Function at 0x40310d
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 0x403154
push ebx
call fcn.00405f2d
cmp eax, ebx
je 0x403154
push 0xc00
call eax
push str.UXTHEME
call fcn.00405ec3
push str.USERENV
call fcn.00405ec3
push str.SETUPAPI
call fcn.00405ec3
push 0xd
call fcn.00405f2d
push 0xb
call fcn.00405f2d
mov dword [0x42ec44], eax
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
mov dword [0x42ecf8], eax
push ebx
lea eax, [esp + 0x34]
push 0x160
push eax
push ebx
push 0x429078
call dword [sym.imp.SHELL32.dll_SHGetFileInfoA]
push str.NSIS_Error
push 0x42e440
call fcn.00405ba1
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
mov ebp, 0x434000
push eax
push ebp
call fcn.00405ba1
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x434000], 0x22
mov dword [0x42ec40], eax
mov eax, ebp
jne 0x4031f0
mov byte [esp + 0x14], 0x22
mov eax, 0x434001
push dword [esp + 0x14]
push eax
call fcn.004056bf
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov dword [esp + 0x1c], eax
jmp 0x40326a
cmp cl, 0x20
jne 0x403212
inc eax
cmp byte [eax], 0x20
je 0x40320c
cmp byte [eax], 0x22
mov byte [esp + 0x14], 0x20
jne 0x403222
inc eax
mov byte [esp + 0x14], 0x22
cmp byte [eax], 0x2f
jne 0x40325a
inc eax
cmp byte [eax], 0x53
jne 0x40323b
mov cl, byte [eax + 1]
or cl, 0x20
cmp cl, 0x20
jne 0x40323b
or esi, 2
cmp dword [eax], 0x4352434e
jne 0x403251
mov cl, byte [eax + 4]
or cl, 0x20
cmp cl, 0x20
jne 0x403251
or esi, 4
cmp dword [eax - 2], 0x3d442f20
je 0x403272
push dword [esp + 0x14]
push eax
call fcn.004056bf
cmp byte [eax], 0x22
jne 0x40326a
inc eax
mov cl, byte [eax]
cmp cl, bl
jne 0x403207
jmp 0x403283
mov dword [eax - 2], ebx
add eax, 2
push eax
push 0x434400
call fcn.00405ba1
mov edi, 0x435400
push edi
push 0x400
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
call fcn.004030dc
test eax, eax
jne 0x4032bd
push 0x3fb
push edi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push edi
call sub.KERNEL32.dll_lstrcatA
call fcn.004030dc
test eax, eax
je 0x40333b
push 0x435000
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push esi
call fcn.00402c38
cmp eax, ebx
mov dword [esp + 0x10], eax
jne 0x40333b
cmp dword [0x42ec5c], ebx
je 0x40332b
push ebx
push ebp
call fcn.004056bf
mov esi, eax
jmp 0x4032f2
cmp dword [esi], 0x3d3f5f20
je 0x4032f6
dec esi
cmp esi, ebp
jae 0x4032e9
cmp esi, ebp
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x403366
mov byte [esi], bl
add esi, 4
push esi
call fcn.00405775
test eax, eax
je 0x40333b
push esi
push 0x434400
call fcn.00405ba1
push esi
push 0x434800
call fcn.00405ba1
mov dword [esp + 0x10], ebx
or dword [0x42ecec], 0xffffffff
call fcn.004035f4
mov dword [esp + 0x18], eax
call fcn.0040351a
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebx
je 0x40345f
push 0x200010
push dword [esp + 0x14]
call fcn.00405462
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
call fcn.004053e9
push str.nsu
push edi
mov esi, eax
call sub.KERNEL32.dll_lstrcatA
cmp esi, ebx
je 0x403387
push 0x409148
push edi
call sub.KERNEL32.dll_lstrcatA
push str..tmp
push edi
call sub.KERNEL32.dll_lstrcatA
mov ebp, 0x434c00
push ebp
push edi
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x40333b
cmp esi, ebx
push edi
je 0x4033af
call fcn.0040534f
jmp 0x4033b4
call fcn.004053cc
push edi
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryA]
cmp byte [0x434400], bl
jne 0x4033ce
push ebp
push 0x434400
call fcn.00405ba1
push dword [esp + 0x1c]
push section..ndata
call fcn.00405ba1
push 0x1a
mov word [0x42f400], 0x41
pop ebp
mov esi, 0x428c78
mov eax, dword [0x42ec50]
push dword [eax + 0x120]
push esi
call fcn.00405bc3
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x10], ebx
je 0x40344a
push 1
push esi
push 0x435c00
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x40344a
push ebx
push esi
call fcn.004058ef
mov eax, dword [0x42ec50]
push dword [eax + 0x124]
push esi
call fcn.00405bc3
push esi
call fcn.00405401
cmp eax, ebx
je 0x40344a
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebx
inc byte [0x42f400]
dec ebp
jne 0x4033ed
push ebx
push edi
call fcn.004058ef
jmp 0x40333b
cmp dword [0x42ecd4], ebx
je 0x403502
push 5
call fcn.00405f2d
push 6
mov ebp, eax
call fcn.00405f2d
push 7
mov esi, eax
call fcn.00405f2d
cmp ebp, ebx
mov edi, eax
je 0x4034d2
cmp esi, ebx
je 0x4034d2
cmp edi, ebx
je 0x4034d2
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebp
test eax, eax
je 0x4034d2
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.00405f2d
cmp eax, ebx
mov esi, 0x80040002
je 0x4034ee
push esi
push 0x25
push ebx
push ebx
push ebx
call eax
test eax, eax
je 0x4034fb
push esi
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x403502
push 9
call fcn.0040140b
mov eax, dword [0x42ecec]
cmp eax, 0xffffffff
je 0x403510
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
call dword [sym.imp.KERNEL32.dll_ExitProcess]