Function at 0x43f800
Capabilities:
Get file size
Read file on windows

Disassembly:
push ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x4d97db
mov eax, dword fs:[0]
push eax
mov dword fs:[0], esp
sub esp, 0x1c
mov edx, dword [ebp + 8]
push ebx
push esi
push edi
lea eax, [ecx + 0x1086]
mov dword [ebp - 0x10], esp
mov dword [ebp - 0x18], ecx
mov dword [ebp - 0x14], eax
mov esi, edx
mov bl, byte [eax]
mov cl, bl
cmp bl, byte [esi]
jne 0x43f856
test cl, cl
je 0x43f852
mov bl, byte [eax + 1]
mov cl, bl
cmp bl, byte [esi + 1]
jne 0x43f856
add eax, 2
add esi, 2
test cl, cl
jne 0x43f832
xor eax, eax
jmp 0x43f85b
sbb eax, eax
sbb eax, 0xffffffff
test eax, eax
je 0x43fa17
mov edi, edx
or ecx, 0xffffffff
xor eax, eax
push 0
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
push 0x80
mov eax, ecx
mov esi, edi
mov edi, dword [ebp - 0x14]
push 3
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, eax
push 0
and ecx, 3
push 1
push 0x80000000
push edx
rep movsb byte es:[edi], byte [esi]
call dword [sym.imp.KERNEL32.dll_CreateFileA]
mov edi, eax
cmp edi, 0xffffffff
mov dword [ebp - 0x20], edi
je 0x43fa17
push 0
push edi
call dword [sym.imp.KERNEL32.dll_GetFileSize]
mov esi, eax
cmp esi, 0xffffffff
je 0x43fa10
lea ecx, [esi + 1]
push ecx
push 0x40
call dword [sym.imp.KERNEL32.dll_GlobalAlloc]
test eax, eax
mov dword [ebp - 0x14], eax
je 0x43fa10
lea edx, [ebp - 0x1c]
push 0
push edx
push esi
xor bl, bl
push eax
push edi
mov dword [ebp - 0x1c], 0
mov byte [ebp + 0xb], bl
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x43fa06
mov eax, dword [ebp - 0x18]
mov dword [ebp - 4], 0
cmp dword [eax], 0
je 0x43f9e0
push 0xc
call sub.MFC42.DLL_operatornew
mov esi, eax
add esp, 4
mov dword [ebp - 0x24], esi
test esi, esi
mov byte [ebp - 4], 1
je 0x43f94b
mov ecx, dword [ebp - 0x14]
mov dword [esi + 4], 0
push ecx
mov dword [esi + 8], 1
call fcn.0045bdfd
test eax, eax
mov dword [esi], eax
jne 0x43f94d
push 0x8007000e
call fcn.0045bd50
jmp 0x43f94d
xor esi, esi
test esi, esi
mov byte [ebp - 4], 0
mov dword [ebp - 0x24], esi
jne 0x43f962
push 0x8007000e
call fcn.0045bd50
push ecx
mov eax, esp
mov dword [ebp - 0x28], esp
test esi, esi
mov dword [eax], esi
je 0x43f978
lea edx, [esi + 8]
push edx
call dword [sym.imp.KERNEL32.dll_InterlockedIncrement]
mov ebx, dword [ebp - 0x18]
mov byte [ebp - 4], 3
mov ecx, ebx
call fcn.00440650
mov ecx, eax
mov byte [ebp - 4], 2
call fcn.004410e0
mov ecx, ebx
call fcn.0043f5b0
test esi, esi
mov bl, 1
je 0x43f9e0
lea eax, [esi + 8]
push eax
call dword [sym.imp.KERNEL32.dll_InterlockedDecrement]
test eax, eax
jne 0x43f9e0
mov eax, dword [esi]
test eax, eax
je 0x43f9b9
push eax
call dword [sym.imp.OLEAUT32.dll_SysStringLen]
mov eax, dword [esi + 4]
test eax, eax
je 0x43f9c9
push eax
call sub.MFC42.DLL_operatordelete
add esp, 4
push esi
call sub.MFC42.DLL_operatordelete
add esp, 4
jmp 0x43f9e0
mov ecx, dword [ebp - 0x14]
push ecx
call dword [sym.imp.KERNEL32.dll_GlobalFree]
push edi
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov al, bl
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret 4
mov edx, dword [ebp - 0x14]
push edx
call dword [sym.imp.KERNEL32.dll_GlobalFree]
push edi
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov ecx, dword [ebp - 0xc]
pop edi
pop esi
xor al, al
mov dword fs:[0], ecx
pop ebx
mov esp, ebp
pop ebp
ret 4