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101 lines
4.7 KiB
C++
101 lines
4.7 KiB
C++
/**
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* @file install-linux.cpp
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* @author Max Raulea (max.raulea@hyperdbg.org)
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* @brief Linux stub implementations of the driver-loader (install.cpp)
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* @details The Windows implementation (install.cpp) loads/unloads the HyperDbg
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* kernel-mode driver (the .sys file that contains the actual debugging
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* engine) through the Windows Service Control Manager (SCM):
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* InstallDriver/StartDriver/StopDriver/RemoveDriver wrap
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* CreateService/StartService/ControlService/DeleteService, and
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* ManageDriver orchestrates them for a given DRIVER_FUNC_* action.
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*
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* None of that exists on Linux: there is no SCM, and there is no
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* HyperDbg Linux kernel module to load yet. So the whole translation
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* unit is swapped out on Linux (CMake `if(UNIX)` REMOVE_ITEM
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* install.cpp + APPEND install-linux.cpp), mirroring the
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* symbol.cpp -> symbol-linux.cpp / pe-parser.cpp -> pe-parser-linux.cpp
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* pattern. install.cpp itself is left 100% untouched for the Windows
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* build. Only the two public entry points that non-Windows callers
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* reference are provided here (ManageDriver, SetupPathForFileName); the
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* four SC_HANDLE helpers are guarded out of install.h on Linux and are
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* never referenced there.
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*
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* TODO(Linux) to make these real once a Linux kernel component lands:
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* - ManageDriver: load/unload the future HyperDbg Linux kernel module.
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* The natural backend is insmod/rmmod semantics via the finit_module(2)
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* / delete_module(2) syscalls (or libkmod), taking the .ko path built
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* by SetupPathForFileName. DRIVER_FUNC_INSTALL/START -> load,
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* DRIVER_FUNC_STOP/REMOVE -> unload. Requires CAP_SYS_MODULE (root).
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* - SetupPathForFileName: build the absolute path of a file that sits
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* next to the running executable. The Windows version uses
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* GetModuleFileName + strip-after-last-'\\' + append '\\'+FileName +
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* optional existence check. The Linux equivalent is:
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* readlink("/proc/self/exe", ...) (the kernel-provided symlink to
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* the current process's own binary, i.e. the GetModuleFileName
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* counterpart), then strrchr(..., '/') to strip the program name,
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* append '/' + FileName, and (if CheckFileExists) verify with
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* access(path, F_OK). Mind BufferLength bounds on every write.
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* This is a generic "find a file beside my binary" helper (also used
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* for the hwdbg test/script files, not just the driver), so it is the
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* one that is actually worth implementing for real later.
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*
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* @version 0.1
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* @date 2026-07-18
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*
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* @copyright This project is released under the GNU Public License v3.
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*
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*/
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#include "pch.h"
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#ifdef __linux__
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/**
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* @brief Install / start / stop / remove the HyperDbg kernel driver.
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*
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* @param DriverName
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* @param ServiceName
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* @param Function one of DRIVER_FUNC_INSTALL / STOP / REMOVE
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*
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* @return BOOLEAN FALSE — driver (un)loading is not supported on Linux yet
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* (no SCM, and no HyperDbg Linux kernel module). See file header for the
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* finit_module/delete_module plan.
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*/
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BOOLEAN
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ManageDriver(_In_ LPCTSTR DriverName, _In_ LPCTSTR ServiceName, _In_ UINT16 Function)
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{
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UNREFERENCED_PARAMETER(DriverName);
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UNREFERENCED_PARAMETER(ServiceName);
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UNREFERENCED_PARAMETER(Function);
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ShowMessages("err, driver (un)loading is not supported on Linux yet\n");
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return FALSE;
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}
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/**
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* @brief Build the absolute path of a file located next to the running binary.
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*
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* @param FileName the file to locate (e.g. the driver or a test/script file)
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* @param FileLocation out buffer receiving the full path
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* @param BufferLength size of FileLocation in bytes
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* @param CheckFileExists whether to verify the resulting path exists
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*
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* @return BOOLEAN FALSE — not implemented on Linux yet. The real version should
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* use readlink("/proc/self/exe") + strip + append + access(); see the
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* file header TODO(Linux).
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*/
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BOOLEAN
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SetupPathForFileName(const CHAR * FileName,
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_Inout_updates_bytes_all_(BufferLength) PCHAR FileLocation,
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ULONG BufferLength,
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BOOLEAN CheckFileExists)
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{
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UNREFERENCED_PARAMETER(FileName);
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UNREFERENCED_PARAMETER(FileLocation);
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UNREFERENCED_PARAMETER(BufferLength);
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UNREFERENCED_PARAMETER(CheckFileExists);
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ShowMessages("err, SetupPathForFileName is not supported on Linux yet\n");
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return FALSE;
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}
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#endif // __linux__
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