Makefile

#
# Makefile for building the Windows x64 C++ Shellcode Template on Linux
# Requires: x86_64-w64-mingw32 toolchain and nasm
#

# --- Tools ---
CXX      := x86_64-w64-mingw32-g++
ASM      := nasm
LD       := x86_64-w64-mingw32-ld
OBJCOPY  := x86_64-w64-mingw32-objcopy

# --- Flags ---
CFLAGS   := -c -Os -nostdlib -fno-asynchronous-unwind-tables -std=c++20
CFLAGS   += -fno-ident -fpack-struct=8 -falign-functions=1 -s -w -mno-sse
CFLAGS   += -ffunction-sections -falign-jumps=1 -falign-labels=1
CFLAGS   += -Wl,-s,--no-seh,--enable-stdcall-fixup -masm=intel -fno-exceptions
CFLAGS   += -fms-extensions -fPIC -Iinclude -fno-builtin -Wall -Wextra

ASMFLAGS := -f win64
LDFLAGS  := -T linker/linker.ld

# --- Directories ---
SRC_DIR_CPP := src
SRC_DIR_ASM := src/asm
OBJ_DIR     := obj
BIN_DIR     := bin

# --- Sources and Outputs ---
CPP_SRCS := $(wildcard $(SRC_DIR_CPP)/*.cpp)
ASM_SRCS := $(wildcard $(SRC_DIR_ASM)/*.asm)

CPP_OBJS := $(patsubst $(SRC_DIR_CPP)/%.cpp, $(OBJ_DIR)/%.o, $(CPP_SRCS))
ASM_OBJS := $(patsubst $(SRC_DIR_ASM)/%.asm, $(OBJ_DIR)/%.o, $(ASM_SRCS))
OBJS     := $(CPP_OBJS) $(ASM_OBJS)

TARGET_EXE := $(BIN_DIR)/shellcode.exe
TARGET_BIN := $(BIN_DIR)/shellcode.bin

# --- Rules ---
all: $(TARGET_BIN)

# Build binary shellcode from exe
$(TARGET_BIN): $(TARGET_EXE)
	@mkdir -p $(BIN_DIR)
	@echo "[+] Extracting raw shellcode -> $@"
	@$(OBJCOPY) $< --dump-section .text=$@
	@echo "[*] Success! Final shellcode is in $@"

# Link executable
$(TARGET_EXE): $(OBJS)
	@mkdir -p $(BIN_DIR)
	@echo "[+] Linking object files -> $@"
	@$(LD) $(LDFLAGS) -o $@ $^

# Compile C++ source files
$(OBJ_DIR)/%.o: $(SRC_DIR_CPP)/%.cpp
	@mkdir -p $(OBJ_DIR)
	@echo "[+] Compiling C++ -> $@"
	@$(CXX) $(CFLAGS) -o $@ $<

# Assemble ASM source files
$(OBJ_DIR)/%.o: $(SRC_DIR_ASM)/%.asm
	@mkdir -p $(OBJ_DIR)
	@echo "[+] Assembling ASM -> $@"
	@$(ASM) $(ASMFLAGS) $< -o $@

# Clean
clean:
	@echo "[+] Cleaning up build files"
	@rm -rf $(OBJ_DIR) $(BIN_DIR)

.PHONY: all clean