Every Byte Matters.
Someone Can Decompile Your .NET App in Under60 Seconds.
DT .NET Obfuscator protects your compiled C#, VB.NET, and F# applications - EXE and DLL - from being reverse engineered, decompiled, tampered with or memory-dumped.
- ✓ 17 protection layers.
- ✓ WPF and BAML safe.
- ✓ CI/CD pipeline ready.
If Someone Downloads Your App - They Can Already Read Your Source Code.
.NET applications compile to Intermediate Language (IL) - not raw machine code.
That means anyone with a free tool like dnSpy or ILSpy can open your EXE or DLL and read your code almost as clearly as the original C# you wrote.
Your algorithms. Your license validation logic. Your API keys. Your database queries. Your entire business logic - sitting there, readable, in seconds.
How DT Obfuscator Works
It transforms your compiled assembly into something that still runs perfectly - but looks like noise to anyone trying to read it. No source code changes needed. No build process disruption.
Every Layer of Protection - Explained Simply
Enable what you need. Skip what you don't. Every toggle is independent - you stay in full control of what gets applied.
🔐 JIT IL Encryption (Native Hook)
Standard obfuscators fail against memory dumpers because they decrypt code before it runs. JIT IL Encryption decrypts code at the last possible moment - just before execution - using a native hook. No clean memory window to dump.
🔀 Region-Safe Control Flow Flattening
Destroys logical structure by turning if/else loops into deeply nested state machines. Handles exception blocks correctly to ensure no crashes or broken try/catch blocks.
🔄 IL Mutation
Rewrites instructions into semantically equivalent but structurally different IL code, rendering automated deobfuscation tools useless.
🔤 Polymorphic String Encryption
Encrypts API endpoints, SQL queries, license keys, and error messages using a randomized algorithm that changes on every build.
🌐 Advanced Renaming (Deterministic & BAML)
Renames classes, methods, and properties to meaningless characters. Features BAML parsing so WPF UI bindings still work safely.
🕵️ Advanced Anti-Debug (Native Hooks)
Detects debuggers using native OS hooks rather than basic managed checks, making it extremely difficult for reverse engineers to bypass.
🔒 Anti-Tamper (Memory-Safe Hashing)
Startup validation checks verify executable integrity. If patched (e.g. key checks bypassed), the app instantly terminates.
🚫 Anti-Dump
Prevents scanning tools from creating process snapshots. Paired with JIT encryption, attackers get an incomplete, unusable image.
🧩 Advanced Reference Proxy (Delegate)
Converts direct calls to external libraries or .NET APIs into dynamic delegate proxies, masking call graphs and file systems.
🔡 Constant Encryption
Encrypts numeric and boolean values to hide program constants used to locate license checks or thresholds.
📦 Resource Encryption
Secures custom embedded files, media assets, XML configurations, and images, decrypting them in-memory only at runtime.
🗜️ Compress & Pack (Memory Load)
Packs and compresses your target executables into a single container. Dependencies load directly from system memory.
📎 Dependency Embedding
Bundles all reference assemblies and external DLLs into a single distribution EXE, avoiding user missing-DLL errors.
🗑️ Junk Code Insertion
Injects dead blocks and fake instructions to inflate apparent complexity, throwing off automated logic analysis.
🧹 Strip PDB & Debug Info
Strips debug databases, source paths, line mappings, and metadata symbols, preventing any code-to-line correlation.
💉 Licensing / Watermarking
Embeds encrypted vendor tags, tracking IDs, or license payloads directly into production assemblies for leak tracing.
🔐 Strong Name Re-Signing
Post-obfuscation assembly signing with SNK files restoring strong names for GAC deployment compatibility.
Load. Configure. Protect. Done.
Four simple steps to secure your assemblies.
Add Your Assembly
Browse and select your compiled .NET EXE or DLL files. Add multiple assemblies at once. Specify your output directory.
Choose Your Protections
Toggle the protections you want to apply. Add exclusion patterns (regex) for namespaces or classes that should stay unchanged.
Set Output & Signing
Choose your output folder. If your assembly uses strong naming, add your .SNK file for automatic re-signing after obfuscation.
Protect
Hit the protect button. Watch the live log console. Your protected assembly is ready in the output folder to ship.
Already in Your Build Process by End of Day
The GUI is for configuration. The CLI is for automation. Once you've set up your protections in the GUI, DT .NET Obfuscator exports a configuration file. Pass that file to the CLI tool and it runs headlessly - no UI, no interaction.
Plug it into GitHub Actions, Azure DevOps, Jenkins, or any build pipeline. Every release build gets obfuscated automatically before it ships. No manual step. No forgotten builds. Every version protected.
run: |
dtobfuscator.exe --config protect.json \
--input ./bin/Release/MyApp.exe \
--output ./dist/
Things You Should Know Before You Buy
We'd rather tell you upfront than have you find out after purchase.
Antivirus False Positives
Obfuscated executables sometimes trigger overly aggressive antivirus engines - not because they're malicious, but because the packing and encryption patterns look unusual to heuristic scanners.
File Size Will Increase
Features like Control Flow Flattening, Junk Code Insertion, and Polymorphic Strings add instructions to your assembly. Expect 20–50% size increase depending on enabled features.
Stack Traces in Production Logs
After renaming, crash logs will show obfuscated method names - not your original code. The tool generates a mapping file that you use to decode stack traces when debugging production issues. Keep that file safe - you will need it.
Anyone Who Ships .NET Software and Doesn't Want It Copied
Trusted by developers, enterprises, and consultants worldwide
Independent Software Vendors (ISVs)
You've spent months or years building a .NET desktop application. Someone could decompile it in minutes. Obfuscation makes it not worth the effort.
SaaS & Licensing-Based Products
Your license validation is in C# code. Without obfuscation, a determined user can patch it out in dnSpy in under an hour. Anti-tamper makes that unfeasible.
Enterprise Internal Tools
Internal tooling with embedded credentials, connection strings, or proprietary algorithms deployed to employee machines still needs protection.
Consultants & Agencies
You've built something proprietary for a client under NDA. Obfuscating the delivery build protects your methodology and IP from leakages.
Game Developers (.NET / Unity)
Anti-cheat, inventory systems, progression logic - all exposed in plain IL. Protect the code players are most motivated to reverse.
Try It on Your Real Assembly - Free
No credit card required. Inspect the protected output before you buy.
| Feature | Free Trial | Full Version |
|---|---|---|
| Load .NET EXE / DLL | ✓ | ✓ |
| All 17 protection toggles accessible | ✓ | ✓ |
| Exclusions (Regex) | ✓ | ✓ |
| Watermark / Licensing text | ✓ | ✓ |
| Dependency embedding | ✓ | ✓ |
| Strong name re-signing | ✓ | ✓ |
| CLI / CI/CD pipeline support | ✓ | ✓ |
| Output assembly | Trial watermark | Clean, production-ready |
| Cost | Free | From $X / 6 months |
Choose How Long You Need It
DT .NET Obfuscator is licensed for use as long as your plan is active.
Every plan includes every feature - all 17 protections, CLI access, CI/CD support, and future updates released during your plan period.
30-Day Money-Back Guarantee on all plans.
If the tool breaks your application and we can't fix it — full refund.
Compatibility & Tech Specs
| Supported Frameworks | .NET Core 3.1, .NET 5/6/7/8, .NET 4.x |
| Supported Languages | C#, VB.NET, F# |
| Output Types | EXE and DLL (.NET Assemblies) |
| Target Architecture | x86, x64, AnyCPU |
| Operating System | Windows 10, 11, Server 2016–2022 |
| Authentication | No internet required after activation |
| CI/CD Support | CLI tool with JSON config file support |
Questions Developers Ask Before Buying
Straight answers. No fluff.
QWill obfuscation break my WPF application?
ANo - if you use DT .NET Obfuscator. Most obfuscators break WPF because they rename properties that XAML bindings reference by string name. DT includes a BAML parser that processes XAML/BAML streams and handles renaming safely.
QWill it slow my application down?
ANot noticeably. JIT IL Encryption adds a small decryption step at method entry, and Control Flow Flattening adds some branching - but execution paths are heavily optimized. real-world apps show no measurable performance difference.
QCan I use it in my CI/CD pipeline?
AYes. The CLI tool accepts a JSON config file generated from the GUI. Drop it into any GitHub Actions, Azure DevOps, or Jenkins step and every release build is automatically protected.
QMy assembly uses strong naming. Will that break?
ANo. The tool supports Strong Name Re-Signing. Add your .SNK file and the path to sn.exe - the protected assembly gets re-signed automatically after obfuscation.
QWhat if I have public APIs that shouldn't be renamed?
AUse the Exclusions (Regex) field. Add regex patterns for namespaces, classes, or methods that must keep their original names - like public SDK surfaces or serialization models.
QWill my antivirus flag the protected output?
APossibly - heuristic scanners sometimes react to obfuscated code patterns. This is a known industry issue, not specific to our tool. Code-signing with an EV certificate resolves this in most cases.
QWhat happens to my production crash logs after obfuscation?
AMethod names in logs will be obfuscated. The tool generates a mapping file - keep it safe and use it to decode stack traces when debugging production issues.
QWhich .NET versions are supported?
A.NET Core 3.1, .NET 5, 6, 7, 8, and .NET Framework 4.x. Languages: C#, VB.NET, and F#.
Your Code Took Months to Build. It Shouldn't Take Someone 60 Seconds to Copy.
Every .NET application ships as readable IL. That's just how the platform works. The question isn't whether your code is readable - it is. The question is whether you've made reading it worth anyone's time. Download the free trial. Load your actual EXE or DLL. Run it through the protections and inspect the output yourself.