Function at 0x401880
Capabilities:
Get system information on windows
Parse pe header

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x28
push ebx
mov ebx, dword [ebp + 0xc]
push esi
xor esi, esi
cmp ebx, 0x40
jae 0x4018a4
push 0xd
call dword [sym.imp.KERNEL32.dll_SetLastError]
pop esi
xor eax, eax
pop ebx
mov esp, ebp
pop ebp
ret 0x20
mov ecx, dword [ebp + 8]
mov eax, 0x5a4d
cmp word [ecx], ax
je 0x4018c6
push 0xc1
call dword [sym.imp.KERNEL32.dll_SetLastError]
pop esi
xor eax, eax
pop ebx
mov esp, ebp
pop ebp
ret 0x20
mov edx, dword [ecx + 0x3c]
mov dword [ebp - 4], edx
lea eax, [edx + 0xf8]
cmp ebx, eax
jb 0x401892
cmp dword [edx + ecx], 0x4550
lea ebx, [edx + ecx]
jne 0x4018b1
mov eax, 0x14c
cmp word [ebx + 4], ax
jne 0x4018b1
test byte [ebx + 0x38], 1
jne 0x4018b1
movzx eax, word [ebx + 0x14]
push edi
movzx edi, word [ebx + 6]
test edi, edi
je 0x401920
lea ecx, [ebx + 0x24]
add ecx, eax
mov edx, dword [ecx + 4]
mov eax, dword [ecx]
test edx, edx
jne 0x401913
add eax, dword [ebx + 0x38]
jmp 0x401915
add eax, edx
cmp eax, esi
cmova esi, eax
add ecx, 0x28
dec edi
jne 0x401905
lea eax, [ebp - 0x28]
push eax
call dword [sym.imp.KERNEL32.dll_GetNativeSystemInfo]
mov ecx, dword [ebp - 0x24]
lea edx, [ecx - 1]
lea edi, [ecx - 1]
not edx
add edi, dword [ebx + 0x50]
lea eax, [ecx - 1]
add eax, esi
and edi, edx
and eax, edx
cmp edi, eax
je 0x40195b
push 0xc1
call dword [sym.imp.KERNEL32.dll_SetLastError]
pop edi
pop esi
xor eax, eax
pop ebx
mov esp, ebp
pop ebp
ret 0x20
mov esi, dword [ebp + 0x24]
push esi
push 4
push 0x3000
push edi
push dword [ebx + 0x34]
call dword [ebp + 0x10]
mov ebx, eax
test ebx, ebx
jne 0x401986
push esi
push 4
push 0x3000
push edi
push eax
call dword [ebp + 0x10]
mov ebx, eax
test ebx, ebx
je 0x4019a8
push 0x40
push 8
call dword [sym.imp.KERNEL32.dll_GetProcessHeap]
push eax
call dword [sym.imp.KERNEL32.dll_HeapAlloc]
mov edi, eax
test edi, edi
jne 0x4019bb
push esi
push 0x8000
push eax
push ebx
call dword [ebp + 0x14]
push 0xe
call dword [sym.imp.KERNEL32.dll_SetLastError]
pop edi
pop esi
xor eax, eax
pop ebx
mov esp, ebp
pop ebp
ret 0x20
mov ecx, dword [ebp + 8]
mov edx, dword [ebp - 4]
mov dword [edi + 4], ebx
movzx eax, word [edx + ecx + 0x16]
shr eax, 0xd
and eax, 1
mov dword [edi + 0x34], esi
mov dword [edi + 0x14], eax
mov eax, dword [ebp + 0x10]
mov dword [edi + 0x1c], eax
mov eax, dword [ebp + 0x14]
mov dword [edi + 0x20], eax
mov eax, dword [ebp + 0x18]
mov dword [edi + 0x24], eax
mov eax, dword [ebp + 0x1c]
mov dword [edi + 0x28], eax
mov eax, dword [ebp + 0x20]
mov dword [edi + 0x2c], eax
mov eax, dword [ebp - 0x24]
mov dword [edi + 0x3c], eax
push dword [edx + ecx + 0x54]
push dword [ebp + 0xc]
call fcn.00401330
test eax, eax
je 0x401abd
mov ecx, dword [ebp + 8]
mov eax, dword [ebp - 4]
push esi
push 4
push 0x1000
push dword [eax + ecx + 0x54]
push ebx
call dword [ebp + 0x10]
mov ecx, dword [ebp - 4]
mov esi, eax
mov eax, dword [ebp + 8]
push dword [ecx + eax + 0x54]
push eax
push esi
call fcn.00437e40
mov edx, dword [ebp + 8]
add esp, 0xc
mov eax, dword [edx + 0x3c]
push edi
push dword [ebp + 0xc]
add eax, esi
mov dword [edi], eax
push edx
mov dword [eax + 0x34], ebx
call fcn.00401360
test eax, eax
jne 0x401abd
mov eax, dword [edi]
mov ecx, dword [ebp + 8]
mov edx, dword [ebp - 4]
mov eax, dword [eax + 0x34]
sub eax, dword [edx + ecx + 0x34]
je 0x401a71
push eax
push edi
call fcn.004014f0
mov dword [edi + 0x18], eax
jmp 0x401a78
mov dword [edi + 0x18], 1
push edi
call fcn.004011c0
test eax, eax
je 0x401abd
push edi
call fcn.00401440
test eax, eax
jne 0x401abd
push edi
call fcn.004013f0
test eax, eax
je 0x401abd
mov eax, dword [edi]
mov eax, dword [eax + 0x28]
test eax, eax
je 0x401aee
add eax, ebx
cmp dword [edi + 0x14], 0
je 0x401ae0
push 0
push 1
push ebx
call eax
test eax, eax
jne 0x401ace
push 0x45a
call dword [sym.imp.KERNEL32.dll_SetLastError]
push edi
call fcn.00401660
pop edi
pop esi
xor eax, eax
pop ebx
mov esp, ebp
pop ebp
ret 0x20
mov dword [edi + 0x10], 1
mov eax, edi
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret 0x20
mov dword [edi + 0x38], eax
mov eax, edi
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret 0x20
mov dword [edi + 0x38], 0
mov eax, edi
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret 0x20