Function at 0x4810c0
Capabilities:
Check if file exists
Delete file
Move file
Set file attributes
Write file on windows

Disassembly:
push ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x4d3ce5
mov eax, dword fs:[0]
push eax
sub esp, 0x14
push ebx
push esi
push edi
mov eax, dword [0x5020a8]
xor eax, ebp
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
mov edi, edx
mov ebx, ecx
call fcn.00404de0
mov ecx, eax
test ecx, ecx
je 0x48132e
mov eax, dword [ecx]
call dword [eax + 0xc]
add eax, 0x10
mov dword [ebp - 0x10], eax
push ebx
lea ecx, [ebp - 0x10]
mov dword [ebp - 4], 0
call fcn.00404740
test al, al
jne 0x481140
test ebx, ebx
jne 0x481122
xor ecx, ecx
jmp 0x481136
mov ecx, ebx
lea edx, [ecx + 2]
mov ax, word [ecx]
add ecx, 2
test ax, ax
jne 0x481127
sub ecx, edx
sar ecx, 1
push ecx
push ebx
lea ecx, [ebp - 0x10]
call fcn.00404a10
mov dword [ebp - 4], 1
mov ecx, 1
mov esi, dword [ebp - 0x10]
mov eax, dword [esi - 8]
sub ecx, dword [esi - 4]
sub eax, 0x104
or eax, ecx
jge 0x48116e
push 0x104
lea ecx, [ebp - 0x10]
call fcn.00404970
mov esi, dword [ebp - 0x10]
push esi
call dword [sym.imp.SHLWAPI.dll_PathRemoveFileSpecW]
push dword [esi - 8]
push esi
call fcn.004a9b15
add esp, 8
test eax, eax
js 0x481324
cmp eax, dword [esi - 8]
jg 0x481324
xor ecx, ecx
mov dword [esi - 0xc], eax
push esi
mov word [esi + eax*2], cx
call dword [sym.imp.SHLWAPI.dll_PathFileExistsW]
test eax, eax
jne 0x4811ae
push esi
push eax
call dword [sym.imp.SHELL32.dll_SHCreateDirectory]
call fcn.00404de0
mov ecx, eax
test ecx, ecx
je 0x481338
mov eax, dword [ecx]
call dword [eax + 0xc]
add eax, 0x10
mov dword [ebp - 0x14], eax
lea edx, [ebp - 0x14]
mov byte [ebp - 4], 2
mov ecx, edi
call fcn.004815d0
or edi, 0xffffffff
test eax, eax
je 0x4812d4
mov eax, dword [ebp - 0x14]
mov eax, dword [eax - 0xc]
mov dword [ebp - 0x1c], eax
test ebx, ebx
je 0x4812d4
push ebx
call dword [sym.imp.KERNEL32.dll_lstrlenW]
test eax, eax
je 0x4812d4
call fcn.00404de0
mov ecx, eax
test ecx, ecx
je 0x481342
mov eax, dword [ecx]
call dword [eax + 0xc]
add eax, 0x10
mov dword [ebp - 0x18], eax
push ebx
lea eax, [ebp - 0x18]
mov byte [ebp - 4], 3
push str._s.write_cache
push eax
call fcn.0041a0f0
mov edi, dword [ebp - 0x18]
add esp, 0xc
push 0
push 0x80
push 2
push 0
push 1
push 0x40000000
push edi
call dword [sym.imp.KERNEL32.dll_CreateFileW]
mov dword [ebp - 0x20], eax
cmp eax, 0xffffffff
je 0x4812ad
push 0
lea ecx, [ebp - 0x18]
mov dword [ebp - 0x18], 0
push ecx
push dword [ebp - 0x1c]
push dword [ebp - 0x14]
push eax
call dword [sym.imp.KERNEL32.dll_WriteFile]
mov ecx, dword [ebp - 0x1c]
xor eax, eax
cmp dword [ebp - 0x18], ecx
push dword [ebp - 0x20]
sete al
mov dword [ebp - 0x1c], eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp dword [ebp - 0x1c], 0
je 0x4812b1
push 0x80
push ebx
call dword [sym.imp.KERNEL32.dll_SetFileAttributesW]
push 1
push ebx
push edi
call dword [sym.imp.KERNEL32.dll_MoveFileExW]
push edi
mov ebx, eax
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
jmp 0x4812b4
xor ebx, ebx
jmp 0x4812b4
mov ebx, dword [ebp - 0x1c]
lea edx, [edi - 0x10]
mov byte [ebp - 4], 2
or edi, 0xffffffff
mov eax, edi
lock xadd dword [edx + 0xc], eax
dec eax
test eax, eax
jg 0x4812d6
mov ecx, dword [edx]
push edx
mov eax, dword [ecx]
call dword [eax + 4]
jmp 0x4812d6
xor ebx, ebx
mov byte [ebp - 4], 1
mov eax, edi
mov edx, dword [ebp - 0x14]
add edx, 0xfffffff0
lock xadd dword [edx + 0xc], eax
dec eax
test eax, eax
jg 0x4812f4
mov ecx, dword [edx]
push edx
mov eax, dword [ecx]
call dword [eax + 4]
mov dword [ebp - 4], 0xffffffff
add esi, 0xfffffff0
lock xadd dword [esi + 0xc], edi
dec edi
test edi, edi
jg 0x481310
mov ecx, dword [esi]
push esi
mov edx, dword [ecx]
call dword [edx + 4]
mov eax, ebx
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
push 0x80070057
call fcn.00404bc0
push 0x80004005
call fcn.00404bc0
push 0x80004005
call fcn.00404bc0
push 0x80004005
call fcn.00404bc0
int3