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patterns/uefi: Added UEFI pattern (#8)

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Added UEFI structs

Signed-off-by: Morten Linderud <morten@linderud.pw>
Co-authored-by: Nik <werwolv98@gmail.com>
This commit is contained in:
Morten Linderud
2023-03-23 11:52:50 +01:00
committed by GitHub
parent f3de35a320
commit a31d290005
2 changed files with 68 additions and 0 deletions
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README.md
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@@ -74,6 +74,7 @@ Hex patterns, include patterns and magic files for the use with the ImHex Hex Ed
| Lua 5.4 | | [`patterns/lua54.hexpat`](patterns/lua54.hexpat) | Lua 5.4 bytecode |
| DEX | | [`patterns/dex.hexpat`](patterns/dex.hexpat) | Dalvik EXecutable Format |
| DS_Store | `application/octet-stream` | [`patterns/dsstore.hexpat`](patterns/dsstore.hexpat) | .DS_Store file format |
| UEFI | | `patterns/uefi.hexpat` | UEFI structs for parsing efivars |
### Scripts

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patterns/uefi.hexpat Normal file
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@@ -0,0 +1,67 @@
#pragma MIME data
#define WIN_CERT_TYPE_PKCS_SIGNED_DATA 0x0002
#define WIN_CERT_TYPE_EFI_PKCS115 0x0EF0
#define WIN_CERT_TYPE_EFI_GUID 0x0EF1
struct EFI_TIME {
u16 Year; // 1900 – 9999
u8 Month; // 1 – 12
u8 Day; // 1 – 31
u8 Hour; // 0 – 23
u8 Minute; // 0 – 59
u8 Second; // 0 – 59
u8 Pad1;
u32 Nanosecond; // 0 – 999,999,999
s16 TimeZone; // -1440 to 1440 or 2047
u8 Daylight;
u8 Pad2;
};
struct EFI_GUID {
u32 Data1;
u16 Data2;
u16 Data3;
u8 Data4[8];
};
struct WIN_CERTIFICATE {
u32 Length;
u16 Revision;
u16 CertificateType;
//u8 Certificate[];
};
struct WIN_CERTIFICATE_UEFI_GUID {
WIN_CERTIFICATE Hdr;
EFI_GUID CertType;
u8 CertData[Hdr.Length-SizeofWIN_CERTIFICATE_UEFI_GUID];
};
#define SizeofWIN_CERTIFICATE_UEFI_GUID 24
struct EFI_VARIABLE_AUTHENTICATION_2 {
EFI_TIME TimeStamp;
WIN_CERTIFICATE_UEFI_GUID AuthInfo;
};
struct EFI_SIGNATURE_DATA {
EFI_GUID SignatureOwner;
u8 SignatureData[1076];
};
struct EFI_SIGNATURE_LIST {
EFI_GUID SignatureType;
u32 SignatureListSize;
u32 SignatureHeaderSize;
u32 SignatureSize;
u8 SignatureHeader[SignatureHeaderSize];
EFI_SIGNATURE_DATA Signatures;
};
struct dbx_esl {
EFI_VARIABLE_AUTHENTICATION_2 Auth;
EFI_SIGNATURE_LIST x509_1;
};
dbx_esl header @ 0x00;