mirror of
https://dev.lirent.ru/Vatrog/vm-introspection-engine.git
synced 2026-06-18 02:06:36 +03:00
lirent
3199fbf258
The reversing keystone: a length-disassembly decoder with control-flow and RIP-relative target extraction (x86dec.h), pure over a byte buffer - no vmie_mem, no cr3, no Windows. Table-driven length over the 1-byte / 0F / 0F38 / 0F3A maps, legacy + REX + VEX prefixes, ModRM/SIB, displacements and immediates (66 and REX.W operand-size aware). It reports the instruction length plus the rel and RIP-relative targets of near call/jmp/jcc and any RIP-relative memory operand. EVEX is a documented gap (decodes as length 0). This is the primitive the rest of the static-reversing layer builds on (function inventory, call graph, xref). gva_code_xref now brute-scans with the decoder instead of its own ad-hoc E8/E9 and REX.W-lea heuristic, which is removed - one decoder in the tree. Because a brute scan can re-enter a prefixed instruction one byte in and decode a shorter aliased form with the same target, the scan drops a match that starts inside the extent of an already-accepted one; real, non-overlapping instructions are unaffected.
61 lines
2.7 KiB
CMake
61 lines
2.7 KiB
CMake
cmake_minimum_required(VERSION 3.18) # find_program(... REQUIRED)
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project(vmi-engine C)
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set(CMAKE_C_STANDARD 17) # generation B uses no C23 feature
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set(CMAKE_C_STANDARD_REQUIRED ON)
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set(CMAKE_C_EXTENSIONS ON) # deliberate: strnlen (POSIX) + void* arithmetic (GNU)
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option(VMIE_LTO "Enable LTO" OFF) # build-only; shipped default is -O2, no LTO
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# ---- host: VMI core as a static library ---------------------------------
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add_library(vmie STATIC
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src/core/gpa.c
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src/engine/gva.c
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src/engine/sigphys.c
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src/engine/win32/host.c
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src/engine/win32/pe.c
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src/engine/win32/proc.c
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src/engine/win32/profile.c
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src/engine/win32/text.c
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src/handlers/scan.c
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src/handlers/sigscan.c
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src/handlers/sigset.c
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src/handlers/codescan.c
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src/handlers/x86dec.c
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src/handlers/pmap.c
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src/handlers/snapdiff.c)
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target_include_directories(vmie
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PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include # public API: include/*.h
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PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/src/core/include # private: core.h
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${CMAKE_CURRENT_SOURCE_DIR}/src/engine/include # private: engine-arch.h, pe.h
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${CMAKE_CURRENT_SOURCE_DIR}/src/engine/win32) # private: engine-win32.h, contract.h
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target_compile_options(vmie PRIVATE -O2 -Wall -Wextra)
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if(VMIE_LTO)
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target_compile_options(vmie PRIVATE -flto)
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target_link_options(vmie PRIVATE -flto)
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endif()
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# ---- host: CLI demonstrator over the library ----------------------------
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add_executable(vmie_cli src/cli.c)
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target_link_libraries(vmie_cli PRIVATE vmie) # public include/ comes via vmie (PUBLIC)
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target_compile_options(vmie_cli PRIVATE -Wall -Wextra)
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# ---- host: dump-scan demonstrator (OS-agnostic, no win32) ----------------
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add_executable(vmie_scan src/scan_cli.c)
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target_link_libraries(vmie_scan PRIVATE vmie)
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target_compile_options(vmie_scan PRIVATE -Wall -Wextra)
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# ---- guest: cross-compile to Windows x86-64 via mingw-w64 ---------------
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find_program(MINGW_CC NAMES x86_64-w64-mingw32-gcc REQUIRED)
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set(VMIE_STARTUP ${CMAKE_CURRENT_BINARY_DIR}/vmie-startup.exe)
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add_custom_command(
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OUTPUT ${VMIE_STARTUP}
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COMMAND ${MINGW_CC} -O2 -Wall -Wextra -static -s
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-I${CMAKE_CURRENT_SOURCE_DIR}/src/engine/win32
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-o ${VMIE_STARTUP} ${CMAKE_CURRENT_SOURCE_DIR}/src/engine/win32/guest.c
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DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/src/engine/win32/guest.c
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${CMAKE_CURRENT_SOURCE_DIR}/src/engine/win32/contract.h
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COMMENT "Cross-compiling vmie-startup.exe (mingw-w64, x86-64)"
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VERBATIM)
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add_custom_target(vmie-startup ALL DEPENDS ${VMIE_STARTUP})
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