spud - multi-architecture cross-platform hooking library.

Features

• x86-64 and arm64 support
• Windows, Mac and Linux support

Building

With CMake (as a subproject)

Clone repository to subfolder and link spud to your project:

add_subdirectory(path/to/spud)
target_link_libraries(your-project-name PRIVATE spud)

Examples

• Simple example

void hook(auto original, int n) {
  if (n == 0) {
    // Run some custom code here
    return;
  }
  // Forward to the original code
  return original(n);
}

void test_function(int n) {
  if (n == 0) {
    printf("N was 0\n");
  }
  printf("%d\n", n);
}

SPUD_STATIC_DETOUR(test_function, hook);

Build & Install

spud can be easily added to any cmake-based project. Just add a few lines in CMakeLists.txt.

FetchContent_Declare(
      spud
      GIT_REPOSITORY "https://github.com/tashcan/spud.git"
      GIT_TAG origin/main
)
FetchContent_MakeAvailable(spud)

Missing features

• No documentation (yet)
• Easy way to patch VTables
• A lot more stuff

References

• catch2 for unit-testing
• asmjit for code-gen on x86 and arm
• zydis for disassembling x86 code
• x86 and x86-64 opcode and instruction reference

License

• MIT