DNGuard HVM (High-level Virtual Machine) is considered one of the hardest to unpack because it replaces standard metadata with custom opcodes.
While "universal" unpackers are rare due to the constant updates to DNGuard's protection layers, several notable tools have surfaced in the reverse engineering community: dnguard unpacker
In the real world, the battle between protectors and unpackers is a constant arms race: DNGuard HVM (High-level Virtual Machine) is considered one
Understanding DNGuard Unpackers: A Deep Dive into .NET Deobfuscation These features focus on restoring the assembly to
DNGuard moves the original .NET assembly into encrypted resources (often inside a "Costura" style container or native resources).
If you are developing or looking for a DNGuard Unpacker (a tool designed to reverse the protection applied by the DNGuard .NET obfuscator), here are several "good features" that separate a mediocre unpacker from a high-quality one.
These features focus on restoring the assembly to a runnable and readable state.