added nop vm handler

main
_xeroxz 3 years ago
parent b88c7b9321
commit 1b2b79e3e9

@ -60,6 +60,7 @@ list(APPEND vmprofiler_SOURCES
"src/vmprofiles/lreg.cpp"
"src/vmprofiles/lvsp.cpp"
"src/vmprofiles/nand.cpp"
"src/vmprofiles/nop.cpp"
"src/vmprofiles/nor.cpp"
"src/vmprofiles/read.cpp"
"src/vmprofiles/shr.cpp"

@ -20,6 +20,7 @@ enum class mnemonic_t {
mul,
imul,
nand,
nop,
nor,
read,
write,
@ -143,6 +144,11 @@ struct vblk_t {
zydis_reg_t vip;
zydis_reg_t vsp;
} m_vm;
/// <summary>
/// first instruction of the virtual jmp handler...
/// </summary>
std::uintptr_t rip;
} m_jmp;
/// <summary>
@ -208,6 +214,11 @@ struct hndlr_trace_t {
/// </summary>
std::uint8_t* m_stack;
/// <summary>
/// rip at the beginning of the trace...
/// </summary>
std::uintptr_t m_begin;
/// <summary>
/// native register used for virtual instruction pointer...
/// </summary>
@ -279,6 +290,7 @@ extern profiler_t add;
extern profiler_t lvsp;
extern profiler_t svsp;
extern profiler_t nand;
extern profiler_t nop;
extern profiler_t nor;
extern profiler_t read;
extern profiler_t write;
@ -290,8 +302,8 @@ extern profiler_t vmexit;
/// unsorted vector of profiles... they get sorted once at runtime...
/// </summary>
inline std::vector<profiler_t*> profiles = {
&vmexit, &shr, &imul, &nor, &write, &svsp, &read,
&nand, &lvsp, &add, &jmp, &sreg, &lreg, &lconst};
&vmexit, &shr, &imul, &nor, &write, &svsp, &read, &nand,
&lvsp, &add, &jmp, &sreg, &lreg, &lconst, &nop};
/// <summary>
/// no i did not make this by hand, you cannot clown upon me!

@ -0,0 +1,25 @@
#include <vminstrs.hpp>
namespace vm::instrs {
profiler_t nop = {
"NOP",
mnemonic_t::nop,
{{// LEA REG, [0x0] ; disp is -7...
[&](const zydis_reg_t vip,
const zydis_reg_t vsp,
const zydis_decoded_instr_t& instr) -> bool {
return instr.mnemonic == ZYDIS_MNEMONIC_LEA &&
instr.operands[0].type == ZYDIS_OPERAND_TYPE_REGISTER &&
instr.operands[1].type == ZYDIS_OPERAND_TYPE_MEMORY &&
instr.operands[1].mem.disp.has_displacement &&
instr.operands[1].mem.disp.value == -7;
}}},
[&](zydis_reg_t& vip,
zydis_reg_t& vsp,
hndlr_trace_t& hndlr) -> std::optional<vinstr_t> {
vinstr_t res;
res.mnemonic = mnemonic_t::nop;
res.imm.has_imm = false;
return res;
}};
}
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