ground up refactor!

2020-03-29 23:54:41 -07:00
1 parent 6a2ab0d873
commit 7c2960e1d7
@@ -0,0 +1,72 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Text;
+
+namespace FrappeMocha.Keygen
+{
+    public abstract class KeygenBase
+    {
+        public const string CompanyLicense = "Company License";
+        public const string SingleUserLicense = "Single User License";
+
+        protected string Platform;
+        protected int ByteEncoding = 0;
+        public List<KeygenProduct> Products = new List<KeygenProduct>();
+
+        public abstract string Generate(int type, string paramCompany, LicenseTypes license);
+        public abstract bool Check(string paramLicenseKey, string paramCompany, LicenseTypes license);
+
+
+        public virtual List<string> GenerateLicencetypes(KeygenProduct p)
+        {
+            List<string> licenses = new List<string>();
+            licenses.Add(CompanyLicense);
+            licenses.Add(SingleUserLicense);
+            return licenses;
+        }
+
+        public override string ToString()
+        {
+            return Platform;
+        }
+
+        public byte[] StrToByteArray(string str)
+        {
+            try
+            {
+                return Encoding.GetEncoding(this.ByteEncoding).GetBytes(str);
+            }
+            catch (Exception)
+            {
+                try
+                {
+                    return Encoding.GetEncoding(0).GetBytes(str);
+                }
+                catch (Exception)
+                {
+                    return new byte[1] { (byte)63 };
+                }
+            }
+        }
+
+        public string ByteArrayToStr(byte[] barr, int index, int length)
+        {
+            try
+            {
+                return Encoding.GetEncoding(this.ByteEncoding).GetString(barr, index, length);
+            }
+            catch (Exception)
+            {
+                try
+                {
+                    return Encoding.GetEncoding(0).GetString(barr, index, length);
+                }
+                catch (Exception)
+                {
+                    return "?";
+                }
+            }
+        }
+    }
+}
@@ -0,0 +1,35 @@
+using System.Collections.Generic;
+
+namespace FrappeMocha.Keygen
+{
+    public class KeygenProduct
+    {
+        public LicenseTypes Licence;
+        public string Description;
+
+        public KeygenProduct(LicenseTypes licence, string description, string platform)
+        {
+            Licence = licence;
+            Description = description + " for " + platform;
+        }
+
+        public override string ToString()
+        {
+            return Description;
+        }
+
+        public override bool Equals(object obj)
+        {
+            return obj is KeygenProduct product && Description == product.Description || 
+                   obj is string description && description == Description;
+        }
+
+        public override int GetHashCode()
+        {
+            var hashCode = -1651123971;
+            hashCode = hashCode * -1521134295 + Licence.GetHashCode();
+            hashCode = hashCode * -1521134295 + EqualityComparer<string>.Default.GetHashCode(Description);
+            return hashCode;
+        }
+    }
+}
@@ -0,0 +1,30 @@
+namespace FrappeMocha.Keygen
+{
+    public enum LicenseTypes
+    {
+        Windows3270 = 0x8c,
+        Windows5250 = 0x80,
+        Windows3812 = 0xa0,
+        WindowsTelnet = 0x9b,
+
+        Java3270 = 0x1b + 2,
+        Java5250 = 0x1b + 2,
+        JavaTelnet = 0x1b,
+
+        Mac3270 = 0x5d,
+        Mac5250 = 0x16,
+        Mac3812 = 0x22,
+        MacTelnet = 0x5e,
+        MacKeyboard = 0xa5,
+
+        JavaScript3270 = 0xb3,
+        JavaScript5250 = 0xb2,
+        JavaScriptTelnet = 0xb4,
+
+        Android3270 = 0x94,
+        Android5250 = 0x91,
+        AndroidTelnet = 0x96,
+        AndroidVnc = 0x92,
+        AndroidBarcode = 0x9c,
+    }
+}
@@ -0,0 +1,101 @@
+using System;
+
+namespace FrappeMocha.Keygen.Platforms
+{
+    public class PlatformAndroid : KeygenBase
+    {
+        public PlatformAndroid()
+        {
+            Platform = "Android";
+            Products.Add(new KeygenProduct(LicenseTypes.Android3270, "TN3270", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.Android5250, "TN5250", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.AndroidTelnet, "TN3812", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.AndroidVnc, "VNC", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.AndroidBarcode, "Barcode", Platform));
+        }
+
+        /**
+         * This was also a piece of cake since PlatformJava is the underlying tech on PlatformAndroid
+         * The Dex object engine keept pretty good tabs on the types and var names as well!
+         */
+        public override string Generate(int itype, string paramCompany, LicenseTypes license)
+        {
+            char type = (char)(itype + '0');
+            string paramLicencekey = type.ToString();
+            long sum = 0;
+            byte[] byteArray = StrToByteArray(paramCompany);
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if ((long)byteArray[index] >= 'A' && (long)byteArray[index] <= 'Z')
+                    byteArray[index] += 32; // this is basically str.toLower()
+            }
+
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if ((ulong)byteArray[index] >= 'A' && (ulong)byteArray[index] <= 'z')
+                {
+                    sum += byteArray[index] + (uint)license;
+                }
+            }
+            sum = sum * paramLicencekey[0];
+            sum = sum * (sum & byte.MaxValue) & ushort.MaxValue;
+            if (sum < 100U)
+                sum = 2728U;
+
+            paramLicencekey = (paramLicencekey[0].ToString() + sum) + '-' +
+                           (Int32)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;
+
+            return paramLicencekey;
+        }
+
+        /**
+         * Straight outta da Dex
+         */
+        public override bool Check(string paramLicenseKey, string paramCompany, LicenseTypes license)
+        {
+            byte[] bArr = new byte[255];
+            byte[] bArr2 = new byte[255];
+            if (paramCompany.Length < 2 || paramLicenseKey.Length < 2)
+            {
+                return false;
+            }
+            for (int i = 0; i < paramLicenseKey.Length; i++)
+            {
+                bArr2[i] = (byte)paramLicenseKey[i];
+            }
+            for (int i2 = 0; i2 < paramCompany.Length; i2++)
+            {
+                bArr[i2] = (byte)paramCompany[i2];
+                if (paramCompany[i2] >= 'A' && paramCompany[i2] <= 'Z')
+                {
+                    bArr[i2] = (byte)(bArr[i2] + 32);
+                }
+            }
+            long j = 0;
+            for (int i3 = 0; i3 < paramCompany.Length; i3++)
+            {
+                if (bArr[i3] >= 65 && bArr[i3] <= 122)
+                {
+                    j += (bArr[i3] + (long)license);
+                }
+            }
+            long j2 = j * bArr2[0];
+            long j3 = (j2 * (j2 & 255)) & 65535;
+            if (j3 < 100)
+            {
+                j3 = 2728;
+            }
+            string sb = "";
+            sb += paramLicenseKey[0];
+            sb += (object)j3;
+            if (paramLicenseKey.StartsWith(sb))
+            {
+                // lictype = bArr2[0] - 48;
+                // is_lite2 = false;
+                return true;
+            }
+            // lictype = -1;
+            return false;
+        }
+    }
+}
@@ -0,0 +1,94 @@
+using System.Collections.Generic;
+
+namespace FrappeMocha.Keygen.Platforms
+{
+    public class PlatformJava : KeygenBase
+    {
+        public PlatformJava()
+        {
+            Platform = "Java";
+            Products.Add(new KeygenProduct(LicenseTypes.Java3270, "TN3270", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.Java5250, "TN5250", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.JavaTelnet, "Telnet", Platform));
+        }
+
+        public override List<string> GenerateLicencetypes(KeygenProduct p)
+        {
+            List<string> types = new List<string>();
+            for (int i = 0; i < 5; i++)
+            {
+                types.Add(((char)(i + 'A')).ToString());
+            }
+            return types;
+        }
+
+        /**
+         * Pretty stright forward implementation as well
+         * .NET is just a copy of PlatformJava afterall
+         */
+        public override string Generate(int itype, string paramCompany, LicenseTypes license)
+        {
+            char type = (char)(itype + 'A');
+            string paramLicencekey = type.ToString() + '@';
+            int sum = 0;
+
+            int i = 0;
+            while (i < paramCompany.Length)
+            {
+                if (paramCompany[i] > ' ')
+                {
+                    // 3270 and 5250 have a hardcoded 0x1b+2 here, we've just added it to the enum
+                    sum += paramCompany[i] + (int)license;
+                }
+                ++i;
+            }
+
+            sum = sum * paramLicencekey[0];
+            sum = sum * (sum & byte.MaxValue) & ushort.MaxValue;
+            paramLicencekey += sum.ToString();
+            return paramLicencekey;
+        }
+
+        /**
+         * Straight outta da JAR
+         */
+        public override bool Check(string paramLicenseKey, string paramCompany, LicenseTypes license)
+        {
+            int i = 0;
+            int n = 0;
+            while (i < paramCompany.Length)
+            {
+                if (paramCompany[i] > ' ')
+                {
+                    // 3270 and 5250 have a hardcoded 0x1b+2 here, we've just added it to the enum
+                    n += paramCompany[i] + (int)license;
+                }
+                ++i;
+            }
+            if (paramLicenseKey.Length > 0)
+            {
+                switch (paramLicenseKey[0])
+                {
+                    case 'A':
+                    case 'B':
+                    case 'C':
+                    case 'D':
+                    case 'E':
+                        break;
+
+                    default:
+                        return false;
+                }
+                int n2 = n * paramLicenseKey[0];
+                n2 = n2 * (n2 & 0xFF) & 0xFFFF;
+
+                string check = paramLicenseKey[0].ToString() + paramLicenseKey[1].ToString() + n2.ToString();
+                if (paramLicenseKey[1] == '@' && check == paramLicenseKey)
+                {
+                    return true;
+                }
+            }
+            return false;
+        }
+    }
+}
@@ -0,0 +1,83 @@
+using System;
+
+namespace FrappeMocha.Keygen.Platforms
+{
+    public class PlatformJavaScript : KeygenBase
+    {
+        public PlatformJavaScript()
+        {
+            Platform = "Google Chrome";
+            Products.Add(new KeygenProduct(LicenseTypes.JavaScript3270, "TN3270", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.JavaScript5250, "TN5250", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.JavaScriptTelnet, "Telnet", Platform));
+        }
+
+        /**
+         * This one was fun as well
+         * Found out that the license must end with "45" in order to validate
+         */
+        public override string Generate(int itype, string paramCompany, LicenseTypes license)
+        {
+            char type = (char)(itype + '0');
+            string param_lickey = type.ToString();
+            ulong sum = 0;
+            byte[] byteArray = StrToByteArray(paramCompany);
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if (byteArray[index] >= 'A' && byteArray[index] <= 'Z')
+                    byteArray[index] += 32; // ASCII 'Space'
+            }
+
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if ((ulong)byteArray[index] >= 'A' && (ulong)byteArray[index] <= 'z')
+                {
+                    sum += byteArray[index] + (uint)license;
+                }
+            }
+            sum = sum * param_lickey[0];
+            sum = sum * (sum & byte.MaxValue) & ushort.MaxValue;
+            if (sum < 100U)
+                sum = 2728U;
+
+            param_lickey = (param_lickey[0].ToString() + sum) + '-' +
+                           (Int32)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds
+                           + "45"; // a little salt, as a treat
+
+            return param_lickey;
+        }
+
+        /**
+         * Straight outta da JS
+         */
+        public override bool Check(string paramLicenseKey, string paramCompany, LicenseTypes license)
+        {
+            ulong sum = 0;
+            byte[] byteArray = this.StrToByteArray(paramCompany);
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if ((ulong)byteArray[index] >= 65 && (ulong)byteArray[index] <= 90)
+                    byteArray[index] += 32;
+            }
+
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if ((ulong)byteArray[index] >= 65 && (ulong)byteArray[index] <= 122)
+                {
+                    sum += byteArray[index] + (uint)license;
+                }
+            }
+            sum = sum * paramLicenseKey[0];
+            sum = sum * (sum & byte.MaxValue) & ushort.MaxValue;
+            if (sum < 100U)
+                sum = 2728U;
+
+            if (!paramLicenseKey.StartsWith(paramLicenseKey[0].ToString() + sum) || !paramLicenseKey.EndsWith("45"))
+            {
+                return false;
+            }
+
+            return true;
+        }
+    }
+}
@@ -0,0 +1,140 @@
+using System.Collections.Generic;
+
+namespace FrappeMocha.Keygen.Platforms
+{
+    public class PlatformMac : KeygenBase
+    {
+        public PlatformMac()
+        {
+            Platform = "MacOSX";
+            Products.Add(new KeygenProduct(LicenseTypes.Mac3270, "TN3270", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.Mac5250, "TN5250", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.Mac3812, "TN3812", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.MacTelnet, "Telnet", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.MacKeyboard, "Keyboard", Platform));
+        }
+
+        public override List<string> GenerateLicencetypes(KeygenProduct p)
+        {
+            if (p.Licence != LicenseTypes.Mac3812 &&
+                p.Licence != LicenseTypes.MacTelnet &&
+                p.Licence != LicenseTypes.MacKeyboard)
+            {
+                return base.GenerateLicencetypes(p);
+            }
+            List<string> types = new List<string>();
+            types.Add("0");
+            return types;
+        }
+
+        public override string Generate(int type, string paramCompany, LicenseTypes license)
+        {
+            switch (license)
+            {
+                // Prefix Num
+                case LicenseTypes.Mac3270:
+                case LicenseTypes.Mac5250:
+                    return GeneratePrefixNumber(type, paramCompany, license);
+                
+                // Prefix Alpha
+                case LicenseTypes.Mac3812:
+                case LicenseTypes.MacTelnet:
+                case LicenseTypes.MacKeyboard:
+                    return GeneratePrefixAlpha(type, paramCompany, license);
+            }
+            return "";
+        }
+
+        /**
+         * @todo: write some sanity checks
+         * I doubt I'll be able to get something straight outta da Ghidra here...
+         */
+        public override bool Check(string paramLicenseKey, string paramCompany, LicenseTypes license)
+        {
+            switch (license)
+            {
+                // Prefix Num
+                case LicenseTypes.Mac3270:
+                case LicenseTypes.Mac5250:
+                    return true;
+
+                // Prefix Alpha
+                case LicenseTypes.Mac3812:
+                case LicenseTypes.MacTelnet:
+                case LicenseTypes.MacKeyboard:
+                    return true;
+            }
+            return false;
+        }
+
+
+        /**
+         * Now the fun stuff..
+         * 
+         * Beware! the PlatformMac versions rely on datatype truncation
+         * It's a real pain in the ass to make sure the datatypes are all accurate
+         */
+        public string GeneratePrefixAlpha(int itype, string param_company, LicenseTypes license)
+        {
+            // must start with an 'a' or 'b;
+            char type = (char)(itype + (int)'a');
+            string param_lickey = type.ToString();
+            ushort sum = 0;
+
+            for (int b = 0; b < param_company.Length; b++)
+            {
+                if (param_company[b] >= 0x21)
+                    sum += (ushort)(param_company[b] + license);
+            }
+
+            sum = (ushort)(sum * (short)param_lickey[0]);
+            param_lickey += (ushort)((sum & byte.MaxValue) * sum);
+            return param_lickey;
+        }
+
+        /**
+         * Beware! the PlatformMac versions rely on datatype truncation
+         * It's a real pain in the ass to make sure the datatypes are all accurate
+         * 
+         * There's a special case for the MacKeyboard as it deviates from the rest of the algoritm
+         * The (byte) cast is extmely important
+         */
+        public string GeneratePrefixNumber(int itype, string param_company, LicenseTypes license)
+        {
+            char type = (char)(itype + (int)'0');
+            string param_lickey = type.ToString();
+            uint num1 = 0;
+            byte[] byteArray = StrToByteArray(param_company);
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if (license == LicenseTypes.MacKeyboard && (byte)(byteArray[index] + 0xbf) < 0x1a)
+                {
+                    byteArray[index] += 32;
+                }
+                else if (license != LicenseTypes.MacKeyboard && byteArray[index] + 0xbf < 0x1a)
+                {
+                    byteArray[index] += 32;
+                }
+            }
+
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if (byteArray[index] >= 0x41) // 'A'
+                    num1 += byteArray[index] + (uint)license;
+            }
+
+            uint num2 = (uint)(num1 * (int)param_lickey[0]);
+            num2 = (num2 * (num2 & byte.MaxValue) & ushort.MaxValue);
+            ulong num3 = 0xaa8;
+            if (99 < num2)
+            {
+                num3 = num2;
+            }
+
+            param_lickey = param_lickey[0].ToString() + num3;
+
+
+            return param_lickey;
+        }
+    }
+}
@@ -0,0 +1,81 @@
+using System;
+
+namespace FrappeMocha.Keygen.Platforms
+{
+    public class PlatformWindows : KeygenBase
+    {
+        public PlatformWindows()
+        {
+            Platform = "Windows";
+            Products.Add(new KeygenProduct(LicenseTypes.Windows3270, "TN3270", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.Windows5250, "TN5250", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.Windows3812, "TN3812", Platform));
+            Products.Add(new KeygenProduct(LicenseTypes.WindowsTelnet, "Telnet", Platform));
+        }
+        
+        public override string Generate(int type, string paramCompany, LicenseTypes license)
+        {
+            string licenseKey = type.ToString();
+            uint sum = 0;
+            byte[] byteArray = StrToByteArray(paramCompany);
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if (byteArray[index] >= 'A' && byteArray[index] <= 'Z')
+                    byteArray[index] += 32; // ASCII 'Space'
+            }
+
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if (byteArray[index] >= 'A')
+                    sum += byteArray[index] + (uint)license;
+            }
+            sum = sum * licenseKey[0];
+            sum = (uint)((int)sum * ((int)sum & byte.MaxValue) & ushort.MaxValue);
+            if (sum < 100U)
+                sum = 2728U;
+
+            licenseKey = (licenseKey[0].ToString() + sum) + '-' +
+                           (Int32)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;
+
+
+            return licenseKey;
+        }
+
+        /**
+         * Straight outta da Assembley
+         */
+        public override bool Check(string paramLicenseKey, string paramCompany, LicenseTypes license)
+        {
+            uint num1 = 0;
+            if (paramCompany == null || paramCompany.Length < 2)
+                return false;
+            byte[] byteArray = this.StrToByteArray(paramCompany);
+            if (paramLicenseKey == null || paramLicenseKey.Length < 6)
+                return false;
+
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                // >= 'A' && <= 'Z'
+                if ((int)byteArray[index] >= 65 && (int)byteArray[index] <= 90)
+                    byteArray[index] += (byte)32;
+            }
+            for (int index = 0; index < byteArray.Length; ++index)
+            {
+                if ((int)byteArray[index] >= 65) // 'A'
+                    num1 += (uint)byteArray[index] + (uint)license;
+            }
+            uint num2 = num1 * (uint)paramLicenseKey[0];
+            uint num3 = (uint)((int)num2 * ((int)num2 & (int)byte.MaxValue) & (int)ushort.MaxValue);
+            if (num3 < 100U)
+                num3 = 2728U;
+
+            if (paramLicenseKey.StartsWith((paramLicenseKey[0].ToString() ?? "") + (object)num3))
+            {
+                //this.aa = param_lickey.Substring(0, 1);
+                return true;
+            }
+            //this.aa = "";
+            return false;
+        }
+    }
+}