feat(pe): inspect Authenticode certificate tables (#4830)

* feat(pe): inspect Authenticode certificate tables Add inspect_pe_certificates for IMAGE_DIRECTORY_ENTRY_SECURITY WIN_CERTIFICATE entries and structurally decoded PKCS#7 signer and X.509 identity fields. The workflow reads a stable PE image without executing it or verifying signatures, chains, timestamps, or Authenticode digest coverage. * fix(pe): bound and validate certificate DER decoding - Cap decoded DER values with a shared node budget so sibling fan-out cannot exhaust memory before the PKCS#7 check - Require SignedData version, encapContentInfo and a final signerInfos SET in RFC 5652 order, and a signature OCTET STRING in each SignerInfo - Decode OBJECT IDENTIFIER arcs as unbounded base-128 values, including a multi-byte first combined arc - Decode UniversalString names as UTF-32BE and reject invalid values - Share PE header admission with the resource layout so a section table that does not fit SizeOfHeaders is rejected * docs: list PE certificates in the translated READMEs * fix(pe): cap OBJECT IDENTIFIER length and arc size A crafted type-2 certificate with a 262,144-byte contentType OID stalled decodeOid for about 20 seconds, because one arc kept growing a BigInt before the signedData check ran. decodeOid now rejects an OID longer than 256 bytes and an arc longer than 32 bytes before decoding it. Certificate OIDs, including 2.25 UUID arcs, fit under both caps. * fix(pe): reject truncated certificate tables and PKCS#7 SignedData now requires one SignerInfo with a non-empty signature and a complete issuerAndSerialNumber. Certificate names share a 64 KiB decoded-byte budget and are copied once. A security directory that ends in a short WIN_CERTIFICATE header fails instead of reporting a complete table. The certificate CLI forwards the caller abort signal into cleanup. Co-authored-by: morluto <morluto@users.noreply.github.com> * chore(ci): keep fork workflow files unchanged The certificate restack follows current main. Workflow files stay at the fork tip so this branch update does not rewrite .github/workflows. Co-authored-by: morluto <morluto@users.noreply.github.com> * fix(pe): charge serial and validity text to the decoded budget Certificate and signer serial numbers and validity times now count against the shared decoded-text budget before they are converted, so a crafted certificate cannot push megabytes of text into the hashed evidence. The budget error now names certificate text rather than only names. Restore the CI workflow to match main: the CI_TIMING_TIER input, the tier-named timing artifacts and their publication conditions, the Windows typecheck, and the path and snapshot suites in the curated Windows lane. * fix(pe): require certificate fields and preserve signer key ids Reject X.509 records that omit subjectPublicKeyInfo or signatureValue, return subjectKeyIdentifier bytes as bounded hex, and advertise an absolute path in the PE certificate input schema. Co-authored-by: morluto <morluto@users.noreply.github.com> * fix(pe): reject extra PKCS#7 wrappers and invalid UTF-8 names ContentInfo and its signedData wrapper no longer ignore trailing values, and directory strings must round-trip as UTF-8 instead of becoming U+FFFD. Co-authored-by: morluto <morluto@users.noreply.github.com> --------- Co-authored-by: Matt Van Horn <455140+mvanhorn@users.noreply.github.com> Co-authored-by: Cursor Agent <cursoragent@cursor.com> Co-authored-by: morluto <morluto@users.noreply.github.com> Co-authored-by: morluto <76467478+morluto@users.noreply.github.com>
2026-10-26 17:35:11 +00:00 · 2026-10-22 17:20:07 +08:00
1 parent 31dc035041
commit ca4ca65c5e
@@ -143,6 +143,7 @@ npx rea-agents@latest setup
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 | الملفات الثنائية للشيفرة الأصلية | شيفرة شبه برمجية، وتعليمات تجميع، وسلاسل نصية، ورموز، واستدعاءات، ومراجع                                    | Hopper أو Ghidra أو IDA؛ [تحليل الشيفرة الأصلية](../native-investigation.md)                                                   |
 | بنية ELF دون تشغيل              | الأقسام والمقاطع والرموز ومعلومات إعادة التموضع الأصلية، وآليات الحماية المحتملة المستدلّ عليها بالفحص الثابت | pwntools يوفّره المستدعي على Linux x64؛ [تشخيص الملفات الثنائية](../binary-diagnostics.md)                                     |
+| PE certificates                 | Authenticode WIN_CERTIFICATE entries and PKCS#7 signer/X.509 identity fields                               | Built-in static PE inspection; [PE certificates](../pe-certificates.md)                                                       |
 | شيفرة EVM البايتية              | محددات التوجيه، وإزاحات البايتات، والمعاملات المستنتجة، وقابلية تغيير الحالة                                | مدخل محلي يحمل بايتات خامًا أو تمثيلًا سداسيًا عشريًا على Linux x64؛ [دليل EVM دون تشغيل](../evm-bytecode.md)                      |
 | Rust binaries                   | Embedded cargo-auditable dependency list                                                                   | [Rust binaries](../rust-binaries.md)                                                                                          |
 | ELF notes                       | PT_NOTE/SHT_NOTE owners, types, GNU build-id and ABI-tag fields                                            | Built-in static ELF inspection; [ELF notes](../elf-notes.md)                                                                  |