Tutorial: Craking a program with OllyDbg

[pacrat90]

Changing a JNZ to a JE is not the greatest of logic. You should actually REVERSE the jump from JNZ -> JZ (Jump if zero) this helps alleviate some problems you'd experience in other appliactions.

[pacrat90]

For those that didn't get this one, see my vid. Oh and, I type faster.

[talagmarc]

ur vid is a low quality... i cant understand it

[xXInuSakuyaXx]

hey help i just opened touhou 6 EoSD and I changed the SUB AL,1 into SUB AL,0 to have infinite lives, how can i save it???

[Dynaboy1]

Hello i need help for Cracking

Advanced XML Converter

Can anyone give me serial number or keygen pls

i really need this App

[EnErGyIHD]

nice

[kilonaka]

Go to your address bar, after the word YOU and before the word TUBE, type in "win" then press enter

[cchaai]

没有追出注册码。。爆破的话改成JMP或NOP更好些。

[talagmarc]

@cchaai i cant understand what ur sayin'!!! pls. translate it in english, pls..

[MrNoobWarrior]

thanks for typing slow and the slow video cause every other single video damn sucks they go to fast urs is good

[belagiorgo]

damn i like this videos:)ajatkinson2004 do you how to unlock this web site heroengine .co m nice software

[psuroviec]

can someone answer my question. do you think you could hack itunes so you don't have to register to it using olly debugger?

[myfood123]

@ajatkinson2004

Lol umm... Can you team view me? I can't seem to crack this program O_o

Its worth 200$ ++ for the program and i want it 4 free and im confused wit olly can u help?

[xsixstring7]

@myfood123 demonoid.com

[myfood123]

@xsixstring7

Its not there... You can't find it on the net I need someone to Team View me and do it for me...

[viewerbroadcaster]

you type like a grandma, a slow grandma and your explaining sux

[pusah56]

can you please crack this software i beg you i need this please...

Neuratron AudioScore 6.5

[NostaligicBlackFrost]

Nice background music, love APC! and nice video too!

[ShaiqSandhu]

this video is awesome

[ShaiqSandhu]

man of hack

[Discoboy1337]

Hi can you help me?I cracked program that needs registration,but I need to keep entering registration key to make it registred.What I need to do ,so that I could just enter the registration key once?

[wartex8]

@Discoboy1337

If you were able to crack the program... just jmp the registration process like he did in this video.

[MikeWithBigTube]

do u know how to crack a program with bittorrent? nobody does it on here. i found a way but lost the site that gave very detailed instructions on how to. and cant find it anymore. it had to do with opening the local disk C and stuff

[youdripblood]

@MikeWithBigTube hmm there are many vids on youtube that show you that. does it have something to do with going into your registry data???

[MikeWithBigTube]

@youdripblood nevermind. i dont even rember what i was trying to do. it was too long ago.

[Timeyhen]

Why i can't found the Message (a example) "The Key is wrong!" ?

I try it on 5 programms but i found the string in one of the programms but not in the other programms =(

why?

(sry for my english^^)

[youdripblood]

@Timeyhen They use different techniques now. many ones dont display a string message they display a graphic which is much harder to find.

[xXChenzXx]

what exactly does this program do?

[hardlyown]

it's a HEX editor to wach allmost anything inside the .exe

[DonBerto]

@xXChenzXx Its a debugger

[abcdfghijlnopqrst]

@xXChenzXx what this program does is look at what ever you specify it to look at like a keygenme and then you can see where the program checks the key, hopefully the program will be thinking "oh they put in 1234 but it should be 1233" and then you can go back and put in 1233

[1OmniDude1]

Is there some kind of central repository for crackme's that are known to be safe? Just finished my second crack on commercial software for fun and I'm hooked.

[eksell2]

how do i find JNZ??

[eksell2]

um how do i know how to edit there lol?

[ajatkinson2004]

U don't "edit there" all programs are different. Mine just happened to work this way. U need to work out your own solutions for every program

[MrShdwX]

Create a Shortcut for your OllyDbg in Send To menu.

[ajatkinson2004]

I won't crack ANY software for anybody so please read the description before you ask! Thank you

[iNeedAhaircut99]

yes very interesting, please type faster

[ajatkinson2004]

U'll see from my other videos that I now use a microphone...

Thanks for the view! Keep coming back!

[Mastersun88]

do you know how I would Crack avid Media Composer I want that program really bad & I can't get it to crack I do not know how to use it please download avid and try to crack it & show me how. I want to make a cool movies with it like the Pros do.

[M4TR1X999555]

Sometimes, when I crack with OllyDbg, I got error: "Its code section is either compressed, encrypted, or contains large amount of embedded data." What should I do ? ? ? ? ? ?

[eksell2]

its on desc

[LewieModz]

can someone with msn help me plz

[jahmillk]

accturly u dont need assembly exprience ever onyl graphic expreince if u want ur assmbled crack or patch 2 look nice there are may patch makers that gen it for you with skins n them mod songs xm's ect

[ajatkinson2004]

Yeah but im trying to convey the point that you need to learn to MAKE those genning programs yourself to be a real badass. I can't do it and im not ashamed to say i can't! Its very hard to learn, but doing things like this gets you headed the right direction...

[iluveuinislam]

if u wanna be a gd cracker for programs u must teach assemblly language . isnt it ?

[LindB377]

or get a BA in comp science

[RRRRussia]

which would only serve the purpose of teaching you assembly..

[LindB377]

Im a quarter of the way to my BA in Computer Science. We've discussed Assembly but did not dwell on it too much. C++ is what I have mainly done so far.

[RandomCarrots]

Nice one i love ollydbg :) so simple

[Karelke2000]

thanks dude, i managed to change a JE to JNZ and my program skipped te serial check! awesome you are the man. hope to hear more trics from you. i needed te call stack to find out where to look.

[Fenderrocker34]

well, you dont type like a hacker

[samrudoff]

@Fenderrocker34 wtf does that mean your assuming that all hackers are the same well you my friend are verry wrong!

[plip1973]

Am i going to change all the JNZ or there is a specific file i am going to hange. And if there is? May i know what is?

[NuxlyStardust]

learn to type, I fell asleep after the first minute.

[ajatkinson2004]

thats a shame...

[mrlundt]

Are u in family with Rowan Atkinson XD

[ajatkinson2004]

i dont think so, where is this person from?

[jkjljkjj]

i didn't understand a word, what jump that u keep talking about, i wanna know what jump means? in this programme ofcourse.

[ajatkinson2004]

LMAO!!! It's assembly language! JMP means the program "jumps" to a specific memory address and resumes execution. You should really study some assembler 1st or none of this will make any sense whatsoever...I still don't understand all of it my own self!

[InsecureSecurity]

study some *Assembly not assembler :P

and some tool

you can also use to make life easier is:

W32DASM (windows dissasembler)

HIEW (Hackers view)

and you just need to learn some basics of assembly, you dont have to know everything for cracking and you need to know how memory works

[naeembabakheil]

How can i learn Assembly i m not a programmer , not a Coder how can i learn Assembly and where should learn easily...

[ajatkinson2004]

You must become a "coder". With the advent of the Internet in like the 1980s information on assembly is available online.

[NiGhtMarEs0nWax]

learn C++ first mate, herbert shildt wrote a book for beginners, google these ISBNs

# ISBN-10: 0072232153

# ISBN-13: 978-0072232158

its not easy! but it will get you very familiar with programming and teh stack among other things. it will also help to learn binary before you start, that shouldnt take more than 20 mins. assembly is based around hardware, a good working knowlege is needed for x86 assembly, learning how hardware interacts is essential before you learn assembly.

[Antiks72]

lol 20 min. right.

[NiGhtMarEs0nWax]

binary? 128, 64, 32, 16, 8, 4, 2, 1 just add a 1 to the cell that you require a value from and fill the rest with zeros. 0 0 0 0 0 0 0 1 = 1 for example. 1 0 0 0 0 0 0 0 = 128 1 0 0 0 0 0 0 1 = 129 0 1 0 0 0 0 1 0 = 66 hex is just a representation of binary. a 4 bit number is represented below. 8, 4, 2, 1 1 0 0 1 = 9 but what does 10 equal? how do you represent 10 in hex?

[NiGhtMarEs0nWax]

well going by this table,

0,1,2,3,4,5,6,7,8,9, A, B, C, D, E, F

0,1,2,3,4,5,6,7,8,9,10,11,12,1­3,14,15

10 is represented by A, that is in hex.

its a base 16 numbering system, where base 10 will use the numbers 0 - 9 as its base of 10, then add one unit to represent a 10th value, base 16 means there are 16 unique alphanumeric numbers represented by one digit, 0-F. what comes after F? 10, you have to abandon your view of base 10, and dont try to understand base 16 decimally.

[NiGhtMarEs0nWax]

so hex would look like this.

0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,­F

10,11,12,13,14,15,16,17,18,19,­1A,1B,1C,1D,1E,1F

20,21,22,23,24,25,26,27,28,29,­2A,2B,2C,2D,2E,2F

you can think of 10 a representation of how many units and '16ths' exists, for example, 12 would mean 1 16th exists (F), and two units (2), much like in decimal 12 means 1 tenth exists and 2 units.

i think that is an adequate explanation of binary in 5 minutes, very few people will understand the decimal value of hex, but luckily for you

[NiGhtMarEs0nWax]

decimal is irrelevant when it comes to computing, its only exists in the computing world to integrate the human interface. you have a cpu at your disposal to do the conversion.

i think i made my point. this video is an example of cracking, which requires an intimate knowlege of assembly AND binary, its important to understand they are two different things.

[NiGhtMarEs0nWax]

check these out for beginning assembly, but i would suggest you learn C++ first, it should only take a few weeks if you work hard at it, takes years to master though.

# ISBN-10: 0471375233

# ISBN-13: 978-0471375234

[C0nc3pt94]

I don't get what you're looking for when you're searching through the files and then how you know what jnz to change to a je etc. if you could explain for newer people to searching for serials then would be much easier to understand..

[ajatkinson2004]

you just use F7 or f8 to trace through each step in the program as it runs. If it is as simple as this example, you wait till the program asks for info and compares info i.e.(Does the user's serial equal a certain value such as x) The program will ONLY let you register if userInfo == x. We then patch so that the decision evaluates as true no matter what I enter. So we change if userInfo == x to userInfo != x...Most apps aren't this easy!

[G0blinS0ul]

Nice choice of music ^^

[blahyourmamafoo]

yes, i remember my first baby steps in reversing...

patching causes the program to show the "correct" screen, yet doesnt actually use the right serial, so you will have to go through the registration each time.

usta4070, yes it probably would. yet. people need to read more about opcodes and assembly/disassembly and maybe a tiny bit of a programming language before even thinking about reversing.

[usta4070]

This video would be of more use if the audience knew the diff between a memory address and an op code. Telling them to change a jump without an explanation of their jump options won't do dick for them. They need to learn basic assembly first, then the "why" to to it all. becomes clear.

[ActionInfection]

interesting....

bt does it work with all programs?

[blahyourmamafoo]

no. far from it.

if only it were that simple lol

in fact, those "crackme" programs are almost pointless...

most modern programs are nothing like that kind of simple coding, and the main goal of reversing is to find a working registration code, or editing it to allow permanent/full activation, so analyzing the code is more helpful than nop'ing things out.

[DarkInjection]

this why we got bp ;)

[ajatkinson2004]

assembly works in bits and bytes...u cant think of assembler in terms of variables and modern math. Everything happens at such a low level that even simple arithmetic may take many lines of code to solve. Use truth tables, and also learn some HEX!

[ajatkinson2004]

learn to use the f7 and f8 in ollydbg to move step by step through the code. You really need to learn some assembler if you want to do anything useful though. If your on a PC with intel processor, there is mountains of good info all over the net to learn from. It takes time and discipline though...

[remixg2k]

your technique works but i have no idea how to do it i been trying all day im baffled about the jmp and the jnz stuff can you help me in anyway ???

[ajatkinson2004]

jnz jump if not zero. the variable in the register. je jump if equal, etc etc

[M4rt1nR4m0n3]

Muy buen ejemplo para empezar, los problemas comienzan cuando los programadores utilizan su ingenio para joderle la vida a uno jaja pos que mas se hace :P

If you don't understand my reply,i tell you good work for begin :D

[ajatkinson2004]

thanks! I am trying to learn lol. I am better at network and web server security, but I want to learn reversing also.

[ajatkinson2004]

Choose High Quality when viewing this vid!!!

[DaBossjj39]

so, i have atomic email sender v4.1 and tried your tip and man-o-man i suck you think you can get me the serial?

[ajatkinson2004]

you want me to help you send spam???? nice...i think i'll go spy for the russians first

[DaBossjj39]

no NOT spam, company news letter but I understand.. Thanks.

[ajatkinson2004]

if its for the company, why did they not provide a registered copy? are you the owner

?

[hooty454]

In the beginning couldn't you just change it to JMP instead of JE

[ajatkinson2004]

well I don't remember the exact code, but I think it is trying to give the error code if for instance x=2 or in other words not zero (JNZ). For our purposes of reversing the order of the functions we reversed the occurances of JNZ and JE before the message box. If the function for the congrats was JNZ we made it JE and vice versa. It really just depends on the code...

[Patrykradomir]

how obout Crysis? can i change files to make ghost mode?Or its only to make a cracks? PLS Help

[sypha0x]

You could definitely crack any software as you wish it's not only for license key bypassing. You can definitely increase life unlimited ammo or aimbot, speedhack etc....the possibilities are endless.

[ajatkinson2004]

yeah, I couldn't crack the advanced stuff...sypha0x I believe speaks assembly as a second language (LOL). I am not that educated at reversing yet, but sypha0x is patiently teaching me as the days go by. It's good to hear from him to...Haven't heard from U in a couple of days...

[Patrykradomir]

ok THX. Bud thats no easy.(im noob with Ollydbg)

[ajatkinson2004]

what do you mean ghost mode? IS crysis a game?

[Patrykradomir]

CRYSIS is a game.Buy and try to play.

[ajatkinson2004]

for vista, right-click OllyDbg and select "run as administrator". If you still need assistance, go to my site, register, and drop a post in the forum...

[theycutheyknowu]

I have vista and i downloaded this and installed and its telling me i dont have rights to my own computer?.

[asdgaregarhgaf]

Hey, i do this with a sowtare but it doesn't work!....

can you crack it for me

it's poker RNG 6.0...PLEAZE

[sypha0x]

Nice! Keep up the great work. I actually wrote a nice C program in which took the assembly code that does the keygeneration part of it and have it generate a key based on certain params. Another great video!