410 lines
12 KiB
C
410 lines
12 KiB
C
#pragma once
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#include <Domito.MinCrypt.h>
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/* ___
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* / __|___ _ __ _ __ ___ _ _
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* | (__/ _ \ ' \| ' \/ _ \ ' \
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* \___\___/_|_|_|_|_|_\___/_||_|
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*
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*/
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//
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// Library initialization tasks. Call once in your DriverEntry
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//
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_Success_(return == STATUS_SUCCESS)
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_Must_inspect_result_
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_IRQL_requires_max_(PASSIVE_LEVEL)
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EXTERN_C
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NTSTATUS
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DomitoInit();
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_IRQL_requires_max_(PASSIVE_LEVEL)
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EXTERN_C
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void
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DomitoShutdown();
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/* __ __ __ __ _
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* | \/ |___ _ __ ___ _ _ _ _ | \/ |__ _ _ _ __ _ __ _ ___ _ __ ___ _ _| |_
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* | |\/| / -_) ' \/ _ \ '_| || | | |\/| / _` | ' \/ _` / _` / -_) ' \/ -_) ' \ _|
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* |_| |_\___|_|_|_\___/_| \_, | |_| |_\__,_|_||_\__,_\__, \___|_|_|_\___|_||_\__|
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* |__/ |___/
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*/
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//
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// Allocator function the library uses.
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//
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typedef
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_IRQL_requires_same_
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_Function_class_(EVT_DOMITO_ALLOCATE_ROUTINE)
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__drv_allocatesMem(mem)
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PVOID
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NTAPI
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EVT_DOMITO_ALLOCATE_ROUTINE(
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_In_ SIZE_T ByteSize
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);
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typedef EVT_DOMITO_ALLOCATE_ROUTINE* PFN_DOMITO_ALLOCATE_ROUTINE;
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//
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// Freeing function the library uses.
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//
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typedef
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_IRQL_requires_same_
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_Function_class_(EVT_DOMITO_FREE_ROUTINE)
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void
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NTAPI
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EVT_DOMITO_FREE_ROUTINE(
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_In_ __drv_freesMem(mem) PVOID Memory
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);
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typedef EVT_DOMITO_FREE_ROUTINE* PFN_DOMITO_FREE_ROUTINE;
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//
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// Get the original set of Domito memory functions.
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//
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EXTERN_C
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void
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DomitoGetOriginalMemoryFunctions(
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_Out_opt_ PFN_DOMITO_ALLOCATE_ROUTINE* Allocator,
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_Out_opt_ PFN_DOMITO_FREE_ROUTINE* Free
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);
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//
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// Get the current set of Domito memory functions.
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//
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EXTERN_C
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void
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DomitoGetMemoryFunctions(
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_Out_opt_ PFN_DOMITO_ALLOCATE_ROUTINE* Allocator,
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_Out_opt_ PFN_DOMITO_FREE_ROUTINE* Free
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);
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//
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// Replace Domito's memory allocation functions with a custom set
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EXTERN_C
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void
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DomitoSetMemoryFunctions(
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_In_opt_ PFN_DOMITO_ALLOCATE_ROUTINE Allocator,
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_In_opt_ PFN_DOMITO_FREE_ROUTINE Free
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);
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/* ___ _ _
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* / __|_ _ _ _ _ __| |_ ___ __ _ _ _ __ _ _ __| |_ _ _
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* | (__| '_| || | '_ \ _/ _ \/ _` | '_/ _` | '_ \ ' \ || |
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* \___|_| \_, | .__/\__\___/\__, |_| \__,_| .__/_||_\_, |
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* |__/|_| |___/ |_| |__/
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*/
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//
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// This structure encapsulates a signature used in verifying executable files.
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//
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#if !defined(WIN_CERTIFICATE)
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typedef struct _WIN_CERTIFICATE
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{
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DWORD dwLength;
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WORD wRevision;
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WORD wCertificateType;
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BYTE bCertificate[ANYSIZE_ARRAY];
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} WIN_CERTIFICATE, *LPWIN_CERTIFICATE;
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#endif
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//
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// UM definitions of WinCrypt.h
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//
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#if !defined(WIN_CERT_TYPE_X509)
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#define WIN_CERT_TYPE_X509 (0x0001) // The bCertificate member contains an X.509 certificate.
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#endif
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#if !defined(WIN_CERT_TYPE_PKCS_SIGNED_DATA)
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#define WIN_CERT_TYPE_PKCS_SIGNED_DATA (0x0002) // The bCertificate member contains a PKCS SignedData structure.
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#endif
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#if !defined(WIN_CERT_TYPE_PKCS1_SIGN)
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#define WIN_CERT_TYPE_PKCS1_SIGN (0x0009) // The bCertificate member contains PKCS1_MODULE_SIGN fields.
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#endif
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#if !defined(CALG_SHA1)
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#define CALG_SHA1 0x8004u
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#endif
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#if !defined(CALG_SHA256)
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#define CALG_SHA256 0x800cu
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#endif
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#if !defined(CALG_SHA384)
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#define CALG_SHA384 0x800du
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#endif
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#if !defined(CALG_SHA512)
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#define CALG_SHA512 0x800eu
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#endif
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//
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// Converts a WinCrypt CALG_ID to a BCRYPT_ALGORITHM identifier.
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//
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PCWSTR
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FORCEINLINE
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DOMITO_CALG_TO_BCRYPT_ALGORITHM(
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_In_ UINT32 Calg
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)
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{
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switch (Calg)
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{
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case CALG_SHA1:
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return BCRYPT_SHA1_ALGORITHM;
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case CALG_SHA256:
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return BCRYPT_SHA256_ALGORITHM;
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case CALG_SHA384:
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return BCRYPT_SHA384_ALGORITHM;
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case CALG_SHA512:
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return BCRYPT_SHA512_ALGORITHM;
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default:
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return L"Unknown";
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}
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}
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/* ___ _ ___ _ _ _
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* / __|___ __| |___ |_ _|_ _| |_ ___ __ _ _ _(_) |_ _ _
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* | (__/ _ \/ _` / -_) | || ' \ _/ -_) _` | '_| | _| || |
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* \___\___/\__,_\___| |___|_||_\__\___\__, |_| |_|\__|\_, |
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* |___/ |__/
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*/
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//
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// Heuristically detects the CALG_ID in the first WIN_CERTIFICATE using byte patterns.
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// Returns CALG_SHA1 when absent, malformed, or unrecognized; this is not ASN.1
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// validation or signature verification. The directory array must contain the
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// IMAGE_DIRECTORY_ENTRY_SECURITY entry.
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//
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_IRQL_requires_max_(DISPATCH_LEVEL)
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EXTERN_C
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UINT32
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DomitoGetPortableExecutableDigestKind(
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_In_ PUCHAR pPeBytes,
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_In_ ULONG PeSize,
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_In_ PIMAGE_DATA_DIRECTORY pImgDataDirectory
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);
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// Reads the first PKCS#7 entry's SpcIndirectDataContent DigestInfo algorithm
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// using bounded DER navigation. Does not validate the signature or select among
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// multiple/nested signatures. Absent table => STATUS_NOT_FOUND; unsupported OID
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// or certificate type => STATUS_NOT_SUPPORTED; malformed DER => format error.
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// Unlike the compatibility helper above, it never silently falls back to SHA-1.
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_IRQL_requires_max_(DISPATCH_LEVEL)
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EXTERN_C
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NTSTATUS
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DomitoGetPortableExecutableDigestKindEx(
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_In_reads_bytes_(PeSize) const UCHAR* PeBytes,
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_In_ ULONG PeSize,
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_In_reads_(IMAGE_DIRECTORY_ENTRY_SECURITY + 1) const IMAGE_DATA_DIRECTORY* Directories,
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_Out_ PUINT32 DigestCalg
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);
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// Algorithm-explicit Authenticode digest for the supported layout subset:
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// bounded PE32/PE32+ headers, contiguous nonoverlapping raw sections in file
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// offset order, optional overlay before a complete EOF certificate table.
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// SHA-1/256/384/512 supported. Gaps/overlaps/nonterminal certificates are rejected.
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// No signature trust decision is made. Outputs are cleared on failure; the
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// certificate borrows stable input memory, and only the digest must be freed.
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// See docs/authenticode-digests.md for policy and Windows SIP comparisons.
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_Success_(return == STATUS_SUCCESS)
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_Must_inspect_result_
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_IRQL_requires_max_(PASSIVE_LEVEL)
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EXTERN_C
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NTSTATUS
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DomitoCalculatePortableExecutableDigestEx(
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_In_reads_bytes_(PeSize) const UCHAR* PeBytes,
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_In_ ULONG PeSize,
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_In_ UINT32 HashAlgId,
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_Out_ PULONG DigestSize,
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_Outptr_result_bytebuffer_(*DigestSize) PVOID* Digest,
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_Outptr_result_maybenull_ LPWIN_CERTIFICATE* Certificate,
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_Out_ PULONG SecuritySize
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);
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//
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// Calculates a PE digest using the existing linear hashing convention.
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// Validates accessed header/certificate ranges and clears outputs on failure
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// when all output pointers are valid. The input buffer must remain stable.
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// The returned certificate pointer borrows the input buffer; free only the digest
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// with DomitoFreePortableExecutableDigest. Algorithm detection is heuristic;
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// general section-ordered Authenticode hashing is not implemented here.
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//
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_Success_(return == STATUS_SUCCESS)
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_Must_inspect_result_
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_IRQL_requires_max_(PASSIVE_LEVEL)
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EXTERN_C
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NTSTATUS
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DomitoCalculatePortableExecutableDigest(
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_In_ PUCHAR pPeBytes,
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_In_ ULONG PeSize,
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_Out_ PUINT32 pDigestCalgOut,
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_Out_ PULONG pDigestSizeOut,
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_Out_ PVOID* pDigestOut,
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_Outptr_result_maybenull_ LPWIN_CERTIFICATE* pCertOut,
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_Out_ PULONG pSizeOfSecurityDirectory
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);
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//
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// Frees the memory allocated by DomitoCalculatePortableExecutableDigest.
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//
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_IRQL_requires_max_(DISPATCH_LEVEL)
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EXTERN_C
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void
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DomitoFreePortableExecutableDigest(
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_In_ PVOID pDigestOut
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);
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#define DOMITO_CI_SOURCE_EMBEDDED 1UL
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#define DOMITO_CI_SOURCE_CATALOG 2UL
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// Policy-explicit legacy helper. SHA-1/256 only; hash size must match algorithm.
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// Policy objects must be zero-initialized or own valid CI results; both are freed
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// before each attempt. Caller owns both final policy outputs, including failure.
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// Embedded validation is tried first; only INVALID_IMAGE_HASH permits catalog
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// fallback/reload. AcceptedCatalogPolicyBits uses ANY-overlap catalog filtering;
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// RequireTrustedCatalog gates the observed marker, not publisher identity.
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// Source is 0 on failure, EMBEDDED/CATALOG on success. Stable file bytes and a
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// handle valid in the caller's current process context are required during I/O.
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_Success_(return == STATUS_SUCCESS)
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_Must_inspect_result_
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_IRQL_requires_max_(PASSIVE_LEVEL)
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EXTERN_C
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NTSTATUS
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DomitoValidateFileLegacyModeEx(
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_In_ HANDLE FileHandle,
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_In_reads_bytes_(HashSize) PVOID Hash,
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_In_ UINT32 HashSize,
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_In_ ALG_ID HashAlgId,
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_In_ const IMAGE_DATA_DIRECTORY* SecurityDirectory,
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_Inout_ MINCRYPT_POLICY_INFO* PolicyInfo,
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_Out_ LARGE_INTEGER* SigningTime,
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_Inout_ MINCRYPT_POLICY_INFO* TimeStampPolicyInfo,
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_In_ UINT32 AcceptedCatalogPolicyBits,
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_In_ BOOLEAN RequireTrustedCatalog,
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_Out_ PULONG ValidationSource
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);
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//
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// Compatibility wrapper around DomitoValidateFileLegacyModeEx, with catalog
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// mask DOMITO_CI_LEGACY_CATALOG_POLICY_BITS and RequireTrustedCatalog = FALSE.
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// The same initialization, ownership, hash, handle, and stable-file rules apply.
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//
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_Success_(return == STATUS_SUCCESS)
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_Must_inspect_result_
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_IRQL_requires_max_(PASSIVE_LEVEL)
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EXTERN_C
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NTSTATUS
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DomitoValidateFileLegacyMode(
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_In_ HANDLE FileHandle,
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_In_ PVOID Hash,
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_In_ UINT32 HashSize,
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_In_ ALG_ID HashAlgId,
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_In_ const IMAGE_DATA_DIRECTORY* SecurityDirectory,
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_Inout_ MINCRYPT_POLICY_INFO* PolicyInfo,
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_Out_ LARGE_INTEGER* SigningTime,
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_Inout_ MINCRYPT_POLICY_INFO* TimeStampPolicyInfo
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);
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/* __ __ _
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* | \/ (_)___ __
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* | |\/| | (_-</ _|_
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* |_| |_|_/__/\__(_)
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*
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*/
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//
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// Finds the base address of a driver module.
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//
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_Success_(return == STATUS_SUCCESS)
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_Must_inspect_result_
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_IRQL_requires_max_(PASSIVE_LEVEL)
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EXTERN_C
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NTSTATUS
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DomitoFindModuleBaseAddress(
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_In_ PANSI_STRING ModuleName,
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_Inout_opt_ PVOID* ModuleBase
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);
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//
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// Finds an export by name (case-insensitive) in a valid loader-mapped module.
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// ModuleBase must remain mapped; arbitrary file buffers are not supported.
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// Export table spans are checked against SizeOfImage. Forwarded exports return
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// STATUS_NOT_SUPPORTED; the optional output is cleared before lookup.
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//
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_Success_(return == STATUS_SUCCESS)
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_Must_inspect_result_
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_IRQL_requires_max_(PASSIVE_LEVEL)
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EXTERN_C
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NTSTATUS
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DomitoFindExportedFunctionAddress(
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_In_ PVOID ModuleBase,
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_In_ PANSI_STRING FunctionName,
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_Inout_opt_ PVOID* FunctionAddress
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);
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//
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// Scans a provided buffer for a memory pattern.
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//
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_Success_(return == STATUS_SUCCESS)
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_Must_inspect_result_
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_IRQL_requires_max_(DISPATCH_LEVEL)
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EXTERN_C
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NTSTATUS
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DomitoMemorySearchPattern(
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_In_ PCUCHAR pcPattern,
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_In_ UCHAR uWildcard,
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_In_ SIZE_T puLen,
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_In_ PVOID pcBase,
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_In_ SIZE_T puSize,
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_Outptr_result_maybenull_ PVOID* ppMatch
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);
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//
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// Reads exactly BufferSize bytes at a nonnegative absolute file offset.
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// Same completion, buffer, handle, APC, and short-read contract as DomitoReadFile.
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//
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_Success_(return == STATUS_SUCCESS)
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_Must_inspect_result_
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_IRQL_requires_max_(PASSIVE_LEVEL)
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EXTERN_C
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NTSTATUS
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DomitoReadFileAt(
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_In_ HANDLE FileHandle,
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_Out_writes_bytes_(BufferSize) PVOID Buffer,
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_In_ ULONG BufferSize,
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_In_ const LARGE_INTEGER* ByteOffset
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);
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//
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// Reads exactly BufferSize bytes from file offset zero. Short reads return
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// STATUS_END_OF_FILE; Buffer may then contain a partial read. Zero length succeeds.
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// Waits for pending I/O on a private event before returning. Requires PASSIVE_LEVEL
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// with special kernel APCs enabled, a readable handle valid in the current process
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// (or a kernel handle), and a buffer that remains valid for the entire call.
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// For synchronous handles, the explicit read also updates the file position.
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//
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_Success_(return == STATUS_SUCCESS)
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_Must_inspect_result_
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_IRQL_requires_max_(PASSIVE_LEVEL)
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EXTERN_C
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NTSTATUS
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DomitoReadFile(
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_In_ HANDLE FileHandle,
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_Out_ PVOID Buffer,
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_In_ ULONG BufferSize
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);
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//
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// Gets the name of the main image of the process identified by PID.
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//
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_Success_(return == STATUS_SUCCESS)
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_Must_inspect_result_
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_IRQL_requires_max_(PASSIVE_LEVEL)
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EXTERN_C
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NTSTATUS
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DomitoGetProcessImageName(
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_In_ ULONG ProcessId,
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_Inout_ PUNICODE_STRING* ProcessImageName
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);
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