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: http://blog.sat0ri.com/challenges/ten/verify.php?hash=
OR
- Decrypt the code (you’re such a brute!)
- Verify your hash here: http://blog.sat0ri.com/challenges/ten/verify.php?hash=
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)
Rules;
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!
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!
Drrriiingg...Driiingg...
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.
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.
Assignment:
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.
- 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!!!