diff --git a/pkgs/by-name/wi/wiseunpacker/deps.nix b/pkgs/by-name/wi/wiseunpacker/deps.nix
new file mode 100644
index 000000000000..f25d7540ba4b
--- /dev/null
+++ b/pkgs/by-name/wi/wiseunpacker/deps.nix
@@ -0,0 +1,31 @@
+# This file was automatically generated by passthru.fetch-deps.
+# Please dont edit it manually, your changes might get overwritten!
+
+{ fetchNuGet }:
+[
+  (fetchNuGet {
+    pname = "Newtonsoft.Json";
+    version = "13.0.3";
+    hash = "sha256-hy/BieY4qxBWVVsDqqOPaLy1QobiIapkbrESm6v2PHc=";
+  })
+  (fetchNuGet {
+    pname = "SabreTools.Compression";
+    version = "0.4.2";
+    hash = "sha256-yNgHjyodFbkghYvPq3ginDGTX7rQNgcD9tRaWD3mJYM=";
+  })
+  (fetchNuGet {
+    pname = "SabreTools.IO";
+    version = "1.3.3";
+    hash = "sha256-UMGpU7g11qFafN+kbDmUt9PXlHg8dPHHZOIz6DuXMEU=";
+  })
+  (fetchNuGet {
+    pname = "SabreTools.Matching";
+    version = "1.3.1";
+    hash = "sha256-vPIGGneY0Zq/H75lJLtq5PosCozAXp+KRlQQ6OGAYiU=";
+  })
+  (fetchNuGet {
+    pname = "SabreTools.Models";
+    version = "1.4.2";
+    hash = "sha256-lVj05vrE6duaBa0Hq2ZmlSU0iYlp1o69P6TDtf9KPqo=";
+  })
+]
diff --git a/pkgs/by-name/wi/wiseunpacker/package.nix b/pkgs/by-name/wi/wiseunpacker/package.nix
new file mode 100644
index 000000000000..f5d42fa68f9f
--- /dev/null
+++ b/pkgs/by-name/wi/wiseunpacker/package.nix
@@ -0,0 +1,41 @@
+{
+  fetchFromGitHub,
+  buildDotnetModule,
+  dotnetCorePackages,
+  lib,
+}:
+let
+  version = "1.3.3";
+  pname = "WiseUnpacker";
+in
+buildDotnetModule rec {
+  inherit version pname;
+
+  src = fetchFromGitHub {
+    owner = "mnadareski";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-APbfo2D/p733AwNNByu5MvC9LA8WW4mAzq6t2w/YNrs=";
+  };
+
+  dotnet-sdk = dotnetCorePackages.sdk_8_0;
+  dotnet-runtime = dotnetCorePackages.runtime_8_0;
+
+  dotnetFlags = [ "-p:TargetFramework=net8.0" ];
+
+  # Rename to something sensible
+  postFixup = ''
+    mv "$out/bin/Test" "$out/bin/WiseUnpacker"
+  '';
+
+  nugetDeps = ./deps.nix;
+
+  projectFile = "Test/Test.csproj";
+
+  meta = with lib; {
+    homepage = "https://github.com/mnadareski/WiseUnpacker/";
+    description = "C# Wise installer unpacker based on HWUN and E_WISE ";
+    maintainers = [ maintainers.gigahawk ];
+    license = licenses.mit;
+  };
+}