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Modify memory API implementation

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This commit is contained in:
66hh
2025-12-28 20:48:26 +08:00
parent 418c5abf49
commit 83d4cadf76
1 changed files with 37 additions and 4 deletions
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41
src/windows-emulator/syscalls/memory.cpp
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@@ -29,7 +29,9 @@ namespace syscalls
return STATUS_INVALID_PARAMETER;
}
if (info_class == MemoryBasicInformation)
// https://www.exploit-db.com/exploits/44464
// Both information classes appear to return the same output structure, MEMORY_BASIC_INFORMATION
if (info_class == MemoryBasicInformation || info_class == MemoryPrivilegedBasicInformation)
{
if (return_length)
{
@@ -290,7 +292,7 @@ namespace syscalls
const emulator_pointer buffer, const ULONG number_of_bytes_to_read,
const emulator_object<ULONG> number_of_bytes_read)
{
number_of_bytes_read.write(0);
number_of_bytes_read.try_write(0);
if (process_handle != CURRENT_PROCESS)
{
@@ -305,8 +307,39 @@ namespace syscalls
return STATUS_INVALID_ADDRESS;
}
c.emu.write_memory(buffer, memory.data(), memory.size());
number_of_bytes_read.write(number_of_bytes_to_read);
if (!c.emu.try_write_memory(buffer, memory.data(), memory.size()))
{
return STATUS_INVALID_ADDRESS;
}
number_of_bytes_read.try_write(number_of_bytes_to_read);
return STATUS_SUCCESS;
}
NTSTATUS handle_NtWriteVirtualMemory(const syscall_context& c, const handle process_handle, const emulator_pointer base_address,
const emulator_pointer buffer, const ULONG number_of_bytes_to_write,
const emulator_object<ULONG> number_of_bytes_write)
{
number_of_bytes_write.try_write(0);
if (process_handle != CURRENT_PROCESS)
{
return STATUS_NOT_SUPPORTED;
}
std::vector<uint8_t> memory{};
memory.resize(number_of_bytes_to_write);
if (!c.emu.try_read_memory(buffer, &memory, number_of_bytes_to_write))
{
return STATUS_INVALID_ADDRESS;
}
if (!c.emu.try_write_memory(base_address, memory.data(), memory.size()))
{
return STATUS_INVALID_ADDRESS;
}
number_of_bytes_write.try_write(number_of_bytes_to_write);
return STATUS_SUCCESS;
}