From 7fd8d0090259f68ae85b4be53d8d74649e417d52 Mon Sep 17 00:00:00 2001 From: Joseph Goydish II Date: Tue, 11 Nov 2025 18:31:21 -0500 Subject: [PATCH] Update Remote Crypto Attack Chain .md --- Remote Crypto Attack Chain .md | 26 ++++++++++++++++++-------- 1 file changed, 18 insertions(+), 8 deletions(-) diff --git a/Remote Crypto Attack Chain .md b/Remote Crypto Attack Chain .md index 71cbe68..f15dc3e 100644 --- a/Remote Crypto Attack Chain .md +++ b/Remote Crypto Attack Chain .md @@ -61,7 +61,17 @@ A malformed MP4 file triggers memory corruption in the AAC decoder by passing an AudioConverterService ACMP4AACBaseDecoder.cpp: inMagicCookie=0x0, inMagicCookieByteSize=39 ``` -### 3. Kernel Privilege Escalation via AppleBCMWLAN (`CVE-2025-31201`) +### 3. IMTransferAgent decrypts and materializes the audio attachment + +After CoreAudio begins processing, IMTransferAgent decrypts and writes the audio file to disk for further processing... evidence that the attachment reached the local decoder and system processing pipeline. + +**Logs:** + +```plaintext +IMTransferAgent Succeeded decrypting input URL: file:///var/mobile/tmp/com.apple.messages//.../.m4a +``` + +### 4. Kernel Privilege Escalation via AppleBCMWLAN (`CVE-2025-31201`) The corrupted memory leads to malformed AMPDU status handling in the Wi-Fi driver, granting the attacker kernel execution privileges. @@ -72,19 +82,19 @@ IO80211ControllerMonitor::setAMPDUstat unhandled kAMPDUStat_ type 14 IO80211ControllerMonitor::setAMPDUstat unhandled kAMPDUStat_ type 13 ``` -### 4. Unauthorized Use of Secure Enclave Keys via CryptoTokenKit +### 5. Unauthorized Use of Secure Enclave Keys via CryptoTokenKit -With full system control, the attacker impersonates `identityservicesd` and invokes cryptographic operations using Secure Enclave–backed keys through CryptoTokenKit. - -**Logs:** +With full system control, the attacker impersonates identityservicesd and invokes cryptographic operations using Secure Enclave backed keys through CryptoTokenKit. ```plaintext +identityservicesd Decrypting message of encryption type "pair-tetra" +identityservicesd begins key management operations (sending/receiving decryption keys) +identityservicesd Query for encryption with IDs of remote/local devices CryptoTokenKit operation:2 algo:algid:sign:ECDSA:digest-X962:SHA256 -CryptoTokenKit parsed for identityservicesd +CryptoTokenKit > parsed for identityservicesd ``` -No keys are exported, but signing operations are performed without authorization — effectively bypassing cryptographic isolation. - +No keys are exported, but signing operations are performed without authorization... effectively bypassing cryptographic isolation. ---