xpcspy - Bidirectional XPC message interception and more

Features:

• Bidirectional XPC message interception.
• iOS and macOS support.
• bplist00, and the infamous bplist15 deserialization.
• Filter by message direction (incoming or outgoing) and service name.
• More to come?

Showcase

Usage: xpcspy [options] target

Options:
  --version             show program's version number and exit
  -h, --help            show this help message and exit
  -D ID, --device=ID    connect to device with the given ID
  -U, --usb             connect to USB device
  -R, --remote          connect to remote frida-server
  -H HOST, --host=HOST  connect to remote frida-server on HOST
  -f FILE, --file=FILE  spawn FILE
  -F, --attach-frontmost
                        attach to frontmost application
  -n NAME, --attach-name=NAME
                        attach to NAME
  -p PID, --attach-pid=PID
                        attach to PID
  --stdio=inherit|pipe  stdio behavior when spawning (defaults to “inherit”)
  --aux=option          set aux option when spawning, such as “uid=(int)42”
                        (supported types are: string, bool, int)
  --runtime=qjs|v8      script runtime to use
  --debug               enable the Node.js compatible script debugger
  --squelch-crash       if enabled, will not dump crash report to console
  -O FILE, --options-file=FILE
                        text file containing additional command line options
  -t FILTER, --filter=FILTER
                        Filter by message direction and service name. 'i'
                        denotes incoming and 'o' denotes outgoing. Service
                        name can include the wildcard character '*'. For
                        exmaple 'i:com.apple.*' or 'o:com.apple.apsd'.
  -r, --parse           Parse XPC dictionary keys that include `bplist` data.
                        Currently `bplist00` and `bplist16` are officially
                        supported, while `bplist15` and `bplist17` support is
                        still experimental..
  -d, --print-date      Print a current timestamp before every XPC message

Installation

pip3 install xpcspy

TODO:

• Deserialize data within the parsed bplists recursively.
• Improve script loading performance, kinda slow for some reason.
• Add an option to get the address, perhaps ASLR adjusted, for the XPC event handler, by spawning the process and hooking xpc_connection_set_event_handler.
• More pretty printing?

FAQ

• Why are you reinventing the wheel?
  • I'm not; XPoCe doesn't intercept incoming messages, and doesn't support bplist00 or bplist15. `

License

Apache License 2.0