Function at 0x403268
Capabilities:
Accept command line arguments
Copy file
Create directory
Delete file
Get common file path
Get file system object information
Set current directory
Shutdown system
Terminate process

Disassembly:
sub esp, 0x180
push ebx
push ebp
push esi
xor ebx, ebx
push edi
mov dword [esp + 0x18], ebx
mov dword [esp + 0x10], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
xor esi, esi
mov byte [esp + 0x14], 0x20
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push RegEnumValueA
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
push 8
mov dword [0x7c5834], eax
call fcn.00405d97
mov dword [0x7c5784], eax
push ebx
lea eax, [esp + 0x34]
push 0x160
push eax
push ebx
push 0x7a8540
call dword [sym.imp.SHELL32.dll_SHGetFileInfoA]
push str.NSIS_Error
push 0x7c1780
call fcn.00405a79
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
mov edi, 0x7ee000
push eax
push edi
call fcn.00405a79
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x7ee000], 0x22
mov dword [0x7c5780], eax
mov eax, edi
jne 0x403309
mov byte [esp + 0x14], 0x22
mov eax, 0x7ee001
push dword [esp + 0x14]
push eax
call fcn.00405597
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov dword [esp + 0x1c], eax
jmp 0x403383
cmp cl, 0x20
jne 0x40332b
inc eax
cmp byte [eax], 0x20
je 0x403325
cmp byte [eax], 0x22
mov byte [esp + 0x14], 0x20
jne 0x40333b
inc eax
mov byte [esp + 0x14], 0x22
cmp byte [eax], 0x2f
jne 0x403373
inc eax
cmp byte [eax], 0x53
jne 0x403354
mov cl, byte [eax + 1]
or cl, 0x20
cmp cl, 0x20
jne 0x403354
or esi, 2
cmp dword [eax], 0x4352434e
jne 0x40336a
mov cl, byte [eax + 4]
or cl, 0x20
cmp cl, 0x20
jne 0x40336a
or esi, 4
cmp dword [eax - 2], 0x3d442f20
je 0x40338b
push dword [esp + 0x14]
push eax
call fcn.00405597
cmp byte [eax], 0x22
jne 0x403383
inc eax
mov cl, byte [eax]
cmp cl, bl
jne 0x403320
jmp 0x40339c
mov dword [eax - 2], ebx
add eax, 2
push eax
push 0x7f0000
call fcn.00405a79
mov ebp, 0x7f8000
push ebp
push 0x2000
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
call fcn.00403234
test eax, eax
jne 0x4033d6
push 0x1ffb
push ebp
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push ebp
call sub.KERNEL32.dll_lstrcatA
call fcn.00403234
test eax, eax
je 0x403454
push 0x7f6000
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push esi
call fcn.00402be8
cmp eax, ebx
mov dword [esp + 0x10], eax
jne 0x403454
cmp dword [0x7c5798], ebx
je 0x403444
push ebx
push edi
call fcn.00405597
mov esi, eax
jmp 0x40340b
cmp dword [esi], 0x3d3f5f20
je 0x40340f
dec esi
cmp esi, edi
jae 0x403402
cmp esi, edi
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x40347f
mov byte [esi], bl
add esi, 4
push esi
call fcn.0040564d
test eax, eax
je 0x403454
push esi
push 0x7f0000
call fcn.00405a79
push esi
push 0x7f2000
call fcn.00405a79
mov dword [esp + 0x10], ebx
or dword [0x7c582c], 0xffffffff
call fcn.00403626
mov dword [esp + 0x18], eax
call fcn.004035e9
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebx
je 0x40354e
push 0x200010
push dword [esp + 0x14]
call fcn.00405347
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
push str.nsu.tmp
push ebp
call sub.KERNEL32.dll_lstrcatA
mov esi, 0x7f4000
push esi
push ebp
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x403454
push ebx
push ebp
call dword [sym.imp.KERNEL32.dll_CreateDirectoryA]
push ebp
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryA]
cmp byte [0x7f0000], bl
jne 0x4034bd
push esi
push 0x7f0000
call fcn.00405a79
push dword [esp + 0x1c]
push section..ndata
call fcn.00405a79
push 0x1a
mov word [0x7c8000], 0x41
pop edi
mov esi, 0x7a6540
mov eax, dword [0x7c578c]
push dword [eax + 0x120]
push esi
call fcn.00405a9b
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x10], ebx
je 0x403539
push 1
push esi
push 0x7fc000
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x403539
push ebx
push esi
call fcn.004057c7
mov eax, dword [0x7c578c]
push dword [eax + 0x124]
push esi
call fcn.00405a9b
push esi
call fcn.004052e6
cmp eax, ebx
je 0x403539
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebx
inc byte [0x7c8000]
dec edi
jne 0x4034dc
push ebx
push ebp
call fcn.004057c7
jmp 0x403454
cmp dword [0x7c5814], ebx
je 0x4035d1
push 3
call fcn.00405d97
push 4
mov ebp, eax
call fcn.00405d97
push 5
mov esi, eax
call fcn.00405d97
cmp ebp, ebx
mov edi, eax
je 0x4035bd
cmp esi, ebx
je 0x4035bd
cmp edi, ebx
je 0x4035bd
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebp
test eax, eax
je 0x4035bd
lea eax, [esp + 0x24]
push eax
push str.SeShutdownPrivilege
push ebx
call esi
push ebx
push ebx
lea eax, [esp + 0x28]
push ebx
push eax
push ebx
push dword [esp + 0x30]
mov dword [esp + 0x38], 1
mov dword [esp + 0x44], 2
call edi
push ebx
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x4035d1
push 9
call fcn.0040140b
mov eax, dword [0x7c582c]
cmp eax, 0xffffffff
je 0x4035df
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
call dword [sym.imp.KERNEL32.dll_ExitProcess]