Acelogic
1510d8c6ce
An EL2 monitor/hypervisor and toolchain that boots macOS 27 on the ASUS A16 (Snapdragon X2 Elite), with an Adreno Metal plug-in and IOGPU kext, and air2ir3, an AIR to Mesa ir3 shader compiler. MIT, with GPL-2.0 components listed in LICENSE and THIRD_PARTY_NOTICES.md. No Apple, Qualcomm, ASUS or Microsoft binaries are included.
37 lines
1.7 KiB
Python
Executable File
37 lines
1.7 KiB
Python
Executable File
#!/usr/bin/env python3
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# SPDX-License-Identifier: MIT
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"""SHA-256 of every section's file bytes in a 64-bit Mach-O (zerofill sections by size only), and of the dyld fixup /
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symbol tables' non-debug content is left out: what a kext runs, not where its objects were built.
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Usage: macho-sections.py BINARY [BINARY2] (two: print only the sections that differ)."""
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import hashlib, struct, sys
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def sections(path):
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data = open(path, 'rb').read()
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magic, _, _, _, ncmds, _, _, _ = struct.unpack_from('<IiiIIIII', data, 0)
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assert magic == 0xfeedfacf, 'not a 64-bit Mach-O'
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off, out = 32, {}
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for _ in range(ncmds):
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cmd, size = struct.unpack_from('<II', data, off)
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if cmd == 0x19: # LC_SEGMENT_64
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nsects = struct.unpack_from('<I', data, off + 64)[0]
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s = off + 72
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for _ in range(nsects):
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sect, seg = (x.rstrip(b'\0').decode() for x in struct.unpack_from('<16s16s', data, s))
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addr, sz, fo = struct.unpack_from('<QQI', data, s + 32)
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flags = struct.unpack_from('<I', data, s + 64)[0]
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zerofill = (flags & 0xff) in (0x1, 0xc, 0x12)
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body = b'' if zerofill else data[fo:fo + sz]
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out[f'{seg},{sect}'] = f'{addr:#x} {sz:#x} ' + hashlib.sha256(body).hexdigest()[:16]
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s += 80
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off += size
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return out
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a = sections(sys.argv[1])
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if len(sys.argv) == 2:
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for k, v in a.items(): print(f'{k:28} {v}')
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else:
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b = sections(sys.argv[2])
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diff = [k for k in sorted(set(a) | set(b)) if a.get(k) != b.get(k)]
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for k in diff: print(f'{k:28} {a.get(k)} | {b.get(k)}')
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print(f'{len(set(a) | set(b)) - len(diff)} of {len(set(a) | set(b))} sections identical')
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