Function at 0x40f190
Capabilities:
Get file size
Write file on windows

Disassembly:
push ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x49c5d7
mov eax, dword fs:[0]
push eax
sub esp, 0x48
mov eax, dword [0x4d304c]
xor eax, ebp
mov dword [ebp - 0x10], eax
push ebx
push esi
push edi
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
mov ebx, ecx
mov esi, dword [ebp + 8]
push 4
mov dword [ebp - 0x20], 0
call fcn.00476ba8
mov dword [ebp - 0x28], eax
mov dword [ebp - 4], 0
mov dword [eax], 0
mov dword [eax], 0xffffffff
mov dword [ebp - 4], 0xffffffff
mov dword [ebp - 0x20], eax
mov dword [ebp - 4], 1
lea eax, [ebp - 0x20]
push 2
push 0
push 0x40000000
push esi
push eax
call fcn.00411040
mov esi, dword [ebp - 0x20]
test al, al
je 0x40f37a
test esi, esi
je 0x40f251
mov eax, dword [esi]
cmp eax, 0xffffffff
je 0x40f251
lea ecx, [ebp - 0x28]
push ecx
push eax
call dword [sym.imp.KERNEL32.dll_GetFileSize]
mov edi, eax
cmp edi, 0xffffffff
jne 0x40f23a
call dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
jne 0x40f251
mov eax, dword [ebp - 0x28]
xor ecx, ecx
add ecx, edi
adc eax, 0
jne 0x40f24a
test ecx, ecx
je 0x40f251
mov bl, 1
jmp 0x40f37c
xorps xmm0, xmm0
mov dword [ebp - 0x14], 0
movq qword [ebp - 0x1c], xmm0
mov dword [ebp - 0x1c], 0
mov dword [ebp - 0x18], 0
mov dword [ebp - 0x14], 0
mov byte [ebp - 4], 2
lea ecx, [ebp - 0x54]
call fcn.0040e440
mov byte [ebp - 4], 3
lea ecx, [ebx + 0x24]
mov eax, dword [ecx]
cmp eax, dword [ecx + 4]
jne 0x40f299
lea ecx, [ebp - 0x54]
call fcn.0040e4e0
jmp 0x40f2a2
push ecx
lea ecx, [ebp - 0x54]
call fcn.004112c0
lea edx, [ebp - 0x1c]
lea ecx, [ebp - 0x54]
call fcn.0040f000
mov edi, dword [ebp - 0x18]
sub edi, dword [ebp - 0x1c]
mov dword [ebp - 0x24], 0
test esi, esi
jne 0x40f2c2
xor bl, bl
jmp 0x40f30e
cmp dword [ebp - 0x1c], 0
jne 0x40f2cc
xor bl, bl
jmp 0x40f2f6
mov eax, dword [esi]
cmp eax, 0xffffffff
jne 0x40f2d7
xor bl, bl
jmp 0x40f2f6
push 0
lea ecx, [ebp - 0x24]
push ecx
push edi
push dword [ebp - 0x1c]
push eax
call dword [sym.imp.KERNEL32.dll_WriteFile]
test eax, eax
jne 0x40f2f0
xor bl, bl
jmp 0x40f2f6
cmp edi, dword [ebp - 0x24]
sete bl
mov eax, dword [esi]
cmp eax, 0xffffffff
je 0x40f30e
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
test eax, eax
je 0x40f30e
mov dword [esi], 0xffffffff
mov eax, dword [ebp - 0x18]
sub eax, dword [ebp - 0x1c]
cmp dword [ebp - 0x24], eax
jne 0x40f321
test bl, bl
je 0x40f321
mov bl, 1
jmp 0x40f323
xor bl, bl
mov byte [ebp - 4], 2
lea ecx, [ebp - 0x54]
call fcn.00411190
mov byte [ebp - 4], 1
mov ecx, dword [ebp - 0x1c]
test ecx, ecx
je 0x40f37c
mov edx, dword [ebp - 0x14]
mov eax, ecx
sub edx, ecx
cmp edx, 0x1000
jb 0x40f359
mov ecx, dword [ecx - 4]
add edx, 0x23
sub eax, ecx
add eax, 0xfffffffc
cmp eax, 0x1f
ja 0x40f3d1
push edx
push ecx
call fcn.00476e72
add esp, 8
mov dword [ebp - 0x1c], 0
mov dword [ebp - 0x18], 0
mov dword [ebp - 0x14], 0
jmp 0x40f37c
xor bl, bl
mov dword [ebp - 4], 0xffffffff
test esi, esi
je 0x40f3b1
mov eax, dword [esi]
cmp eax, 0xffffffff
je 0x40f39f
test eax, eax
je 0x40f39f
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esi], 0
push 4
push esi
call fcn.00476e72
add esp, 8
mov dword [ebp - 0x20], 0
mov al, bl
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov ecx, dword [ebp - 0x10]
xor ecx, ebp
call fcn.00476b97
mov esp, ebp
pop ebp
ret 4
call fcn.0047b3c9
int3