Yeah, I gave you a book about rootkits to read, right?

I'm not a cracker , I've always been between being a white and grey hat

You changed username, it confused me

Never black hat

Yes , you did!

You always have the same username so I recognized you lmao

Have you read practical malware reverse engineering?

Have you read practical malware reverse engineering?

I'm still in the process of reading it , though I started that already

tbh most of the process of malware development is understanding the OS, so maybe a book on the Linux kernel API or the 4.4BSD book?

Or Windows internals by Russinovitch?

I was actually interested in using sockets for a botnet or for a C&C

Write a rat/bot software

Write a rat/bot software

lol

It is just a skmple program that will connect back to your open server

tbh most of the process of malware development is understanding the OS, so maybe a book on the Linux kernel API or the 4.4BSD book?

I'd be interested in Window , but I kind of hate developing with Windows API

And you can send commands

Yeah I know that

Write one for linux

Joseph Kong actually wrote another book about Driver Development in FreeBSD which is excellent, as well as the rootkits for BSD

There arent many viruses for linux

There arent many viruses for linux

I remember you had helped me as well

Also, might be interested to read the shellcoders handbook

I'm sorry I can't remember

I learnt server client programming , but I don't know how I would implement it in a bot

Also, might be interested to read the shellcoders handbook

Why, if he wants to be proficient in C?

I learnt server client programming , but I don't know how I would implement it in a bot

Then you have most likely just copy&pasted

Then you have most likely just copy&pasted

Nope

I learnt how it works

Shellcodes are C programs that execute assembly so it's still very close to C

I had already learnt about that on Python

So yeah it wasn't hard to understand

It's always the same thing

Writing a botnet: Server: SELECT with outfd and infd descriptor lists, some kind of message queue for commands/responses Slave: Open connection to server Wait for incoming commands

Mmh

Hard to implement? No

I'll try to figure out

I know how that works

Hard to implement? No

not hard

Just need to write it lol

Yep

You asked for an exercise, then you told us what you like to do/what interests you

I gave you an idea

Yeah

Thanks though!

Good luck :)

Do you recommend me any sources to have a look on in case I can't manage to find out?

I think IBM had very good select tutorial for handling multiple incoming connections

Im on mobile now

Ill try to find it

I'll try that then

As of now , I only built some simple TCP sockets

With a server and a client

So yeah , I didn't read yet about how to handle multiple incoming connections

But for the client struct in server, I would do some struct as linked list so removing from the list is easy when slave disconnects. In that list struct I would add the socket and message queue struct, the message queue is just plain char** of messages

And queues of both incoming and outcoming ofc

But dont listen to me too much, implement it how you would do it

So yeah , I didn't read yet about how to handle multiple incoming connections

Ok then just write one more simple chat program or whatever to handle multiple concurrent connections

read select man

I'd recommend using 0mq for message queueing. It's notoriously hard to get right

https://www.ibm.com/support/knowledgecenter/en/ssw_i5_54/rzab6/xnonblock.htm

I think this one was the good example of nonblocking select

You can google with keywords multiplexing, sockets, c, select

I'd recommend using 0mq for message queueing. It's notoriously hard to get right

How come?

Oh 0mq seems to handle sockets too :) thanks for the tip

https://www.ibm.com/support/knowledgecenter/en/ssw_i5_54/rzab6/xnonblock.htm

Thanks! Basically in order do this , I should read about how to handle multiple connections

Yeah but do some simpler select program first

So should I read about select first?

Yes

This one right? http://man7.org/linux/man-pages/man2/select.2.html

Yes and this

https://www.gnu.org/software/libc/manual/html_node/Server-Example.html

For an example

Thanks so much to you and Tom!

Np np

Happy to help waiting for my flight to departure

Anybody knows shell windows commands

lol

Anybody knows shell windows commands

del C:/

👍

Any youtuber recommendation for learning c

Any youtuber recommendation for learning c

Read K&R instead