660bf27ccddae72ae250c008

About

interesting crackme on C#. Packed by .NET REACTOR 6.* and having Anti-Ildasm, Anti-Tampering, Anti-Debug, Native-Exe, Code-Virtualization. Got introduced to new tools while solving this.

1) https://github.com/SychicBoy/NETReactorSlayer : an open source (GPLv3) deobfuscator and unpacker for .NET Reactor.
2)
https://github.com/dnSpy/dnSpy : nSpy is a debugger and .NET assembly editor

Diving in

Having disassembled this binary using IDA, the pseudocode really did not make any sense since it was heavily obfuscated and was very difficult to even debug.

After doing some research, found out ReactorSlayer could be used to deobfuscate the binary.

now when i disassembled it using dnspy, the key was there itself, visible to naked eye.

putting it in,