1 2#------------------------------------------------------------------------------ 3# $File: virtual,v 1.14 2021/04/26 15:56:00 christos Exp $ 4# From: James Nobis <quel@quelrod.net> 5# Microsoft hard disk images for: 6# Virtual Server 7# Virtual PC 8# VirtualBox 9# URL: http://fileformats.archiveteam.org/wiki/VHD_(Virtual_Hard_Disk) 10# Reference: https://download.microsoft.com/download/f/f/e/ffef50a5-07dd-4cf8-aaa3-442c0673a029/ 11# Virtual%20Hard%20Disk%20Format%20Spec_10_18_06.doc 120 string connectix Microsoft Disk Image, Virtual Server or Virtual PC 13# alternative shorter names 14#0 string connectix Microsoft Virtual Hard Disk image 15#0 string connectix Microsoft Virtual HD image 16!:mime application/x-virtualbox-vhd 17!:ext vhd 18# Features is a bit field used to indicate specific feature support 19#>8 ubelong !0x00000002 \b, Features %#x 20# Reserved. This bit must always be set to 1. 21#>8 ubelong &0x00000002 \b, Reserved %#x 22# File Format Version for the current specification 0x00010000 23#>12 ubelong !0x00010000 \b, Version %#8.8x 24# Data Offset only found 0x200 25#>16 ubequad !0x200 \b, Data Offset %#llx 26#>16 ubequad x \b, at %#llx 27# Dynamic Disk Header cookie like cxsparse 28#>(16.Q) string x "%-.8s" 29# This field contains a Unicode string (UTF-16) of the parent hard disk filename 30#>(16.Q+64) ubequad x \b, parent name %#llx 31# Creator Application 32# vpc~Microsoft Virtual PC, vs~Microsoft Virtual Server, vbox~VirtualBox, d2v~disk2vhd 33>28 string x \b, Creator %-4.4s 34# Creator Version: 0x00010000~Virtual Server 2004, 0x00050000~Virtual PC 2004 35# holds the major/minor version of the application that created the image 36>32 ubeshort x %x 37>34 ubeshort x \b.%x 38#>32 ubelong x \b, Version %#8.8x 39# Creator Host OS: 0x5769326B~Windows (Wi2k), 0x4D616320~Macintosh (Mac) 40>36 ubelong x ( 41>>36 ubelong 0x5769326B \bW2k 42>>36 ubelong 0x4D616320 \bMac 43>>36 default x \b0x 44>>>36 ubelong x \b%8.8x 45# creation Time in seconds since 1 Jan 2000 UTC~946684800 sec. since Unix Epoch 46>24 bedate+946684800 x \b) %s 47# Original Size 48#>40 ubequad x \b, o.-Size %#llx 49# Current Size is same as original size, but change when disk is expanded 50#>48 ubequad x \b, Size %#llx 51>48 ubequad x \b, %llu bytes 52# Disk Geometry: cylinder, heads, and sectors/track for hard disk 53#>56 ubeshort x \b, Cylinder %#x 54>56 ubeshort x \b, CHS %u 55# Heads 56#>58 ubyte x \b, Heads %#x 57>58 ubyte x \b/%u 58# Sectors per track 59#>59 ubyte x \b, Sectors %#x 60>59 ubyte x \b/%u 61# Disk Type: 3~Dynamic hard disk 62>60 ubelong !0x3 \b, type %#x 63# Checksum 64#>64 ubelong x \b, cksum %#x 65# universally unique identifier (UUID) to associate a parent with its differencing image 66#>68 ubequad x \b, id %#16.16llx 67#>76 ubequad x \b-%16.16llx 68# Saved State: 1~Saved State 69>84 ubyte !0 \b, State %#x 70# Reserved 427 bytes with nils 71#>85 ubequad !0 \b, Reserved %#16.16llx 72 73# From: Joerg Jenderek 74# URL: https://msdn.microsoft.com/en-us/library/mt740058.aspx 75# Reference: https://winprotocoldoc.blob.core.windows.net/productionwindowsarchives/ 76# MS-VHDX/[MS-VHDX].pdf 77# Note: extends the VHD format with new capabilities, such as a 16TB maximum size 78# TODO: find and display values like virtual size, disk size, cluster_size, etc 79# display id in GUID format 80# 81# VHDX_FILE_IDENTIFIER signature 0x656C696678646876 820 string vhdxfile 83# VHDX_HEADER signature. 1 header is stored at offset 64KB and the other at 128KB 84>0x10000 string head Microsoft Disk Image eXtended 85#>0x20000 string head \b, 2nd header 86#!:mime application/x-virtualbox-vhdx 87!:ext vhdx 88# Creator[256] like "QEMU v3.0.0", "Microsoft Windows 6.3.9600.18512" 89>>8 lestring16 x \b, by %.256s 90# The Checksum field is a CRC-32C hash over the entire 4 KB structure 91#>>0x10004 ulelong x \b, CRC %#x 92# SequenceNumber 93>>0x10008 ulequad x \b, sequence %#llx 94# FileWriteGuid 95#>>0x10010 ubequad x \b, file id %#llx 96#>>>0x10018 ubequad x \b-%llx 97# DataWriteGuid 98#>>0x10020 ubequad x \b, data id %#llx 99#>>>0x10028 ubequad x \b-%llx 100# LogGuid. If this field is zero, then the log is empty or has no valid entries 101>>0x10030 ubequad >0 \b, log id %#llx 102>>>0x10038 ubequad x \b-%llx 103# LogVersion. If not 0 there is a log to replay 104>>0x10040 uleshort >0 \b, LogVersion %#x 105# Version. This field must be set to 1 106>>0x10042 uleshort !1 \b, Version %#x 107# LogLength must be multiples of 1 MB 108>>0x10044 ulelong/1048576 >1 \b, LogLength %u MB 109# LogOffset (normally 0x100000 when log direct after header); multiples of 1 MB 110>>0x10048 ulequad !0x100000 \b, LogOffset %#llx 111# Log Entry Signature must be 0x65676F6C~loge 112>>(0x10048.q) ulelong !0x65676F6C \b, NO Log Signature 113>>(0x10048.q) ulelong =0x65676F6C \b; LOG 114# Log Entry Checksum 115#>>>(0x10048.q+4) ulelong x \b, Log CRC %#x 116# Log Entry Length must be a multiple of 4 KB 117>>>(0x10048.q+8) ulelong/1024 >4 \b, EntryLength %u KB 118# Log Entry Tail must be a multiple of 4 KB 119#>>>(0x10048.q+12) ulelong x \b, Tail %#x 120# Log Entry SequenceNumber 121#>>>(0x10048.q+16) ulequad x \b, # %#llx 122# Log Entry DescriptorCount may be zero. only 4 bytes in other docs instead 8 123#>>>(0x10048.q+24) ulelong x \b, DescriptorCount %#llx 124# Log Entry Reserved must be set to 0 125>>>(0x10048.q+28) ulelong !0 \b, Reserved %#x 126# Log Entry LogGuid 127#>>>(0x10048.q+32) ubequad x \b, Log id %#llx 128#>>>(0x10048.q+40) ubequad x \b-%llx 129# Log Entry FlushedFileOffset should VHDX size when entry is written. 130#>>>(0x10048.q+48) ulequad x \b, FlushedFileOffset %llu 131# Log Entry LastFileOffset 132#>>>(0x10048.q+56) ulequad x \b, LastFileOffset %llu 133# filling 134#>>>(0x10048.q+64) ulequad >0 \b, filling %llx 135# Reserved[4016] 136#>>0x10050 ulequad >0 \b, Reserved %#llx 137# VHDX_REGION_TABLE_HEADER Signature 0x69676572~regi at offset 192 KB and 256 KB 138>0x30000 ulelong !0x69676572 \b, 1st region INVALID 139>0x30000 ulelong =0x69676572 \b; region 140# region Checksum. CRC-32C hash over the entire 64-KB table 141#>>0x30004 ulelong x \b, CRC %#x 142# The EntryCount specifies number of valid entries; Found 2; This must be =< 2047. 143>>0x30008 ulelong x \b, %u entries 144# reserved must be zero 145#>>0x3000C ulelong !0 \b, RESERVED %#x 146# Region Table Entry starts with identifier for the object. often BAT id 147>>0x30010 use vhdx-id 148# FileOffset 149>>0x30020 ulequad x \b, at %#llx 150# Length. Specifies the length of the object within the file 151#>>0x30028 ulelong x \b, Length %#x 152# 1 means region entry is required. if region not recognized, then REFUSE to load VHDX 153>>0x3002C ulelong x \b, Required %u 154# 2nd region entry often metadata id 155>>0x30030 use vhdx-id 156# 2nd entry FileOffset 157>>0x30040 ulequad x \b, at %#llx 158# 1 means region entry is required. if region not recognized, then REFUSE to load VHDX 159>>0x3004C ulelong x \b, Required %u 160# 2nd region 161>>0x40000 ulelong !0x69676572 \b, 2nd region INVALID 162# check in vhdx images for known id and show names instead hexadecimal 1630 name vhdx-id 164# https://www.windowstricks.in/online-windows-guid-converter 165# 2DC27766-F623-4200-9D64-115E9BFD4A08 BAT GUID 166# 6677C22D23F600429D64115E9BFD4A08 BAT ID 167>0 ubequad =0x6677C22D23F60042 168>>8 ubequad =0x9D64115E9BFD4A08 \b, id BAT 169# no BAT id 170>>8 default x 171>>>0 use vhdx-id-hex 172# 8B7CA206-4790-4B9A-B8FE-575F050F886E Metadata region GUID 173# 06A27C8B90479A4BB8FE575F050F886E Metadata region ID 174>0 ubequad =0x06A27C8B90479A4B 175>>8 ubequad =0xB8FE575F050F886E \b, id Metadata 176# no Metadata id 177>>8 default x 178>>>0 use vhdx-id-hex 179# 2FA54224-CD1B-4876-B211-5DBED83BF4B8 Virtual Disk Size GUID 180# 2442A52F1BCD7648B2115DBED83BF4B8 Virtual Disk Size ID 181# value "virtual size" can be verified by command `qemu-img info ` 182>0 ubequad =0x2442A52F1BCD7648 183>>8 ubequad =0xB2115DBED83BF4B8 \b, id vsize 184# no Virtual Disk Size ID 185>>8 default x 186>>>0 use vhdx-id-hex 187# other ids 188>0 default x 189>>0 use vhdx-id-hex 190# in vhdx images show id as hexadecimal 1910 name vhdx-id-hex 192>0 ubequad x \b, ID %#16.16llx 193>8 ubequad x \b-%16.16llx 194# 195# libvirt 196# From: Philipp Hahn <hahn@univention.de> 1970 string LibvirtQemudSave Libvirt QEMU Suspend Image 198>0x10 lelong x \b, version %u 199>0x14 lelong x \b, XML length %u 200>0x18 lelong 1 \b, running 201>0x1c lelong 1 \b, compressed 202 2030 string LibvirtQemudPart Libvirt QEMU partial Suspend Image 204# From: Alex Beregszaszi <alex@fsn.hu> 2050 string/b COWD VMWare3 206>4 byte 3 disk image 207>>32 lelong x (%d/ 208>>36 lelong x \b%d/ 209>>40 lelong x \b%d) 210>4 byte 2 undoable disk image 211>>32 string >\0 (%s) 212 2130 string/b VMDK VMware4 disk image 2140 string/b KDMV VMware4 disk image 215 216#-------------------------------------------------------------------- 217# Qemu Emulator Images 218# Lines written by Friedrich Schwittay (f.schwittay@yousable.de) 219# Updated by Adam Buchbinder (adam.buchbinder@gmail.com) 220# Made by reading sources, reading documentation, and doing trial and error 221# on existing QCOW files 2220 string/b QFI\xFB 223 224# Uncomment the following line to display Magic (only used for debugging 225# this magic number) 226#>0 string/b x , Magic: %s 227 228# There are currently 2 Versions: "1" and "2". 229# https://www.gnome.org/~markmc/qcow-image-format-version-1.html 230>4 belong !1 QEMU QCOW2 Image 231>4 belong 1 QEMU QCOW Image (v1) 232 233# Using the existence of the Backing File Offset to determine whether 234# to read Backing File Information 235>>12 belong >0 \b, has backing file ( 236# Note that this isn't a null-terminated string; the length is actually 237# (16.L). Assuming a null-terminated string happens to work usually, but it 238# may spew junk until it reaches a \0 in some cases. 239>>>(12.L) string >\0 \bpath %s 240 241# Modification time of the Backing File 242# Really useful if you want to know if your backing 243# file is still usable together with this image 244>>>>20 bedate >0 \b, mtime %s) 245>>>>20 default x \b) 246 247# Size is stored in bytes in a big-endian u64. 248>>24 bequad x \b, %lld bytes 249 250# 1 for AES encryption, 0 for none. 251>>36 belong 1 \b, AES-encrypted 252 253# https://www.gnome.org/~markmc/qcow-image-format.html 254>4 belong 2 (v2) 255# Using the existence of the Backing File Offset to determine whether 256# to read Backing File Information 257>>8 bequad >0 \b, has backing file 258# Note that this isn't a null-terminated string; the length is actually 259# (16.L). Assuming a null-terminated string happens to work usually, but it 260# may spew junk until it reaches a \0 in some cases. Also, since there's no 261# .Q modifier, we just use the bottom four bytes as an offset. Note that if 262# the file is over 4G, and the backing file path is stored after the first 4G, 263# the wrong filename will be printed. (This should be (8.Q), when that syntax 264# is introduced.) 265>>>(12.L) string >\0 (path %s) 266>>24 bequad x \b, %lld bytes 267>>32 belong 1 \b, AES-encrypted 268 269>4 belong 3 (v3) 270# Using the existence of the Backing File Offset to determine whether 271# to read Backing File Information 272>>8 bequad >0 \b, has backing file 273# Note that this isn't a null-terminated string; the length is actually 274# (16.L). Assuming a null-terminated string happens to work usually, but it 275# may spew junk until it reaches a \0 in some cases. Also, since there's no 276# .Q modifier, we just use the bottom four bytes as an offset. Note that if 277# the file is over 4G, and the backing file path is stored after the first 4G, 278# the wrong filename will be printed. (This should be (8.Q), when that syntax 279# is introduced.) 280>>>(12.L) string >\0 (path %s) 281>>24 bequad x \b, %lld bytes 282>>32 belong 1 \b, AES-encrypted 283 284>4 default x (unknown version) 285 2860 string/b QEVM QEMU suspend to disk image 287 288# QEMU QED Image 289# https://wiki.qemu.org/Features/QED/Specification 2900 string/b QED\0 QEMU QED Image 291 292# VDI Image 293# Sun xVM VirtualBox Disk Image 294# From: Richard W.M. Jones <rich@annexia.org> 295# VirtualBox Disk Image 2960x40 ulelong 0xbeda107f VirtualBox Disk Image 297>0x44 uleshort >0 \b, major %u 298>0x46 uleshort >0 \b, minor %u 299>0 string >\0 (%s) 300>368 lequad x \b, %lld bytes 301 3020 string/b Bochs\ Virtual\ HD\ Image Bochs disk image, 303>32 string x type %s, 304>48 string x subtype %s 305 3060 lelong 0x02468ace Bochs Sparse disk image 307 308