Cheat Engine

kitesan · Posted: Thu Feb 19, 2015 2:08 pm Post subject: Module inject

how to inject a module with a lua script?

atom0s · Posted: Thu Feb 19, 2015 3:04 pm Post subject:

kitesan · Posted: Sat Feb 21, 2015 8:06 am Post subject:

actually i wanted to inject a exe (its module) into a process (to duplicate the original exe module). in short a exe injector coded in c vb or lua

SteveAndrew · Posted: Sat Feb 21, 2015 4:46 pm Post subject:

Umm... what? lol you can't inject an exe into an exe! You're going to have to clarify what you mean or what you're trying to do, as their probably is a way to do what you want, but it's probably not how you're thinking it'll work.

kitesan · Posted: Sat Feb 21, 2015 6:49 pm Post subject:

i have to make a copy of the main module of Far Cry 4 and inject the copy in the game so i have the same module two times

SteveAndrew · Posted: Sat Feb 21, 2015 7:09 pm Post subject:

Oh okay see that makes more sense now. What you need to do is not inject a second game into the first, but instead make a copy of the entire region of memory the game takes up. This is to bypass a CRC check or something right?

Either save the memory region with CE and use the loadbinary function of Auto Assembler or Lua, or create a copy of the memory "on-the-fly" with AA or Lua (obviously executed before enabling any cheats)

Then your script to bypass the crc will point the check to your copy of the memory instead of the original.

Razz

kitesan · Posted: Sat Feb 21, 2015 9:03 pm Post subject:

thank alot

kitesan · Posted: Sun Feb 22, 2015 5:32 am Post subject:

little question , functions like VirtualAlloc and VirtualAllocEx can be used in 64bit applications and how to ?

SteveAndrew · Posted: Mon Feb 23, 2015 10:21 am Post subject:

You compile as 64-bit and it just works Very Happy

Or in ASM You pass the parameters/arguments via registers+stack instead of just the stack. If you're doing a Lua or AA script though it can allocate memory for you more easily with 'alloc(memorycopy,123456)' where '123456' is the size in bytes, or Lua: 'allocateSharedMemory(name, size)'

I'd recommend just allocating it that way, but if you insist on calling VirtualAlloc instead of using CE's features:

"Integer values are passed (in order left to right) in RCX, RDX, R8, and R9. Arguments five and higher are passed on the stack. All arguments are right-justified in registers. This is done so the callee can ignore the upper bits of the register if need be and can access only the portion of the register necessary.
Floating-point and double-precision arguments are passed in XMM0 – XMM3 (up to 4) with the integer slot (RCX, RDX, R8, and R9) that would normally be used for that cardinal slot being ignored (see example) and vice versa."
Parameter Passing: https://msdn.microsoft.com/en-us/library/zthk2dkh.aspx
x64 Calling Convention: https://msdn.microsoft.com/en-us/library/ms235286.aspx

So something like:

kitesan · Posted: Mon Feb 23, 2015 10:50 am Post subject:

I don't know how to thank you enough

kitesan · Posted: Mon Feb 23, 2015 6:50 pm Post subject:

last question , once you make a copy of the memory , how do you link the file of your copy (.CEM) to your table when you use for example Loadbinary(Copy, Copy.CEM)? and how to get as return point the address of that region?
very last question , how to give the process handle to allocateSharedMemory(name, size)?

SteveAndrew · Posted: Tue Feb 24, 2015 7:11 am Post subject:

kitesan · Posted: Tue Feb 24, 2015 9:55 am Post subject:

You are an angel.