Anthropic-Cybersecurity-Skills/skills/implementing-memory-protection-with-dep-aslr/references/api-reference.md

API Reference: Implementing Memory Protection with DEP and ASLR

Windows PowerShell Commands

# Check system-wide mitigations
Get-ProcessMitigation -System
# Check specific process
Get-ProcessMitigation -Name chrome.exe
# Set system-wide DEP
Set-ProcessMitigation -System -Enable DEP
# Import XML policy
Set-ProcessMitigation -PolicyFilePath policy.xml
# Export current policy
Get-ProcessMitigation -RegistryConfigFilePath export.xml

Memory Protection Mechanisms

Mechanism	OS	Description
DEP/NX	Windows/Linux	Prevent code execution from data pages
ASLR	Windows/Linux	Randomize memory layout
CFG	Windows	Control Flow Guard
SEHOP	Windows	SEH Overwrite Protection
Stack Canary	Linux	Detect stack buffer overflow
PIE	Linux	Position-Independent Executable
RELRO	Linux	Read-Only Relocations
FORTIFY_SOURCE	Linux	Buffer overflow checks

Linux ASLR Check

# Check ASLR level (0=off, 1=conservative, 2=full)
cat /proc/sys/kernel/randomize_va_space
# Enable full ASLR
echo 2 > /proc/sys/kernel/randomize_va_space

ELF Binary Check (checksec)

checksec --file=/usr/bin/target
# Or with readelf
readelf -l binary | grep GNU_STACK
readelf -d binary | grep BIND_NOW

GCC Compilation Flags

Flag	Protection
-fstack-protector-strong	Stack canary
-D_FORTIFY_SOURCE=2	Buffer overflow checks
-pie -fPIE	Position-independent
-Wl,-z,relro,-z,now	Full RELRO
-Wl,-z,noexecstack	NX stack

References

• Windows Exploit Protection: https://learn.microsoft.com/en-us/microsoft-365/security/defender-endpoint/exploit-protection
• checksec: https://github.com/slimm609/checksec.sh
• ASLR: https://en.wikipedia.org/wiki/Address_space_layout_randomization