Shirona1337
682150de48
Loader no longer touches disk: drop the LoadLibraryW path that
extracted OpenZen.dll to %TEMP%\OpenZenLoader and replace it with
an in-process PE loader that maps the embedded DLL straight into
the target Java process.
native/loader (new manual_map.cpp/.h):
- VirtualAllocEx in the remote process for SizeOfImage,
locally apply relocations + IAT patching (kernel32 etc. are
KnownDLLs so local GetProcAddress addresses are valid in the
remote), WriteProcessMemory the finished image once,
VirtualProtectEx to match section characteristics, then run a
minimal x64 trampoline shellcode that calls DllMain with
DLL_PROCESS_ATTACH using the proper ABI (shadow space,
16-byte stack alignment).
- embedded_dll.cpp now hands back a pointer into the .rsrc
section instead of writing the DLL out. injector.cpp shrinks
to a 14-line shim around inject_in_memory.
native (top-level CMakeLists.txt):
- Force /MT (CMAKE_MSVC_RUNTIME_LIBRARY = MultiThreaded) for
both the DLL and the loader EXE. Without this the manual
mapper's local-address import resolution trips over
vcruntime140 / ucrtbase, which are not KnownDLLs and may have
different bases in the target process - leading to NULL
derefs inside msvcp140 after injection. With /MT the only
import surface left is KERNEL32.
native/dll (jar_extract.cpp):
- Replace FindResource/LoadResource/SizeofResource with a
hand-rolled PE resource directory walker. FindResource paths
through LdrFindResource_U, which depends on the PEB.Ldr table
that manual-mapped modules are not part of, so the standard
API returns NULL for the embedded zen.jar after injection.
native/loader UI:
- Drop the now-pointless DLL Path edit + Browse button.
- Add per-process "Window Class" column harvested via
GetClassNameW alongside the existing window title.
- Add a Minecraft Only checkbox (default on): show only rows
whose window title startsWith "Minecraft" and does not
contain "Launcher", filtering HMCL / MultiMC / generic Java
apps out of the picker.
build.gradle:
- Add cleanNative (Delete) hooked into clean so wiping the
project also removes native/build/ and the staged
native/zen.jar (CMake would otherwise hold onto the previous
configure).
gradle.properties:
- Fill in the real mod metadata (id=hey, name=OpenZen,
authors=Shirona1337, group=io.github.openzen, description).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
59 lines
1.9 KiB
CMake
59 lines
1.9 KiB
CMake
# Stage the freshly-built OpenZen.dll into the loader's binary dir so rc.exe
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# can pick it up as an RCDATA resource (embedded in the .exe).
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set(EMBED_DIR "${CMAKE_CURRENT_BINARY_DIR}/embedded_dll")
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add_custom_command(
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OUTPUT "${EMBED_DIR}/OpenZen.dll"
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COMMAND ${CMAKE_COMMAND} -E make_directory "${EMBED_DIR}"
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COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_FILE:OpenZen> "${EMBED_DIR}/OpenZen.dll"
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DEPENDS OpenZen
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COMMENT "Staging OpenZen.dll into loader resources"
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)
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add_custom_target(stage_dll_for_loader DEPENDS "${EMBED_DIR}/OpenZen.dll")
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add_executable(OpenZenLoader WIN32
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src/main.cpp
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src/process_list.cpp
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src/injector.cpp
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src/manual_map.cpp
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src/embedded_dll.cpp
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src/window_title.cpp
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src/ui.cpp
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res/loader.rc
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)
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add_dependencies(OpenZenLoader stage_dll_for_loader)
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target_include_directories(OpenZenLoader PRIVATE
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${CMAKE_CURRENT_SOURCE_DIR}/src
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${CMAKE_CURRENT_SOURCE_DIR}/res
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)
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# Tell rc.exe to look in EMBED_DIR (where OpenZen.dll was staged) when
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# resolving the RCDATA "OpenZen.dll" reference in loader.rc.
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set_source_files_properties(res/loader.rc PROPERTIES
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COMPILE_FLAGS "/I\"${EMBED_DIR}\""
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)
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target_link_libraries(OpenZenLoader PRIVATE
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comctl32
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psapi
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shlwapi
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user32
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)
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set_target_properties(OpenZenLoader PROPERTIES
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OUTPUT_NAME "OpenZenLoader"
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)
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if(MSVC)
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# requireAdministrator: ensures the loader can OpenProcess /
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# VirtualAllocEx / CreateRemoteThread against javaw.exe even when the
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# Minecraft launcher (HMCL, MultiMC) was itself started elevated, and
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# avoids the silent injection failure that happens on locked-down user
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# accounts. The user will see one UAC consent prompt when launching
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# OpenZenLoader.exe.
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set_target_properties(OpenZenLoader PROPERTIES
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LINK_FLAGS "/SUBSYSTEM:WINDOWS /MANIFESTUAC:\"level='requireAdministrator' uiAccess='false'\""
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)
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endif()
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