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pluginapi: manually detect endbr64 opcodes in function hooks

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ref #4277
This commit is contained in:
Vaxry 2023-12-28 13:36:09 +01:00
parent 07132741bc
commit 6a93cee74e
1 changed files with 16 additions and 0 deletions
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16
src/plugins/HookSystem.cpp
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@ -93,6 +93,22 @@ CFunctionHook::SAssembly CFunctionHook::fixInstructionProbeRIPCalls(const SInstr
} else {
return {};
}
} else if (code.contains("invalid")) {
std::vector<uint8_t> bytes;
bytes.resize(len);
memcpy(bytes.data(), (std::byte*)currentAddress, len);
if (len == 4 && bytes[0] == 0xF3 && bytes[1] == 0x0F && bytes[2] == 0x1E && bytes[3] == 0xFA) {
// F3 0F 1E FA = endbr64, udis doesn't understand that one
assemblyBuilder += "endbr64\n";
} else {
// raise error, unknown op
std::string strBytes;
for (auto& b : bytes) {
strBytes += std::format("{:x} ", b);
}
Debug::log(ERR, "[functionhook] unknown bytes: {}", strBytes);
return {};
}
} else {
assemblyBuilder += code + "\n";
}