MK11 VR Hasher

Code to hash MK11's data in order to properly send requests to the api endpoints. VR Hash check is introduced on 15th of September 2020.

Usage

1. You need to use the provided Cheat Table in order to obtain the 4 IV values from the game. Should Enable the script while the game is loading but before you "Press Start".

2. Get the IV Values and the string you want to hash.

   Usage Command is

   vr-hasher IV1 IV2 IV3 IV4 String_To_Hash

Notes

I'm retrieving the 4 IVs after they're being calculated from 1 initial IV. This is because the 4 IVs are in the registers at a specific point during execution, which is less prone to change during updates than trying to retrieve from the stack. (mov $data, RAX is less prone to update than mov RAX, [ESP+20]). The point of obtaining the code uses AOB scan over a function that theoritically doesn't change, so it should work across new updates as well. Finally, the address of this pointer that stores the IV struct is 0x143176620 as of Sep-15-2020. IV Struct is at addr+0x1390, which translates to 0x1431779B0. The initial (seed?) value is at IV Struct + 0x20 which is used to create the other 3 values, and the remaining the 3 IV values are at RSP+0x70 RSP+0x88, R11.

Memory Snapshot after IV calculation:

RAX 8080808080808081
RBX 1
RCX Not Needed
RDX IV
RBP len(TS_String)
RSP Not Needed
RSI CCCCCCCCCCCCCCCD
RDI 2492492492492493
R8  FFFFFFFF
R9  IV
R10 IV2
R11 IV
R12 loop ctr
R13 TS_STRING DAY_HOUR:MINUTE:SEC_IDslug
R14 AAAAAAAAAAAAAAAB
R15 loop ctr
RSP+70 IV3
rsp+88 IV4
rsp+20 IV2