Function at 0x403683
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 0x8001
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
push 8
mov dword [0x4535d8], eax
call fcn.00405e84
push ebx
push 0x160
mov dword [0x4534c0], eax
lea eax, [esp + 0x38]
push eax
push ebx
push 0x408a3b
call dword [sym.imp.SHELL32.dll_SHGetFileInfoA]
push str.NSIS_Error
push 0x44f4c0
call fcn.00405bef
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
push eax
mov edi, 0x47c000
push edi
call fcn.00405bef
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x47c000], 0x22
mov dword [0x4534c8], eax
mov eax, edi
jne 0x403724
mov byte [esp + 0x14], 0x22
mov eax, 0x47c001
push dword [esp + 0x14]
push eax
call fcn.00405984
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov dword [esp + 0x1c], eax
jmp 0x40379e
cmp cl, 0x20
jne 0x403746
inc eax
cmp byte [eax], 0x20
je 0x403740
cmp byte [eax], 0x22
mov byte [esp + 0x14], 0x20
jne 0x403756
inc eax
mov byte [esp + 0x14], 0x22
cmp byte [eax], 0x2f
jne 0x40378e
inc eax
cmp byte [eax], 0x53
jne 0x40376f
mov cl, byte [eax + 1]
or cl, 0x20
cmp cl, 0x20
jne 0x40376f
or esi, 2
cmp dword [eax], 0x4352434e
jne 0x403785
mov cl, byte [eax + 4]
or cl, 0x20
cmp cl, 0x20
jne 0x403785
or esi, 4
cmp dword [eax - 2], 0x3d442f20
je 0x4037a6
push dword [esp + 0x14]
push eax
call fcn.00405984
cmp byte [eax], 0x22
jne 0x40379e
inc eax
mov cl, byte [eax]
cmp cl, bl
jne 0x40373b
jmp 0x4037b7
mov dword [eax - 2], ebx
add eax, 2
push eax
push 0x47e000
call fcn.00405bef
mov ebp, 0x486000
push ebp
push 0x2000
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
call fcn.00403625
test eax, eax
jne 0x4037f5
push 0x1ffb
push ebp
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push ebp
call sub.KERNEL32.dll_lstrcatA
call fcn.00403625
test eax, eax
je 0x40387a
push 0x484000
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push esi
call fcn.004033df
mov dword [esp + 0x10], eax
cmp eax, ebx
jne 0x40387a
cmp dword [0x453544], ebx
je 0x403863
push ebx
push edi
call fcn.00405984
mov esi, eax
jmp 0x40382a
cmp dword [esi], 0x3d3f5f20
je 0x40382e
dec esi
cmp esi, edi
jae 0x403821
mov dword [esp + 0x10], str.Error_launching_installer
cmp esi, edi
jb 0x4038a5
mov byte [esi], bl
add esi, 4
push esi
call fcn.00405f42
test eax, eax
je 0x40387a
push esi
push 0x47e000
call fcn.00405bef
push esi
push 0x480000
call fcn.00405bef
mov dword [esp + 0x10], ebx
or dword [0x4535cc], 0xffffffff
call fcn.004055d4
push 1
mov dword [esp + 0x1c], eax
call fcn.00405cab
call fcn.00403659
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebx
je 0x403974
push 0x200010
push dword [esp + 0x14]
call fcn.0040591e
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
push str.nsu.tmp
push ebp
call sub.KERNEL32.dll_lstrcatA
mov esi, 0x482000
push esi
push ebp
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x40387a
push ebx
push ebp
call dword [sym.imp.KERNEL32.dll_CreateDirectoryA]
push ebp
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryA]
cmp byte [0x47e000], bl
jne 0x4038e3
push esi
push 0x47e000
call fcn.00405bef
push dword [esp + 0x1c]
push section..ndata
call fcn.00405bef
push 0x41
pop eax
push 0x1a
mov word [0x456000], ax
pop edi
mov esi, 0x4324f8
mov eax, dword [0x4534cc]
push dword [eax + 0x148]
push esi
call fcn.0040601a
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x10], ebx
je 0x40395f
push 1
push esi
push 0x48a000
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x40395f
push ebx
push esi
call fcn.00406274
mov eax, dword [0x4534cc]
push dword [eax + 0x14c]
push esi
call fcn.0040601a
push esi
call fcn.004058bd
cmp eax, ebx
je 0x40395f
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebx
inc byte [0x456000]
dec edi
jne 0x403902
push ebx
push ebp
call fcn.00406274
jmp 0x40387a
cmp dword [0x4535b4], ebx
je 0x4039f7
push 3
call fcn.00405e84
push 4
mov ebp, eax
call fcn.00405e84
push 5
mov esi, eax
call fcn.00405e84
mov edi, eax
cmp ebp, ebx
je 0x4039e3
cmp esi, ebx
je 0x4039e3
cmp edi, ebx
je 0x4039e3
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebp
test eax, eax
je 0x4039e3
lea eax, [esp + 0x24]
push eax
push str.SeShutdownPrivilege
push ebx
call esi
push ebx
push ebx
push ebx
lea eax, [esp + 0x2c]
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 0x4039f7
push 9
call fcn.00401398
mov eax, dword [0x4535cc]
cmp eax, 0xffffffff
je 0x403a05
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
jmp 0x40389f