A set of classes and command line tools that work with system firmware tables (ACPI, SMBIOS).
Distributed under the MIT license.
FirmwareTables class enumerates system firmware tables and gets them in binary form, using EnumSystemFirmwareTables and GetSystemFirmwareTable Windows API functions.
Example 1: System firmware tables enumaration
foreach (FirmwareTableType tableType in Enum.GetValues(typeof(FirmwareTableType)))
{
var tableIds = EnumFirmwareTables(tableType);
foreach (var tableId in tableIds)
{
Console.WriteLine("'{0}' - 0x{1:X8}", tableType.ToString().ToUpper(), tableId);
}
}
Example 2: Save specific firmware table to binary file.
var data = FirmwareTables.GetFirmwareTable("ACPI", "MDSM");
File.WriteAllBytes("Acpi-Windows-License-Key.bin", data);
AcpiTable class parses a given ACPI table binary and provides access to ACPI table header fields and table payload.
Example 1: Extract OEM Windows product key from ACPI MSDM table
var table = FirmwareTables.GetAcpiTable("MDSM");
var productKeyLength = (int)table.GetPayloadUInt32(16);
var productKey = table.GetPayloadString(20, productKeyLength);
Console.WriteLine("OEM Windows product key: '{0}'", productKey);
FirmwareTables is a command-line C# program that lists system firmware tables and saves them to binary files.
This tool is part of dostools collection.
Syntax:
firmwaretables -list # lists available system firmware tables
firmwaretables -save <table type> <table id> [filename] [-silent] # saves specific system firmware table to binary file
firmwaretables -all [-silent] # saves all system firmware tables to binary files
firmwaretables -decode <table type> <table id> # decodes given table
table type and table id can be a string (e.g. ACPI) or a hex number (e.g. 0x52534D42).
If file name is omitted, it is created based on table type and ID in hex form, e.g. 52534D42_00000000.bin.
Exit codes:
- 0 - operation succeeded;
- 1 - operation failed;
- -1 - invalid command line syntax.
Example 1: List all available system firmware tables.
firmwaretables -list
firmwaretables -l
Example 2: Save specific firmware table to binary file.
firmwaretables -save ACPI MDSM "Acpi-Windows-License-Key.bin"
firmwaretables -s 0x52534D42 0x00000000 -silent
Example 3: Save all firmware tables to binary files.
firmwaretables -all"
firmwaretables -a -silent
Example 4: Decode specific firmware table.
firmwaretables -decode acpi mdsm
firmwaretables -d -0x52534D42 0x00000000
Example 1 output: List all available system firmware tables.
C:\temp>firmwaretables.exe -l
0x41435049 'ACPI' - 0x50474244 'PGBD'
0x41435049 'ACPI' - 0x4746434D 'GFCM'
0x41435049 'ACPI' - 0x50434146 'PCAF'
0x41435049 'ACPI' - 0x43495041 'CIPA'
0x41435049 'ACPI' - 0x544F4F42 'TOOB'
0x41435049 'ACPI' - 0x52414D44 'RAMD'
0x41435049 'ACPI' - 0x54455048 'TEPH'
0x41435049 'ACPI' - 0x54445046 'TDPF'
0x41435049 'ACPI' - 0x41504354 'APCT'
0x41435049 'ACPI' - 0x49464555 'IFEU'
0x41435049 'ACPI' - 0x54445353 'TDSS'
0x41435049 'ACPI' - 0x324D5054 '2MPT'
0x41435049 'ACPI' - 0x4D44534D 'MDSM'
0x41435049 'ACPI' - 0x32474244 '2GBD'
0x41435049 'ACPI' - 0x21465341 '!FSA'
0x41435049 'ACPI' - 0x54505341 'TPSA'
0x41435049 'ACPI' - 0x5449504C 'TIPL'
0x4649524D 'FIRM' - 0x000C0000 ' ♀ '
0x4649524D 'FIRM' - 0x000E0000 ' ♫ '
0x52534D42 'RSMB' - 0x00000000 ' '
Example 4 output: Decode specific firmware table.
C:\temp>firmwaretables -decode acpi mdsm
=== 'MSDM' ACPI table 0x4D44534D or 'MDSM'
Table size: 85 bytes
--- ACPI table header
Signature: 'MSDM'
Length: 85 bytes
Revision: 3
Checksum: 0x24 - OK
OEM ID: 'LENOVO'
OEM Table ID: 'CB-01 '
OEM Revison: 1
Creator ID: 'ACPI'
Creator Revison: 262144 or 0x00040000
--- ACPI table payload
Version: 1
Reserved: 0
Data Type: 1
Data Reserved: 0
Data Length: 29
Product Key: XYQGN-7YFFX-2FCYC-8T4FY-MY47F
C:\temp>firmwaretables.exe -d acpi tdsx
=== 'XSDT' ACPI table 0x54445358 or 'TDSX'
Table size: 252 bytes
--- ACPI table header
Signature: 'XSDT'
Length: 252 bytes
Revision: 1
Checksum: 0x29 - OK
OEM ID: 'LENOVO'
OEM Table ID: 'CB-01 '
OEM Revison: 1
Creator ID: ' '
Creator Revison: 16777235 or 0x01000013
--- ACPI table payload
Length: 216 bytes
000000: 00 90 FE 77 00 00 00 00 00 C0 FF 77 00 00 00 00 ??w Ayw
000010: 00 B0 FF 77 00 00 00 00 00 A0 FF 77 00 00 00 00 °yw yw
000020: 00 90 FF 77 00 00 00 00 00 80 FF 77 00 00 00 00 ?yw ?yw
000030: 00 70 FF 77 00 00 00 00 00 60 FF 77 00 00 00 00 pyw `yw
000040: 00 00 FF 77 00 00 00 00 00 F0 FE 77 00 00 00 00 yw ??w
000050: 00 E0 FE 77 00 00 00 00 00 D0 FE 77 00 00 00 00 a?w ??w
000060: 00 C0 FE 77 00 00 00 00 00 B0 FE 77 00 00 00 00 A?w °?w
000070: 00 A0 FE 77 00 00 00 00 00 80 FE 77 00 00 00 00 ?w ??w
000080: 00 70 FE 77 00 00 00 00 00 60 FE 77 00 00 00 00 p?w `?w
000090: 00 50 FE 77 00 00 00 00 00 50 FC 77 00 00 00 00 P?w Puw
0000A0: 00 40 FC 77 00 00 00 00 00 20 FC 77 00 00 00 00 @uw uw
0000B0: 00 10 FC 77 00 00 00 00 00 00 FC 77 00 00 00 00 uw uw
0000C0: 00 B0 FB 77 00 00 00 00 00 A0 FB 77 00 00 00 00 °uw uw
0000D0: 00 90 FB 77 00 00 00 00 ?uw
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