diff options
Diffstat (limited to 'tun/wintun/memmod/syscall_windows.go')
| -rw-r--r-- | tun/wintun/memmod/syscall_windows.go | 343 |
1 files changed, 343 insertions, 0 deletions
diff --git a/tun/wintun/memmod/syscall_windows.go b/tun/wintun/memmod/syscall_windows.go new file mode 100644 index 0000000..beae415 --- /dev/null +++ b/tun/wintun/memmod/syscall_windows.go @@ -0,0 +1,343 @@ +/* SPDX-License-Identifier: MIT + * + * Copyright (C) 2020 WireGuard LLC. All Rights Reserved. + */ + +package memmod + +import "unsafe" + +const ( + IMAGE_DOS_SIGNATURE = 0x5A4D // MZ + IMAGE_OS2_SIGNATURE = 0x454E // NE + IMAGE_OS2_SIGNATURE_LE = 0x454C // LE + IMAGE_VXD_SIGNATURE = 0x454C // LE + IMAGE_NT_SIGNATURE = 0x00004550 // PE00 +) + +// DOS .EXE header +type IMAGE_DOS_HEADER struct { + E_magic uint16 // Magic number + E_cblp uint16 // Bytes on last page of file + E_cp uint16 // Pages in file + E_crlc uint16 // Relocations + E_cparhdr uint16 // Size of header in paragraphs + E_minalloc uint16 // Minimum extra paragraphs needed + E_maxalloc uint16 // Maximum extra paragraphs needed + E_ss uint16 // Initial (relative) SS value + E_sp uint16 // Initial SP value + E_csum uint16 // Checksum + E_ip uint16 // Initial IP value + E_cs uint16 // Initial (relative) CS value + E_lfarlc uint16 // File address of relocation table + E_ovno uint16 // Overlay number + E_res [4]uint16 // Reserved words + E_oemid uint16 // OEM identifier (for e_oeminfo) + E_oeminfo uint16 // OEM information; e_oemid specific + E_res2 [10]uint16 // Reserved words + E_lfanew int32 // File address of new exe header +} + +// File header format +type IMAGE_FILE_HEADER struct { + Machine uint16 + NumberOfSections uint16 + TimeDateStamp uint32 + PointerToSymbolTable uint32 + NumberOfSymbols uint32 + SizeOfOptionalHeader uint16 + Characteristics uint16 +} + +const ( + IMAGE_SIZEOF_FILE_HEADER = 20 + + IMAGE_FILE_RELOCS_STRIPPED = 0x0001 // Relocation info stripped from file. + IMAGE_FILE_EXECUTABLE_IMAGE = 0x0002 // File is executable (i.e. no unresolved external references). + IMAGE_FILE_LINE_NUMS_STRIPPED = 0x0004 // Line nunbers stripped from file. + IMAGE_FILE_LOCAL_SYMS_STRIPPED = 0x0008 // Local symbols stripped from file. + IMAGE_FILE_AGGRESIVE_WS_TRIM = 0x0010 // Aggressively trim working set + IMAGE_FILE_LARGE_ADDRESS_AWARE = 0x0020 // App can handle >2gb addresses + IMAGE_FILE_BYTES_REVERSED_LO = 0x0080 // Bytes of machine word are reversed. + IMAGE_FILE_32BIT_MACHINE = 0x0100 // 32 bit word machine. + IMAGE_FILE_DEBUG_STRIPPED = 0x0200 // Debugging info stripped from file in .DBG file + IMAGE_FILE_REMOVABLE_RUN_FROM_SWAP = 0x0400 // If Image is on removable media, copy and run from the swap file. + IMAGE_FILE_NET_RUN_FROM_SWAP = 0x0800 // If Image is on Net, copy and run from the swap file. + IMAGE_FILE_SYSTEM = 0x1000 // System File. + IMAGE_FILE_DLL = 0x2000 // File is a DLL. + IMAGE_FILE_UP_SYSTEM_ONLY = 0x4000 // File should only be run on a UP machine + IMAGE_FILE_BYTES_REVERSED_HI = 0x8000 // Bytes of machine word are reversed. + + IMAGE_FILE_MACHINE_UNKNOWN = 0 + IMAGE_FILE_MACHINE_TARGET_HOST = 0x0001 // Useful for indicating we want to interact with the host and not a WoW guest. + IMAGE_FILE_MACHINE_I386 = 0x014c // Intel 386. + IMAGE_FILE_MACHINE_R3000 = 0x0162 // MIPS little-endian, 0x160 big-endian + IMAGE_FILE_MACHINE_R4000 = 0x0166 // MIPS little-endian + IMAGE_FILE_MACHINE_R10000 = 0x0168 // MIPS little-endian + IMAGE_FILE_MACHINE_WCEMIPSV2 = 0x0169 // MIPS little-endian WCE v2 + IMAGE_FILE_MACHINE_ALPHA = 0x0184 // Alpha_AXP + IMAGE_FILE_MACHINE_SH3 = 0x01a2 // SH3 little-endian + IMAGE_FILE_MACHINE_SH3DSP = 0x01a3 + IMAGE_FILE_MACHINE_SH3E = 0x01a4 // SH3E little-endian + IMAGE_FILE_MACHINE_SH4 = 0x01a6 // SH4 little-endian + IMAGE_FILE_MACHINE_SH5 = 0x01a8 // SH5 + IMAGE_FILE_MACHINE_ARM = 0x01c0 // ARM Little-Endian + IMAGE_FILE_MACHINE_THUMB = 0x01c2 // ARM Thumb/Thumb-2 Little-Endian + IMAGE_FILE_MACHINE_ARMNT = 0x01c4 // ARM Thumb-2 Little-Endian + IMAGE_FILE_MACHINE_AM33 = 0x01d3 + IMAGE_FILE_MACHINE_POWERPC = 0x01F0 // IBM PowerPC Little-Endian + IMAGE_FILE_MACHINE_POWERPCFP = 0x01f1 + IMAGE_FILE_MACHINE_IA64 = 0x0200 // Intel 64 + IMAGE_FILE_MACHINE_MIPS16 = 0x0266 // MIPS + IMAGE_FILE_MACHINE_ALPHA64 = 0x0284 // ALPHA64 + IMAGE_FILE_MACHINE_MIPSFPU = 0x0366 // MIPS + IMAGE_FILE_MACHINE_MIPSFPU16 = 0x0466 // MIPS + IMAGE_FILE_MACHINE_AXP64 = IMAGE_FILE_MACHINE_ALPHA64 + IMAGE_FILE_MACHINE_TRICORE = 0x0520 // Infineon + IMAGE_FILE_MACHINE_CEF = 0x0CEF + IMAGE_FILE_MACHINE_EBC = 0x0EBC // EFI Byte Code + IMAGE_FILE_MACHINE_AMD64 = 0x8664 // AMD64 (K8) + IMAGE_FILE_MACHINE_M32R = 0x9041 // M32R little-endian + IMAGE_FILE_MACHINE_ARM64 = 0xAA64 // ARM64 Little-Endian + IMAGE_FILE_MACHINE_CEE = 0xC0EE +) + +// Directory format +type IMAGE_DATA_DIRECTORY struct { + VirtualAddress uint32 + Size uint32 +} + +const IMAGE_NUMBEROF_DIRECTORY_ENTRIES = 16 + +type IMAGE_NT_HEADERS struct { + Signature uint32 + FileHeader IMAGE_FILE_HEADER + OptionalHeader IMAGE_OPTIONAL_HEADER +} + +func (ntheader *IMAGE_NT_HEADERS) Sections() []IMAGE_SECTION_HEADER { + return (*[0xffff]IMAGE_SECTION_HEADER)(unsafe.Pointer( + (uintptr)(unsafe.Pointer(ntheader)) + + unsafe.Offsetof(ntheader.OptionalHeader) + + uintptr(ntheader.FileHeader.SizeOfOptionalHeader)))[:ntheader.FileHeader.NumberOfSections] +} + +const ( + IMAGE_DIRECTORY_ENTRY_EXPORT = 0 // Export Directory + IMAGE_DIRECTORY_ENTRY_IMPORT = 1 // Import Directory + IMAGE_DIRECTORY_ENTRY_RESOURCE = 2 // Resource Directory + IMAGE_DIRECTORY_ENTRY_EXCEPTION = 3 // Exception Directory + IMAGE_DIRECTORY_ENTRY_SECURITY = 4 // Security Directory + IMAGE_DIRECTORY_ENTRY_BASERELOC = 5 // Base Relocation Table + IMAGE_DIRECTORY_ENTRY_DEBUG = 6 // Debug Directory + IMAGE_DIRECTORY_ENTRY_COPYRIGHT = 7 // (X86 usage) + IMAGE_DIRECTORY_ENTRY_ARCHITECTURE = 7 // Architecture Specific Data + IMAGE_DIRECTORY_ENTRY_GLOBALPTR = 8 // RVA of GP + IMAGE_DIRECTORY_ENTRY_TLS = 9 // TLS Directory + IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG = 10 // Load Configuration Directory + IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT = 11 // Bound Import Directory in headers + IMAGE_DIRECTORY_ENTRY_IAT = 12 // Import Address Table + IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT = 13 // Delay Load Import Descriptors + IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR = 14 // COM Runtime descriptor +) + +const IMAGE_SIZEOF_SHORT_NAME = 8 + +// Section header format +type IMAGE_SECTION_HEADER struct { + Name [IMAGE_SIZEOF_SHORT_NAME]byte + physicalAddressOrVirtualSize uint32 + VirtualAddress uint32 + SizeOfRawData uint32 + PointerToRawData uint32 + PointerToRelocations uint32 + PointerToLinenumbers uint32 + NumberOfRelocations uint16 + NumberOfLinenumbers uint16 + Characteristics uint32 +} + +func (ishdr *IMAGE_SECTION_HEADER) PhysicalAddress() uint32 { + return ishdr.physicalAddressOrVirtualSize +} + +func (ishdr *IMAGE_SECTION_HEADER) SetPhysicalAddress(addr uint32) { + ishdr.physicalAddressOrVirtualSize = addr +} + +func (ishdr *IMAGE_SECTION_HEADER) VirtualSize() uint32 { + return ishdr.physicalAddressOrVirtualSize +} + +func (ishdr *IMAGE_SECTION_HEADER) SetVirtualSize(addr uint32) { + ishdr.physicalAddressOrVirtualSize = addr +} + +const ( + // Section characteristics. + IMAGE_SCN_TYPE_REG = 0x00000000 // Reserved. + IMAGE_SCN_TYPE_DSECT = 0x00000001 // Reserved. + IMAGE_SCN_TYPE_NOLOAD = 0x00000002 // Reserved. + IMAGE_SCN_TYPE_GROUP = 0x00000004 // Reserved. + IMAGE_SCN_TYPE_NO_PAD = 0x00000008 // Reserved. + IMAGE_SCN_TYPE_COPY = 0x00000010 // Reserved. + + IMAGE_SCN_CNT_CODE = 0x00000020 // Section contains code. + IMAGE_SCN_CNT_INITIALIZED_DATA = 0x00000040 // Section contains initialized data. + IMAGE_SCN_CNT_UNINITIALIZED_DATA = 0x00000080 // Section contains uninitialized data. + + IMAGE_SCN_LNK_OTHER = 0x00000100 // Reserved. + IMAGE_SCN_LNK_INFO = 0x00000200 // Section contains comments or some other type of information. + IMAGE_SCN_TYPE_OVER = 0x00000400 // Reserved. + IMAGE_SCN_LNK_REMOVE = 0x00000800 // Section contents will not become part of image. + IMAGE_SCN_LNK_COMDAT = 0x00001000 // Section contents comdat. + IMAGE_SCN_MEM_PROTECTED = 0x00004000 // Obsolete. + IMAGE_SCN_NO_DEFER_SPEC_EXC = 0x00004000 // Reset speculative exceptions handling bits in the TLB entries for this section. + IMAGE_SCN_GPREL = 0x00008000 // Section content can be accessed relative to GP + IMAGE_SCN_MEM_FARDATA = 0x00008000 + IMAGE_SCN_MEM_SYSHEAP = 0x00010000 // Obsolete. + IMAGE_SCN_MEM_PURGEABLE = 0x00020000 + IMAGE_SCN_MEM_16BIT = 0x00020000 + IMAGE_SCN_MEM_LOCKED = 0x00040000 + IMAGE_SCN_MEM_PRELOAD = 0x00080000 + + IMAGE_SCN_ALIGN_1BYTES = 0x00100000 // + IMAGE_SCN_ALIGN_2BYTES = 0x00200000 // + IMAGE_SCN_ALIGN_4BYTES = 0x00300000 // + IMAGE_SCN_ALIGN_8BYTES = 0x00400000 // + IMAGE_SCN_ALIGN_16BYTES = 0x00500000 // Default alignment if no others are specified. + IMAGE_SCN_ALIGN_32BYTES = 0x00600000 // + IMAGE_SCN_ALIGN_64BYTES = 0x00700000 // + IMAGE_SCN_ALIGN_128BYTES = 0x00800000 // + IMAGE_SCN_ALIGN_256BYTES = 0x00900000 // + IMAGE_SCN_ALIGN_512BYTES = 0x00A00000 // + IMAGE_SCN_ALIGN_1024BYTES = 0x00B00000 // + IMAGE_SCN_ALIGN_2048BYTES = 0x00C00000 // + IMAGE_SCN_ALIGN_4096BYTES = 0x00D00000 // + IMAGE_SCN_ALIGN_8192BYTES = 0x00E00000 // + IMAGE_SCN_ALIGN_MASK = 0x00F00000 + + IMAGE_SCN_LNK_NRELOC_OVFL = 0x01000000 // Section contains extended relocations. + IMAGE_SCN_MEM_DISCARDABLE = 0x02000000 // Section can be discarded. + IMAGE_SCN_MEM_NOT_CACHED = 0x04000000 // Section is not cachable. + IMAGE_SCN_MEM_NOT_PAGED = 0x08000000 // Section is not pageable. + IMAGE_SCN_MEM_SHARED = 0x10000000 // Section is shareable. + IMAGE_SCN_MEM_EXECUTE = 0x20000000 // Section is executable. + IMAGE_SCN_MEM_READ = 0x40000000 // Section is readable. + IMAGE_SCN_MEM_WRITE = 0x80000000 // Section is writeable. + + // TLS Characteristic Flags + IMAGE_SCN_SCALE_INDEX = 0x00000001 // Tls index is scaled. +) + +// Based relocation format +type IMAGE_BASE_RELOCATION struct { + VirtualAddress uint32 + SizeOfBlock uint32 +} + +const ( + IMAGE_REL_BASED_ABSOLUTE = 0 + IMAGE_REL_BASED_HIGH = 1 + IMAGE_REL_BASED_LOW = 2 + IMAGE_REL_BASED_HIGHLOW = 3 + IMAGE_REL_BASED_HIGHADJ = 4 + IMAGE_REL_BASED_MACHINE_SPECIFIC_5 = 5 + IMAGE_REL_BASED_RESERVED = 6 + IMAGE_REL_BASED_MACHINE_SPECIFIC_7 = 7 + IMAGE_REL_BASED_MACHINE_SPECIFIC_8 = 8 + IMAGE_REL_BASED_MACHINE_SPECIFIC_9 = 9 + IMAGE_REL_BASED_DIR64 = 10 + + IMAGE_REL_BASED_IA64_IMM64 = 9 + + IMAGE_REL_BASED_MIPS_JMPADDR = 5 + IMAGE_REL_BASED_MIPS_JMPADDR16 = 9 + + IMAGE_REL_BASED_ARM_MOV32 = 5 + IMAGE_REL_BASED_THUMB_MOV32 = 7 +) + +// Export Format +type IMAGE_EXPORT_DIRECTORY struct { + Characteristics uint32 + TimeDateStamp uint32 + MajorVersion uint16 + MinorVersion uint16 + Name uint32 + Base uint32 + NumberOfFunctions uint32 + NumberOfNames uint32 + AddressOfFunctions uint32 // RVA from base of image + AddressOfNames uint32 // RVA from base of image + AddressOfNameOrdinals uint32 // RVA from base of image +} + +type IMAGE_IMPORT_BY_NAME struct { + Hint uint16 + Name [1]byte +} + +func IMAGE_ORDINAL(ordinal uintptr) uintptr { + return ordinal & 0xffff +} + +func IMAGE_SNAP_BY_ORDINAL(ordinal uintptr) bool { + return (ordinal & IMAGE_ORDINAL_FLAG) != 0 +} + +// Thread Local Storage +type IMAGE_TLS_DIRECTORY struct { + StartAddressOfRawData uintptr + EndAddressOfRawData uintptr + AddressOfIndex uintptr // PDWORD + AddressOfCallbacks uintptr // PIMAGE_TLS_CALLBACK *; + SizeOfZeroFill uint32 + Characteristics uint32 +} + +type IMAGE_IMPORT_DESCRIPTOR struct { + characteristicsOrOriginalFirstThunk uint32 // 0 for terminating null import descriptor + // RVA to original unbound IAT (PIMAGE_THUNK_DATA) + TimeDateStamp uint32 // 0 if not bound, + // -1 if bound, and real date\time stamp + // in IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT (new BIND) + // O.W. date/time stamp of DLL bound to (Old BIND) + ForwarderChain uint32 // -1 if no forwarders + Name uint32 + FirstThunk uint32 // RVA to IAT (if bound this IAT has actual addresses) +} + +func (imgimpdesc *IMAGE_IMPORT_DESCRIPTOR) Characteristics() uint32 { + return imgimpdesc.characteristicsOrOriginalFirstThunk +} + +func (imgimpdesc *IMAGE_IMPORT_DESCRIPTOR) OriginalFirstThunk() uint32 { + return imgimpdesc.characteristicsOrOriginalFirstThunk +} + +const ( + DLL_PROCESS_ATTACH = 1 + DLL_THREAD_ATTACH = 2 + DLL_THREAD_DETACH = 3 + DLL_PROCESS_DETACH = 0 +) + +//sys loadLibraryA(libFileName *byte) (module windows.Handle, err error) = kernel32.LoadLibraryA +//sys getProcAddress(module windows.Handle, procName *byte) (addr uintptr, err error) = kernel32.GetProcAddress +//sys isBadReadPtr(addr uintptr, ucb uintptr) (ret bool) = kernel32.IsBadReadPtr + +type SYSTEM_INFO struct { + ProcessorArchitecture uint16 + Reserved uint16 + PageSize uint32 + MinimumApplicationAddress uintptr + MaximumApplicationAddress uintptr + ActiveProcessorMask uintptr + NumberOfProcessors uint32 + ProcessorType uint32 + AllocationGranularity uint32 + ProcessorLevel uint16 + ProcessorRevision uint16 +} |