Nim Shellcode Fluctuation

Memory evasion — encrypts shellcode (XOR/RC4) in RX pages between C2 callbacks.

Quick Start

# Install Nim
# nimble install winim

# Build
nim c -d:release -d:strip --opt:size -o:agent.exe fluctuation.nim

# Inject shellcode (embed in source)
# Replace SHELLCODE placeholder in nim source with msfvenom/Cobalt output

How It Works