Function at 0x18f52
Capabilities:
Get file attributes
Read file on windows
Set file attributes
Write file on windows

Disassembly:
mov edi, edi
push ebp
mov ebp, esp
sub esp, 0x7c
push esi
push 0x20000
call fcn.000153de
xor esi, esi
mov dword [ebp - 8], eax
cmp eax, esi
jne 0x18f78
mov eax, 0xc000009a
jmp 0x19162
push ebx
push edi
push 0x40
pop eax
mov ecx, dword [ebp + 8]
mov edi, dword [sym.imp.ntoskrnl.exe_ZwCreateFile]
push esi
push esi
push eax
push 1
push 1
lea ebx, [eax + 0x40]
push ebx
mov dword [ebp - 0x30], eax
push esi
lea eax, [ebp - 0x14]
push eax
lea eax, [ebp - 0x3c]
push eax
push 0x80000000
lea eax, [ebp - 4]
push eax
mov dword [ebp - 0x3c], 0x18
mov dword [ebp - 0x38], esi
mov dword [ebp - 0x34], ecx
mov dword [ebp - 0x2c], esi
mov dword [ebp - 0x28], esi
call edi
cmp eax, esi
mov dword [ebp + 8], eax
jge 0x18fcf
push dword [ebp - 8]
call fcn.000153f8
jmp 0x1915d
push 0x40
pop eax
mov ecx, dword [ebp + 0xc]
push esi
push esi
push eax
push 5
push 3
push ebx
mov dword [ebp - 0x30], eax
push esi
lea eax, [ebp - 0x14]
push eax
lea eax, [ebp - 0x3c]
push eax
push 0xc0000000
lea eax, [ebp - 0xc]
push eax
mov dword [ebp - 0x3c], 0x18
mov dword [ebp - 0x38], esi
mov dword [ebp - 0x34], ecx
mov dword [ebp - 0x2c], esi
mov dword [ebp - 0x28], esi
call edi
mov edi, eax
cmp edi, esi
jge 0x19025
push dword [ebp - 8]
add byte [eax], al
pop edx
cmp bh, 0xff
jne 0x19014
invalid
call dword [sym.imp.ntoskrnl.exe_ZwClose]
mov eax, edi
jmp 0x19160
push 5
push 0x18
lea eax, [ebp - 0x54]
push eax
lea eax, [ebp - 0x14]
push eax
push dword [ebp - 4]
call dword [sym.imp.ntoskrnl.exe_ZwQueryInformationFile]
mov edi, dword [sym.imp.ntoskrnl.exe_ZwWaitForSingleObject]
push esi
push 1
push dword [ebp - 4]
mov dword [ebp + 8], eax
call edi
cmp dword [ebp - 0x14], esi
jl 0x19167
mov eax, dword [ebp - 0x4c]
mov ecx, dword [ebp - 0x48]
mov dword [ebp - 0x1c], eax
or eax, ecx
mov dword [ebp - 0x24], esi
mov dword [ebp - 0x20], esi
mov dword [ebp - 0x18], ecx
je 0x190fe
mov ebx, 0x20000
push ebx
push esi
push dword [ebp - 8]
call sub.ntoskrnl.exe_memset
add esp, 0xc
cmp dword [ebp - 0x18], esi
jg 0x1908f
jl 0x1908c
cmp dword [ebp - 0x1c], ebx
jae 0x1908f
mov ebx, dword [ebp - 0x1c]
push esi
lea eax, [ebp - 0x24]
push eax
push ebx
push dword [ebp - 8]
lea eax, [ebp - 0x14]
push eax
push esi
push esi
push esi
push dword [ebp - 4]
call dword [sym.imp.ntoskrnl.exe_ZwReadFile]
push esi
push 1
push dword [ebp - 4]
call edi
cmp dword [ebp - 0x14], esi
jl 0x19167
push esi
lea eax, [ebp - 0x24]
push eax
push ebx
push dword [ebp - 8]
lea eax, [ebp - 0x14]
push eax
push esi
push esi
push esi
push dword [ebp - 0xc]
call dword [sym.imp.ntoskrnl.exe_ZwWriteFile]
push esi
push 1
push dword [ebp - 0xc]
mov dword [ebp + 8], eax
call edi
cmp dword [ebp - 0x14], esi
jl 0x19167
add dword [ebp - 0x24], ebx
adc dword [ebp - 0x20], esi
sub dword [ebp - 0x1c], ebx
mov eax, dword [ebp - 0x1c]
sbb dword [ebp - 0x18], esi
or eax, dword [ebp - 0x18]
jne 0x1906e
push 4
push 0x28
lea eax, [ebp - 0x7c]
push eax
lea eax, [ebp - 0x14]
push eax
push dword [ebp - 4]
call dword [sym.imp.ntoskrnl.exe_ZwQueryInformationFile]
push esi
push 1
push dword [ebp - 4]
call edi
cmp dword [ebp - 0x14], esi
jl 0x19139
or dword [ebp - 0x5c], 6
push 4
push 0x28
lea eax, [ebp - 0x7c]
push eax
lea eax, [ebp - 0x14]
push eax
push dword [ebp - 0xc]
call dword [sym.imp.ntoskrnl.exe_ZwSetInformationFile]
lea eax, [ebp - 0x14]
push eax
push dword [ebp - 0xc]
call fcn.0001880a
push dword [ebp - 8]
call fcn.000153f8
push dword [ebp - 4]
mov esi, dword [sym.imp.ntoskrnl.exe_ZwClose]
call esi
push dword [ebp - 0xc]
call esi
mov eax, dword [ebp + 8]
pop edi
pop ebx
pop esi
leave
ret 8
push dword [ebp - 8]
call fcn.000153f8
push dword [ebp - 4]
mov esi, dword [sym.imp.ntoskrnl.exe_ZwClose]
call esi
push dword [ebp - 0xc]
call esi
mov eax, dword [ebp - 0x14]
jmp 0x19160