[Alexander.3]

You can show is any example with patching memory for Metamod?

I looked at all the threads in this category. I think a complete and easy way to be useful to everyone.

[Alexander.3]

Hmm.. crashing server.

PHP Code:

#include "amxxmodule.h"

#define LODWORD(l) ((DWORD)((DWORDLONG)(l))) 

void *base;
void Message();


void FN_ClientCommand(edict_t *pEntity)
{
    const char* cmd = CMD_ARGV(0);

    if (strcmp(cmd, "test")  == 0) {
        Message();
        SERVER_PRINT("testcomplete");
        RETURN_META(MRES_SUPERCEDE);
    }
    RETURN_META(MRES_IGNORED);
}  

int DispatchSpawn( edict_t *pEdict )
{
    base = GetModuleHandleA("mp.dll");
    return 0;
}

void Message()
{
    typedef void (*FN_SayMessage)(char *name, char *message);

    FN_SayMessage SayMsgs = (FN_SayMessage)((DWORD)base + 0x1623FC);
    
    SayMsgs("NewNick", "MegaMessage");
} 


[Alexander.3]

Full instructions, I sent a message

1. Step ( Searching function )
1.1
For example, I find the function "print_center"
To begin, I started looking for any message that use in "print_center", I chose "World triggered \" Round_End \ "\ n"
CTRL + F looking sub_100CFCD0


1.2
Leafing slightly up and get the body functions ( sub_10093C70 )


1.3
Searching this function ( sub_10093C70 )

int __cdecl sub_10093C70(int a1, int a2);
a1 = Arg1
a2 = Arg2

2.0 ( Creating C++ code )
Obtain real offsets
sub_10093C70 = 093C70 = 0x093C70


Full code:

PHP Code:

#include "amxxmodule.h"

void *base;
void Message(char *Message);

void FN_ClientCommand(edict_t *pEntity) {
    const char* cmd = CMD_ARGV(0);

    if (strcmp(cmd, "test")  == 0) {
        
        Message("Alexander.3 watching you");
    
        RETURN_META(MRES_SUPERCEDE);
    }
    RETURN_META(MRES_IGNORED);
}  

int DispatchSpawn( edict_t *pEdict ) {
    base = GetModuleHandleA("mp.dll");
    return 0;
}

void Message(char *Message) {
    typedef void (*FN_Msg)(int v);
    FN_Msg MessageCenter = (FN_Msg)((DWORD)base + 0x093C70);
    MessageCenter((int)Message);
} 


Screenshot:


Arg2 not used.. I wonder why is it used?

[Arkshine]

The function is : void EndRoundMessage( const char* sentence, int event );

event param is just to help to filter if message is for team, and what team.

Spoiler

#define Target_Bombed                       1
#define VIP_Escaped                         2
#define VIP_Assassinated                    3
#define Terrorists_Escaped                  4
#define CTs_PreventEscape                   5
#define Escaping_Terrorists_Neutralized     6
#define Bomb_Defused                        7
#define CTs_Win                             8
#define Terrorists_Win                      9
#define Round_Draw                          10
#define All_Hostages_Rescued                11
#define Target_Saved                        12
#define Hostages_Not_Rescued                13
#define Terrorists_Not_Escaped              14
#define VIP_Not_Escaped                     15

What you do is just retrieving function address and calling it, how it's related to this thread which is patching things in memory?

[Alexander.3]

Arkshine
Thank for event list.
as is using in my function!?
Why sends message, even if you specify a 1337 event

What you do is just retrieving function address and calling it, how it's related to this thread which is patching things in memory?

I would like it to ask you. As it is now to replace this piece of memory.
How could provide a "correct" patch that will work. For example block

[OvidiuS]

If i understand this, you have hooked main function sub_10093C70 in which World triggered \" Round_End \ is called?
You haven't patched address sub_100CFCD0 (function call) to your new function?
Anyway great for sharing this with us

[Alexander.3]

OvidiuS
function sub_10093C70 - send message in "print center"
A good example:

You haven't patched address sub_100CFCD0 (function call) to your new function?

Unfortunately I only got to send messages, and how to lock / replace ... I have no idea. =(

[Arkshine]

Hook the function...

[OvidiuS]

Thanks Alexander. I get it now

[Bos93]

Arkshine if I have hooked my function, how to block it? By using memcpy? Can you give some examples