Function at 0x40448a
Capabilities:
Accept command line arguments
Copy file
Delete file
Get common file path
Get file attributes
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
lea esi, [ebp - 0x3e8]
push ebx
sub esp, 0x42c
mov dword [esp], 0x8001
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
mov ebx, dword [sym.imp.KERNEL32.dll_GetVersionExW]
mov dword [ebp - 0x3d4], 0
push edi
mov dword [ebp - 0x2d4], 0
mov dword [ebp - 0x2d0], 0
mov dword [ebp - 0x3e8], 0x11c
mov dword [esp], esi
call ebx
push edx
test eax, eax
jne 0x404516
mov dword [esp], esi
mov dword [ebp - 0x3e8], 0x114
call ebx
xor eax, eax
cmp word [ebp - 0x3d4], 0x53
mov byte [ebp - 0x2ce], 4
push esi
jne 0x40450f
mov ax, word [ebp - 0x3ba]
sub eax, 0x30
mov word [ebp - 0x2d4], ax
mov ecx, dword [ebp - 0x3e4]
cmp ecx, 9
ja 0x40452b
and dword [ebp - 0x3dc], 0xffff
mov eax, dword [ebp - 0x3dc]
shl ecx, 8
mov dword [0x431558], eax
movzx eax, byte [ebp - 0x2d4]
shl eax, 8
mov edx, eax
movzx eax, byte [ebp - 0x2ce]
or eax, edx
movzx edx, byte [ebp - 0x3e0]
movzx eax, ax
or edx, ecx
shl edx, 0x10
or eax, edx
mov dword [0x43155c], eax
shr eax, 0x10
cmp ax, 0x600
je 0x404588
mov dword [esp], 0
call fcn.00408789
push ebx
test eax, eax
je 0x404588
mov dword [esp], 0xc00
call eax
push ecx
mov ebx, str.UXTHEME
mov dword [esp], ebx
call fcn.004086f9
push edi
mov dword [esp], ebx
call dword [sym.imp.KERNEL32.dll_lstrlenA]
lea ebx, [ebx + eax + 1]
push edx
cmp byte [ebx], 0
jne 0x40458d
mov dword [esp], 0xc
call fcn.00408789
push ecx
mov dword [esp], 0xa
call fcn.00408789
push ebx
mov dword [0x431604], eax
mov dword [esp], 8
call fcn.00408789
push esi
test eax, eax
je 0x4045ee
mov dword [esp], 0x1e
call eax
push edx
test eax, eax
je 0x4045ee
or byte [0x43155c], 0x80
call dword [sym.imp.COMCTL32.DLL_InitCommonControls]
mov dword [esp], 0
call dword [sym.imp.ole32.dll_OleInitialize]
push edx
mov dword [0x431560], eax
lea eax, [ebp - 0x2cc]
mov dword [esp + 0x10], 0
mov dword [esp + 0xc], 0x2b4
mov dword [esp + 8], eax
mov dword [esp + 4], 0
mov dword [esp], 0x40c43a
call dword [sym.imp.SHELL32.dll_SHGetFileInfoW]
sub esp, 0x14
mov dword [esp + 4], str.NSIS_Error
mov dword [esp], 0x431620
call fcn.00408467
push ecx
push ecx
call dword [sym.imp.KERNEL32.dll_GetCommandLineW]
mov ebx, dword [0x40c8f4]
lea ecx, [ebx + 0xa000]
mov dword [esp + 4], eax
mov dword [esp], ecx
mov dword [ebp - 0x400], ecx
call fcn.00408467
push esi
push esi
mov dword [esp], 0
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
lea edx, [ebx + 0xa002]
push edi
mov dword [0x43160c], eax
movzx eax, word [ebx + 0xa000]
cmp ax, 0x22
je 0x4046a6
lea edx, [ebx + 0xa000]
mov eax, 0x20
mov dword [esp], edx
mov dword [esp + 4], eax
call fcn.00407cf9
push esi
push esi
xor esi, esi
mov dword [esp], eax
call dword [sym.imp.USER32.dll_CharNextW]
mov dword [ebp - 0x404], eax
push edi
cmp word [eax], 0
je 0x404783
movzx edx, word [eax]
cmp dx, 0x20
jne 0x4046de
add eax, 2
jmp 0x4046d0
cmp dx, 0x22
jne 0x4046e9
add eax, 2
jmp 0x4046ee
mov edx, 0x20
cmp word [eax], 0x2f
jne 0x404763
cmp word [eax + 2], 0x53
lea edi, [eax + 2]
jne 0x404710
test word [eax + 4], 0xffdf
jne 0x404710
mov dword [0x431540], 1
cmp dword [eax + 6], 0x430052
jne 0x404730
cmp dword [eax + 2], 0x43004e
jne 0x404730
test word [eax + 0xa], 0xffdf
mov ecx, 4
cmove esi, ecx
cmp dword [eax + 2], 0x3d0044
jne 0x404761
cmp dword [eax - 2], 0x2f0020
jne 0x404761
mov word [eax - 2], 0
add eax, 6
mov dword [esp + 4], eax
lea eax, [ebx + 0xa800]
mov dword [esp], eax
call fcn.00408467
push ecx
push ecx
jmp 0x404783
mov eax, edi
mov dword [esp + 4], edx
mov dword [esp], eax
call fcn.00407cf9
push edx
push edx
cmp word [eax], 0x22
jne 0x4046c6
add eax, 2
jmp 0x4046c6
mov eax, dword [sym.imp.KERNEL32.dll_GetTempPathW]
lea edi, [ebx + 0xc800]
mov dword [esp], 0x400
mov dword [esp + 4], edi
mov dword [ebp - 0x3fc], eax
call eax
push eax
push eax
call fcn.004043e8
test eax, eax
je 0x4047da
lea eax, [ebx + 0xc000]
mov dword [esp], eax
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
push edx
mov dword [esp], esi
xor esi, esi
call fcn.004040c4
mov dword [ebp - 0x3fc], eax
push ecx
test eax, eax
jne 0x404b35
jmp 0x40487b
mov dword [esp + 4], 0x3fb
mov dword [esp], edi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryW]
push eax
push eax
mov dword [esp + 4], str.Temp
mov dword [esp], edi
call sub.KERNEL32.dll_lstrcatW
push eax
push eax
call fcn.004043e8
test eax, eax
jne 0x4047ac
mov dword [esp + 4], edi
mov eax, dword [ebp - 0x3fc]
mov dword [esp], 0x3fc
call eax
push eax
push eax
mov dword [esp + 4], 0x40c45e
mov dword [esp], edi
call sub.KERNEL32.dll_lstrcatW
mov edx, dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableW]
push eax
push eax
mov dword [ebp - 0x3fc], edx
mov dword [esp + 4], edi
mov dword [esp], str.TEMP
call edx
mov edx, dword [ebp - 0x3fc]
push eax
push eax
mov dword [esp + 4], edi
mov dword [esp], 0x40c470
call edx
push eax
push eax
call fcn.004043e8
test eax, eax
jne 0x4047ac
mov dword [ebp - 0x3fc], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
jmp 0x404b33
cmp dword [0x4315e8], 0
je 0x404b20
mov eax, dword [ebp - 0x400]
mov dword [esp + 4], 0
mov dword [esp], eax
call fcn.00407cf9
push ecx
push ecx
cmp dword [ebp - 0x400], eax
ja 0x40490f
cmp dword [eax + 4], 0x3d003f
je 0x4048b6
sub eax, 2
jmp 0x4048a0
cmp dword [eax], 0x5f0020
jne 0x4048b1
lea esi, [eax + 8]
mov word [eax], 0
mov dword [esp], esi
call fcn.00408645
push edx
test eax, eax
jne 0x4048e2
mov dword [ebp - 0x3fc], str.Error_launching_installer
jmp 0x404b33
lea eax, [ebx + 0xa800]
mov dword [esp + 4], esi
mov dword [esp], eax
call fcn.00408467
lea eax, [ebx + 0xb000]
push edi
push edi
mov dword [esp + 4], esi
mov dword [esp], eax
call fcn.00408467
push eax
push eax
jmp 0x404b20
call fcn.004087d5
mov dword [esp], edi
lea esi, [ebx + 0x2800]
mov dword [ebp - 0x410], eax
call sub.KERNEL32.dll_lstrlenW
mov dword [ebp - 0x400], eax
lea eax, [ebx + 0x3000]
push edx
mov dword [ebp - 0x408], eax
mov eax, dword [ebp - 0x404]
mov dword [esp], ebx
mov dword [esp + 4], eax
call fcn.00408467
push ecx
push ecx
cmp word [ebx + 0xa800], 0
jne 0x404973
lea eax, [ebx + 0xb800]
mov dword [esp + 4], eax
lea eax, [ebx + 0xa800]
mov dword [esp], eax
call fcn.00408467
push eax
push eax
mov word [ebp - 0x404], 1
mov eax, dword [ebp - 0x400]
lea eax, [ebx + eax*2 + 0xc800]
mov dword [ebp - 0x40c], eax
cmp word [ebp - 0x404], 0
je 0x4048d3
movzx eax, word [ebp - 0x404]
mov dword [ebp - 0x400], 0
mov dword [ebp - 0x414], eax
mov eax, dword [ebp - 0x414]
mov dword [esp + 4], str.nsu_X.tmp
mov dword [esp + 8], eax
mov eax, dword [ebp - 0x40c]
mov dword [esp], eax
call dword [sym.imp.USER32.dll_wsprintfW]
mov eax, dword [0x431580]
mov eax, dword [eax + 0x120]
mov dword [esp], esi
mov dword [esp + 4], eax
call fcn.004087fb
cmp dword [ebp - 0x410], 0
push ecx
push ecx
mov dword [esp], edi
je 0x404a01
call fcn.00407b28
jmp 0x404a06
call fcn.00407b8c
push edx
test eax, eax
je 0x404a5f
mov dword [esp], esi
call dword [sym.imp.KERNEL32.dll_GetFileAttributesW]
bt eax, 0xa
push ecx
jb 0x404b14
mov dword [esp], esi
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
push edx
test eax, eax
je 0x404b14
mov dword [esp + 4], 1
mov dword [esp], edi
call fcn.00408dcc
cmp dword [ebp - 0x400], 0
push eax
push eax
jne 0x404b14
mov dword [ebp - 0x400], 1
jmp 0x4049b4
mov dword [esp], edi
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryW]
push ecx
mov dword [esp + 4], 0
mov dword [esp], edi
call fcn.00408d87
push eax
push eax
lea eax, [ebx + 0xd800]
mov dword [esp + 8], 1
mov dword [esp + 4], esi
mov dword [esp], eax
call dword [sym.imp.KERNEL32.dll_CopyFileW]
sub esp, 0xc
test eax, eax
je 0x4048d3
mov dword [esp + 4], 0
mov dword [esp], esi
call fcn.00408d87
push eax
push eax
mov eax, dword [0x431580]
mov eax, dword [eax + 0x124]
mov dword [esp + 4], eax
mov eax, dword [ebp - 0x408]
mov dword [esp], eax
call fcn.004087fb
push eax
push eax
mov eax, dword [ebp - 0x408]
mov dword [esp], eax
call fcn.00407bba
push edx
test eax, eax
je 0x404af1
mov dword [esp], eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push ecx
jmp 0x404b33
cmp dword [ebp - 0x400], 0
jne 0x4048d3
mov dword [esp], esi
call fcn.0040860d
push edx
test eax, eax
je 0x404a50
jmp 0x4048d3
inc word [ebp - 0x404]
jmp 0x40498f
mov dword [0x43154c], 0xffffffff
call fcn.00406508
mov esi, eax
jmp 0x404b35
xor esi, esi
call fcn.00404443
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [ebp - 0x3fc], 0
mov ebx, dword [sym.imp.KERNEL32.dll_ExitProcess]
je 0x404b73
mov eax, dword [ebp - 0x3fc]
mov dword [esp + 4], 0x200010
mov dword [esp], eax
call fcn.00407c8d
push esi
push esi
mov dword [esp], 2
jmp 0x404c93
cmp dword [0x431534], 0
je 0x404c85
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
lea edx, [ebp - 0x3ec]
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 0x404c1a
lea eax, [ebp - 0x2c8]
mov dword [esp + 4], str.SeShutdownPrivilege
lea edi, [ebp - 0x2cc]
mov dword [esp + 8], eax
mov dword [esp], 0
call dword [sym.imp.ADVAPI32.dll_LookupPrivilegeValueW]
mov eax, dword [ebp - 0x3ec]
mov dword [ebp - 0x2cc], 1
mov dword [ebp - 0x2c0], 2
sub esp, 0xc
mov dword [esp + 0x14], 0
mov dword [esp + 0x10], 0
mov dword [esp + 0xc], 0
mov dword [esp + 8], edi
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.00408789
push ecx
test eax, eax
jne 0x404c48
mov dword [esp + 4], 0x80040002
mov dword [esp], 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
push edx
push edx
test eax, eax
je 0x404c78
jmp 0x404c85
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 0x404c2b
mov dword [esp], 9
call fcn.00403c68
push eax
mov eax, dword [0x43154c]
cmp eax, 0xffffffff
cmovne esi, eax
mov dword [esp], esi
call ebx
nop
nop
nop