N Nebula.NET · v1.0.9

Protect your .NET code from reverse engineering

A complete IL obfuscation and hardening suite — renaming, control-flow flattening, string encryption, anti-tamper and more. Verified to run identically to your original build.

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Free edition available · Windows installer · no account required to try

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// before — trivially readable
public decimal CalculatePrice(int qty) {
    return qty * BasePrice * (1 - Discount);
}

// after — flattened, renamed, encrypted
public decimal a(int A_0) {
    int b = 1837;
    while (true) switch (b) { /* … */ }
}

Works across: .NET Framework 4.8.NET 6.NET 8.NET 9.NET 10

Capabilities

Layered protection, one tool

Combine transforms to raise the cost of reverse engineering — each one is independently configurable.

Identifier renaming

Rename types, methods and fields to meaningless names while preserving your public API, reflection targets and serialization.

Control-flow flattening

Rewrites methods into dispatcher-driven state machines so the original logic is genuinely obscured in a decompiler — not just reordered.

String encryption

Literal strings are encrypted with a fresh per-build key and decrypted at runtime through an unbranded, inlined routine.

Anti-tamper & anti-debug

Detects modified assemblies and attached debuggers, with configurable reactions — throw, exit, or your own callback.

Resource & metadata hardening

Encrypt embedded resources and strip or obscure metadata that leaks intent, shrinking the attack surface.

Authenticode signing

Sign your protected output as part of the pipeline, with timestamping and certificate-store support built in.

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See it in action

Protection you can see

From readable source to hardened output — Nebula.NET at a glance.

Nebula.NET — professional .NET obfuscation and code hardening.

Correctness first

Obfuscation that never breaks your app

The strongest protection is worthless if it changes behavior. Nebula's transforms are validated across frameworks so that renaming, control-flow flattening and string encryption produce output that runs identically to your original binary — verified byte-for-byte in our test suite.

How it works

.NET targets verified

90+

automated tests

ways to run (CLI/GUI/CI)

runtime behavior changes

Editions