# um-hook - Usermode Virtual Instruction Hook Demo um-hook is a demo project/repo which contains an example of how to hook a virtual instruction and alter its results. The binaries in this repo are not packed for simplicity sake, however in later demo's I will be applying packing to the executable. #### Contents * dependencies/ - this project is dependent on `vmhook`. * refbuilds/ - binaries protected with `ultra virtualization` and no packing. These bins are for you to mess with! * src/ - source code for the usermode tracer. * vmptest/ - source code for the the test bins * um-hook/ - source code for usermode hook, includes a hook on `LCONSTBZX`. ### Usage First download the repo with `git clone --recursive https://githacks.org/vmp2/um-hook.git`, then compile the `um-hook` by opening `um-hook.sln` inside of `src/`. There should be an executable called `um-hook.exe` in `x64/Release`. This hook demo program is compiled for the first `vmptest` binary in the `refbuilds` directly. To create a trace file simply run the following: ``` um-hook.exe --bin vmptest.vmp.exe --table 0x6473 --base 0x140000000 ```