PSFree is a WebKit exploit for PS4 Firmware 8.03.
PSFree is free software. See COPYING for the copyleft information.
Here is the source code of this program:

HTML files:
index.html
about.html
JavaScript files:

alert.mjs	GNU-AGPL-3.0-or-later	download
config.mjs	GNU-AGPL-3.0-or-later	download
run.mjs	GNU-AGPL-3.0-or-later	download
rop.mjs	GNU-AGPL-3.0-or-later	download
exploit.mjs	GNU-AGPL-3.0-or-later	download
module/chain.mjs	GNU-AGPL-3.0-or-later	download
module/int64.mjs	GNU-AGPL-3.0-or-later	download
module/constants.mjs	GNU-AGPL-3.0-or-later	download
module/memtools.mjs	GNU-AGPL-3.0-or-later	download
module/utils.mjs	GNU-AGPL-3.0-or-later	download
module/rw.mjs	GNU-AGPL-3.0-or-later	download
module/offset.mjs	GNU-AGPL-3.0-or-later	download
module/mem.mjs	GNU-AGPL-3.0-or-later	download