Function at 0x40310e
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, 0x184
push ebx
push ebp
push esi
push edi
xor ebx, ebx
push 0x8001
mov dword [esp + 0x20], ebx
mov dword [esp + 0x14], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
mov dword [esp + 0x1c], ebx
mov byte [esp + 0x18], 0x20
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
call dword [sym.imp.KERNEL32.dll_GetVersion]
cmp ax, 6
je 0x403157
push ebx
call fcn.00405f3b
cmp eax, ebx
je 0x403157
push 0xc00
call eax
mov esi, str.UXTHEME
push esi
call fcn.00405ecd
push esi
call dword [sym.imp.KERNEL32.dll_lstrlenA]
lea esi, [esi + eax + 1]
cmp byte [esi], bl
jne 0x40315c
push 0xd
call fcn.00405f3b
push 0xb
call fcn.00405f3b
mov dword [0x7a2764], eax
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
mov dword [0x7a2818], eax
push ebx
lea eax, [esp + 0x38]
push 0x160
push eax
push ebx
push 0x79dd28
call dword [sym.imp.SHELL32.dll_SHGetFileInfoA]
push str.NSIS_Error
push 0x7a1f60
call fcn.00405bab
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
mov ebp, 0x7a8000
push eax
push ebp
call fcn.00405bab
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x7a8000], 0x22
mov dword [0x7a2760], eax
mov eax, ebp
jne 0x4031ef
mov byte [esp + 0x14], 0x22
mov eax, 0x7a8001
push dword [esp + 0x14]
push eax
call fcn.004056c9
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov dword [esp + 0x20], eax
jmp 0x40326d
cmp cl, 0x20
jne 0x403211
inc eax
cmp byte [eax], 0x20
je 0x40320b
cmp byte [eax], 0x22
mov byte [esp + 0x14], 0x20
jne 0x403221
inc eax
mov byte [esp + 0x14], 0x22
cmp byte [eax], 0x2f
jne 0x40325d
inc eax
cmp byte [eax], 0x53
jne 0x40323c
mov cl, byte [eax + 1]
or cl, 0x20
cmp cl, 0x20
jne 0x40323c
or dword [esp + 0x18], 2
cmp dword [eax], 0x4352434e
jne 0x403254
mov cl, byte [eax + 4]
or cl, 0x20
cmp cl, 0x20
jne 0x403254
or dword [esp + 0x18], 4
cmp dword [eax - 2], 0x3d442f20
je 0x403275
push dword [esp + 0x14]
push eax
call fcn.004056c9
cmp byte [eax], 0x22
jne 0x40326d
inc eax
mov cl, byte [eax]
cmp cl, bl
jne 0x403206
jmp 0x403286
mov dword [eax - 2], ebx
add eax, 2
push eax
push 0x7a8400
call fcn.00405bab
mov edi, 0x7a9400
push edi
push 0x400
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
call fcn.004030dd
test eax, eax
jne 0x4032c4
push 0x3fb
push edi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push edi
call sub.KERNEL32.dll_lstrcatA
call fcn.004030dd
test eax, eax
je 0x403345
push 0x7a9000
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push dword [esp + 0x18]
call fcn.00402c55
cmp eax, ebx
mov dword [esp + 0x10], eax
jne 0x403345
cmp dword [0x7a277c], ebx
je 0x403335
push ebx
push ebp
call fcn.004056c9
mov esi, eax
jmp 0x4032fc
cmp dword [esi], 0x3d3f5f20
je 0x403300
dec esi
cmp esi, ebp
jae 0x4032f3
cmp esi, ebp
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x403370
mov byte [esi], bl
add esi, 4
push esi
call fcn.0040577f
test eax, eax
je 0x403345
push esi
push 0x7a8400
call fcn.00405bab
push esi
push 0x7a8800
call fcn.00405bab
mov dword [esp + 0x10], ebx
or dword [0x7a280c], 0xffffffff
call fcn.004035fe
mov dword [esp + 0x1c], eax
call fcn.00403524
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebx
je 0x403469
push 0x200010
push dword [esp + 0x14]
call fcn.0040546c
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
call fcn.004053f3
push str.nsu
push edi
mov esi, eax
call sub.KERNEL32.dll_lstrcatA
cmp esi, ebx
je 0x403391
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 0x403345
cmp esi, ebx
push edi
je 0x4033b9
call fcn.00405359
jmp 0x4033be
call fcn.004053d6
push edi
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryA]
cmp byte [0x7a8400], bl
jne 0x4033d8
push ebp
push 0x7a8400
call fcn.00405bab
push dword [esp + 0x20]
push section..ndata
call fcn.00405bab
push 0x1a
mov word [0x7a3400], 0x41
pop ebp
mov esi, 0x79d928
mov eax, dword [0x7a2770]
push dword [eax + 0x120]
push esi
call fcn.00405bcd
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x10], ebx
je 0x403454
push 1
push esi
push 0x7a9c00
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x403454
push ebx
push esi
call fcn.004058f9
mov eax, dword [0x7a2770]
push dword [eax + 0x124]
push esi
call fcn.00405bcd
push esi
call fcn.0040540b
cmp eax, ebx
je 0x403454
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebx
inc byte [0x7a3400]
dec ebp
jne 0x4033f7
push ebx
push edi
call fcn.004058f9
jmp 0x403345
cmp dword [0x7a27f4], ebx
je 0x40350c
push 5
call fcn.00405f3b
push 6
mov ebp, eax
call fcn.00405f3b
push 7
mov esi, eax
call fcn.00405f3b
cmp ebp, ebx
mov edi, eax
je 0x4034dc
cmp esi, ebx
je 0x4034dc
cmp edi, ebx
je 0x4034dc
lea eax, [esp + 0x20]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebp
test eax, eax
je 0x4034dc
lea eax, [esp + 0x28]
push eax
push str.SeShutdownPrivilege
push ebx
call esi
push ebx
push ebx
lea eax, [esp + 0x2c]
push ebx
push eax
push ebx
push dword [esp + 0x34]
mov dword [esp + 0x3c], 1
mov dword [esp + 0x48], 2
call edi
push 8
call fcn.00405f3b
cmp eax, ebx
mov esi, 0x80040002
je 0x4034f8
push esi
push 0x25
push ebx
push ebx
push ebx
call eax
test eax, eax
je 0x403505
push esi
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x40350c
push 9
call fcn.0040140b
mov eax, dword [0x7a280c]
cmp eax, 0xffffffff
je 0x40351a
mov dword [esp + 0x1c], eax
push dword [esp + 0x1c]
call dword [sym.imp.KERNEL32.dll_ExitProcess]