LuaJIT

DLL Injection via Direct Syscalls w/ SysCaller (LuaJIT/FFI)

Requirements

• LuaJIT (2.x)
• SysCaller.dll placed alongside the Lua script (or on PATH)

Usage

Run the script:

luajit injectdll.lua <pid> <dll_path>

Notes

• The script resolves the DLL absolute path via GetFullPathNameA to avoid remote LoadLibrary path issues.
• Uses the same allocation/write/thread creation flow as other samples.
• Shellcode is built dynamically with proper 64-bit address packing to prevent precision loss.