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Old 03-12-2010, 16:19   #46 (permalink)
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@elcapitel

Bug fixed, We have now correct last NCK code =)

B.R,
VM_Hacker
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Old 03-12-2010, 16:22   #47 (permalink)
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how to calculate nck for zte phones such as x760.
This is based on the whole theory by elcapitel, i have only realized of one little step but most of the work was done by elcapitel, we must thank him for this wonderful research.
Let's begin explaining how it is done, but if you have read this whole thread you should know most of what i am going to explain here.
let's take the following imei (only important 12 digits are used)

000002 243814

our first step will be to sum all digits: 0+0+0+0+0+2+2+4+3+8+1+4=24
then we will calculate a line which is the result of our sum 24 by each digit of imei.

0x24=0
0x24=0
0x24=0
0x24=0
0x24=0
2x24=48
2x24=48
4x24=96
3x24=72
8x24=192
1x24=24
4x24=48

this way we have:
000008 862246

now the second step is based on this chart:

Code:
1 ............... 8
2 ............... 6
3 ............... 4
4 ............... 2
5 ............... 0
6 ............... 8
7 ............... 6
8 ............... 4
9 ............... 2
0 ............... 0
but with a little trick, we have to tak our imei and split it in two halves like this:
000002 243814
and now based on the chart we have two make another line based on the digits in the chart which corresponds to the digits on the imei, and inverse the order. it sounds a little confusing but i know you will understand. so for our imei
000002 243814
we have:
284426 600000
pay attention to halves colors so you can understand it better. you can see, for instance, that for the number 2 you get number 6 and so on.

now third step is to use the following line:
688950 000000
which is the magic line you get when you calculate the nck with all 0 in imei.

if we put all three lines in order we get:
000008 862246
284426 600000
688950 000000
we can easily sum digit by digit, and in this case we get this:
862374 462246
which for our surprise will be the nck for the given imei.

so for imei 000002 243814 we get nck 862374 462246 i have tried we a couple of examples and the result is the same, don't have delphi here with me now but sure someone can code this algo and make more tests to see if everything is correct.

this is another test i did:
000012 243814 --> imei sum: 1+2+2+4+3+8+1+4=25
000050 005050 --> firs line
284426 680000 --> second line
688950 000000 --> third line
862326 685050 --> nck

once again thanks for all interested and specially to elcapitel for his hours dedicated to understand this.

luck;
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Old 03-12-2010, 16:27   #48 (permalink)
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@y3kt

Thanks

@elcapitel

Big Thanks =)

maybe tomorrow we'll have full working ZTE NCK Calculator i will send it to both of you in private =)
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Old 03-12-2010, 16:46   #49 (permalink)
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yes friend, but please ... The program is not free please ....

Do not kill the market

br
elcapitel



Quote:
Originally Posted by VM_Hacker View Post
@y3kt

Thanks

@elcapitel

Big Thanks =)

maybe tomorrow we'll have full working ZTE NCK Calculator i will send it to both of you in private =)
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Old 03-12-2010, 16:57   #50 (permalink)
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in the second step i just explained things harder i realized now it is simpler just follow the chart digit by digit until you get full line, then reverse the whole line to sum it with the others two and thats it, luck

ps: and please this is all for educational purposes only i know that many like myself included are more than happy to know how a code is calculated but we must remember we eat from this business
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Old 03-12-2010, 16:58   #51 (permalink)
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@elcapitel

yes, i told you already =)

Great Job! One more thanks also to boucettay for the nck code samples and the explanation too
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Old 03-12-2010, 17:01   #52 (permalink)
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@y3kt

Thanks! no worries elcapitel told me already what is the best move

B.R,
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Old 03-12-2010, 17:05   #53 (permalink)
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yeah my great friend @y3kt. This is for @ALL and especially for those people who thought I could not find the algorithm.
Here an example that I have discovered the precise algorithm for calculating the NCK in zte as the x760.

It is also a proof that if you show real interest the you can achieve anything. :-p


Now, the program will not be posted at least by me at any time for free. I will not kill the market. It was never my intention.


br
elcapitel





Quote:
Originally Posted by y3kt View Post
how to calculate nck for zte phones such as x760.
This is based on the whole theory by elcapitel, i have only realized of one little step but most of the work was done by elcapitel, we must thank him for this wonderful research.
Let's begin explaining how it is done, but if you have read this whole thread you should know most of what i am going to explain here.
let's take the following imei (only important 12 digits are used)

000002 243814

our first step will be to sum all digits: 0+0+0+0+0+2+2+4+3+8+1+4=24
then we will calculate a line which is the result of our sum 24 by each digit of imei.

0x24=0
0x24=0
0x24=0
0x24=0
0x24=0
2x24=48
2x24=48
4x24=96
3x24=72
8x24=192
1x24=24
4x24=48

this way we have:
000008 862246

now the second step is based on this chart:

Code:
1 ............... 8
2 ............... 6
3 ............... 4
4 ............... 2
5 ............... 0
6 ............... 8
7 ............... 6
8 ............... 4
9 ............... 2
0 ............... 0
but with a little trick, we have to tak our imei and split it in two halves like this:
000002 243814
and now based on the chart we have two make another line based on the digits in the chart which corresponds to the digits on the imei, and inverse the order. it sounds a little confusing but i know you will understand. so for our imei
000002 243814
we have:
284426 600000
pay attention to halves colors so you can understand it better. you can see, for instance, that for the number 2 you get number 6 and so on.

now third step is to use the following line:
688950 000000
which is the magic line you get when you calculate the nck with all 0 in imei.

if we put all three lines in order we get:
000008 862246
284426 600000
688950 000000
we can easily sum digit by digit, and in this case we get this:
862374 462246
which for our surprise will be the nck for the given imei.

so for imei 000002 243814 we get nck 862374 462246 i have tried we a couple of examples and the result is the same, don't have delphi here with me now but sure someone can code this algo and make more tests to see if everything is correct.

this is another test i did:
000012 243814 --> imei sum: 1+2+2+4+3+8+1+4=25
000050 005050 --> firs line
284426 680000 --> second line
688950 000000 --> third line
862326 685050 --> nck

once again thanks for all interested and specially to elcapitel for his hours dedicated to understand this.

luck;
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Old 03-12-2010, 17:16   #54 (permalink)
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Quote:
Originally Posted by elcapitel View Post
Of this imei: 123456789012347, only is important: 456789012347

1 ............... 8
2 ............... 6
3 ............... 4
4 ............... 2
5 ............... 0
6 ............... 8
7 ............... 6
8 ............... 4
9 ............... 2
0 ............... 0

______246802

______987654 (first 6 digits reversed)
456789012347

4+5+6+7+8+9+0+1+2+3+4+7=56

0*56= 0 | 0+2=2
1*56=56 | 56+4=60
2*56=112 | 112+6=118
3*56=168 | 168+8=176
4*56=224 | 224+0=224
7*56=392 | 392+2=394
With my theory the NCK is: XXXXXX208644

Now, calculating real nck with PolarBox2



608714208644 -> NCK code with PB2
______208644 -> With my theory.



best regards
elcapitel

Quote:
Originally Posted by VM_Hacker View Post
I made some fast program 'ZTE NCK half cook calc' based on research of elcapitel =)



Just simply enter the first 6 digits of IMEI starting at the 4th number 123 456789012347 then you'll get the last 6 digits of NCK code [not 100% correct]

download link: RapidShare: 1-CLICK Web hosting - Easy Filehosting

Note: This software is just for R&D meaning not 100% working.

B.R,
VM_Hacker

Sorry But That is Not correct Better find other way To decrypct Nck

B,r Souhail_gsm
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Old 03-12-2010, 17:23   #55 (permalink)
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@Souhail

have you read my post? =)

Quote:
Note: This software is just for R&D meaning not 100% working.
last few hours we found out already how to calc correct nck =)

Thanks!

B.R,
VM_Hacker
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Old 03-12-2010, 17:27   #56 (permalink)
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Quote:
Originally Posted by VM_Hacker View Post
@Souhail

have you read my post? =)



last few hours we found out already how to calc correct nck =)

Thanks!

B.R,
VM_Hacker
Yes i have read all post carfuly And for that i have say for all to find other

way for don't loose your time
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Old 03-12-2010, 17:28   #57 (permalink)
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Old 03-12-2010, 17:31   #58 (permalink)
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@Souhail

Thanks Bro =)

B.R,
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Old 03-12-2010, 17:36   #59 (permalink)
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Quote:
Originally Posted by Souhail View Post
Yes i have read all post carfuly And for that i have say for all to find other

way for don't loose your time
you shouldn't have read quite well friend, otherwise you would know it was not a loss of time
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Old 03-12-2010, 17:38   #60 (permalink)
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you shouldn't have read quite well friend, otherwise you would know it was not a loss of time

That is a graet work what you do but not with this way that what i mean
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