printing debug info and still making vmprofiler, also updated vmprofiler

dep...
main
John Doe 11 months ago
parent 8f038fe31e
commit 99f00be5d3

1
.gitignore vendored

@ -10,6 +10,7 @@
*.userosscache
*.sln.docstates
*.o
*.exe
# User-specific files (MonoDevelop/Xamarin Studio)
*.userprefs

2
deps/vmprofiler vendored

@ -1 +1 @@
Subproject commit 79c369582866ed888741b283bd6dca6677bf3a9d
Subproject commit eb91191526dc63f9c972ad7d9c1f03be36dc2e51

@ -141,21 +141,55 @@ bool emu_t::code_exec_callback(uc_engine* uc,
if (instr.mnemonic == ZYDIS_MNEMONIC_INVALID)
return false;
// save the current cpu's context (all register values and such)...
// create a new emu_instr_t with this information... this info will be used by
// profiles to grab decrypted values and such...
uc_context* cpu_ctx;
uc_context_alloc(obj->uc, &cpu_ctx);
vm::instrs::emu_instr_t emu_instr{instr, cpu_ctx};
obj->cc_trace->m_instrs.push_back(emu_instr);
// RET or JMP REG means the end of a vm handler...
if (instr.mnemonic == ZYDIS_MNEMONIC_RET ||
(instr.mnemonic == ZYDIS_MNEMONIC_JMP &&
instr.operands[0].type == ZYDIS_OPERAND_TYPE_REGISTER)) {
// deobfuscate the instruction stream before profiling...
// makes it easier for profiles to be correct...
vm::instrs::deobfuscate(*obj->cc_trace);
// find the last MOV REG, DWORD PTR [VIP] in the instruction stream, then
// remove any instructions from this instruction to the JMP/RET...
const auto rva_fetch = std::find_if(
obj->cc_trace->m_instrs.rbegin(), obj->cc_trace->m_instrs.rend(),
[&vip = obj->vip](const vm::instrs::emu_instr_t& instr) -> bool {
const auto& i = instr.m_instr;
return i.mnemonic == ZYDIS_MNEMONIC_MOV &&
i.operands[0].type == ZYDIS_OPERAND_TYPE_REGISTER &&
i.operands[1].type == ZYDIS_OPERAND_TYPE_MEMORY &&
i.operands[1].mem.base == vip && i.operands[1].size == 32;
});
if (rva_fetch != obj->cc_trace->m_instrs.rend())
obj->cc_trace->m_instrs.erase((rva_fetch + 1).base(),
obj->cc_trace->m_instrs.end());
const auto vinstr =
vm::instrs::determine(obj->vip, obj->vsp, *obj->cc_trace);
if (vinstr.mnemonic != vm::instrs::mnemonic_t::unknown) {
if (vinstr.mnemonic == vm::instrs::mnemonic_t::unknown) {
zydis_rtn_t inst_stream;
std::for_each(obj->cc_trace->m_instrs.begin(),
obj->cc_trace->m_instrs.end(),
[&](vm::instrs::emu_instr_t& instr) {
inst_stream.push_back({instr.m_instr});
});
vm::utils::print(inst_stream);
std::printf("========\n");
std::getchar();
} else {
std::printf("> %s\n",
vm::instrs::get_profile(vinstr.mnemonic)->name.c_str());
std::getchar();
}
if (vinstr.mnemonic == vm::instrs::mnemonic_t::jmp) {

Loading…
Cancel
Save