.

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In this case let me just indented correctly.

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So we exit the for loop and then we'll say new on score plus equals get underscore Rand plus get underscore

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Rand.

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And this is going to complete our address with the last two characters.

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And finally this function is going to return the new underscore.

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OK.

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So these are the functions.

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Now let's actually change the Mac.

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What system calls.

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We change the MAC address.

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What system calls.

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So first let's pretty old address.

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We'll say print OS starts system I have config 88 zero and we'll grab for ether minus o e I'm gonna

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explain this shortly.

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0 from 9 2 0 from 9.

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ABC the E F we close the square brackets 17 characters and we close this one too.

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And I like to think I vote a veto on Reddit for this regex.

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Okay now we changed the address with some process and first we need to turn the ether 0 down.

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But let me show you.

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So if I do.

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And I have config here we can see 88 0.

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So we do I have conflict 88 0 if I do I have config 88 0.

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It's only going to show me 0 and if I grab for it ether like I did in this case it's going to only give

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me the line with the MAC address and then minus all we is going to give me exactly the MAC address itself.

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So if I do the entire thing here until shift C control shift the

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grep ether No such file or directory in this case it's being taken so 0 9 A B C D E F There is also

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another we're at

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so crap

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like this.

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And we only get the MAC address as you can see.

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So this is the command to get the MAC address and in order to change the address with the process with

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the sub process module WE NEED TO TURN THE PAGE 0 down.

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So we need sudo to make these changes and I'll just say so we need to make some process call and this

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call is going to run the command sudo f config.

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So you have to specify each command individually when you do some process call some process and os o

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our system and sub process call have similar functionalities.

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So 88 0 and also down this is going to turn it down.

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Then we get a new mac address instantiated in a variable so that's a new underscore am new Mac so we

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run the new Mac function that we've just created and then we make a system call to assign the new mac

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address to each DHS 0 so we'll also going to use the saw process call and then we're gonna send the

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following commands Sudo.

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I f config

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88.

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0 h w e thir.

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So for the either net present as first and new underscore M which is going to assign the new mac address

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with the sub process.

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Paul this is really cool.

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Then we can turn it 0 on with uh with the new mac address assigned to it another sub process start call

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Sudo.

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I have one thing e.g. zero up here we turned it down and now we turn it up or turn it on.

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And finally we can print the new mac address so save print.

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Actually OS that system I have config 88 0.

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We're at aether so it's very similar to the line here.

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Another grab it's actually the same thing minus all we from 0 to 9 A B C D E F close that 17 characters

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and we close everything.

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Awesome now control all to save control X to quit and let's actually run this.

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So our new if I do want I have config 88 0.

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We can see that our mac address is this 1 0 8 0 0 0 terminating in 0 9.

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And if I do Python new Mac that P Why of course we have the valid syntax that we eat that it's actually

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necessary.

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So it's not like this doesn't have to be in quotes.

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Let's run it again.

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Some process call when we have another valid and invalid syntax in this case.

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So we go back and correct that

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e.g. age 0 ether over here

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clear this and then run in one more time.

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Let's actually write with pseudo Python

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to underscore a mad dog P Y

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so if we run it with pseudo it actually changes the first time it didn't change.

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So if I do an IV config 88 to zero Now we can see that it changed it didn't want to change it the first

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time I have a hunch that it works without the pseudo.

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So if I run it again let's try that again yeah.

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So I don't have to actually run with Sudo it's probably because it doesn't actually change so fast as

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I run these commands.

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But anyway there you have it.

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This is how you change your mac address and by phone.

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Now I would encourage you to learn more about the sub process and the OS modules as they come in the

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python standard library and you can do some pretty heavy stuff with.