// credits @stek29 - https://github.com/stek29/electra/blob/amfid_fix/basebinaries/amfid_payload/ // from: xnu osfmk/kern/cs_blobs.h #define CS_VALID 0x0000001 /* dynamically valid */ #define CS_ADHOC 0x0000002 /* ad hoc signed */ #define CS_GET_TASK_ALLOW 0x0000004 /* has get-task-allow entitlement */ #define CS_INSTALLER 0x0000008 /* has installer entitlement */ #define CS_HARD 0x0000100 /* don't load invalid pages */ #define CS_KILL 0x0000200 /* kill process if it becomes invalid */ #define CS_CHECK_EXPIRATION 0x0000400 /* force expiration checking */ #define CS_RESTRICT 0x0000800 /* tell dyld to treat restricted */ #define CS_ENFORCEMENT 0x0001000 /* require enforcement */ #define CS_REQUIRE_LV 0x0002000 /* require library validation */ #define CS_ENTITLEMENTS_VALIDATED 0x0004000 /* code signature permits restricted entitlements */ #define CS_ALLOWED_MACHO (CS_ADHOC | CS_HARD | CS_KILL | CS_CHECK_EXPIRATION | CS_RESTRICT | CS_ENFORCEMENT | CS_REQUIRE_LV) #define CS_EXEC_SET_HARD 0x0100000 /* set CS_HARD on any exec'ed process */ #define CS_EXEC_SET_KILL 0x0200000 /* set CS_KILL on any exec'ed process */ #define CS_EXEC_SET_ENFORCEMENT 0x0400000 /* set CS_ENFORCEMENT on any exec'ed process */ #define CS_EXEC_SET_INSTALLER 0x0800000 /* set CS_INSTALLER on any exec'ed process */ #define CS_KILLED 0x1000000 /* was killed by kernel for invalidity */ #define CS_DYLD_PLATFORM 0x2000000 /* dyld used to load this is a platform binary */ #define CS_PLATFORM_BINARY 0x4000000 /* this is a platform binary */ #define CS_PLATFORM_PATH 0x8000000 /* platform binary by the fact of path (osx only) */ #define CS_DEBUGGED 0x10000000 /* process is currently or has previously been debugged and allowed to run with invalid pages */ #define CS_SIGNED 0x20000000 /* process has a signature (may have gone invalid) */ #define CS_DEV_CODE 0x40000000 /* code is dev signed, cannot be loaded into prod signed code (will go away with rdar://problem/28322552) */ #define CS_ENTITLEMENT_FLAGS (CS_GET_TASK_ALLOW | CS_INSTALLER) typedef struct __attribute__((packed)) { uint32_t magic; /* magic number (CSMAGIC_CODEDIRECTORY) */ uint32_t length; /* total length of CodeDirectory blob */ uint32_t version; /* compatibility version */ uint32_t flags; /* setup and mode flags */ uint32_t hashOffset; /* offset of hash slot element at index zero */ uint32_t identOffset; /* offset of identifier string */ uint32_t nSpecialSlots; /* number of special hash slots */ uint32_t nCodeSlots; /* number of ordinary (code) hash slots */ uint32_t codeLimit; /* limit to main image signature range */ uint8_t hashSize; /* size of each hash in bytes */ uint8_t hashType; /* type of hash (cdHashType* constants) */ uint8_t platform; /* platform identifier; zero if not platform binary */ uint8_t pageSize; /* log2(page size in bytes); 0 => infinite */ uint32_t spare2; /* unused (must be zero) */ char end_earliest[0]; /* Version 0x20100 */ uint32_t scatterOffset; /* offset of optional scatter vector */ char end_withScatter[0]; /* Version 0x20200 */ uint32_t teamOffset; /* offset of optional team identifier */ char end_withTeam[0]; /* Version 0x20300 */ uint32_t spare3; /* unused (must be zero) */ uint64_t codeLimit64; /* limit to main image signature range, 64 bits */ char end_withCodeLimit64[0]; /* Version 0x20400 */ uint64_t execSegBase; /* offset of executable segment */ uint64_t execSegLimit; /* limit of executable segment */ uint64_t execSegFlags; /* executable segment flags */ char end_withExecSeg[0]; } CS_CodeDirectory; typedef struct __attribute__((packed)) { uint32_t type; /* type of entry */ uint32_t offset; /* offset of entry */ } CS_BlobIndex; typedef struct __attribute__((packed)) { uint32_t magic; /* magic number */ uint32_t length; /* total length of SuperBlob */ uint32_t count; /* number of index entries following */ CS_BlobIndex index[]; /* (count) entries */ /* followed by Blobs in no particular order as indicated by offsets in index */ } CS_SuperBlob; typedef struct __attribute__((packed)) { uint32_t magic; /* magic number */ uint32_t length; /* total length of blob */ char data[]; } CS_GenericBlob; typedef struct __SC_Scatter { uint32_t count; // number of pages; zero for sentinel (only) uint32_t base; // first page number uint64_t targetOffset; // offset in target uint64_t spare; // reserved } SC_Scatter; /* * Magic numbers used by Code Signing */ enum { CSMAGIC_REQUIREMENT = 0xfade0c00, /* single Requirement blob */ CSMAGIC_REQUIREMENTS = 0xfade0c01, /* Requirements vector (internal requirements) */ CSMAGIC_CODEDIRECTORY = 0xfade0c02, /* CodeDirectory blob */ CSMAGIC_EMBEDDED_SIGNATURE = 0xfade0cc0, /* embedded form of signature data */ CSMAGIC_EMBEDDED_SIGNATURE_OLD = 0xfade0b02, /* XXX */ CSMAGIC_EMBEDDED_ENTITLEMENTS = 0xfade7171, /* embedded entitlements */ CSMAGIC_DETACHED_SIGNATURE = 0xfade0cc1, /* multi-arch collection of embedded signatures */ CSMAGIC_BLOBWRAPPER = 0xfade0b01, /* CMS Signature, among other things */ CS_SUPPORTSSCATTER = 0x20100, CS_SUPPORTSTEAMID = 0x20200, CS_SUPPORTSCODELIMIT64 = 0x20300, CS_SUPPORTSEXECSEG = 0x20400, CSSLOT_CODEDIRECTORY = 0, /* slot index for CodeDirectory */ CSSLOT_INFOSLOT = 1, CSSLOT_REQUIREMENTS = 2, CSSLOT_RESOURCEDIR = 3, CSSLOT_APPLICATION = 4, CSSLOT_ENTITLEMENTS = 5, CSSLOT_ALTERNATE_CODEDIRECTORIES = 0x1000, /* first alternate CodeDirectory, if any */ CSSLOT_ALTERNATE_CODEDIRECTORY_MAX = 5, /* max number of alternate CD slots */ CSSLOT_ALTERNATE_CODEDIRECTORY_LIMIT = /* one past the last */ CSSLOT_ALTERNATE_CODEDIRECTORIES + CSSLOT_ALTERNATE_CODEDIRECTORY_MAX, CSSLOT_SIGNATURESLOT = 0x10000, /* CMS Signature */ CSTYPE_INDEX_REQUIREMENTS = 0x00000002, /* compat with amfi */ CSTYPE_INDEX_ENTITLEMENTS = 0x00000005, /* compat with amfi */ CS_HASHTYPE_SHA1 = 1, CS_HASHTYPE_SHA256 = 2, CS_HASHTYPE_SHA256_TRUNCATED = 3, CS_HASHTYPE_SHA384 = 4, CS_SHA1_LEN = 20, CS_SHA256_LEN = 32, CS_SHA256_TRUNCATED_LEN = 20, CS_CDHASH_LEN = 20, /* always - larger hashes are truncated */ CS_HASH_MAX_SIZE = 48, /* max size of the hash we'll support */ /* * Currently only to support Legacy VPN plugins, * but intended to replace all the various platform code, dev code etc. bits. */ CS_SIGNER_TYPE_UNKNOWN = 0, CS_SIGNER_TYPE_LEGACYVPN = 5, }; /* * Choose among different hash algorithms. * Higher is better, 0 => don't use at all. */ static const uint32_t hashPriorities[] = { CS_HASHTYPE_SHA1, CS_HASHTYPE_SHA256_TRUNCATED, CS_HASHTYPE_SHA256, CS_HASHTYPE_SHA384, };