1. Find In Game Value At Unknown Address Cheat Engine Code
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So theres this online game that i want to play with a little help of cheat engine but my problem is that i cant find the exact address i want to change the value with. I tried everything, find exact value, unknown value etc and gave me bunch of address and so on, click on the next scan but still with abunch of address though im sure the initial value from first scan differs from next scan. The base address used for GALE01 in Cheat Engine doesn't match up to the mapped regions used in the emulation, transposing all perceived addresses by a fixed amount. Gamecube/Dolphin uses a big-endian PowerPC architecture, making the disassembler and all of its features useless (inside of the emulation, at least.). I am trying to make Python get the value/data from an address such as 0x101BFFDC, which I found by using a cheat engine for a game. I've done much research and believe that I need to use ReadProcessMemory. However, I have tried several examples without success.

Introduction:

Hey, this is my first post and in this post I’d like to show you how edit the in-game values of a game using an application called “Cheat Engine“. First of all, let me tell you what this application is all about. Cheat Engine is an open source tool which helps in modifying the attributes of a single player game, or any application. By attributes, I mean various in game variables like the amount of coins(game currency) left. Cheat engine uses a memory analyser that scans for variables within a game and thus allowing you to modify those variables.

Please note: Cheat Engine will not work on online games, since your system is connected to a real-time server.

Download:

Cheat Engine is also integrated with other useful functions such as debugger,speed hack, etc. I’ve also provided a link to this application right below:

Just click on the above link which directs you to the download page. In the download page just click on “Download Cheat Engine 6.5″(the version is likely to vary in the future). After you have downloaded the application, click on the exe file and follow the on-screen instructions to install it. Now, cheat engine is installed on your system.

How to use:

Friday the 13th game cp cheat engine. Now that you’ve installed cheat engine on your system all that is left to do is to use it.

I am going to demonstrate the working of Cheat Engine on the game NFS MW. So, let’s get to it.

Requirements:

1. Cheat Engine.
2. The game you want to edit.

In this game(NFS MW), the game attribute I’ll be modifying is known as “Skill Points”. It can be earned throughout the game, and I’ll show you a quick way of modifying it.

Just follow the steps to get it done. For almost every step, I’ve included an image that makes your job a lot more easier.

STEP 1:

The first step is to open up the game and view the current value of skill points available. It’s better if you make note of it. My current value of skill points is 401,100.

STEP 2:

Minimize the game and open up Cheat Engine. The window should appear like this:

Then, click on the flashing computer icon, that has been marked in the image. This opens up the “process list”, which shows all the processes running on the system. From the list, select the one you intend to change(in this case, it is NFS MW), and select “Open”.

STEP 3:

Once the process is opened, type in the value of the skill points in the “value” text box. Then, click the “first scan” button.

You’ll see that a range of values appears on the left pane. But, to do the trick, you’ll need to cut short the size of the list. To do that go back to the game and gain some skill points by giving cops a chase (the easiest way). The result obtained after clicking the first scan button is shown below.

STEP 4:

Now, make sure that you’ve modified the value of Skill Points from within the game. I’ve attached an image below for your reference.

The new value of Skill Points is 401,850. All you have to do now is to enter the new value of the skill points into the “value” text box and click the next scan button.

You’ll find that the list has been cut down in size. I personally recommend the size of the list to be not more than 5. If the list size is still big (only happens rarely), repeat the process again. Take a look at the image below for more details.

STEP 5:

Now, select all the values from the left side and click on the red arrow that faces downwards. On doing that the values get placed on the white space below.

STEP 6:

Alright, the job is almost done. All you are gonna have to do now, is to select all the values from the white space and double click on any one of the values under the “value” tab. On doing so, a small menu named “Change value” appears. In the text box that you see, type in the new value of skill points you want to set. I have set the value to 700,000. Select “OK”. The image below shows it.

NOTE 1: You can set almost any value but do not go crazy about it, since every variable type has it’s own maximum range. Entering values beyond that range may make the application go haywire.

That’s it, you are done. To check if this trick has really worked, get back into the game. You will see that the value has changed. Take a look at the image below for more reference.

As you can see it in the image, the value of skill points has changed. So that’s it guys this is how you edit the in-game parameters using Cheat Engine.

NOTE 2: Sometimes it is possible that the value remains the same. It doesn’t mean that the value has not been changed, but the value has not been updated in the game. To do so just refresh the game or simply restart it. I’m sure this will do the trick.

I would like to remind you again that Cheat Engine does not work on online games, so don’t even think of using it for online games .

All the credit goes to the developer of Cheat Engine.

So, that’s all guys. Thank you for taking your time and reading my blog, hope it helps you.

HAVE A NICE DAY, THANK YOU.

Welcome to the guide on Windows Game Hacking With Gidra And Code Vein Cheat Engine. I will discuss some tactic with the help of code vein cheat engine.

Let’s have a look at some windows game hacking by revisiting Pwn Adventure 3 – the game that was made to teach game developers about what can go wrong. We have solved all available challenges already on Linux. I didn’t do the hacks on Windows because I only have a basic knowledge about it.

For example, I know about DLL injection, tools like Code Vein Cheat Engine and some of the Windows API, but that’s about it. And especially the tooling and the process is very different on Windows and Linux.

But because Linux and Windows run on the same PC architecture, we have of course some similarities. I know how C and C++ programs work. I know about memory and pointers. I can read assembly.

I understand structs and classes in memory. But once you get into other process details like DLLs, shared libraries, the heap, threads, and so forth, it gets very different. So given my Linux experience I will have a good foundation, but I will also have to learn a lot.

Also one side note, a lot of people scoff at Windows and Windows users when it comes to hacking. “Real hackers use Arch Linux”. But in reality, the game hacking community,has created some incredible debugging and analysis tools for windows. Going really deep.

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I’m not sure, but I would lean so far out of the window (heh, pun) to say, that the tooling on Windows for analyzing software or in particular games, especially software without source code, is much more advanced than on Linux. And I think a tool that immediately jumps to mind is Code Vein Cheat Engine.

So let’s check it out I remember playing around with Code Vein Cheat Engine when I was a teenager and didn’t understand a thing about memory, assembly and other lower level stuff about programs. But already then it felt intuitive and logical to use. At least the basics.

I think that just shows how great of a too lit is. So what is it? This is Code Vein Cheat Engine. The basic idea of this tool is to find the address of certain values in the game’s memory. And you do this by repeatedly eliminating,or separating, or sorting out values.

To do this Code Vein Cheat Engine offers various Scan Types and Value Types. At the top you can see that I have attached to this button to the Pwn Adventure process.

Also Read: What Is AR Zone App

What Code Vein Cheat Engine?

So Code Vein Cheat Engine searches through the game’s process memory. Let’s try it out. Let’s take the health, which right now is at 100. We search the value 100. We assume health is stored as a 4 byte value. First Scan. But we find thousands of values.

However, you can already see a few values now updated. This is the current value in memory, and this is what it was when the search was done. So with the next scan we can filter, or search, on those results and we could just search again for 100, or we could say that the value has not changed.

No difference in this case, just wanted to show a different scan type. And we sort out a few memory locations, but we are still at over 9000! Mhmh… we can also go into the game and move and jump around hoping that that could affect any of those values.

Nothing directly visible here, but when were do the scan we are now in the 8000s. So it helped. But you see, it will be tough to find now the right health value. So that’s why you want a value that you can somehow affect.

Why Code Vein Cheat Engine Is Such A Great Tool

You could affect the health by taking damage,but unfortunately we are just at the start of the game, so we can’t do this right now. Instead let’s look for something else. Let’s start over and do a new scan. I want to find the address in memory that stores the current selected skill or weapon. 1,2,3,4,5,6,7,8,9 or 0.

We have selected 1, and we could now search for the value 1. But if you have experience with programming and you imagine this to be an array, we actually don’t not know if this is stored as a 1or maybe as an array index of 0. And if you think this further, it could also be a linked list, which would mean the current selected skill could also be a pointer, just pointing to that object that represents that skill in memory.

So it’s perfectly valid to make an assumption that it is 1, and then start searching like that. And maybe that works or you restart and try0. But you could also try to go with an unknown initial value. First scan. It takes a bit. Because it now indexed over 168 MILLION addresses.

This is what Code Vein Cheat Engine makes such a great tool. It’s not difficult to read a process’s memory. We do that on linux with GDB all the time. Examining memory. And of course we could write scripts or tools to automate such a search.

But the software engineering along the algorithm-,and memory-, optimization to make this as efficient and usable as Code Vein Cheat Engine does it, is not trivial. That’s why this is an awesome tool. Anyway, let’s continue.

So we haven’t changed the selected skill yet, but we move around a bit, and so we can now filter out ALL the dynamic memory values by searching for unchanged value. of… still 167 million. That didn’t help much… But that makes sense.

We searched for an unkown value and then filtered for all the unchanged valkues. And all the assembly code of the binaries,the pwn adventure binary, all the loaded dlls, all the loaded resources and 3D objects are all unchanged data in memory, right?

So we want to get rid of those. Which means we should somehow change and affect the skill selection by switching the skill around. Ok we clearly changed the value now and we can search for a changed value.

Ok we clearly changed the value now and we can search for a changed value. BOOM! From 167 million down to 291 thousand. And you can already see some red colored valuesthat updated and changed. So let’s quickly scan for unchanged values. Down to 229 thousand.

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Just repeat the same search a bit. Down to 203 thousand. Let’s walk around a bit and pay attention to the values. As soon as we moved, those all changed! But we didn’t change the skill.

So now we can filter again for unchanged values. 100k left. Now switching some skills. Moving around. But back to skill 2. So it’s unchanged. Doesn’t help much. Well, let’s change it again and select skill3 and search for a changed value. WOW! Down to 262.

WE could now almost look through that by hand. We changed to the second skill and immediately those values updated here. Going back to 3, it’s 0. So it seems to be directly affected by the selected skill.

However going to the 5th skill, we notice the value stays 0, like when we had skill 3 selected. Which means we should search now for changed values. Down ti 94. Let’s keep doing that, switch to skill 6. Changed value scan. Down to 10! Skill 7, scan for changed value. Skill 8. Changed value. Skill 1, change value.

But looks like nothing happens anymore. And there it is! So switching the skill we can see the numbers update. And the idea to imagine this value we look for to be an array index seems true! Because skill 1 is a zero. Skill 2 is a 1. And so forth.

The other value here I’m not sure. It doesn’t look like a pointer, because a pointer should move by the pointer size. On 32bit it should move by 4 bytes, so +4. But it’s also always just +1. So no clue. But whatever. We can also now add this address to the address list here.

So at this address in memory, we have apparently the value stored that indicates the selected skill. This went pretty well. But sometimes when you search for values, the same value shows up in multiple places in memory and they could just be updated, but are not the real source variable.

But when we change it, we see that the game also updates the selected skill. This means that this is the real root value. Beyond this Code Vein Cheat Engine offers a lot of other interesting tools to explore this further. For example “we can find out what writes to this address”.

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Now let’s go to the game and once we change the skill, we see an entry in our list appearing, counting how often this instruction was executed and wrote this address. So this move instruction moved a value from edx into the memory referenced by ESI + hex 0x180.

Here we can also see a few of the surrounding assembler code and here the register values. We said EDX is the value that is written,so it in this case it was the number 1. And ESI is an address. And the value was written at the offset hex0x180.

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Now I’m not a 100% sure if this is the case here, but most likely this means that ESI is the pointer to some object in memory. Maybe the player class. And this player object might have a variable to indicate the current selected skill, and it is at offset 0x180. Assembly is hard coded fixed data, right? So that can tell you a lot.

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For example we could imagine this to be a function in C++ like, set_selected_skill, and it takes a number, and assigns it to the player’s member variable. The compiler of course knows how the Player object looks like.

It knows that at offset 0x180 is the player’s selected skill. So it simply compiles a move based on the players object start address. Does that make sense? And you can explore this assumption by looking at the memory. We can see here Code Vein Cheat Engine’s Memory View.

We go to the address of ESI, and so here it is. And now look at what comes after that start address. We see my player name and my team name. Live Overflow and PwnSquad. We can apparently also see the location we are at. Lost Cave.

We can also see here a value that seems to rapidly count up. So this could be a timer of some sorts. The other highlighted value here is the address we have stored in our address list. So this is the selected skill. We can see it change when we change it in game. But we don’t see anything update when we look around or walk around.

So the player’s position doesn’t seem to be stored right there. We can also look at the Memory Regions to find out where the code that accessed this memory belongs to. It started with hex 0x618…. Harvest goddess game cheat. Something. And there are a lot of memory regions for a game. But here it is.

GameLogic.dll

It seems to belong to the GameLogic.dll. And if you have watched my Pwn Adventure series on linux, you know that the Game Logic is a very important part for the game. You can also use this information to kickstart static analysis.

Let’s try to find this function that wrote the skill number in a disassembler. Here I have loaded the GameLogic.dll into Ghidra. The free reverse engineering tool from the NSA. And when loaded it loads the dll at a certain address.

So we can’t simply go to the address that Code Vein Cheat Engine told us. Because of ASLR on windows, the dll was loaded somewhere else in memory. But we saw which address in the memory view of Cheat Engine. Here is the Memory Map as shown by Ghidra. And with this house symbol, representing the BASE, you can actually move the whole dll around.

So we can now enter the real base address in memory, and Ghidra will relocate the binary. And now compare the memory map of Ghidra to the real process memory map. You can see how all the sections of the .dll where really loaded into the memory of the game. Anyway.

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Now we can be lazy and simply go to the address Code Vein Cheat Engine told us. So here it is! I deliberately renamed the GameLogic.dll to game.dll, just because the Pwn Adventure game shipped with debug symbols in the .pdb file.

This way we can have more the experience of reverse engineering a closed source game without symbols. So here is the function. Ghidra also comes with a decompiler so you can see here that this line writes the skill number.

So like I said, there is a good chance that ESI was somehow the pointer to some kind of Player object. So we could just assume that iVar1 is a player object. iVar1 + 0x180 is the selected skill. And so we can also ask Ghidra to automatically generate a structure – a struct. Like in C. Basically, automatically create a class.

Now of course ghidra doesn’t know how this class looks like, but based on the decompilation it can assume that this offset 0x180 was actually a variable inside that Player struct. So you see the code changed from this addition,to accessing a member variable of Player. And then we can rename that field, and fore xample call it skilled or item Slot.

This is cool right? I have to make it clear. I’m not 100% sure that this is really a player object, and I don’t know how really that variable is called. These are just assumptions based on the evidence we have collected.

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But in the process of reverse engineering, we might also invalidate this assumption because we learned even more details. Doesn’t this almost feel like investigating a crime scene or doing science. And you need quite a bit of creativity too.

You try to come up with a good idea to collect data and evidence and you come up with assumptions, that are for example based on your programming experience, and create a mental model, and then you collect more data that either confirms your assumptions or you adjust your model. And you keep repeating that.

Final Words On Windows Game Hacking With Gidra And Code Vein Cheat Engine

You can see that some people can find this to be really fun. Like a puzzle or a point and click adventure game. But this is basically how reverse engineering of a game or some program can look like.

Even Code Vein Cheat Engine officially says don’t ask about hacking online games (and typically they have anti debugging and detections in place that stop this easily anyway). There are of course always tricks to get around stuff, but don’t bother asking people about that.

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If you play around with that alone, fine. With enough experience you can do that yourself. But selling hacks are shitty. And don’t ask for online game hacks. You can have enough fun and learn enough with normal, non-online games. Or stuff like Pwn Adventure. And 2nd.

Like I said I explored these tools when I was a teenager and eager to learn. And I found these games, hacking forums. But they were full of entitled pricks and elitists who didn’t want to share anything.