Function at 0x40433c
Capabilities:
Accept command line arguments
Check os version
Copy file
Delete file
Get common file path
Get file system object information
Set current directory
Set environment variable
Shutdown system
Terminate process

Disassembly:
push ebp
mov ebp, esp
push edi
push esi
push ebx
sub esp, 0x1ac
mov dword [esp], 0x8001
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
push esi
call dword [sym.imp.KERNEL32.dll_GetVersion]
and eax, 0xbfffffff
mov dword [0x42c4a0], eax
cmp ax, 6
je 0x404387
mov dword [esp], 0
call fcn.00408b7f
push ebx
test eax, eax
je 0x404387
mov dword [esp], 0xc00
call eax
push ecx
mov ebx, str.UXTHEME
mov dword [esp], ebx
call fcn.00408af4
push eax
mov dword [esp], ebx
call dword [sym.imp.KERNEL32.dll_lstrlenA]
lea ebx, [ebx + eax + 1]
push edx
cmp byte [ebx], 0
jne 0x40438c
mov dword [esp], 0xa
call fcn.00408b7f
push ebx
mov dword [esp], 8
call fcn.00408b7f
push esi
mov dword [0x42c4a4], eax
mov dword [esp], 6
call fcn.00408b7f
push edi
test eax, eax
je 0x4043f0
mov dword [esp], 0x1e
call eax
push ecx
test eax, eax
je 0x4043f0
or dword [0x42c4a0], 0x40000000
call dword [sym.imp.COMCTL32.DLL_InitCommonControls]
mov dword [esp], 0
call dword [sym.imp.ole32.dll_OleInitialize]
push edi
mov dword [0x42c418], eax
lea eax, [ebp - 0x178]
mov dword [esp + 0x10], 0
mov dword [esp + 0xc], 0x160
mov dword [esp + 8], eax
mov dword [esp + 4], 0
mov dword [esp], 0x40b31d
call dword [sym.imp.SHELL32.dll_SHGetFileInfoA]
sub esp, 0x14
mov dword [esp + 4], str.NSIS_Error
mov dword [esp], 0x42c4c0
call fcn.004080a0
push eax
push eax
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
mov ecx, dword [0x40b694]
add ecx, 0x5000
mov dword [esp + 4], eax
mov dword [esp], ecx
mov dword [ebp - 0x18c], ecx
call fcn.004080a0
push eax
push eax
mov dword [esp], 0
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
mov dword [0x42c4ac], eax
mov eax, dword [0x40b694]
push edx
movsx eax, byte [eax + 0x5000]
cmp al, 0x22
jne 0x4044a8
mov ecx, dword [0x40b694]
lea edx, [ecx + 0x5001]
jmp 0x4044b3
mov edx, dword [ebp - 0x18c]
mov eax, 0x20
mov dword [esp], edx
xor edi, edi
mov dword [esp + 4], eax
call fcn.00407961
push ebx
push ebx
mov dword [esp], eax
call dword [sym.imp.USER32.dll_CharNextA]
mov dword [ebp - 0x190], eax
push esi
cmp byte [eax], 0
je 0x404570
movsx edx, byte [eax]
cmp dl, 0x20
jne 0x4044e7
inc eax
jmp 0x4044dc
cmp dl, 0x22
jne 0x4044ef
inc eax
jmp 0x4044f4
mov edx, 0x20
cmp byte [eax], 0x2f
jne 0x404553
cmp byte [eax + 1], 0x53
lea ebx, [eax + 1]
jne 0x404512
test byte [eax + 2], 0xdf
jne 0x404512
mov dword [0x42c400], 1
cmp dword [eax + 1], 0x4352434e
jne 0x404527
test byte [eax + 5], 0xdf
mov ecx, 4
cmove edi, ecx
cmp dword [eax - 1], 0x3d442f20
jne 0x404551
mov byte [eax - 1], 0
add eax, 3
mov dword [esp + 4], eax
mov eax, dword [0x40b694]
add eax, 0x5400
mov dword [esp], eax
call fcn.004080a0
push ecx
push ecx
jmp 0x404570
mov eax, ebx
mov dword [esp + 4], edx
mov dword [esp], eax
call fcn.00407961
push edx
push edx
cmp byte [eax], 0x22
jne 0x4044d3
inc eax
jmp 0x4044d3
mov eax, dword [0x40b694]
mov dword [esp], 0x400
mov esi, dword [sym.imp.KERNEL32.dll_GetTempPathA]
lea ebx, [eax + 0x6400]
mov dword [esp + 4], ebx
call esi
push eax
push eax
call fcn.0040427c
test eax, eax
je 0x4045c7
mov eax, dword [0x40b694]
add eax, 0x6000
mov dword [esp], eax
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push edx
mov dword [esp], edi
xor edi, edi
call fcn.00403eb4
mov esi, eax
push ecx
test eax, eax
jne 0x404892
jmp 0x404651
mov dword [esp + 4], 0x3fb
mov dword [esp], ebx
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push eax
push eax
mov dword [esp + 4], str.Temp
mov dword [esp], ebx
call sub.KERNEL32.dll_lstrcatA
push eax
push eax
call fcn.0040427c
test eax, eax
jne 0x404599
mov dword [esp + 4], ebx
mov dword [esp], 0x3fc
call esi
push esi
push esi
mov dword [esp + 4], 0x40b32f
mov dword [esp], ebx
call sub.KERNEL32.dll_lstrcatA
mov esi, dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableA]
push eax
push eax
mov dword [esp + 4], ebx
mov dword [esp], str.TEMP
call esi
push eax
push eax
mov dword [esp + 4], ebx
mov dword [esp], 0x40b338
call esi
push eax
push eax
call fcn.0040427c
test eax, eax
jne 0x404599
mov esi, str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
jmp 0x404890
cmp dword [0x42c488], 0
je 0x40487d
mov eax, dword [ebp - 0x18c]
mov dword [esp + 4], 0
mov dword [esp], eax
call fcn.00407961
push ecx
push ecx
cmp dword [ebp - 0x18c], eax
ja 0x4046db
cmp dword [eax], 0x3d3f5f20
je 0x404689
dec eax
jmp 0x404676
lea ebx, [eax + 4]
mov byte [eax], 0
mov dword [esp], ebx
call fcn.004087a1
push edx
test eax, eax
jne 0x4046a6
mov esi, str.Error_launching_installer
jmp 0x404890
mov eax, dword [0x40b694]
mov dword [esp + 4], ebx
add eax, 0x5400
mov dword [esp], eax
call fcn.004080a0
push eax
push eax
mov eax, dword [0x40b694]
add eax, 0x5800
mov dword [esp + 4], ebx
mov dword [esp], eax
call fcn.004080a0
push eax
push eax
jmp 0x40487d
call fcn.00408bcb
mov dword [esp + 4], str.nsu
mov dword [esp], ebx
mov esi, eax
call sub.KERNEL32.dll_lstrcatA
push eax
push eax
test esi, esi
je 0x40470a
mov dword [esp + 4], 0x40b341
mov dword [esp], ebx
call sub.KERNEL32.dll_lstrcatA
push edi
push edi
mov dword [esp + 4], str..tmp
mov dword [esp], ebx
call sub.KERNEL32.dll_lstrcatA
mov eax, dword [0x40b694]
push edx
push edx
lea edi, [eax + 0x5c00]
mov dword [esp + 4], edi
mov dword [esp], ebx
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
push ecx
push ecx
test eax, eax
je 0x40469c
mov dword [esp], ebx
test esi, esi
je 0x40474c
call fcn.00407760
jmp 0x404751
call fcn.004077f4
push eax
mov dword [esp], ebx
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryA]
push eax
mov eax, dword [0x40b694]
cmp byte [eax + 0x5400], 0
jne 0x40477d
add eax, 0x5400
mov dword [esp + 4], edi
mov dword [esp], eax
call fcn.004080a0
push eax
push eax
mov eax, dword [ebp - 0x190]
mov edi, 0x1a
mov esi, str.Error_launching_installer
mov dword [esp + 4], eax
mov eax, dword [0x40b694]
mov dword [esp], eax
call fcn.004080a0
push eax
push eax
mov eax, dword [0x40b694]
mov word [eax + 0x400], 0x41
mov eax, dword [0x42c420]
mov eax, dword [eax + 0x120]
mov dword [esp], 0x428520
mov dword [esp + 4], eax
call fcn.004081e2
push ecx
push ecx
mov dword [esp], 0x428520
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push eax
test esi, esi
je 0x404857
mov eax, dword [0x40b694]
mov dword [esp + 8], 1
mov dword [esp + 4], 0x428520
add eax, 0x6c00
mov dword [esp], eax
call dword [sym.imp.KERNEL32.dll_CopyFileA]
sub esp, 0xc
test eax, eax
je 0x404857
mov dword [esp + 4], 0
mov dword [esp], 0x428520
call fcn.00408724
push eax
push eax
mov eax, dword [0x42c420]
mov eax, dword [eax + 0x124]
mov dword [esp], 0x428520
mov dword [esp + 4], eax
call fcn.004081e2
push eax
push eax
mov dword [esp], 0x428520
call fcn.00407822
push edx
test eax, eax
je 0x404857
mov dword [esp], eax
xor esi, esi
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push eax
mov eax, dword [0x40b694]
inc byte [eax + 0x400]
dec edi
jne 0x4047ae
mov dword [esp + 4], 0
mov dword [esp], ebx
call fcn.00408724
push edi
push edi
jmp 0x404890
mov dword [0x42c40c], 0xffffffff
call fcn.00406168
mov edi, eax
jmp 0x404892
xor edi, edi
call fcn.004042d7
call dword [sym.imp.ole32.dll_OleUninitialize]
test esi, esi
mov ebx, dword [sym.imp.KERNEL32.dll_ExitProcess]
je 0x4048c5
mov dword [esp], esi
mov dword [esp + 4], 0x200010
call fcn.004078f5
push esi
push esi
mov dword [esp], 2
jmp 0x4049e5
cmp dword [0x42c3f4], 0
je 0x4049d7
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
lea edx, [ebp - 0x17c]
mov dword [esp + 4], 0x28
mov dword [esp + 8], edx
mov dword [esp], eax
call dword [sym.imp.ADVAPI32.dll_OpenProcessToken]
sub esp, 0xc
test eax, eax
je 0x40496c
lea eax, [ebp - 0x174]
mov dword [esp + 4], str.SeShutdownPrivilege
lea esi, [ebp - 0x178]
mov dword [esp + 8], eax
mov dword [esp], 0
call dword [sym.imp.ADVAPI32.dll_LookupPrivilegeValueA]
mov eax, dword [ebp - 0x17c]
mov dword [ebp - 0x178], 1
mov dword [ebp - 0x16c], 2
sub esp, 0xc
mov dword [esp + 0x14], 0
mov dword [esp + 0x10], 0
mov dword [esp + 0xc], 0
mov dword [esp + 8], esi
mov dword [esp + 4], 0
mov dword [esp], eax
call dword [sym.imp.ADVAPI32.dll_AdjustTokenPrivileges]
sub esp, 0x18
mov dword [esp], 4
call fcn.00408b7f
push ecx
test eax, eax
jne 0x40499a
mov dword [esp + 4], 0x80040002
mov dword [esp], 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
push edx
push edx
test eax, eax
je 0x4049ca
jmp 0x4049d7
mov dword [esp + 0x10], 0x80040002
mov dword [esp + 0xc], 0x25
mov dword [esp + 8], 0
mov dword [esp + 4], 0
mov dword [esp], 0
call eax
sub esp, 0x14
test eax, eax
jne 0x40497d
mov dword [esp], 9
call fcn.0040391f
push eax
mov eax, dword [0x42c40c]
cmp eax, 0xffffffff
cmovne edi, eax
mov dword [esp], edi
call ebx
nop