Function at 0x40f480
Capabilities:
Get file size
Write file on windows

Disassembly:
push ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x49ce27
mov eax, dword fs:[0]
push eax
sub esp, 0x48
mov eax, dword [0x4d404c]
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.00477385
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.00411330
mov esi, dword [ebp - 0x20]
test al, al
je 0x40f66a
test esi, esi
je 0x40f541
mov eax, dword [esi]
cmp eax, 0xffffffff
je 0x40f541
lea ecx, [ebp - 0x28]
push ecx
push eax
call dword [sym.imp.KERNEL32.dll_GetFileSize]
mov edi, eax
cmp edi, 0xffffffff
jne 0x40f52a
call dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
jne 0x40f541
mov eax, dword [ebp - 0x28]
xor ecx, ecx
add ecx, edi
adc eax, 0
jne 0x40f53a
test ecx, ecx
je 0x40f541
mov bl, 1
jmp 0x40f66c
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.0040e730
mov byte [ebp - 4], 3
lea ecx, [ebx + 0x24]
mov eax, dword [ecx]
cmp eax, dword [ecx + 4]
jne 0x40f589
lea ecx, [ebp - 0x54]
call fcn.0040e7d0
jmp 0x40f592
push ecx
lea ecx, [ebp - 0x54]
call fcn.004115b0
lea edx, [ebp - 0x1c]
lea ecx, [ebp - 0x54]
call fcn.0040f2f0
mov edi, dword [ebp - 0x18]
sub edi, dword [ebp - 0x1c]
mov dword [ebp - 0x24], 0
test esi, esi
jne 0x40f5b2
xor bl, bl
jmp 0x40f5fe
cmp dword [ebp - 0x1c], 0
jne 0x40f5bc
xor bl, bl
jmp 0x40f5e6
mov eax, dword [esi]
cmp eax, 0xffffffff
jne 0x40f5c7
xor bl, bl
jmp 0x40f5e6
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 0x40f5e0
xor bl, bl
jmp 0x40f5e6
cmp edi, dword [ebp - 0x24]
sete bl
mov eax, dword [esi]
cmp eax, 0xffffffff
je 0x40f5fe
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
test eax, eax
je 0x40f5fe
mov dword [esi], 0xffffffff
mov eax, dword [ebp - 0x18]
sub eax, dword [ebp - 0x1c]
cmp dword [ebp - 0x24], eax
jne 0x40f611
test bl, bl
je 0x40f611
mov bl, 1
jmp 0x40f613
xor bl, bl
mov byte [ebp - 4], 2
lea ecx, [ebp - 0x54]
call fcn.00411480
mov byte [ebp - 4], 1
mov ecx, dword [ebp - 0x1c]
test ecx, ecx
je 0x40f66c
mov edx, dword [ebp - 0x14]
mov eax, ecx
sub edx, ecx
cmp edx, 0x1000
jb 0x40f649
mov ecx, dword [ecx - 4]
add edx, 0x23
sub eax, ecx
add eax, 0xfffffffc
cmp eax, 0x1f
ja 0x40f6c1
push edx
push ecx
call fcn.0047764f
add esp, 8
mov dword [ebp - 0x1c], 0
mov dword [ebp - 0x18], 0
mov dword [ebp - 0x14], 0
jmp 0x40f66c
xor bl, bl
mov dword [ebp - 4], 0xffffffff
test esi, esi
je 0x40f6a1
mov eax, dword [esi]
cmp eax, 0xffffffff
je 0x40f68f
test eax, eax
je 0x40f68f
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esi], 0
push 4
push esi
call fcn.0047764f
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.00477374
mov esp, ebp
pop ebp
ret 4
call fcn.0047bba9
int3