windows - Monitoring memory addresses in Python -

-

i need know how monitor memory address , values in python. example: have game written in c. want write python script read memory address of current hitpoints , take actions based on values.

i can memory addresses cheatengine, don't know how use in python.

here's read_process function. result either bytes (2.x str), or array of ctypes structures. default read 1 byte process. optional dtype parameter must ctypes type, such ctypes.c_cint or ctypes.structure subclass. reads array of given type , length.

be careful avoid dereferencing pointer values. example, if pass dtype=c_char_p, indexing result array try dereference remote pointer in current process, crash python. in previous answer wrote read-only remotepointer class if need handle case.

ctypes definitions

import ctypes ctypes import wintypes  kernel32 = ctypes.windll('kernel32', use_last_error=true)  process_vm_read = 0x0010 size_t = ctypes.c_size_t psize_t = ctypes.pointer(size_t)  def _check_bool(result, func, args):     if not result:         raise ctypes.winerror(error)     return args  kernel32.openprocess.errcheck = _check_bool kernel32.openprocess.restype = wintypes.handle kernel32.openprocess.argtypes = (     wintypes.dword, # _in_ dwdesiredaccess     wintypes.bool,  # _in_ binherithandle     wintypes.dword) # _in_ dwprocessid  kernel32.closehandle.errcheck = _check_bool kernel32.closehandle.argtypes = (     wintypes.handle,)  kernel32.readprocessmemory.errcheck = _check_bool kernel32.readprocessmemory.argtypes = (     wintypes.handle,  # _in_  hprocess     wintypes.lpcvoid, # _in_  lpbaseaddress     wintypes.lpvoid,  # _out_ lpbuffer     size_t,           # _in_  nsize     psize_t)          # _out_ lpnumberofbytesread

read_process definition

def read_process(pid, address, length=1, dtype=ctypes.c_char):             result = (dtype * length)()             nread = size_t()     hprocess = kernel32.openprocess(process_vm_read, false, pid)     try:         kernel32.readprocessmemory(hprocess, address, result,                                     ctypes.sizeof(result),                                    ctypes.byref(nread))     finally:         kernel32.closehandle(hprocess)     if issubclass(dtype, ctypes.c_char):         return result.raw     return result

example

if __name__ == '__main__':     import os      class dtype(ctypes.structure):         _fields_ = (('x', ctypes.c_int),                     ('y', ctypes.c_double))      source = (dtype * 2)(*[(42, 3.14),                            (84, 2.72)])      pid = os.getpid()     address = ctypes.addressof(source)     sink = read_process(pid, address, 2, dtype)     din, dout in zip(source, sink):         assert din.x == dout.x         assert din.y == dout.y      size = ctypes.sizeof(source)     buf_source = ctypes.string_at(source, size)     buf_sink = read_process(pid, address, size)     assert buf_source == buf_sink

Comments

Post a Comment

Popular posts from this blog

java - Static nested class instance -

-
this question has answer here: java inner class , static nested class 23 answers i came across in java, know static nested class why create instance of 'static'. isn't whole idea of 'static' use without instance? understand concept of inner classes, why (and frankly how possible to) create 'instance' of 'static' member @ ? why this: 1- outerclass.staticnestedclass nestedobject = new outerclass.staticnestedclass(); 2- nestedobject.anestedclassmethod(); and not this: 1- outerclass outerinstance=new outerclass(); 2- outerinstance.staticnestedclass.anestedclassmethod(); use on inner classes, keyword static indicates can access inner class without instance of outer class. for example: public class outer { public static class inner { /* code here. */ } } with construction, can create instance of inn
Read more

c# - Bluetooth LE CanUpdate Characteristic property -

-
i building xamarin.forms cross platform mobile app, uses monkey.robotics bluetoth low energy functionality. connecting mbed based implimentation of custom gatt service . in xamarin c#, triggers characteristic. canupdate property in monkey.robotics? this standard example c# based on: if (characteristic.canupdate) { characteristic.valueupdated += (s, e) => { debug.writeline("characteristic.valueupdated"); device.begininvokeonmainthread( () => { updatedisplay(characteristic); }); isbusy = false; // spin until first result received }; isbusy = true; characteristic.startupdates(); } this has been working, since changed own custom gatt service connecting to, canupdate property false. property , how triggered? me debugging gatt service code. thanks monkey.robotics open sour
Read more

JavaScript - Replace variable from string in all occurrences -

-
ok, know if have character '-' , want remove in places in string javascript, ... someword = someword.replace(/-/g, ''); but, when applying array of characters, s not working ... const badchars = ('\/:*?"<>|').split(''); let filename = title.replace(/ /g, '-').tolocalelowercase(); (let item = 0; item < badchars.length; item++) { // below not work global '/ /g' filename = filename.replace(/badchars[item]/g, ''); } any ideas? /badchars[item]/g looks badchars , literally, followed i , t , e , or m . if you're trying use character badchars[item] , you'll need use regexp constructor, , you'll need escape regex-specific characters. escaping regular expression has been well-covered . using that: filename = filename.replace(new regexp(regexp.quote(badchars[item]), 'g'), ''); but , don't want that. want character class: let filename = title.replac
Read more