added some code to vm::util::flatten so that vmp3 bins can be supported

master
xerox 3 years ago
parent eed247229f
commit 14cc72c0ff

@ -1,18 +1,5 @@
--- ---
BasedOnStyle: Microsoft BasedOnStyle: Chromium
AlignAfterOpenBracket: Align
AllowAllArgumentsOnNextLine: 'true'
AllowAllParametersOfDeclarationOnNextLine: 'true'
AllowShortIfStatementsOnASingleLine: Never
BreakBeforeBraces: Allman
IndentWidth: '4'
Language: Cpp
NamespaceIndentation: All
SpacesInAngles: 'true'
SpacesInCStyleCastParentheses: 'true'
SpacesInContainerLiterals: 'true'
SpacesInParentheses: 'true'
SpacesInSquareBrackets: 'true'
UseTab: Never
... ...

@ -1,5 +1,3 @@
#include <Zydis/Zydis.h>
#include <vmprofiler.hpp> #include <vmprofiler.hpp>
namespace vm { namespace vm {

@ -29,7 +29,8 @@ bool get_fetch_operand(const zydis_routine_t &routine,
instr_data.instr.operands[1].mem.base == ZYDIS_REGISTER_RSI; instr_data.instr.operands[1].mem.base == ZYDIS_REGISTER_RSI;
}); });
if (result == routine.end()) return false; if (result == routine.end())
return false;
fetch_instr = *result; fetch_instr = *result;
return true; return true;
@ -53,7 +54,8 @@ std::optional<zydis_routine_t::iterator> get_fetch_operand(
instr_data.instr.operands[1].mem.base == ZYDIS_REGISTER_RSI; instr_data.instr.operands[1].mem.base == ZYDIS_REGISTER_RSI;
}); });
if (result == routine.end()) return {}; if (result == routine.end())
return {};
return result; return result;
} }
@ -79,8 +81,10 @@ bool is_jmp(const zydis_decoded_instr_t &instr) {
instr.mnemonic <= ZYDIS_MNEMONIC_JZ; instr.mnemonic <= ZYDIS_MNEMONIC_JZ;
} }
bool flatten(zydis_routine_t &routine, std::uintptr_t routine_addr, bool flatten(zydis_routine_t& routine,
bool keep_jmps, std::uint32_t max_instrs, std::uintptr_t routine_addr,
bool keep_jmps,
std::uint32_t max_instrs,
std::uintptr_t module_base) { std::uintptr_t module_base) {
zydis_decoded_instr_t instr; zydis_decoded_instr_t instr;
std::uint32_t instr_cnt = 0u; std::uint32_t instr_cnt = 0u;
@ -88,7 +92,8 @@ bool flatten(zydis_routine_t &routine, std::uintptr_t routine_addr,
while (ZYAN_SUCCESS(ZydisDecoderDecodeBuffer( while (ZYAN_SUCCESS(ZydisDecoderDecodeBuffer(
vm::util::g_decoder.get(), reinterpret_cast<void*>(routine_addr), 0x1000, vm::util::g_decoder.get(), reinterpret_cast<void*>(routine_addr), 0x1000,
&instr))) { &instr))) {
if (++instr_cnt > max_instrs) return false; if (++instr_cnt > max_instrs)
return false;
// detect if we have already been at this instruction... if so that means // detect if we have already been at this instruction... if so that means
// there is a loop and we are going to just return... // there is a loop and we are going to just return...
if (std::find_if(routine.begin(), routine.end(), if (std::find_if(routine.begin(), routine.end(),
@ -101,16 +106,18 @@ bool flatten(zydis_routine_t &routine, std::uintptr_t routine_addr,
raw_instr.insert(raw_instr.begin(), (u8*)routine_addr, raw_instr.insert(raw_instr.begin(), (u8*)routine_addr,
(u8*)routine_addr + instr.length); (u8*)routine_addr + instr.length);
if (is_jmp(instr)) { if (is_jmp(instr) ||
instr.mnemonic == ZYDIS_MNEMONIC_CALL &&
instr.operands[0].type != ZYDIS_OPERAND_TYPE_REGISTER) {
if (instr.operands[0].type == ZYDIS_OPERAND_TYPE_REGISTER) { if (instr.operands[0].type == ZYDIS_OPERAND_TYPE_REGISTER) {
routine.push_back({instr, raw_instr, routine_addr}); routine.push_back({instr, raw_instr, routine_addr});
return true; return true;
} }
if (keep_jmps) routine.push_back({instr, raw_instr, routine_addr}); if (keep_jmps)
routine.push_back({instr, raw_instr, routine_addr});
ZydisCalcAbsoluteAddress(&instr, &instr.operands[0], routine_addr, ZydisCalcAbsoluteAddress(&instr, &instr.operands[0], routine_addr,
&routine_addr); &routine_addr);
} else if (instr.mnemonic == ZYDIS_MNEMONIC_RET) { } else if (instr.mnemonic == ZYDIS_MNEMONIC_RET) {
routine.push_back({instr, raw_instr, routine_addr}); routine.push_back({instr, raw_instr, routine_addr});
return true; return true;

Loading…
Cancel
Save