Function at 0x480440
Capabilities:
Check if file exists
Download and write a file
Read data from internet
Receive and write data from server to client
Receive data
Write file on windows

Disassembly:
push ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x4d3b45
mov eax, dword fs:[0]
push eax
sub esp, 0x70
mov eax, dword [0x5020a8]
xor eax, ebp
mov dword [ebp - 0x14], eax
push ebx
push esi
push edi
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
mov ebx, edx
mov eax, ecx
mov dword [ebp - 0x64], eax
mov edi, dword [ebp + 8]
mov ecx, dword [ebp + 0x10]
mov dword [ebp - 0x58], edi
mov dword [ebp - 0x60], ecx
test eax, eax
je 0x4806c6
test ebx, ebx
je 0x4806c6
test edi, edi
je 0x4806c6
push 0x4d94e6
push 0x100
call fcn.004a034c
xor esi, esi
mov dword [ebp - 0x78], vtable.CxAutoArray_unsigned_char_.0
add esp, 8
mov dword [ebp - 0x74], esi
test eax, eax
je 0x4804c4
mov esi, eax
mov dword [ebp - 0x70], 0
mov dword [ebp - 0x74], esi
lea eax, [ebp - 0x38]
mov dword [ebp - 4], 0
push eax
push 0
push edi
call dword [sym.imp.KERNEL32.dll_GetFileAttributesExW]
test eax, eax
je 0x4804ea
mov eax, dword [ebp - 0x18]
mov dword [ebp - 0x44], eax
mov eax, dword [ebp - 0x1c]
mov dword [ebp - 0x48], eax
jmp 0x4804fe
xorps xmm0, xmm0
movlpd qword [ebp - 0x54], xmm0
mov eax, dword [ebp - 0x50]
mov dword [ebp - 0x48], eax
mov eax, dword [ebp - 0x54]
mov dword [ebp - 0x44], eax
push edi
lea ecx, [ebp - 0x3c]
call fcn.00404b10
lea edx, [ebp - 0x3c]
mov byte [ebp - 4], 1
lea ecx, [ebp - 0x4c]
call fcn.00489450
mov byte [ebp - 4], 3
or eax, 0xffffffff
mov edx, dword [ebp - 0x3c]
add edx, 0xfffffff0
lock xadd dword [edx + 0xc], eax
dec eax
test eax, eax
jg 0x480535
mov ecx, dword [edx]
push edx
mov eax, dword [ecx]
call dword [eax + 4]
push dword [ebp - 0x4c]
call dword [sym.imp.SHLWAPI.dll_PathFileExistsW]
test eax, eax
jne 0x48054a
lea ecx, [ebp - 0x4c]
call fcn.00489430
xor edi, edi
mov dword [ebp - 0x6c], edi
mov dword [ebp - 0x68], edi
push edi
push 0x80
push 4
push edi
push 2
push 0x40000000
push dword [ebp - 0x58]
mov byte [ebp - 4], 4
call dword [sym.imp.KERNEL32.dll_CreateFileW]
cmp eax, 0xffffffff
jne 0x4805bd
call fcn.00480fe0
test eax, eax
jns 0x4805c2
xor ebx, ebx
test edi, edi
je 0x48058a
push edi
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov byte [ebp - 4], 0
or eax, 0xffffffff
mov edx, dword [ebp - 0x4c]
add edx, 0xfffffff0
lock xadd dword [edx + 0xc], eax
dec eax
test eax, eax
jg 0x4805a9
mov ecx, dword [edx]
push edx
mov eax, dword [ecx]
call dword [eax + 4]
test esi, esi
je 0x4805b6
push esi
call fcn.004a0355
add esp, 4
mov eax, ebx
jmp 0x4806c8
mov edi, eax
mov dword [ebp - 0x6c], edi
push 2
lea eax, [ebp - 0x50]
xorps xmm0, xmm0
push eax
push 0
push edi
movlpd qword [ebp - 0x54], xmm0
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
cmp eax, 0xffffffff
jne 0x4805e3
call fcn.00480fe0
mov ecx, ebx
call fcn.0048af10
mov dword [ebp - 0x50], eax
mov dword [ebp - 0x5c], edx
call dword [sym.imp.KERNEL32.dll_GetTickCount]
lea eax, [ebp - 0x40]
mov dword [ebp - 0x40], 0
push eax
mov eax, dword [ebx + 0x10]
push 0x100
push esi
mov dword [ebp - 0x3c], 0
push dword [eax]
call dword [sym.imp.WININET.dll_InternetReadFile]
test eax, eax
je 0x48057d
mov eax, dword [ebp - 0x40]
test eax, eax
je 0x4806bc
push 0
lea ecx, [ebp - 0x3c]
push ecx
push eax
push esi
push edi
call dword [sym.imp.KERNEL32.dll_WriteFile]
test eax, eax
jne 0x48064c
call fcn.00480fe0
test eax, eax
js 0x48057d
mov eax, dword [ebp - 0x40]
cmp dword [ebp - 0x3c], eax
jne 0x48057d
mov ecx, dword [ebp - 0x44]
mov edx, dword [ebp - 0x48]
add ecx, eax
push eax
adc edx, 0
mov dword [ebp - 0x44], ecx
push edx
push ecx
push dword [ebp - 0x5c]
mov dword [ebp - 0x48], edx
push dword [ebp - 0x50]
push dword [ebp - 0x58]
push dword [ebp - 0x60]
push ebx
push dword [ebp - 0x64]
call fcn.0048d190
add esp, 0x24
test eax, eax
je 0x48057d
lea eax, [ebp - 0x40]
mov dword [ebp - 0x40], 0
push eax
mov eax, dword [ebx + 0x10]
push 0x100
push esi
mov dword [ebp - 0x3c], 0
push dword [eax]
call dword [sym.imp.WININET.dll_InternetReadFile]
test eax, eax
jne 0x480621
jmp 0x48057d
mov ebx, 1
jmp 0x48057f
xor eax, eax
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov ecx, dword [ebp - 0x14]
xor ecx, ebp
call fcn.004a024d
mov esp, ebp
pop ebp
ret