Function at 0x437900
Capabilities:
Check if file exists
Get file attributes
Query or enumerate registry value
Set registry value
Write file on windows

Disassembly:
push ebp
mov ebp, esp
mov ecx, 7
push 0
push 0
dec ecx
jne 0x437908
push ecx
push ebx
push esi
push edi
mov esi, edx
mov edi, eax
xor eax, eax
push ebp
push 0x437b87
push dword fs:[eax]
mov dword fs:[eax], esp
mov eax, edi
call fcn.00437734
cmp word [0x4566b8], 0
jne 0x437b5b
push edi
call sub.KERNEL32.dll_GetFileAttributesW
cmp eax, 0xffffffff
sete bl
test esi, esi
je 0x437950
mov eax, ebx
xor al, 1
mov byte [esi], al
lea eax, [ebp - 0x10]
push eax
push 0xf003f
push 0
lea edx, [ebp - 0x28]
mov eax, dword [0x454dd8]
call fcn.00427e90
push dword [ebp - 0x28]
push 0x437ba0
lea edx, [ebp - 0x2c]
mov eax, dword [0x454da8]
call fcn.00427e90
push dword [ebp - 0x2c]
lea eax, [ebp - 0x24]
mov edx, 3
call fcn.00425858
mov eax, dword [ebp - 0x24]
call fcn.00425998
push eax
push reloc.OLEAUT32.dll_SysReAllocString
call sub.ADVAPI32.dll_RegOpenKeyExA
not eax
test eax, eax
jne 0x4379ab
xor eax, eax
mov dword [ebp - 0x10], eax
mov dword [ebp - 8], 8
mov dword [ebp - 0xc], 4
test bl, bl
jne 0x437a6b
cmp dword [ebp - 0x10], 0
je 0x437a6b
lea eax, [ebp - 8]
push eax
lea eax, [ebp - 0x18]
push eax
lea eax, [ebp - 0x20]
push eax
push 0
lea edx, [ebp - 0x30]
mov eax, dword [0x454db8]
call fcn.00427e90
mov eax, dword [ebp - 0x30]
call fcn.00425998
push eax
mov eax, dword [ebp - 0x10]
push eax
call sub.ADVAPI32.dll_RegQueryValueExA
test eax, eax
jne 0x437a6b
cmp dword [ebp - 0x20], 3
jne 0x437a6b
cmp dword [ebp - 8], 8
jne 0x437a6b
lea eax, [ebp - 0xc]
push eax
lea eax, [ebp - 0x1c]
push eax
lea eax, [ebp - 0x20]
push eax
push 0
lea edx, [ebp - 0x34]
mov eax, dword [0x454dbc]
call fcn.00427e90
mov eax, dword [ebp - 0x34]
call fcn.00425998
push eax
mov eax, dword [ebp - 0x10]
push eax
call sub.ADVAPI32.dll_RegQueryValueExA
test eax, eax
jne 0x437a6b
cmp dword [ebp - 0x20], 3
jne 0x437a6b
cmp dword [ebp - 0xc], 4
jne 0x437a6b
cmp dword [ebp - 0x14], 0x10000
jne 0x437a59
cmp dword [ebp - 0x18], 0x10000
jbe 0x437a6b
jmp 0x437a5b
jle 0x437a6b
mov eax, edi
call fcn.00437680
cmp eax, dword [ebp - 0x1c]
je 0x437b48
push 0
push 0
push 2
push 0
push 0
push 0xc0000000
push edi
call sub.KERNEL32.dll_CreateFileW
mov esi, eax
cmp esi, 0xffffffff
je 0x437b44
lea edx, [ebp - 4]
mov eax, dword [0x454f90]
call fcn.0043786c
push 0
lea eax, [ebp - 8]
push eax
mov eax, dword [ebp - 4]
call fcn.00425798
push eax
mov eax, dword [ebp - 4]
push eax
push esi
call sub.KERNEL32.dll_WriteFile
test eax, eax
je 0x437ac2
mov eax, dword [ebp - 4]
call fcn.00425798
cmp eax, dword [ebp - 8]
je 0x437ac6
xor ebx, ebx
jmp 0x437ac8
mov bl, 1
push esi
call sub.KERNEL32.dll_CloseHandle
test bl, bl
je 0x437b4a
cmp dword [ebp - 0x10], 0
je 0x437b4a
mov dword [ebp - 0x18], 0x10000
mov dword [ebp - 0x14], 0x10000
mov eax, edi
call fcn.00437680
mov dword [ebp - 0x1c], eax
push 8
lea eax, [ebp - 0x18]
push eax
push 3
push 0
lea edx, [ebp - 0x38]
mov eax, dword [0x454db8]
call fcn.00427e90
mov eax, dword [ebp - 0x38]
call fcn.00425998
push eax
mov eax, dword [ebp - 0x10]
push eax
call sub.ADVAPI32.dll_RegSetValueExA
push 4
lea eax, [ebp - 0x1c]
push eax
push 3
push 0
lea edx, [ebp - 0x3c]
mov eax, dword [0x454dbc]
call fcn.00427e90
mov eax, dword [ebp - 0x3c]
call fcn.00425998
push eax
mov eax, dword [ebp - 0x10]
push eax
call sub.ADVAPI32.dll_RegSetValueExA
jmp 0x437b4a
xor ebx, ebx
jmp 0x437b4a
mov bl, 1
cmp dword [ebp - 0x10], 0
je 0x437b64
mov eax, dword [ebp - 0x10]
push eax
call sub.ADVAPI32.dll_RegCloseKey
jmp 0x437b64
mov bl, 1
test esi, esi
je 0x437b64
mov byte [esi], 1
xor eax, eax
pop edx
pop ecx
pop ecx
mov dword fs:[eax], edx
push 0x437b8e
lea eax, [ebp - 0x3c]
mov edx, 7
call fcn.0042552c
lea eax, [ebp - 4]
call fcn.00425508
ret