diff --git a/de4dot.code/deobfuscators/DeobUtils.cs b/de4dot.code/deobfuscators/DeobUtils.cs
index 6e383d6f..8b42712a 100644
--- a/de4dot.code/deobfuscators/DeobUtils.cs
+++ b/de4dot.code/deobfuscators/DeobUtils.cs
@@ -21,6 +21,7 @@ using System;
 using System.IO;
 using System.Security.Cryptography;
 using Mono.Cecil;
+using ICSharpCode.SharpZipLib.Zip.Compression;
 
 namespace de4dot.code.deobfuscators {
 	static class DeobUtils {
@@ -80,6 +81,14 @@ namespace de4dot.code.deobfuscators {
 			}
 		}
 
+		public static byte[] desDecrypt(byte[] data, int start, int len, byte[] key, byte[] iv) {
+			using (var des = new DESCryptoServiceProvider()) {
+				using (var transform = des.CreateDecryptor(key, iv)) {
+					return transform.TransformFinalBlock(data, start, len);
+				}
+			}
+		}
+
 		public static string getExtension(ModuleKind kind) {
 			switch (kind) {
 			case ModuleKind.Dll:
@@ -92,5 +101,19 @@ namespace de4dot.code.deobfuscators {
 				return ".exe";
 			}
 		}
+
+		public static byte[] inflate(byte[] data, bool hasHeader) {
+			var buffer = new byte[0x1000];
+			var memStream = new MemoryStream();
+			var inflater = new Inflater(hasHeader);
+			inflater.SetInput(data, 0, data.Length);
+			while (true) {
+				int count = inflater.Inflate(buffer, 0, buffer.Length);
+				if (count == 0)
+					break;
+				memStream.Write(buffer, 0, count);
+			}
+			return memStream.ToArray();
+		}
 	}
 }
diff --git a/de4dot.code/deobfuscators/dotNET_Reactor/v4/NativeImageUnpacker.cs b/de4dot.code/deobfuscators/dotNET_Reactor/v4/NativeImageUnpacker.cs
index 1d424bfc..9c0c9841 100644
--- a/de4dot.code/deobfuscators/dotNET_Reactor/v4/NativeImageUnpacker.cs
+++ b/de4dot.code/deobfuscators/dotNET_Reactor/v4/NativeImageUnpacker.cs
@@ -53,23 +53,12 @@ namespace de4dot.code.deobfuscators.dotNET_Reactor.v4 {
 			decrypter.decrypt(encryptedData, 0, encryptedData.Length);
 
 			byte[] inflatedData;
-			if (isNet1x) {
-				var buffer = new byte[0x1000];
-				var memStream = new MemoryStream();
-				var inflater = new Inflater();
-				inflater.SetInput(encryptedData, 0, encryptedData.Length);
-				while (true) {
-					int count = inflater.Inflate(buffer, 0, buffer.Length);
-					if (count == 0)
-						break;
-					memStream.Write(buffer, 0, count);
-				}
-				inflatedData = memStream.ToArray();
-			}
+			if (isNet1x)
+				inflatedData = DeobUtils.inflate(encryptedData, false);
 			else {
 				int inflatedSize = BitConverter.ToInt32(encryptedData, 0);
 				inflatedData = new byte[inflatedSize];
-				var inflater = new Inflater();
+				var inflater = new Inflater(false);
 				inflater.SetInput(encryptedData, 4, encryptedData.Length - 4);
 				int count = inflater.Inflate(inflatedData);
 				if (count != inflatedSize)