Function at 0x490cff
Capabilities:
Get file size
Read file on windows

Disassembly:
push 0xffffffffffffffff
push 0x535fba
mov eax, dword fs:[0]
push eax
sub esp, 0x2c
push ebx
push ebp
push esi
push edi
mov eax, dword [0x590700]
xor eax, esp
push eax
lea eax, [esp + 0x40]
mov dword fs:[0], eax
mov esi, ecx
lea eax, [esp + 0x20]
push eax
call fcn.00490a74
xor ebx, ebx
push ebx
push 0x80
push 3
push ebx
push 1
push SysReAllocString
mov dword [esp + 0x60], ebx
push dword [esp + 0x38]
call dword [sym.imp.KERNEL32.dll_CreateFileW]
mov edi, eax
cmp edi, 0xffffffff
jne 0x490d86
cmp dword [0x59735c], ebx
je 0x490f24
call dword [sym.imp.KERNEL32.dll_GetCurrentThreadId]
push eax
push str._ERROR___d___read_download_info__open_file_failed_
push 1
push dword [0x59735c]
call fcn.0048161a
add esp, 0x10
jmp 0x490f24
lea eax, [esp + 0x24]
push eax
push edi
call dword [sym.imp.KERNEL32.dll_GetFileSizeEx]
test eax, eax
jne 0x490db3
cmp dword [0x59735c], ebx
je 0x490f19
call dword [sym.imp.KERNEL32.dll_GetCurrentThreadId]
push eax
push str._ERROR___d___read_download_info__get_file_size_failed_
jmp 0x490f09
push 2
lea eax, [esp + 0x30]
push eax
push 0xffffffffffffffff
push 0xfffffffffffffffc
push edi
call dword [sym.imp.KERNEL32.dll_SetFilePointerEx]
test eax, eax
jne 0x490de6
cmp dword [0x59735c], ebx
je 0x490f19
call dword [sym.imp.KERNEL32.dll_GetCurrentThreadId]
push eax
push str._ERROR___d___read_download_info__set_base_down_info_pointer_failed_
jmp 0x490f09
push ebx
lea eax, [esp + 0x20]
mov dword [esp + 0x20], ebx
push eax
push 4
lea ebp, [esi + 0x5c]
push ebp
push edi
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x490ef5
cmp dword [esp + 0x1c], 4
jne 0x490ef5
cmp dword [ebp], ebx
jbe 0x490f19
cmp dword [ebp], 0x3f
ja 0x490f19
cmp dword [ebp], ebx
jle 0x490e34
push dword [ebp]
mov ecx, esi
call fcn.0048ee45
jmp 0x490e36
mov al, bl
test al, al
je 0x490f19
mov ecx, esi
call fcn.0048f98d
test al, al
je 0x490f19
imul eax, dword [esi + 0x50], 0x18
push 0xfffffffffffffffc
pop ecx
push 2
sub ecx, eax
mov eax, ecx
lea ecx, [esp + 0x38]
push ecx
cdq
push edx
push eax
push edi
call dword [sym.imp.KERNEL32.dll_SetFilePointerEx]
mov ebp, dword [sym.imp.KERNEL32.dll_GetCurrentThreadId]
test eax, eax
jne 0x490e93
cmp dword [0x59735c], ebx
je 0x490e93
call ebp
push eax
push str._ERROR___d___read_download_info__set_info_pointer_failed_
push 1
push dword [0x59735c]
call fcn.0048161a
add esp, 0x10
push ebx
lea eax, [esp + 0x1c]
mov dword [esp + 0x1c], ebx
push eax
imul eax, dword [esi + 0x50], 0x18
push eax
push dword [esi + 0x60]
push edi
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
je 0x490ebe
imul eax, dword [esi + 0x50], 0x18
cmp dword [esp + 0x18], eax
jne 0x490ebe
mov bl, 1
jmp 0x490f19
cmp dword [0x59735c], ebx
je 0x490ee2
push dword [esp + 0x18]
call ebp
push eax
push str._ERROR___d___read_download_info__read_info_failed__read_size__d_
push 1
push dword [0x59735c]
call fcn.0048161a
add esp, 0x14
imul eax, dword [esi + 0x50], 0x18
push eax
push ebx
push dword [esi + 0x60]
call fcn.00508660
add esp, 0xc
jmp 0x490f19
cmp dword [0x59735c], ebx
je 0x490f19
call dword [sym.imp.KERNEL32.dll_GetCurrentThreadId]
push eax
push str._ERROR___d___read_download_info__read_base_down_info_failed_
push 1
push dword [0x59735c]
call fcn.0048161a
add esp, 0x10
test edi, edi
je 0x490f24
push edi
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov ecx, dword [esp + 0x20]
add ecx, 0xfffffff0
call fcn.00450cc2
mov al, bl
mov ecx, dword [esp + 0x40]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x38
ret