SL3NCK - Calculate NCK's from TARGET_HASH and MASTER_SP_CODE

[Kyan]

Hi, SL3NCK calculates the 7 NCK's levels used for unlocking SL3 phones.

SL3NCK("0000000000000000000000000000000000000000", "080803080307030003010002020305")

_output:

#pw+283037116581614+1#
#pw+235518432205471+2#
#pw+595388505163502+3#
#pw+415333744058839+4#
#pw+259299316395048+5#
#pw+467723677207791+6#
#pw+690485095019780+7#

You can test run and see is the same code output as in the following websites:

• http://www.francesco-pompili.it/Hash2Nck.aspx
• http://nokia-sl3.com/nck.php

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#include <Crypt.au3>

; #Function# ===========================================================================================================
; Name...........: SL3NCK
; Description ...: Calculates 7 NCK levels for SL3.
; Syntax.........: SL3NCK("TARGET_HASH","MASTER_SP_CODE")
; Return values .: string with 7 levels NCK's.
; Author ........: kyan (autoIT code), oOXTCOo (PHP code).
; Remarks .......: $TargetHash is a string with 40 hex chars. $MasterSP is a string with 30 digits.
; Related .......: SimlFeistel(), _packH()
; Requeires .....: #include <Crypt.au3>
; ===============================================================================================================================
Func SL3NCK($TargetHash, $MasterSP)
    $result = ''
    $MasterSP = '000000' & StringMid($MasterSP, 0 + 1, 24)
    For $i = 1 To 7
        $hash = _packH('0' & $i & $TargetHash)
        $hash = StringTrimLeft(StringUpper(_Crypt_HashData($hash, $CALG_SHA1)), 2)
        $precode8 = StringMid($MasterSP, 0 + 1, 16)
        $precode7 = StringMid($MasterSP, 17 + 1, 30)
        For $magic = 0 To 1
            $sh = _packH('0' & $magic & StringMid($hash, 0 + 1, 32) & $precode8)
            $sh = StringTrimLeft(StringUpper(_Crypt_HashData($sh, $CALG_SHA1)), 2)
            $precode = SimlFeistel($sh, $precode7)
            $precode7 = $precode

            $sh = _packH('0' & $magic & StringMid($hash, 0 + 1, 32) & $precode)
            $sh = StringTrimLeft(StringUpper(_Crypt_HashData($sh, $CALG_SHA1), 2)
            $precode = SimlFeistel($sh, $precode8, 8)
            $precode8 = $precode
        Next
        $final = $precode8 & $precode7
        $x = 1
        $nck = ''
        For $y = 1 To 15
            $nck = $nck & StringMid($final, $x + 1, 1)
            $x += 2
        Next
        $result &= '#pw+' & $nck & '+' & $i & '#' & @CRLF
    Next
    Return $result
EndFunc   ;==>SL3NCK

Func SimlFeistel($sh, $precode, $bytes = 7)
    Local $result = '', $j = 0, $nck = '', $nck2 = ''
    While ($j < ($bytes * 2))
        $nck = StringMid($sh, $j + 1, 1) & StringMid($sh, $j + 2, 1)
        $nck2 = StringMid($precode, $j + 1, 1) + StringMid($precode, $j + 2, 1)
        $prenck = Mod((Dec($nck) + Dec($nck2)), 10)
        $result = $result & '0' & $prenck
        $j += 2
    WEnd
    Return $result
EndFunc   ;==>SimlFeistel

Func _packH($sInput)
    Local $sReply = ""
    For $xx = 1 To StringLen($sInput) Step 2
        $sReply &= Chr(Dec(StringMid($sInput, $xx, 2)))
    Next
    Return $sReply
EndFunc   ;==>_packH by Luigi

Hope it comes handy for someone

PS: You can't unlock a phone only with this. Google is your friend.

Edited February 25, 2015 by Kyan