Function at 0x43fbb0
Capabilities:
Check if file exists
Create process on windows

Disassembly:
push ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x4abba8
mov eax, dword fs:[0]
push eax
sub esp, 0x68
push ebx
push esi
push edi
mov eax, dword [0x4e52d0]
xor eax, ebp
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
push 0x44
lea eax, [ebp - 0x74]
push 0
push eax
mov dword [ebp - 4], 0
call fcn.004950a0
add esp, 0xc
mov dword [ebp - 0x48], 0x80
call fcn.00404f00
lea ecx, [ebp + 8]
lea edx, [ebp - 0x18]
push ecx
push edx
test al, al
je 0x43fcb8
mov ebx, str.BFDesktopShell64.dll
call fcn.00404520
add esp, 8
mov ebx, 1
mov byte [ebp - 4], bl
mov eax, dword [ebp - 0x18]
push eax
call dword [sym.imp.SHLWAPI.dll_PathFileExistsW]
test eax, eax
je 0x43fd85
mov edx, dword [0x4e4f18]
mov eax, dword [edx + 0xc]
mov ecx, 0x4e4f18
call eax
add eax, 0x10
mov dword [ebp - 0x14], eax
mov byte [ebp - 4], 2
mov ecx, dword [ebp - 0x18]
push ecx
push str.regsvr32__s___s_
lea edi, [ebp - 0x14]
call fcn.00402360
mov esi, dword [ebp - 0x14]
add esp, 8
cmp dword [esi - 4], ebx
jle 0x43fc77
mov edx, dword [esi - 0xc]
push edx
mov eax, edi
push eax
call fcn.004021c0
mov esi, dword [ebp - 0x14]
lea ecx, [ebp - 0x28]
push ecx
lea edx, [ebp - 0x74]
push edx
push 0
push 0
push 0
push 0
push 0
push 0
push esi
push 0
call dword [sym.imp.KERNEL32.dll_CreateProcessW]
mov eax, dword [esi - 8]
push eax
push esi
call fcn.004923b5
add esp, 8
test eax, eax
js 0x43fcae
cmp eax, dword [esi - 8]
jle 0x43fd5d
push 0x80070057
call fcn.00402bc0
mov ebx, str.BFDesktopShell.dll
call fcn.00404520
add esp, 8
mov bl, 3
mov byte [ebp - 4], bl
mov eax, dword [ebp - 0x18]
push eax
call dword [sym.imp.SHLWAPI.dll_PathFileExistsW]
test eax, eax
je 0x43fd85
mov edx, dword [0x4e4f18]
mov eax, dword [edx + 0xc]
mov ecx, 0x4e4f18
call eax
add eax, 0x10
mov dword [ebp - 0x14], eax
mov byte [ebp - 4], 4
mov ecx, dword [ebp - 0x18]
push ecx
push str.regsvr32__s___s_
lea edi, [ebp - 0x14]
call fcn.00402360
mov esi, dword [ebp - 0x14]
add esp, 8
cmp dword [esi - 4], 1
jle 0x43fd22
mov edx, dword [esi - 0xc]
push edx
mov eax, edi
push eax
call fcn.004021c0
mov esi, dword [ebp - 0x14]
lea ecx, [ebp - 0x28]
push ecx
lea edx, [ebp - 0x74]
push edx
push 0
push 0
push 0
push 0
push 0
push 0
push esi
push 0
call dword [sym.imp.KERNEL32.dll_CreateProcessW]
mov eax, dword [esi - 8]
push eax
push esi
call fcn.004923b5
add esp, 8
test eax, eax
js 0x43fcae
cmp eax, dword [esi - 8]
jg 0x43fcae
xor ecx, ecx
mov dword [esi - 0xc], eax
mov word [esi + eax*2], cx
lea eax, [esi - 0x10]
mov byte [ebp - 4], bl
lea edx, [eax + 0xc]
or ecx, 0xffffffff
lock xadd dword [edx], ecx
dec ecx
test ecx, ecx
jg 0x43fd85
mov ecx, dword [eax]
mov edx, dword [ecx]
push eax
mov eax, dword [edx + 4]
call eax
mov byte [ebp - 4], 0
mov eax, dword [ebp - 0x18]
add eax, 0xfffffff0
or edx, 0xffffffff
lea ecx, [eax + 0xc]
lock xadd dword [ecx], edx
dec edx
test edx, edx
jg 0x43fda8
mov ecx, dword [eax]
mov edx, dword [ecx]
push eax
mov eax, dword [edx + 4]
call eax
mov dword [ebp - 4], 0xffffffff
mov eax, dword [ebp + 8]
add eax, 0xfffffff0
lea ecx, [eax + 0xc]
or edx, 0xffffffff
lock xadd dword [ecx], edx
dec edx
test edx, edx
jg 0x43fdce
mov ecx, dword [eax]
mov edx, dword [ecx]
push eax
mov eax, dword [edx + 4]
call eax
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret 4