Lightemerald/windows-user-space-emulator
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Prepare new syscalls

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momo5502
2024-08-28 19:32:51 +02:00
parent bf8fe61697
commit c3e642c89a
2 changed files with 37 additions and 0 deletions
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36
src/windows_emulator/syscalls.cpp
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@@ -13,6 +13,7 @@ namespace
constexpr uint64_t EVENT_BIT = 1ULL << 62ULL;
constexpr uint64_t DIRECTORY_BIT = 1ULL << 61ULL;
constexpr uint64_t SYMLINK_BIT = 1ULL << 60ULL;
constexpr uint64_t SECTION_BIT = 1ULL << 59ULL;
constexpr uint64_t KNOWN_DLLS_DIRECTORY = DIRECTORY_BIT | PSEUDO_BIT | 0x1337;
constexpr uint64_t KNOWN_DLLS_SYMLINK = SYMLINK_BIT | PSEUDO_BIT | 0x1337;
@@ -328,6 +329,39 @@ namespace
return STATUS_SUCCESS;
}
NTSTATUS handle_NtOpenSection(const syscall_context& c, const emulator_object<uint64_t> section_handle,
const ACCESS_MASK /*desired_access*/,
const emulator_object<OBJECT_ATTRIBUTES> object_attributes)
{
uint32_t index = 1;
for (;; ++index)
{
if (!c.proc.sections.contains(index))
{
break;
}
}
section_handle.write(index | SECTION_BIT);
object_attributes.access([&](const OBJECT_ATTRIBUTES& attributes)
{
auto section = read_unicode_string(c.emu, attributes.ObjectName);
c.proc.sections.try_emplace(index, std::move(section));
});
return STATUS_SUCCESS;
}
NTSTATUS handle_NtMapViewOfSection(const syscall_context& c, uint64_t section_handle, uint64_t process_handle,
emulator_object<uint64_t> base_address, ULONG_PTR zero_bits, SIZE_T commit_size,
const emulator_object<LARGE_INTEGER> section_offset,
const emulator_object<SIZE_T> view_size, SECTION_INHERIT inherit_disposition,
ULONG allocation_type, ULONG win32_protect)
{
const auto desired_base = base_address.read();
return STATUS_SUCCESS;
}
NTSTATUS handle_NtCreateIoCompletion(const syscall_context& c, const emulator_object<uint64_t> event_handle,
const ACCESS_MASK desired_access, const uint64_t object_attributes,
@@ -814,6 +848,8 @@ syscall_dispatcher::syscall_dispatcher(const exported_symbols& ntdll_exports)
add_handler(NtCreateWaitCompletionPacket);
add_handler(NtCreateWorkerFactory);
add_handler(NtManageHotPatch);
add_handler(NtOpenSection);
add_handler(NtMapViewOfSection);
add_handler(NtOpenSymbolicLinkObject);
add_handler(NtQuerySymbolicLinkObject);
add_handler(NtQuerySystemInformationEx);