Ghidra

The Windows registry key EnableICMPTimestampRep=0 is silently ignored by tcpip.sys — Ipv4pHandleTimestampRequest generates ICMP Type 14 replies unconditionally regardless of the registry value. Ghidra static analysis of tcpip.sys 10.0.26100.8457 reveals a second RFC 792 violation: Receive and Transmit timestamps are written in little-endian byte order while the adjacent IP Timestamp Option handler correctly calls htonl() on the same value. Confirmed via pcap, netstat ICMP counters, and WinDbg kernel breakpoints. CVE-1999-0524 scope analysis and WFP mitigation rule included.

LockBit 5.0 Linux encrypts files with ChaCha20+Curve25519 with zero network activity — the public key is embedded at compile time. strace attachment triggers immediate termination. Free space is actively wiped post-encryption to prevent carving. Full analysis pipeline: eBPF syscall tracing, Ghidra static RE of crypto routines, pcap-confirmed network behavior, and extracted IOCs including file markers, dropped ransom note paths, and encryption extension patterns.

Static analysis tools and AI-driven EDRs map malicious behavior through branching instructions — JMP, JZ, JNZ form the edges of a Control Flow Graph that heuristic engines traverse. CMOV-based CFG flattening removes all conditional branches, collapsing the graph to a single flat node sequence that defeats both signature-based and ML-based detection. Full x64 Assembly implementation: branch-free syscall obfuscation, CMOV patterns for JZ/JNZ/JLE replacement, and empirical bypass results against NGAV and Ghidra CFG analysis.