A Beginners Guide To Hacking Computer Systems.pdf

HACKING INTO COMPUTER SYSTEMS

A Beginners Guide

Guides of the Beginner's Series:

So you want to be a harmless hacker?

Hacking Windows 95!

Hacking into Windows 95 (and a little bit of NT lore)!

Hacking from Windows 3.x, 95 and NT

How to Get a *Good* Shell Account, Part 1

How to Get a *Good* Shell Account, Part 2

How to use the Web to look up information on hacking.

Computer hacking. Where did it begin and how did it grow?

GUIDE TO (mostly) HARMLESS HACKING

Beginners' Series #1

So you want to be a harmless hacker?

"You mean you can hack without breaking the law?"

That was the voice of a high school freshman. He had me on the phone because his father had just taken

away his computer. His offense? Cracking into my Internet account. The boy had hoped to impress me with

how "kewl" he was. But before I realized he had gotten in, a sysadmin at my ISP had spotted the kid's

harmless explorations and had alerted the parents. Now the boy wanted my help in getting back on line.

I told the kid that I sympathized with his father. What if the sysadmin and I had been major grouches? This

kid could have wound up in juvenile detention. Now I don't agree with putting harmless hackers in jail, and

I would never have testified against him. But that's what some people do to folks who go snooping in other

people's computer accounts -- even when the culprit does no harm. This boy needs to learn how to keep out

of trouble!

Hacking is the most exhilarating game on the planet. But it stops being fun when you end up in a cell with a

roommate named "Spike." But hacking doesn't have to mean breaking laws. In this series of Guides we teach

safe hacking so that you don't have to keep looking back over your shoulders for narcs and cops.

What we're talking about is hacking as a healthy recreation, and as a free education that can qualify you to

get a high paying job. In fact, many network systems administrators, computer scientists and computer

security experts first learned their professions, not in some college program, but from the hacker culture.

And you may be surprised to discover that ultimately the Internet is safeguarded not by law enforcement

agencies, not by giant corporations, but by a worldwide network of, yes, hackers.

You, too, can become one of us.

And -- hacking can be surprisingly easy. Heck, if I can do it, anyone can!

Regardless of why you want to be a hacker, it is definitely a way to have fun, impress your friends, and get

dates. If you are a female hacker you become totally irresistible to men. Take my word for it!;^D

These Guides to (mostly) Harmless Hacking can be your gateway into this world. After reading just a few of

these Guides you will be able to pull off stunts that will be legal, phun, and will impress the heck out of your

friends.

These Guides can equip you to become one of the vigilantes that keeps the Internet from being destroyed

by bad guys. Especially spammers. Heh, heh, heh. You can also learn how to keep the bad guys from

messing with your Internet account, email, and personal computer. You'll learn not to be frightened by silly

hoaxes that pranksters use to keep the average Internet user in a tizzy.

If you hang in with us through a year or so, you can learn enough and meet the people on our email list and

IRC channel who can help you to become truly elite.

However, before you plunge into the hacker subculture, be prepared for that hacker attitude. You have been

warned.

So...welcome to the adventure of hacking!

WHAT DO I NEED IN ORDER TO HACK?

You may wonder whether hackers need expensive computer equipment and a shelf full of technical manuals.

The answer is NO! Hacking can be surprisingly easy! Better yet, if you know how to search the Web, you

can find almost any computer information you need for free.

In fact, hacking is so easy that if you have an on-line service and know how to send and read email, you can

start hacking immediately. The GTMHH Beginners' Series #2 will show you where you can download

special hacker-friendly programs for Windows that are absolutely free. And we'll show you some easy

hacker tricks you can use them for.

Now suppose you want to become an elite hacker? All you will really need is an inexpensive "shell account"

with an Internet Service Provider. In the GTMHH Beginners' Series #3 we will tell you how to get a shell

account, log on, and start playing the greatest game on Earth: Unix hacking! Then in Vol.s I, II, and III of the

GTMHH you can get into Unix hacking seriously.

You can even make it into the ranks of the Uberhackers without loading up on expensive computer

equipment. In Vol. II we introduce Linux, the free hacker-friendly operating system. It will even run on a 386

PC with just 2 Mb RAM! Linux is so good that many Internet Service Providers use it to run their systems.

In Vol. III we will also introduce Perl, the shell programming language beloved of Uberhackers. We will even

teach some seriously deadly hacker "exploits" that run on Perl using Linux. OK, you could use most of these

exploits to do illegal things. But they are only illegal if you run them against someone else's computer

without their permission. You can run any program in this series of Guides on your own computer, or your

(consenting) friend's computer -- if you dare! Hey, seriously, nothing in this series of Guides will actually

hurt your computer, unless you decide to trash it on purpose.

We will also open the gateway to an amazing underground where you can stay on top of almost every

discovery of computer security flaws. You can learn how to either exploit them -- or defend your computer

against them!

About the Guides to (mostly) Harmless Hacking

We have noticed that there are lots of books that glamorize hackers. To read these books you would think

that it take s many years of brilliant work to become one. Of course we hackers love to perpetuate this myth

because it makes us look so incredibly kewl.

But how many books are out there that tell the beginner step by step how to actually do this hacking stuph?

None! Seriously, have you ever read _Secrets of a Superhacker_ by The Knightmare (Loomponics, 1994) or

_Forbidden Secrets of the Legion of Doom Hackers_ by Salacious Crumb (St. Mahoun Books, 1994)? They

are full of vague and out of date stuph. Give me a break.

And if you get on one of the hacker news groups on the Internet and ask people how to do stuph, some of

them insult and make fun of you. OK, they all make fun of you.

We see many hackers making a big deal of themselves and being mysterious and refusing to help others

learn how to hack. Why? Because they don't want you to know the truth, which is that most of what they

are doing is really very simple!

Well, we thought about this. We, too, could enjoy the pleasure of insulting people who ask us how to hack.

Or we could get big egos by actually teaching thousands of people how to hack. Muhahaha.

How to Use the Guides to (mostly) Harmless Hacking

If you know how to use a personal computer and are on the Internet, you already know enough to start

learn ing to be a hacker. You don't even need to read every single Guide to (mostly) Harmless Hacking in

order to become a hacker.

You can count on anything in Volumes I, II and III being so easy that you can jump in about anywhere and

just follow instructions.

But if your plan is to become "elite," you will do better if you read all the Guides, check out the many Web

sites and newsgroups to which we will point you, and find a mentor among the many talented hackers who

post to our Hackers forum or chat on our IRC server at http://www.infowar.com, and on the Happy Hacker

email list (email hacker@techbroker.com with message "subscribe").

If your goal is to become an Uberhacker, the Guides will end up being only the first in a mountain of material

that you will need to study. However, we offer a study strategy that can aid you in your quest to reach the

pinnacle of hacking.

How to Not Get Busted

One slight problem with hacking is that if you step over the line, you can go to jail. We will do our best to

warn you when we describe hacks that could get you into trouble with the law. But we are not attorneys or

experts on cyberlaw. In addition, every state and every country has its own laws. And these laws keep on

changing. So you have to use a little sense.

However, we have a Guide to (mostly) Harmless Hacking Computer Crime Law Series to help you avoid

some pitfalls.

But the best protection against getting busted is the Golden Rule. If you are about to do something that you

would not like to have done to you, forget it. Do hacks that make the world a better place, or that are at least

fun and harmless, and you should be able to keep out of trouble.

So if you get an idea from the Guides to (mostly) Harmless Hacking that helps you to do something

malicious or destructive, it's your problem if you end up being the next hacker behind bars. Hey, the law

won't care if the guy whose computer you trash was being a d***. It won't care that the giant corporation

whose database you filched shafted your best buddy once. They will only care that you broke the law.

To some people it may sound like phun to become a national sensation in the latest hysteria over Evil

Genius hackers. But after the trial, when some reader of these Guides ends up being the reluctant "girlfriend"

of a convict named Spike, how happy will his news clippings make him?

Conventions Used in the Guides

You've probably already noticed that we spell some words funny, like "kewl" and "phun." These are hacker

slang terms. Since we often communicate with each other via email, most of our slang consists of ordinary

words with extraordinary spellings. For example, a hacker might spell "elite" as "3l1t3," with 3's substituting

for e's and 1's for i's. He or she may even spell "elite" as "31337. The Guides sometimes use these slang

spellings to help you learn how to write email like a hacker.

Of course, the cute spelling stuph we use will go out of date fast. So we do not guarantee that if you use

this slang, people will read your email and think, "Ohhh, you must be an Evil Genius! I'm sooo impressed!"

Take it from us, guys who need to keep on inventing new slang to prove they are "k-rad 3l1t3" are often

lusers and lamers. So if you don't want to use any of the hacker slang of these Guides, that's OK by us.

Most Uberhackers don't use slang, either.

Who Are You?

We've made some assumptions about who you are and why you are reading these Guides:

· You own a PC or Macintosh personal computer

· You are on-line with the Internet

· You have a sense of humor and adventure and want to express it by hacking

· Or -- you want to impress your friends and pick up chicks (or guys) by making them think you are an Evil

Genius

So, does this picture fit you? If so, OK, d00dz, start your computers. Are you ready to hack?

GUIDE TO (mostly) HARMLESS HACKING

Beginners' Series #2, Section One.

Hacking Windows 95!

____________________________________________________________

Important warning: this is a beginners lesson. BEGINNERS. Will all you super k-rad elite haxors out there

just skip reading this one, instead reading it and feeling all insulted at how easy it is and then emailing me to

bleat "This GTMHH iz 2 ezy your ****** up,wee hate u!!!&$%" Go study something that seriously

challenges your intellect such as "Unix for Dummies," OK?

Have you ever seen what happens when someone with an America Online account posts to a hacker news

group, email list, or IRC chat session? It gives you a true understanding of what "flame" means, right?

Now you might think that making fun of dumb.newbie@aol.com is just some prejudice. Sort of like how

managers in big corporations don't wear dreadlocks and fraternity boys don't drive Yugos.

But the real reason serious hackers would never use AOL is that it doesn't offer Unix shell accounts for its

users. AOL fears Unix because it is the most fabulous, exciting, powerful, hacker-friendly operating system

in the Solar system... gotta calm down ... anyhow, I'd feel crippled without Unix. So AOL figures offering

Unix shell accounts to its users is begging to get hacked.

Unfortunately, this attitude is spreading. Every day more ISPs are deciding to stop offering shell accounts

to their users.

But if you don't have a Unix shell account, you can still hack. All you need is a computer that runs Windows

95 and just some really retarded on-line account like America Online or Compuserve.

In this Beginner's Series #2 we cover several fun things to do with Windows and even the most hacker-

hostile Online services. And, remember, all these things are really easy. You don't need to be a genius. You

don't need to be a computer scientist. You don't need to won an expensive computer. These are things

anyone with Windows 95 can do.

Section One: Customize your Windows 95 visuals. Set up y our startup, background and logoff screens so

as to amaze and befuddle your non-hacker friends.

Section Two: Subvert Windows nanny programs such as Surfwatch and the setups many schools use in the

hope of keeping kids from using unauthorized programs. Prove to yourself -- and your friends and

coworkers -- that Windows 95 passwords are a joke.

Section Three: Explore other computers -- OK, let's be blatant -- hack -- from your Windows home computer

using even just AOL for Internet access.

HOW TO CUSTOMIZE WINDOWS 95 VISUALS

OK, let's say you are hosting a wild party in your home. You decide to show your buddies that you are one

of those dread hacker d00dz. So you fire up your computer and what should come up on your screen but the

logo for "Windows 95." It's kind of lame looking, isn't it? Your computer looks just like everyone else's box.

Just like some boring corporate workstation operated by some guy with an IQ in the 80s.

Now if you are a serious hacker you would be booting up Linux or FreeBSD or some other kind of Unix on

your personal computer. But your friends don't know that. So you have an opportunity to social engineer

them into thinking you are fabulously elite by just by customizing your bootup screen.

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