Function at 0x40b550
Capabilities:
Check if file exists
Create process on windows
Delete file
Extract resource via kernel32 functions
Move file
Write and execute a file
Write file on windows

Disassembly:
push ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x42ab98
mov eax, dword fs:[0]
push eax
sub esp, 0x1c
push ebx
push esi
push edi
mov eax, dword [0x43581c]
xor eax, ebp
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
mov dword [ebp - 0x10], esp
mov edi, ecx
mov dword [ebp - 4], 0
test edi, edi
je 0x40b7ef
mov edx, edi
lea ecx, [edx + 2]
mov ax, word [edx]
add edx, 2
test ax, ax
jne 0x40b591
sub edx, ecx
sar edx, 1
je 0x40b7ef
push edi
call dword [sym.imp.SHLWAPI.dll_PathFileExistsW]
test eax, eax
je 0x40b7ef
push 0x14
push 0x65
push 0
call dword [sym.imp.KERNEL32.dll_FindResourceW]
mov esi, eax
test esi, esi
je 0x40b7cf
push esi
push 0
call dword [sym.imp.KERNEL32.dll_SizeofResource]
mov ebx, eax
test ebx, ebx
je 0x40b7ef
push esi
push 0
call dword [sym.imp.KERNEL32.dll_LoadResource]
test eax, eax
je 0x40b7ef
push eax
call dword [sym.imp.KERNEL32.dll_LockResource]
test eax, eax
je 0x40b7ef
mov dword [ebp - 0x28], 0
mov dword [ebp - 0x24], 0
mov dword [ebp - 0x20], 0
lea ecx, [ebp - 0x28]
push ecx
mov edx, ebx
mov ecx, eax
mov byte [ebp - 4], 1
call fcn.00407940
add esp, 4
test eax, eax
je 0x40b78d
mov ebx, dword [ebp - 0x28]
mov esi, dword [ebp - 0x24]
cmp ebx, esi
je 0x40b78d
push 0x431de8
lea eax, [ebp - 0x18]
push edi
push eax
mov dword [ebp - 0x18], 0
call fcn.0041292f
add esp, 0xc
test eax, eax
jne 0x40b78d
mov eax, dword [ebp - 0x18]
test eax, eax
je 0x40b78d
push eax
sub esi, ebx
push esi
push 1
push ebx
call fcn.00412b95
push dword [ebp - 0x18]
xor ebx, ebx
cmp esi, eax
sete bl
call fcn.00412c7f
add esp, 0x14
test ebx, ebx
je 0x40b78d
mov eax, dword [section..data]
mov ecx, section..data
call dword [eax + 0xc]
add eax, 0x10
mov dword [ebp - 0x1c], eax
push 0x6b
lea ecx, [ebp - 0x1c]
mov byte [ebp - 4], 2
call fcn.00406c60
test eax, eax
je 0x40b767
mov esi, dword [ebp - 0x1c]
cmp dword [esi - 0xc], 0
je 0x40b767
push edi
lea ecx, [ebp - 0x14]
call fcn.00406af0
lea ecx, [ebp - 0x14]
mov byte [ebp - 4], 3
call fcn.0040e060
push esi
lea ecx, [ebp - 0x14]
call fcn.0040df60
test eax, eax
je 0x40b739
push dword [ebp - 0x14]
push edi
call dword [sym.imp.KERNEL32.dll_MoveFileW]
test eax, eax
je 0x40b739
push 1
push 0
push 0
push dword [ebp - 0x14]
push 0
push 0
call dword [sym.imp.SHELL32.dll_ShellExecuteW]
lea ecx, [ebp - 0x14]
mov esi, 1
call fcn.00406ba0
lea ecx, [ebp - 0x1c]
call fcn.00406ba0
lea ecx, [ebp - 0x28]
call fcn.004079b0
mov eax, esi
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
lea ecx, [ebp - 0x14]
xor esi, esi
call fcn.00406ba0
lea ecx, [ebp - 0x1c]
call fcn.00406ba0
lea ecx, [ebp - 0x28]
call fcn.004079b0
mov eax, esi
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
lea ecx, [ebp - 0x1c]
xor esi, esi
call fcn.00406ba0
lea ecx, [ebp - 0x28]
call fcn.004079b0
mov eax, esi
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
lea ecx, [ebp - 0x28]
xor esi, esi
call fcn.004079b0
mov eax, esi
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 edi
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
mov esi, 1
mov eax, esi
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
xor esi, esi
mov eax, esi
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret