ELF Symbols and Relocations, a Full `readelf` Session
Toy PIE: readelf -s / -r / -d / -S in one sitting. .dynsym UND vs .symtab, JUMP_SLOT vs RELATIVE, how a stripped copy still names puts. gdb bind check.
Binary Analysis
Java XXE Data Exfiltration Paths
Lab DocumentBuilder/TransformerFactory features to disable, tiny file:// entity to a lab file, parser throws or ignores — no FTP exfil.
Swift Mangling vs ObjC methname: Recovering Names After Strip
Lab Swift class LabVault: $s… mangled names, xcrun swift demangle, nm before/after strip, the one @objc method that survives in __objc_methname. class-dump, lldb, ASAN. cryptid=1 stops the lab.
NDK .so Session: readelf, llvm-objdump -d, JNI_OnLoad
One lab APK, one arm64-v8a .so. file/readelf/llvm-objdump through JNI_OnLoad, Java_* exports, GetStringUTFChars, a 32-byte stack copy, tombstone and ASAN. Frida logs length and prefix only.
Symbolicating a Lab Crash When UIKit Lives in the dyld Shared Cache
Lab crash on a self-signed LabSession: dwarfdump -u, atos against the dSYM, why UIKit frames are not in nm of the app, crash report with [REDACTED] paths. No DSC extraction. cryptid=1 stops the lab.
Android Kernel LPE Classes, at Invariant Level, Plus a Userspace TOCTOU Lab
Futex, perf_event, and get_user-era Android kernel LPE classes as broken invariants. No kernel exploit code. A toy C file-TOCTOU analog, a planted strcpy, ASAN output.
Chrome Version Fingerprinting Notes
Lab UA / UA-CH request headers, navigator.userAgentData mock dump, nginx log_format for defenders — no exploit targeting.
AIDL Lab Service: Parcel Layout and Native onTransact
Self-built AIDL service com.lab.binder. dumpsys and logcat Binder, Parcel bytes for writeInterfaceToken + int + string, ARM64 BnEcho::onTransact. No privilege escalation.