Function at 0x41dbff
Capabilities:
Check if file exists
Delete file
Get common file path
Get file attributes

Disassembly:
mov eax, 0x433396
call fcn.00425db8
sub esp, 0x2b0
push ebx
push esi
push edi
mov al, byte [ebp + 0x33]
xor ebx, ebx
mov dword [ebp - 4], ebx
mov byte [ebp - 0x20], al
mov dword [ebp - 0x1c], ebx
mov dword [ebp - 0x18], ebx
mov dword [ebp - 0x14], ebx
lea eax, [ebp - 0x20]
lea ecx, [ebp + 8]
push eax
push 0x3b
mov byte [ebp - 4], 1
call fcn.004174dd
cmp dword [ebp - 0x1c], ebx
je 0x41dca5
mov eax, dword [ebp - 0x18]
push 0x28
sub eax, dword [ebp - 0x1c]
pop ecx
mov edi, 0x43447c
mov esi, 0x434474
cdq
idiv ecx
cmp eax, 3
jne 0x41dc8f
lea eax, [ebp - 0xd]
push ebx
push eax
push 0x440144
lea ecx, [ebp - 0x60]
mov dword [ebp - 0x60], edi
mov dword [ebp - 0x40], esi
call fcn.0040ba8c
lea eax, [ebp - 0x60]
lea ecx, [ebp - 0x20]
push eax
mov byte [ebp - 4], 2
push dword [ebp - 0x18]
call fcn.0041e230
lea ecx, [ebp - 0x60]
mov byte [ebp - 4], 1
call fcn.0040191f
cmp dword [ebp - 0x1c], ebx
je 0x41dca5
mov eax, dword [ebp - 0x18]
push 0x28
sub eax, dword [ebp - 0x1c]
pop ecx
cdq
idiv ecx
cmp eax, 4
je 0x41dcad
push 0xfffffffffffffffc
pop esi
jmp 0x41dee0
mov eax, dword [ebp - 0x1c]
mov eax, dword [eax + 0x30]
cmp eax, ebx
jne 0x41dcbc
mov eax, 0x434494
push eax
call fcn.0042803a
mov dword [ebp - 0x34], eax
mov eax, dword [ebp - 0x1c]
pop ecx
mov eax, dword [eax + 0x58]
cmp eax, ebx
jne 0x41dcd5
mov eax, 0x434494
push eax
call fcn.0042803a
mov dword [ebp - 0x38], eax
lea eax, [ebp - 0x8c]
push eax
call fcn.0040aa5e
pop ecx
pop ecx
lea ecx, [ebp - 0x8c]
mov byte [ebp - 4], 3
mov byte [ebp - 0xd], bl
call fcn.004016f0
push eax
call dword [sym.imp.KERNEL32.dll_GetFileAttributesA]
cmp eax, 0xffffffff
jne 0x41de2e
lea eax, [ebp - 0x21]
push ebx
push eax
lea ecx, [ebp - 0x60]
mov dword [ebp - 0x60], edi
mov dword [ebp - 0x40], esi
call fcn.00401581
mov esi, 0x104
lea eax, [ebp - 0x30]
push esi
push eax
lea ecx, [ebp - 0x60]
mov byte [ebp - 4], 4
call fcn.0040b195
mov edi, eax
mov ecx, dword [edi]
mov byte [ebp - 4], 5
call fcn.004016f0
push eax
push esi
mov dword [edi + 8], eax
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
lea ecx, [ebp - 0x30]
mov byte [ebp - 4], 4
call fcn.0040b485
lea eax, [ebp - 0x30]
push esi
push eax
lea ecx, [ebp - 0x8c]
call fcn.0040b195
mov edi, eax
mov ecx, dword [edi]
mov byte [ebp - 4], 6
call fcn.004016f0
push eax
push ebx
push 0x43c8a4
lea ecx, [ebp - 0x60]
mov dword [edi + 8], eax
call fcn.004016f0
push eax
call dword [sym.imp.KERNEL32.dll_GetTempFileNameA]
lea ecx, [ebp - 0x30]
mov byte [ebp - 4], 4
call fcn.0040b485
lea eax, [ebp - 0x2bc]
push esi
push eax
push dword [0x443130]
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameA]
lea eax, [ebp - 0x2bc]
lea ecx, [ebp - 0x1b8]
push eax
call fcn.0041e332
push ebx
lea ecx, [ebp - 0x8c]
mov byte [ebp - 4], 7
call fcn.004016f0
push eax
push str.ISSetup.dll
lea ecx, [ebp - 0x1b8]
call fcn.0041e594
cmp eax, 1
je 0x41de0f
cmp dword [ebp - 0x70], ebx
mov esi, dword [0x434620]
je 0x41de00
push dword [ebp - 0x70]
call dword [sym.imp.OLEAUT32.dll_SysStringLen]
mov dword [ebp - 0x70], ebx
push esi
push ebx
lea ecx, [ebp - 0x88]
call fcn.0040c68b
jmp 0x41de13
mov byte [ebp - 0xd], 1
lea ecx, [ebp - 0x1b8]
mov byte [ebp - 4], 4
call fcn.0041e477
lea ecx, [ebp - 0x60]
mov byte [ebp - 4], 3
call fcn.0040191f
cmp dword [ebp - 0x80], ebx
mov esi, 0x1b59
je 0x41de8f
lea eax, [ebp - 0x8c]
lea ecx, [ebp - 0x64]
push eax
call fcn.0040a9be
lea ecx, [ebp - 0x64]
mov byte [ebp - 4], 8
call fcn.0040ab9b
test eax, eax
jne 0x41de6b
mov esi, dword [0x443124]
lea ecx, [ebp - 0x64]
mov byte [ebp - 4], 3
call fcn.0040aa3b
jmp 0x41ded1
mov eax, dword [ebp - 0x1c]
lea ecx, [eax + 0x78]
push ecx
lea ecx, [ebp - 0x64]
push dword [ebp - 0x38]
push dword [ebp - 0x34]
push eax
call fcn.0040b0a4
lea ecx, [ebp - 0x64]
mov esi, eax
mov byte [ebp - 4], 3
call fcn.0040aa3b
cmp byte [ebp - 0xd], bl
je 0x41dea6
lea ecx, [ebp - 0x8c]
call fcn.004016f0
push eax
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp byte [ebp + 0x30], bl
je 0x41ded1
lea ecx, [ebp - 0x30]
call fcn.0040197c
push dword [0x443130]
lea ecx, [ebp - 0x30]
mov byte [ebp - 4], 9
call fcn.004019b0
lea ecx, [ebp - 0x30]
mov byte [ebp - 4], 3
call fcn.004019a9
lea ecx, [ebp - 0x8c]
mov byte [ebp - 4], 1
call fcn.0040191f
lea ecx, [ebp - 0x20]
mov byte [ebp - 4], bl
call fcn.004178fc
or dword [ebp - 4], 0xffffffff
lea ecx, [ebp + 8]
call fcn.0040191f
mov ecx, dword [ebp - 0xc]
mov eax, esi
pop edi
pop esi
pop ebx
mov dword fs:[0], ecx
leave
ret