Help with generating serial

[raduga_fb]

You need to eat much more bread.

Who said that pass_1 & pass_2 should be name & email? They are already mentioned above.

string pass_1 = "?????" <- 5 digits = Li***

string pass_2 = "??????" <- 6 digits = To****

[TempoMat]

I did some tests on step 2 with different values for the VolumInfoA
2. AK2 = the Hex2SignedDec(VolumeInfoA("C:\")) from Res2
and found out that if the value of the VolumeSerialNumber is positive i.e. below 0x80000000 then the converted value has a space(0x20) instead of "+" before it.

Final thing to note is that the RegCode should always be generated on the target computer. Then the 3 checks the program does are all related to the result from Step2

First it gets the Hex2SignedDec(VoluemInfoA("C:\")=>VolumeSerialNum then decrypts the RegCode and the ActivKey and final does the following comparisons:

Is VolumeSerialNum=Res2 from decrypted RegCode?
Is VolumeSerialNum=AK2 from the decrypted ActivKey?
Is Res2=AK2?

[T-rad]

Actually the RegCode is useless for generating a working key. also check 3 is redundant. is only checking if the VolumeSerialNum from RES2 is the same VolumeSerialNum from AK2. If check 1 & 2 pass, 3 has no choice but to pass

[TempoMat]

Originally Posted by T-rad

... also check 3 is redundant. is only checking if the VolumeSerialNum from RES2 is the same VolumeSerialNum from AK2. If check 1 & 2 pass, 3 has no choice but to pass

I agree with you. Maybe the programmer/vendor is paranoid.

Originally Posted by T-rad

Actually the RegCode is useless for generating a working key....

Not for the programmer/vendor, then he will need the RegCode in order to extract from it the RandomBytes and the VolumeSerialNum to generate the corresponding correct key for the registrant.

A Keygen can for instance have the option for the user to enter a Regcode (Registation code) from a different machine and generate the corresponding ActivKey (Activation Key).
Also just for a gemmick, it could include options to decode the RegCode and ActiveKey to compare the RandomBytes and the VolumeSerialNum.

[foil]

Originally Posted by raduga_fb

You need to eat much more bread.

Who said that pass_1 & pass_2 should be name & email? They are already mentioned above.

string pass_1 = "?????" <- 5 digits = Li***

string pass_2 = "??????" <- 6 digits = To****

Hi @raduga_fb
Ahhh, okay, that worked! I do need much more knowledge with encryption and decryption. I am reading lots of material about the subjects, and am rewriting your code by hand on paper to try to understand the flow a little better

I did receive an error on a second test machine about the Registration Code not being a valid Base64 string, but I'll cross that bridge later.

Thank you again for all of your help, I haven't ever put much effort into reversing keys!

Originally Posted by TempoMat

I did some tests on step 2 with different values for the VolumInfoA
2. AK2 = the Hex2SignedDec(VolumeInfoA("C:\")) from Res2
and found out that if the value of the VolumeSerialNumber is positive i.e. below 0x80000000 then the converted value has a space(0x20) instead of "+" before it.

Final thing to note is that the RegCode should always be generated on the target computer. Then the 3 checks the program does are all related to the result from Step2

First it gets the Hex2SignedDec(VoluemInfoA("C:\")=>VolumeSerialNum then decrypts the RegCode and the ActivKey and final does the following comparisons:

Is VolumeSerialNum=Res2 from decrypted RegCode?
Is VolumeSerialNum=AK2 from the decrypted ActivKey?
Is Res2=AK2?

I appreciate all of your help as well, @TempoMat !
I am studying over everything that everyone has told me and am not going to give up on it! Thank you so much