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Submitted by: detten
File name:
Submitted: 2011-09-08 14:06
Downloads: 2553
File size: 176 kB

Download Now! Challenge #10 by sharpe

OK, here we are again with a new series of challenges, which will start with number 10. This one isn’t that difficult but it requires that you consider new options. I left half of this challenge easy to help you along, so you can solve this one two ways, the tough way and the easier way. Here’s a tip: read all the code, there isn’t much.

Here are the guidelines:

- Find the number of Nerf darts
- Find the hash (it’s a number)
- Generate the valid MD5 like so: MD5(:)
- Enter the MD5 and press the “Unlock” button to decrypt the code
- Press the “Go” button to see if you got it right.
- Verify your hash here:


- Decrypt the code (you’re such a brute!)
- Verify your hash here:

Have fun!

0 comment(s) | File link

Submitted by: planethax
File name:
Submitted: 2008-08-14 17:24
Downloads: 12805
File size: 11 kB

Download Now! Very Easy CrackMe

While trying to figure out another very easy crackme I was messing with VB.

I ended up making my own CrackMe (very first!!!! )

This is very easy, initially it was too easy, first BP and serial was sitting in your face lol, so I added an extra compare (hint)

NO PATCHING! This is too easy to Patch
Serial Fishing is Acceptable on 1 Condition -
*****When Posting your serial, you must also Post the Process you used to get the seria!*****
Keygenning is Ultimate Goal!


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Submitted by: detten
File name: Bispoo_keygen1.rar
Submitted: 2008-07-14 18:50
Downloads: 4856
File size: 10 kB

Download Now! Bispoo Keygenme#1

This is my first Crackme! Its all Written in Assembler, Everything is allowed,
you can patch etc, write a small txt how you've done it,
if you bother, write a keygen , that's all. Hope u enjoy it!

0 comment(s) | File link

Submitted by: detten
File name: detcrackme13.rar
Submitted: 2008-06-02 19:29
Downloads: 3311
File size: 2 kB

Download Now! Detten Crackme 13

To solve this crackme, you have to do 2 things :

- Make a working dump of the program.

- find a serial for your name, or better, make a keygenerator

That's it!

And of course no patching in the registration algo ;)

0 comment(s) | File link

Submitted by: detten
File name:
Submitted: 2008-06-02 19:23
Downloads: 3006
File size: 3 kB

Download Now! Detten Crackme 12

Goal : Find the correct serial.

Means: No patching or loaders allowed

Extra: File is not packed, no code had been hidden.

Don't try to bruteforce all combinations, too much work!

Instead try to figure out the 'holes' in the code.

Story: You are standing in front of a large storageplace, no windows, only one

door. Inside the building there are some pre-production nanocomputer

prototypes (the only ones existing).

In your left hand, you have a disk with a 2048 bits encrypted message you

intercepted. You HAVE TO decypher it today! Otherwise you will never know

the exact plans of the terrorists, and we all know how that ends...

The computers inside the building are the only ones fast enough to brute

force the message by tonight!

So there you are, in front of that huge steel door, with only a keypad...

0 comment(s) | File link

Submitted by: detten
File name:
Submitted: 2008-03-13 18:45
Downloads: 6109
File size: 35 kB

Download Now! Detten Crackme 11 : A little sto

Nitwit : Professor Nitwit speaking...

Rascall: Professor, this is John Rascall from the ISA (Intergalactic Space Agency).

You have to come immediately to galaxy TRS-80!! There has been an spiritual attack from the ghosts again!!

We need your expertise, NOW!!!

Nitwit : Calm down John, I'll come over right away...

you : What's the matter professor??

Nitwit : The ghosts attacked again, I have to go on a journey for a while.

You must go home now, my assistant, the ghosts may be already in the building. Even in this lab...!

you : I'll go home right away...

Nitwit : but first I'll lock the mainframe and enable the patrol-device!
If the ghosts can connect to our computer, it would mean the end of humanity!!
We have to prevent that at all cause... I must leave now...

you : Why is that professor?

Nitwit : Very important info about the human genes is stored on the mainframe.

If it falls in the wrong hands, we're finished :(

you : Isn't that impossible? The mainframe is inside a satelite?? That looks safe to me!

Nitwit : Not completly until the firewall is started. Use the terminal in my office to secure it.

you : But how can I do that? I've never done that before!

Nitwit : Damn you, stupid boy! Here take this manual. I really have to go now!

you : Bye, professor. Don't forget to bring me a present...
--professor leaves--
you : Damn, Nitwit forgot to give me the password to start the security!

He forgot to give me all the passwords...

Shit!! Well, I'll have to crack it...
And here you are... in front of the mainframe...

Let's crack and reverse... :)

Note : This crackme was submitted again on request, all email and web links in the zip file are invalid now.

0 comment(s) | File link

Submitted by: detten
File name:
Submitted: 2008-03-13 18:32
Downloads: 4060
File size: 29 kB

Download Now! Detten Crackme 10

GOAL : Find a correct serial, no patching allowed.
TECHNIQUE : A multipart serial with internal checks.

Resubmit of an old crackme on request.

0 comment(s) | File link

Submitted by: Devoney
File name: crack3.exe
Submitted: 2007-11-02 21:14
Downloads: 3875
File size: 14 kB

Download Now! CrackMe 3.0 by Devoney

Intro:The FBI has intercepted a program which contains important information. The program needs a code to give the information free, but the FBI and CIA are clueless and has asked you, as a professional cracker, to get the information from the program.

The Story of the FBI:
A Russian maffia group who call them selfs Brevihock are planning an attack on the american ambasy in Berlin (Germany). Atleast that is what the cought suspect says. He says it has something to do with a recently researched technology in a Russian laboratory about radio-active radiation. This is all the suspect swears to know. He does not know when the attack is going to take place. The Russian goverment is clueless too because all of the research institutes have to report their foundings to the goverment but nothing of this has been reported, and the Russian police is drowning in the loads of paperwork to go through, seeing if they can find any of this in the research documents taken from the laboratories.

The FBI can not get their hands on the documents because Russia wont cooperate by sharing the documents, and there by sharing all of their researched technologies of the last couple of years.

The FBI has managed to crack the email of the suspect though. This resulted in some information about corrupted professors on the payroll in Russia and the role of the suspect in this case.
The suspect needed to provide some goods to the laboratory so they can finish the weapon.

In one of the emails there was an applications (windows based) which should contain the exact location of the laboratory. The application needs some kind of code. How hard the FBI tries, the suspect claims to have forgotten the code.... We know that it is not the truth but more he wont spit.

Crack the application and find the location.

** Tested on Windows Xp and Vista **
Once you have the location, check it out, and you will know if you have the correct location or not. If you doubt anyway then PM me.
If you needs tips, then post a comment.

0 comment(s) | File link

Submitted by: viruset56
File name: hello.rar
Submitted: 2007-09-08 09:06
Downloads: 2848
File size: 9 kB

Download Now! Reversme : add resources

- Add 2 new sub menu-items under the menu-item 'File'.
- Call one of them 'Info'.
- The other one 'hide'.
- Add a seperator between 'hide' and 'exit'.
- Make the 'Info' button display an alert(OK button) with the text "Net Force Reverse Engineering Challenge".
- Disable the 'hide' button so you can't click it anymore and it's gray.
- Change the text "Hello World!" into "Reverse Engineering is cool!".
- Write a full tutorial on how you did it.
- Patch hello.exe and make everything work.

Tools to use:

- Dissambler (i.e. ollydbg)
- Patcher (or HEX editor / Ollydbg)
- HEX editor
- The use of a Resource Editor is strictly forbidden!!!

Good luck!

0 comment(s) | File link

Submitted by: Reversedhex
File name: crackme by
Submitted: 2007-04-15 22:33
Downloads: 3495
File size: 25 kB

Download Now! My first crackme

hello guys,
this is my first crackme hope you can cr4ck it!
pm me

0 comment(s) | File link

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