brute-force attack..

[rmchokku]

Hi everyone,
I'm learning C atpresent and interested in developing some attack tools.I want to create first a brute force attack tool(i.e) password guesser.Based on the user constraints(a-z,1-0),the software should create passwords and with that the try couldbe done.

Also suggest me other interesting tools i could develop and also the areas in C where i should concentrate more.

Chokks.

[jethro]

Try developing strong encryption algorhythms or implementing existing ones. Projects lke those are always interesting.

[JCHostingAdmin]

I'm currently working on my version two portscanner and my third version of my firewall.

[jethro]

What are you using for the firewall? iptables?

[draziw]

Well, a brute-force password guesser is going to be a bit tougher than you might want to try as a "learning" tool. You'd be better off just doing it for the sake of generating random patterns, but brute-force of passwords is a little tough... (you might also want to take a look in to the Coast archive for crack and see why that, itself, isn't really a straight "brute force" but it's still frighteningly "good" at password guessing)

[freestyler]

JCHostingAdmin would you mind sharing the source of the fisrt portscanner with us , i was thinking about starting one too.

[jethro]

rmchokku. If it's a UNIX-based cracker, you probably are going to have to do a *lot* of research into DES, if you haven't already done so...

[draziw]

Yeah... DES would be a good start - from there, it only gets magnitudes more complicated (literally). LOL

[rmchokku]

Thanks for your reply.Tell me what i should do now and how can i work with DES? Can i get the source code of that anywhere??if a tool could generate passwords why not it can be called as an password guesser?Please explain and suggest what i should do at this point.Be elaborative to the extent possible.Give me some URLs too.

Chokks.