# Voyager - A Hyper-V Hacking Framework For Windows 10 x64 (AMD & Intel)
Voyager is a project designed to offer module injection and vmexit hooking for both AMD & Intel versions of Hyper-V. This project works on all versions of Windows 10-x64 (2004-1511).
The project is currently split into two individual projects, one for Intel and another for AMD.
# Voyager 1 - Intel
Voyager 1 contains all the code associated with the Intel part of this project. Since intel has vmread/vmwrite instructions all that is needed is a simple hook on the vmexit handler
and interception can commence.
The payload solution contains a small CPUID interception example. I plan on expanding my examples to include EPT hooking and module injection/module shadowing. I also
need to locate the self referencing pml4e in hyper-v's pml4 :|....
```cpp
svm::pgs_base_struct vmexit_handler(void* unknown, svm::pguest_context context)
{
const auto vmcb = *reinterpret_cast(
*reinterpret_cast(
*reinterpret_cast(
__readgsqword(0) + offset_vmcb_base)
+ offset_vmcb_link) + offset_vmcb);
if (vmcb->exitcode == VMEXIT_CPUID && context->rcx == VMEXIT_KEY)
{
vmcb->rax = 0xC0FFEE;
vmcb->rip = vmcb->nrip;
return reinterpret_cast(__readgsqword(0));
}
return reinterpret_cast(
reinterpret_cast(&vmexit_handler) -
svm::voyager_context.vcpu_run_rva)(unknown, context);
}
```
# Voyager 2 - AMD
Voyager 2 contains all the code associated with the AMD part of this project. Since AMD has no vmread/vmwrite operation, only vmsave/vmload I had to locate
the linear virtual address of the VMCB for every version of windows. GS register contains a pointer to a structure defined by MS, this structure contains alot of stuff.
Deep in this structure is a linear virtual address to the current cores VMCB.
```
#if WINVER == 2004
#define offset_vmcb_base 0x103B0
#define offset_vmcb_link 0x198
#define offset_vmcb 0xE80
#elif WINVER == 1909
#define offset_vmcb_base 0x83B0
#define offset_vmcb_link 0x190
#define offset_vmcb 0xD00
#elif WINVER == 1903
#define offset_vmcb_base 0x83B0
#define offset_vmcb_link 0x190
#define offset_vmcb 0xD00
#elif WINVER == 1809
#define offset_vmcb_base 0x83B0
#define offset_vmcb_link 0x198
#define offset_vmcb 0xD00
#elif WINVER == 1803
#define offset_vmcb_base 0x82F0
#define offset_vmcb_link 0x168
#define offset_vmcb 0xCC0
#elif WINVER == 1709
#define offset_vmcb_base 0x82F0
#define offset_vmcb_link 0x88
#define offset_vmcb 0xC80
#elif WINVER == 1703
#define offset_vmcb_base 0x82F0
#define offset_vmcb_link 0x80
#define offset_vmcb 0xBC0
#elif WINVER == 1607
#define offset_vmcb_base 0x82F0
#define offset_vmcb_link 0x90
#define offset_vmcb 0xBC0
#elif WINVER == 1511
#define offset_vmcb_base 0x82F0
#define offset_vmcb_link 0x90
#define offset_vmcb 0xC40
#endif
```
Ill probably end up sig scanning for these offsets/resolving them at runtime when i condense this project down to a single solution.
# Versions & Support
:o: -> unknown/not tested.
:heavy_check_mark: -> tested & working.
:x: -> tested & not working.
| Winver | AMD | Intel | VM | Bare Metal |
|--------|---------|-------|----|-------|
| 2004 | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
| 1909 | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :o: |
| 1903 | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :o: |
| 1809 | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :o: |
| 1807 | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :o: |
| 1803 | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :o: |
| 1709 | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :o: |
| 1703 | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :o: |
| 1607 | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :o: |
| 1511 | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :o: |
