While these methods provide partial coverage, none offers a that simultaneously tackles process, syscall, and hardware‑based ADB checks. 2.3 Gap Analysis | Gap | Why it matters | |-----|----------------| | Cross‑Architecture Support | Modern malware targets ARM64 devices (IoT, smartphones). | | Low Performance Overhead | High‑overhead DBI defeats real‑time debugging scenarios. | | Stealth against Hybrid Checks | Timing‑based heuristics can detect DBI or kernel hooks. | | Ease of Deployment | Analysts often lack root privileges; requiring LKM is impractical. |
# Install privileged helper (set‑uid root) sudo cp src/gdbypass-ctl /usr/local/sbin/ sudo chmod u+s /usr/local/sbin/gdbypass-ctl gdbypass
| Category | Representative Techniques | |----------|----------------------------| | | ptrace checks, prctl(PR_SET_DUMPABLE) , /proc inspection | | System‑Call Based | syscall return‑value tampering, seccomp filters, ptrace ‑based syscall interposition | | Hardware‑Based | Manipulation of debug registers (DR0‑DR7), MSR checks ( IA32_DEBUGCTL ), CPU performance counters | | Hybrid / Timing | rdtsc / clock_gettime comparisons before/after suspicious calls, instruction‑level timing differences | While these methods provide partial coverage, none offers