jitsploitation

jitsploitation iOS browser exploit for CVE-2020-9802, an old JIT bug. This is an exploit for a popular JIT compiler bug in the WebKit engine for macOS and iOS originally documented by Project Zero. I re-implemented the exploit for this bug as an exercise in learning browser exploitation. Video...

cve-2018-4233

CVE-2018-4233 Exploit for CVE-2018-4233, a bug in the JIT compiler of WebKit. Tested on Safari 11.0.3 on macOS 10.13.3. For more details see https://saelo.github.io/presentations/blackhatus18attackingclientsidejitcompilers.pdf The exploit gains arbitrary memory read/write by constructing the addr...

WebKit JIT - 'ByteCodeParser::handleIntrinsicCall' Type Confusion

/ case ArrayPushIntrinsic: ... if staticcastargumentCountIncludingThis = MINSPARSEARRAYINDEX return false; ArrayMode arrayMode = getArrayModemcurrentInstructionOPCODELENGTHopcall - 2.u.arrayProfile, Array::Write; ... This code always assumes that the current instruction is an opcall instruction...