Function at 0x4030f1
Capabilities:
Accept command line arguments
Check os version
Copy file
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
push edi
xor ebx, ebx
push 0x8001
mov dword [esp + 0x1c], ebx
mov dword [esp + 0x14], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
xor esi, esi
mov byte [esp + 0x18], 0x20
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
call dword [sym.imp.KERNEL32.dll_GetVersion]
cmp ax, 6
je 0x403138
push ebx
call fcn.00405f11
cmp eax, ebx
je 0x403138
push 0xc00
call eax
push str.UXTHEME
call fcn.00405ea7
push str.USERENV
call fcn.00405ea7
push str.SETUPAPI
call fcn.00405ea7
push 0xd
call fcn.00405f11
push 0xb
call fcn.00405f11
mov dword [0x7a2784], eax
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
mov dword [0x7a2838], eax
push ebx
lea eax, [esp + 0x34]
push 0x160
push eax
push ebx
push 0x79dd48
call dword [sym.imp.SHELL32.dll_SHGetFileInfoA]
push str.NSIS_Error
push 0x7a1f80
call fcn.00405b85
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
mov ebp, 0x7a8000
push eax
push ebp
call fcn.00405b85
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x7a8000], 0x22
mov dword [0x7a2780], eax
mov eax, ebp
jne 0x4031d4
mov byte [esp + 0x14], 0x22
mov eax, 0x7a8001
push dword [esp + 0x14]
push eax
call fcn.004056a3
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov dword [esp + 0x1c], eax
jmp 0x40324e
cmp cl, 0x20
jne 0x4031f6
inc eax
cmp byte [eax], 0x20
je 0x4031f0
cmp byte [eax], 0x22
mov byte [esp + 0x14], 0x20
jne 0x403206
inc eax
mov byte [esp + 0x14], 0x22
cmp byte [eax], 0x2f
jne 0x40323e
inc eax
cmp byte [eax], 0x53
jne 0x40321f
mov cl, byte [eax + 1]
or cl, 0x20
cmp cl, 0x20
jne 0x40321f
or esi, 2
cmp dword [eax], 0x4352434e
jne 0x403235
mov cl, byte [eax + 4]
or cl, 0x20
cmp cl, 0x20
jne 0x403235
or esi, 4
cmp dword [eax - 2], 0x3d442f20
je 0x403256
push dword [esp + 0x14]
push eax
call fcn.004056a3
cmp byte [eax], 0x22
jne 0x40324e
inc eax
mov cl, byte [eax]
cmp cl, bl
jne 0x4031eb
jmp 0x403267
mov dword [eax - 2], ebx
add eax, 2
push eax
push 0x7a8400
call fcn.00405b85
mov edi, 0x7a9400
push edi
push 0x400
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
call fcn.004030c0
test eax, eax
jne 0x4032a1
push 0x3fb
push edi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push edi
call sub.KERNEL32.dll_lstrcatA
call fcn.004030c0
test eax, eax
je 0x40331f
push 0x7a9000
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push esi
call fcn.00402c38
cmp eax, ebx
mov dword [esp + 0x10], eax
jne 0x40331f
cmp dword [0x7a279c], ebx
je 0x40330f
push ebx
push ebp
call fcn.004056a3
mov esi, eax
jmp 0x4032d6
cmp dword [esi], 0x3d3f5f20
je 0x4032da
dec esi
cmp esi, ebp
jae 0x4032cd
cmp esi, ebp
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x40334a
mov byte [esi], bl
add esi, 4
push esi
call fcn.00405759
test eax, eax
je 0x40331f
push esi
push 0x7a8400
call fcn.00405b85
push esi
push 0x7a8800
call fcn.00405b85
mov dword [esp + 0x10], ebx
or dword [0x7a282c], 0xffffffff
call fcn.004035d8
mov dword [esp + 0x18], eax
call fcn.004034fe
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebx
je 0x403443
push 0x200010
push dword [esp + 0x14]
call fcn.00405446
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
call fcn.004053cd
push str.nsu
push edi
mov esi, eax
call sub.KERNEL32.dll_lstrcatA
cmp esi, ebx
je 0x40336b
push 0x409148
push edi
call sub.KERNEL32.dll_lstrcatA
push str..tmp
push edi
call sub.KERNEL32.dll_lstrcatA
mov ebp, 0x7a8c00
push ebp
push edi
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x40331f
cmp esi, ebx
push edi
je 0x403393
call fcn.00405333
jmp 0x403398
call fcn.004053b0
push edi
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryA]
cmp byte [0x7a8400], bl
jne 0x4033b2
push ebp
push 0x7a8400
call fcn.00405b85
push dword [esp + 0x1c]
push section..ndata
call fcn.00405b85
push 0x1a
mov word [0x7a3400], 0x41
pop ebp
mov esi, 0x79d948
mov eax, dword [0x7a2790]
push dword [eax + 0x120]
push esi
call fcn.00405ba7
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x10], ebx
je 0x40342e
push 1
push esi
push 0x7a9c00
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x40342e
push ebx
push esi
call fcn.004058d3
mov eax, dword [0x7a2790]
push dword [eax + 0x124]
push esi
call fcn.00405ba7
push esi
call fcn.004053e5
cmp eax, ebx
je 0x40342e
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebx
inc byte [0x7a3400]
dec ebp
jne 0x4033d1
push ebx
push edi
call fcn.004058d3
jmp 0x40331f
cmp dword [0x7a2814], ebx
je 0x4034e6
push 5
call fcn.00405f11
push 6
mov ebp, eax
call fcn.00405f11
push 7
mov esi, eax
call fcn.00405f11
cmp ebp, ebx
mov edi, eax
je 0x4034b6
cmp esi, ebx
je 0x4034b6
cmp edi, ebx
je 0x4034b6
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebp
test eax, eax
je 0x4034b6
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 8
call fcn.00405f11
cmp eax, ebx
mov esi, 0x80040002
je 0x4034d2
push esi
push 0x25
push ebx
push ebx
push ebx
call eax
test eax, eax
je 0x4034df
push esi
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x4034e6
push 9
call fcn.0040140b
mov eax, dword [0x7a282c]
cmp eax, 0xffffffff
je 0x4034f4
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
call dword [sym.imp.KERNEL32.dll_ExitProcess]