Open source Windows 7 product key checker

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Yeah you can just increase the values until it works, allthough i think the C++ uses all proper lengths, no need to gamble

 

ill mess around with it then ill tell you what happens

i was thinking instead of a number like 40 or 60 there put a variable then have it parse the data differently for every key

 

Code:

            Dim pid As String = enc.GetString(pidb).Replace(vbNullChar, "") 'PID
            Dim epid As String = enc.GetString(core, 8, 96).Replace(vbNullChar, "") 'Extendend PID 
            Dim aid As String = enc.GetString(core, 136, 72).Replace(vbNullChar, "") 'Activation ID 
            Dim edi As String = enc.GetString(core, 280, 256).Replace(vbNullChar, "") 'Edition
            Dim  As String = enc.GetString(core, 888, 64).Replace(vbNullChar, "") 'SubType
            Dim lit As String = enc.GetString(core, 1016, 64).Replace(vbNullChar, "") 'License Type
            Dim lic As String = enc.GetString(core, 1144, 64).Replace(vbNullChar, "") 'License Channel
            Dim cid As String = epid.Substring(8, 3) 'Crypto ID

<sub>Editing it like above seems to work as well

how are the hex values for the C# version calculated? do i overlook something, or what? just don't get it i guess...</sub>

 

<sub>that works fine for me

i dont know how its done in C# MasterDisaster is the one to ask

im the vb.net guy</sub>

 

The C# version seems to have been off a liitle sinse the beginning, guess that is what was putting me on the wrong track

Code:

                string pid = enc.GetString(gpid).Replace("\0", ""); //PID
                string eid = enc.GetString(npid, 0x08, 0x68).Replace("\0", ""); //Extendend PID
                string aid = enc.GetString(npid, 0x88, 0x48).Replace("\0", ""); //Activation ID
                string edi = enc.GetString(npid, 0x118, 0x18).Replace("\0", ""); //Edition Type 
                string sub = enc.GetString(npid, 0x378, 0x18).Replace("\0", ""); //Edition ID
                string lit = enc.GetString(npid, 0x3F8, 0x18).Replace("\0", ""); //Key Type 
                string lic = enc.GetString(npid, 0x478, 0x10).Replace("\0", ""); //EULA
                string cid = eid.Substring(8, 3); //Crypto ID

Code:

                string pid = enc.GetString(gpid).Replace("\0", ""); //PID
                string eid = enc.GetString(npid, 0x08, 0x60).Replace("\0", ""); //Extendend PID
                string aid = enc.GetString(npid, 0x88, 0x48).Replace("\0", ""); //Activation ID
                string edi = enc.GetString(npid, 0x118, 0x100).Replace("\0", ""); //Edition Type 
                string sub = enc.GetString(npid, 0x378, 0x40).Replace("\0", ""); //Edition ID
                string lit = enc.GetString(npid, 0x3F8, 0x40).Replace("\0", ""); //Key Type 
                string lic = enc.GetString(npid, 0x478, 0x40).Replace("\0", ""); //EULA
                string cid = eid.Substring(8, 3); //Crypto ID

 

I came up with those values by viewing the DigitalProductId4 key in the registry. The C++ struct values seem to be safe. The string "ServerMediumBusinessManagement" seems to be the longest string for the EditionID, so instead of assigning 256 bytes that can hold 128 chars we can assign 64 bytes that can hold 32 chars. For the SubType it is enough to assign 18 bytes because it is of fixed length "X15-39278". The License Channel and License Type do not require 64 bytes, 32 bytes would be enough.

Extended PID - 96 0x60
Activation ID - 72 0x48
Edition ID - 64 0x32
Sub Type - 18 0x12
License Channel - 32 0x20
Licence Type - 32 0x20

 

@MasterDisaster,


License Channel it to short as well, eg 'Retail:TB:Eval' is shortened to 'Retail:TB:Ev'
Anyway, i believe the C++ code uses proper lengths, so i gonna use that values

 

This function returns a null terminated string

Code:

static string GetString(byte[] bytes, int index)
{
    int n = index;
    while (!(bytes[n] == 0 && bytes[n + 1] == 0)) n++;
    return Encoding.ASCII.GetString(bytes, index, n - index).Replace("\0", "");
}

Replace your existing code with this one. Looks a bit cleaner than the previous one.

Code:

string pid = GetString(gpid, 0x0000);
string eid = GetString(npid, 0x0008);
string aid = GetString(npid, 0x0088);
string edi = GetString(npid, 0x0118);
string sub = GetString(npid, 0x0378);
string lit = GetString(npid, 0x03F8);
string lic = GetString(npid, 0x0478);
string cid = eid.Substring(8, 3);

 

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@PAYMYRENT, can you please share the program, thank you.

 

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ill have you test it if you want

 

Let me guess, your program runs from a cd.

 

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PAYMYRENT, thank you very much, add a reputation.

 

ha no it already does that