diff --git a/Il2CppInspector.Common/FileFormatReaders/FormatLayouts/MachO.cs b/Il2CppInspector.Common/FileFormatReaders/FormatLayouts/MachO.cs
index f177024..8df3d8c 100644
--- a/Il2CppInspector.Common/FileFormatReaders/FormatLayouts/MachO.cs
+++ b/Il2CppInspector.Common/FileFormatReaders/FormatLayouts/MachO.cs
@@ -1,5 +1,5 @@
 /*
-    Copyright 2017-2019 Katy Coe - http://www.hearthcode.org - http://www.djkaty.com
+    Copyright 2017-2020 Katy Coe - http://www.hearthcode.org - http://www.djkaty.com
 
     All rights reserved.
 */
@@ -24,7 +24,9 @@ namespace Il2CppInspector
         LC_SYMTAB = 0x2,
         LC_DYSYMTAB = 0xb,
         LC_SEGMENT_64 = 0x19,
+        LC_ENCRYPTION_INFO = 0x21,
         LC_FUNCTION_STARTS = 0x26,
+        LC_ENCRYPTION_INFO_64 = 0x2C,
 
         CPU_TYPE_X86 = 7,
         CPU_TYPE_X86_64 = 0x01000000 + CPU_TYPE_X86,
@@ -96,6 +98,14 @@ namespace Il2CppInspector
         public uint StrSize;
     }
 
+    internal class MachOEncryptionInfo
+    {
+        // MachOLoadCommand
+        public uint CryptOffset;
+        public uint CryptSize;
+        public uint CryptID;
+    }
+
     internal class MachO_nlist<TWord> where TWord : struct
     {
         public uint n_strx;
diff --git a/Il2CppInspector.Common/FileFormatReaders/MachOReader.cs b/Il2CppInspector.Common/FileFormatReaders/MachOReader.cs
index 7142424..6b3a85f 100644
--- a/Il2CppInspector.Common/FileFormatReaders/MachOReader.cs
+++ b/Il2CppInspector.Common/FileFormatReaders/MachOReader.cs
@@ -1,5 +1,5 @@
 /*
-    Copyright 2017-2019 Katy Coe - http://www.hearthcode.org - http://www.djkaty.com
+    Copyright 2017-2020 Katy Coe - http://www.hearthcode.org - http://www.djkaty.com
 
     All rights reserved.
 */
@@ -39,6 +39,7 @@ namespace Il2CppInspector
         protected override bool checkMagicBE(MachO magic) => magic == MachO.MH_CIGAM_64;
 
         protected override MachO lc_Segment => MachO.LC_SEGMENT_64;
+
         public override uint MapVATR(ulong uiAddr) {
             var section = sections.First(x => uiAddr >= x.Address && uiAddr <= x.Address + x.Size);
             return (uint) (uiAddr - (section.Address - section.ImageOffset));
@@ -126,6 +127,15 @@ namespace Il2CppInspector
                     case MachO.LC_DYSYMTAB:
                         // TODO: Implement Mach-O dynamic symbol table
                         break;
+
+                    // Encryption check
+                    // If cryptid == 1, this binary is encrypted with FairPlay DRM
+                    case MachO.LC_ENCRYPTION_INFO:
+                    case MachO.LC_ENCRYPTION_INFO_64:
+                        var encryptionInfo = ReadObject<MachOEncryptionInfo>();
+                        if (encryptionInfo.CryptID != 0)
+                            throw new NotImplementedException("This Mach-O executable is encrypted with FairPlay DRM and cannot be processed. Please provide a decrypted version of the executable.");
+                        break;
                 }
 
                 // There might be other data after the load command so always use the specified total size to step forwards