Challenge #4 (experts..) HARD

**WaR_MaN3** · Dec 13th, 2002, 07:24 PM

Hello,
I just wanted to see if anyone can crack this:

ãáõàààâàáäãç

Please try to encrypt it...I want to see if its well "hidden".

Thanks,
WaR_MaN3

(btw please read my other post, about the chr$, this is the program im talking about)

**WaR_MaN3** · Dec 13th, 2002, 07:57 PM

Are you guys
-Stuck
-Still figuring out
-or what?

Sorry, I would just like to see if anyone cracked..or something

WaR_MaN3

**nishantp** · Dec 13th, 2002, 10:10 PM

You need to provide more samples of the encryption for people to try to crack it. 1 Sample probably isnt enough for anyone except the CIA unless its really obvious.

A question though...why are all the asc codes in the string between 224 to 245?

**WaR_MaN3** · Dec 13th, 2002, 10:23 PM

I was interested about encryptions, so I asked a guy from another forum if he knew how to, so he gave me some code and then I edited it. I made it so you enter a source code...1- 778+ and I'm not sure...why they are between there....but I'll add some more samples:

)*+
#Ð*Ð Ð!$ÑÑÑ
%$Ð$ÐÐ&#ÞÞÞ*
Ð%Ð* &Ð&*$Ð(Ð'#Ð#Ð%$

Ok, I gave some samples...just random things.

Is that good enough?

**nishantp** · Dec 13th, 2002, 10:35 PM

Just so you know, Encryption get WAY WAY more complex than that. If you want to understand it, by all means go ahead and learn about it. But their's no point in actually trying to write your own encryption, beacuse you can't really beat the professional stuff.

**CVMichael** · Dec 14th, 2002, 12:08 AM

Does your first post decrypts to this: FDXCCCECDGFJ ?

Well, if you want the second one to be decrypted, then you have to encrypt something that makes sense... like a regular phrase...

And also, because some characters are not printable (when encrypted), it is better to put the output in a text file (instead of pasting here), because you preserve all the characters (as binary)...

nishantp, you saying, you can't beat the professional stuff ?
Well, I made a 512 bit encryption, enyone can beat that ?

And, WaR_MaN3, if you want a good start to learn encryption, look into XOR, and hashing algorithms...

**WaR_MaN3** · Dec 14th, 2002, 10:45 AM

Hello,
I didn't mean like it was totally random but i'll list all the ones I did:

First one: 31E000201437
I think the first 3 were random...

Others:
= abc

)*+ = xyz

#Ð*Ð Ð!$ÑÑÑ
Above One = crack my code please!!!

%$Ð$ÐÐ&#ÞÞÞ*
Above One = this is a number...maybe

Ð%Ð* &Ð&*$Ð(Ð'#Ð#Ð%$
Above One = i bet you guys will never crack this

Also, what do you mean my code isn't that great? I don't understand...What did you do to try to get the random thing you came up with? Also, I'll post one below, another sample and use ANY program out there to decrypt it...To me the code looks pretty unbreakable...but.

Sample:
*Ð

But see now you will know...because looking at the above code you know that the Ð is a space.

Another thing. How more complex is it with other pro? Can you send me an example? And I think you guys said that if I want to learn encrpytion go with XOR or whatever. Why? I downloaded some code and it isn't that great...If I really want to mess up my encryption and make it basicly uncrackable...Well first of all I enter a source code, so If i say hey, for instance I could enter "h" for source code 36 or something, "e" for 98, and "y" for 120 And that would be uncrackable pratically. And do decrypt another person has the program and you would just go on a pattern... 36, 98, 120, 36, 98, 120...

Thanks,
WaR_MaN3

**Hampster** · Dec 14th, 2002, 10:53 AM

Can you encrypt a paragraph or more of text and post it?

**WaR_MaN3** · Dec 14th, 2002, 11:36 AM

Sure:

ùÐ Ð %Ð (Ð(%Ð% Ð(#%Ð &%ÜÐ&%Ðù×Ð(#%ÐÐ!##!ÐÐ* &Ð(%ÞÐùÐ$%#%ÐòÐ Ð%Ð Ð&$Ð!# #Ð$Ð ÞÞÞ ÞÞÞùÐ#ÐÐ %Ð$Ð%ÐÐ% $Ð Ð$%&ÞÐùÐ#Ð (Ð% Ð Ð%$ÞÞÞ% ÞÞÞùÐ%Ð%$Ð$Ð &ÜÐ$ Ð#Ð* &Ð ÜÐ!$Ð#*!%Ð%ÐêÙÞ

Also, I encrypted it, copied it on to this and then copied this text on to my encrypter and decrypted and it was the same..so

Thanks,
WaR_MaN3

**Geespot** · Dec 14th, 2002, 11:54 AM

Hi

I made a simple encryption way way back and it was similiar to yours

'But see now you will know...because looking at the above code you know that the Ð is a space.'

You should make it so if you had a string

'aaaaaa'

it should encrypt too

'L%(FLD' ( or whatever )

it makes just that bit harder to crack it.
The way i did it a while back was each letter was encrypted to a letter based from the previous letter and its position in the string. That made it look like a string 'L%(FLD' continaed multiple letters instead of just a's

I managed to confuse my college mates because of it, neato lol

just my opinion

**WaR_MaN3** · Dec 14th, 2002, 12:00 PM

But how would I do that. I do not understand how I would base it on the last char because, as you see in my posts, I do not know chr$ functions that well...go in my other post if you want to know how I did my encryption and stuff. A guy helped me, as you see in that post, but I still don't get my encryption process..I got it from someone, and fixed it. It says like For x = 1 Len(strText)...Does it go backwards because of it can be infinate? Because why doesn't it go up...like reading "hello"
It basicly says x = 1...which is hello or is it saying right$...but see it never says right$, it just says For x = 1 Len(strText). But I guess I'll just have to say that it goes backwards unless someone explains. But thank you so much. I guess i'll try to base it on the last char, like plus 10 or something, but for me that'll be pretty hard..but

Thanks,
WaR_MaN3

**Geespot** · Dec 14th, 2002, 12:22 PM

Well, instead of just swapping alll one ascii value with another, i use the previous letter in the string to generate the next character.

For example this i just wrote, please note there is absolutely no error checking so it will have trouble on some strings

VB Code:

Public Function SimpleEncrypt(strBuffer As String) As String
    Dim i As Long
    Dim strEnc As String
    Dim intPrev As Integer
    Dim intPattern As Integer
    
    intPattern = 72
    
    
    For i = 1 To Len(strBuffer)
        
        '-- Just Xor first letter
        If i = 1 Then
            strEnc = strEnc & Chr$(Asc(Mid$(strBuffer, i, 1)) Xor intPattern)
        Else
            '-- Get Previous Character
            intPrev = Asc(Mid$(strEnc, i - 1, 1)) + 3
            '-- Generate new encrypted letter
            strEnc = strEnc & Chr$(intPrev Xor intPattern)
        End If
        
        
    Next i
    
    SimpleEncrypt = strEnc
End Function

basically that loops through the string, if its the first letter it just simply XOR's the ascii value, then it moves onto the next letter, XOR's the previous value +3. That way it generates totally differnt results for each letter.

for example passing the string 'aaaaaa' to that function will produce ')d/z5p' instead of all '))))))'. just adds a slight twist into the encryption.

**MR2** · Dec 14th, 2002, 12:38 PM

This is a very basic cypher. It took me less than 5 minutes to write a quick program to scan through all the various offsets to come up with a solution. This is why people are saying that until you understand the maths behind real encryption, it's pointeless trying to come up with your own algorithms because they will be seriously flawed in some respect.

**WaR_MaN3** · Dec 14th, 2002, 01:07 PM

If my program isn't good enough, wouldn't someone already decrypt it yet? I've giving more than enough samples...I even told you some code! The first like five things! so come on? I think I already have something in mind for you guys to do...But I'm not sure:

Each box thing has its own acsii I think..right?
Well why don't you make a quick program that tells the acsii, ok?
The givin samples provide the things, you just count like the first boxes were abc...then decide what acsii a was...by the box and your own program then see if any of my paragraphs were the same acsii as the A box, and then you have a...with my samples ones...when he said is this the right one, and I gave the answers...I'm not sure exacly if this will work...but its a good start.

Thanks for the example,
WaR_MaN3

**WaR_MaN3** · Dec 14th, 2002, 01:16 PM

SU SWEET!!!!!!!!!
I just found out something uber LEET that I never thought i'd come up with. The thing I just told you works..I made a program that tells you what acsii the box is..and in the paragraph i searched for that same acsii, and the box was the first one in abc, so that means whatever acsii number in the first box is "a"...just keep on doing that if you really wanna crack it.

I'll give you guys a huge hint...Here is the code I used:

VB Code:

Private Sub Command1_Click()
Label1.Caption = Asc(Text1.Text)
End Sub
 
Private Sub Command2_Click()
Label1.Caption = Chr$([Im not letting you see, figure it out])
End Sub

Please try! I wanna see if you guys can do it!
Thanks,
WaR_MaN3

**Hu Flung Dung** · Dec 14th, 2002, 01:32 PM

I do not know what to write about, but I'll write a paragraph if you want. I started VB along time ago because programming is col...lol...I learned a lot since then like tons of stuff. I learned how to do this...to...I think this is enough, so here you go, please encrypt it

.o\Y

This really wasn't hard at all to crack. I didn't even use your hints. I just wrote a program that converted it to character codes. Then I found out the '208' occurs too often and too regularly to be a letter, so i thought it was a space. The range between 208 and 32 is either 176 or 79 (depending on if you add or subtract). Then I worked from there.

When I write encryption algorithms, I usually base it on a password that the user enters. For example:

If I want to encode 'This sentence will be encoded.'
and the password is 'pimentos'

Then I create a string exactly as long as the sentece by repeating the password: 'pimentospimentospime', then XOR (or something more cryptic) the corresponding characters together.

**WaR_MaN3** · Dec 14th, 2002, 01:43 PM

Pretty good...How long did it take? Did you use a hack program that converts it?

NVM I read it again...I posted the above for any beginers...But I see....Yeah it is 176....I added 176 to encrypt...minused 176 to decrypt....I'm impressed...But I get it...you thought that 208 (whatever) occured to much and compared it to the regular acsii value, pressing F2 in vb, and then found out how much range it is....176 and then converted everything else based on that....

Good job man...good thinking...my hint was a little stupiders..too long...but I felt like giving you guys a hint. Hmm I wonder how I could make it so space isn't the same....The code the other guy gave me about basing on the previous acsii is good, but I don't understand how to decrypt...

I still have once question, how long did it take? When did you start trying to decrypt?

Edit: Since your so good..try it with one example : ) Its quite impossible..but with your brains : )

Sample:
ñí¹ôõÿ

Please try : )

Thanks,
WaR_MaN3

**Hu Flung Dung** · Dec 14th, 2002, 01:52 PM

Originally posted by WaR_MaN3
Pretty good...How long did it take? Did you use a hack program that converts it?

NVM I read it again...I posted the above for any beginers...But I see....Yeah it is 176....I added 176 to encrypt...minused 176 to decrypt....I'm impressed...But I get it...you thought that 208 (whatever) occured to much and compared it to the regular acsii value, pressing F2 in vb, and then found out how much range it is....176 and then converted everything else based on that....

Good job man...good thinking...my hint was a little stupiders..too long...but I felt like giving you guys a hint. Hmm I wonder how I could make it so space isn't the same....The code the other guy gave me about basing on the previous acsii is good, but I don't understand how to decrypt...

I still have once question, how long did it take? When did you start trying to decrypt?

It took me maybe the last 20 minutes, and I wrote my own program to do it. You said that its based on a number that the user enters. That made me assume that each character is encrypted with that same number. It really would have been a lot more difficult if you used different numbers for each character (as I said, switching between the ascii values of the characters in 'pimentos' would have added enough of a variation that your algorithm would have been quite a bit more difficult to crack).

**WaR_MaN3** · Dec 14th, 2002, 01:54 PM

Yeah see the problem is...If I didn't give that away...nor did I give tons of samples, NOR did I give the answers to the samples, and I did post some of the encryption in one of my posts...except like I said I changed it...THEN it would of been hard...So do you think its good...based on all the things I gave you all.

Please crack this though:
ñí¹ôõÿ

Thanks,
WaR_MaN3

**Hu Flung Dung** · Dec 14th, 2002, 02:05 PM

eat-this

This time, I just used a for-loop and added every number between 0 and 255 to each character, so I had 255 different strings. I just read through them all and found something similar to that.

There, are you happy now?

**WaR_MaN3** · Dec 14th, 2002, 02:06 PM

cheater : )
can you post the code?

Also can you help me make a better encryption on a password?

**WaR_MaN3** · Dec 14th, 2002, 02:09 PM

Oh....I don't think so..I forgot, another encryption I made...

Crack this: (VERY HARD)
[Y`[VJYHJR[OPZ

But I still need a password encryption...And the loop through 0-255 but anyway..

Thanks,
WaR_MaN3

**Hu Flung Dung** · Dec 14th, 2002, 02:11 PM

Originally posted by WaR_MaN3
cheater : )
can you post the code?

Also can you help me make a better encryption on a password?

Sorry, I never saved it. It was something like:

Code:

dim A as integer 
dim B as integer 
dim intCounter as integer 

for a = 0 to 255

     for b = 1 to len(Text1.text)

          intcounter = asc(mid(text1.text, b, 1)) + a
          if intcounter > 255 then intcounter = intcounter - 255

          text2.text = text2.text & chr(intcounter)

     next b

     text2.text = text2.text & vbcrlf

next a

Anyway, if you want a good algorithm, I'm sure www.planetsourcecode.com could provide better algorithms than any I could make up right off the bat.

EDIT:

Just changed the code a little

**WaR_MaN3** · Dec 14th, 2002, 02:15 PM

error...but

'Quoted'
Oh....I don't think so..I forgot, another encryption I made...

Crack this: (VERY HARD)
[Y`[VJYHJR[OPZ

But I still need a password encryption...I need help creating one if you can...Thanks!

Thanks,
WaR_MaN3

**Hu Flung Dung** · Dec 14th, 2002, 02:19 PM

Originally posted by WaR_MaN3
error...but

'Quoted'
Oh....I don't think so..I forgot, another encryption I made...

Crack this: (VERY HARD)
[Y`[VJYHJR[OPZ

But I still need a password encryption...I need help creating one if you can...Thanks!

Thanks,
WaR_MaN3

try to crack this9

Sorry, that code I gave you at first was buggy. I fixed the bugs in it. Just make sure the text boxes have 'multiline' = true and scrollbars.

Why dont you go check www.planetsourcecode.com for password encryption algorithms?

**WaR_MaN3** · Dec 14th, 2002, 02:27 PM

How did you crack that?

But see when I just download codes..it does nothing good for me...Can you teach me how to make a password one? And explain?

If you could do this I would be very happy and learn a lot more...

Thanks,
WaR_MaN3

**Hu Flung Dung** · Dec 14th, 2002, 02:33 PM

Originally posted by WaR_MaN3
How did you crack that?

But see when I just download codes..it does nothing good for me...Can you teach me how to make a password one? And explain?

If you could do this I would be very happy and learn a lot more...

Thanks,
WaR_MaN3

Use the code snippet I provided (I edited that post, and fixed the bugs in it). Just draw 2 text boxes and a command on the form, sets their multiline and scrollbar properties, and put that code in the event for the command button. It will take a while (20 seconds?) but text2 will contain 256 different strings. Just read though all of them.

I'll be back later today with the algorithm I use for my apps, and I'll tell you how it works. But I really think its better if you study the code from www.planetsourcecode.com.

**WaR_MaN3** · Dec 14th, 2002, 02:38 PM

No but you don't get it...the one where I said crack this or whatever was BACKWARDS and I added 380 or something instead of 0-225....so how did you know I did it above 255? I also did it backwards...Instead of encrypt I clicked decrypt...

Thanks,
WaR_MaN3

**BuggyProgrammer** · Dec 14th, 2002, 02:38 PM

passwords should not be encrypted, but be hashed. all you do is hash the password, then when you want to check the password you hash THEIR entry of the password and check it with the hashed password in the database.

since hashes should have unique strings, and they are not reversible, it is a very safe way of storing and checking passwords.

Even if someone somehow got hold of the hashed passwords they still could not generate the original password from it.

Search PSCode.com or these boards for hashing algorithms.

**WaR_MaN3** · Dec 14th, 2002, 03:00 PM

Never Mind about fixing up a program about passwords...I found one and its uber leet. If you want to see if you can crack it, then tell me...But see I still don't get this one...This is FAR more complex than mine was...so I'm like on the ground while this thing is higher than everest. But I guess I'll just study it...Because encryption programs are very interesting for me.

Thanks,
WaR_MaN3

**Hu Flung Dung** · Dec 14th, 2002, 03:01 PM

Originally posted by WaR_MaN3
No but you don't get it...the one where I said crack this or whatever was BACKWARDS and I added 380 or something instead of 0-225....so how did you know I did it above 255? I also did it backwards...Instead of encrypt I clicked decrypt...

Thanks,
WaR_MaN3

Think about it for a moment. All characters have an ascii value between 0 and 255.

Say you have the character 55 (a number 7). If you add 380, you get 435. I assume your program would take that 435 and subtract 255 to get 180. Instead of adding 380, you could just add 125 to the original 55 and get the same answer, 180.

The code snippet I gave still works fine. Go ahead and play around with it.

**Mc Brain** · Dec 14th, 2002, 03:01 PM

You should provide the codes in a Text file, which can be seen correctly. I don't think these images would be easier to crack:

**Mc Brain** · Dec 14th, 2002, 03:03 PM

I mean... does the second image (despite it's only one) means that the three first characters are the same??

**Hu Flung Dung** · Dec 14th, 2002, 03:07 PM

Originally posted by Mc Brain
I mean... does the second image (despite it's only one) means that the three first characters are the same??

Are you using a browser that allows you to copy and paste text?
Their not like the jpg's you posted. The examples he gave are text that can be selected, copied, and pasted into a text file, which can then be read by a hex-editor or a vb program to get the ascii values for each character.

**WaR_MaN3** · Dec 14th, 2002, 04:46 PM

Oh Hu...I got one it'll take a very long time to crack...

ª™©R¬ž™ŸU´šUœS«¡¡›

Ouch...that'll take a while...
Good Luck...

Thanks,
WaR_MaN3

**DiGiTaIErRoR** · Dec 14th, 2002, 05:46 PM

Here's some far more secure encryption:

"hello" = 8CD7AF63B2
"woo crack me!" = 93DDAC2FBEBDEE1D394456E45D
"And it just keeps going" = A5DCA72FB4BBAF1427174FA117F48A99834672BF1130A3

And that's some very basic encryption.

**WaR_MaN3** · Dec 14th, 2002, 06:03 PM

Well...I don't understand how its far more complex when no one cracks this...Now if someone cracks it..like you...i'll believe it. Can you give me code for that encryption? I'm trying to make a very good encryption with many options...like hex or whatever that is...encrypting files...and alot of other stuff...please post code please if you can.

Thanks,
WaR_MaN3

**Negative0** · Dec 14th, 2002, 07:38 PM

Provide some sample strings and their resulting encrypted versions. Then provide a string that is encrypted and see if someone can crack it. That will be a true test of the strength of your encryption.

Also, because noone has taken the time to crack your code does not mean it is secure.

**WaR_MaN3** · Dec 14th, 2002, 08:11 PM

Whats the point of giving them samples and their decrypted part? That is like telling them the answer...I'll give samples that are encrpyted...but not the encrypted + decrypted: (I will just wrtie a paragraph)

ì2>é<?=íCä25IAB2;3ñ/Bî-;=ëE7@íIòCíI<;7í;5ëC@ì58A3ïB=C¿A?E3í2;BI3@Bë>7ëB7-;ýÜ"68ABòA=ï10DFíC33>÷ûûCCMí;3A2:íB71<ðA>üç6ÚíO.Bó6746=8ìB74Aï0@=)íCJ;3A;4ñE= D83ðíð,65!Bïú3>FíB82<ìî/=>ñBí469M9íE<üÿûî@7:;9î=618íEG.Dóô=ì3@6<6ê7Cê4713ýû";6Bñ7Aî-î?2Eî/<38G>[6?CíBI=4ð@=î44ïD=Cä>1cAí<AîL=Cï-A6ì/F/A?43ûïJ67?8îF67Bê7Dë3<5C7ƒû

There
Thanks,
WaR_MaN3

**nemaroller** · Dec 15th, 2002, 12:25 AM

Just buy a book on encryption.. and another book on computer encryption algorithms...

There's many ways to approach it... anything you've seen here would most likely be decrypted by an expert within minutes...

It's kinda like the guy you call to unlock your car when you locked the keys in it.... and he walks up and says hi, pulls out a shimmy, coughs once... and hands you your keys.... and you hand him $50...

Now, it would probably take you or me a few coat hangers and at least a half hour to accomplish the same task... and probably would screw up the weatherstripping or the door lock in the process...

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