Function at 0x403375
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 [0x42fcb8], eax
call fcn.004058e0
push ebx
push 0x160
mov dword [0x42fbc0], eax
lea eax, [esp + 0x38]
push eax
push ebx
push 0x4073db
call dword [sym.imp.SHELL32.dll_SHGetFileInfoA]
push str.NSIS_Error
push 0x42f3c0
call fcn.004057ea
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
push eax
mov edi, 0x435000
push edi
call fcn.004057ea
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x435000], 0x22
mov dword [0x42fbc8], eax
mov eax, edi
jne 0x403416
mov byte [esp + 0x14], 0x22
mov eax, 0x435001
push dword [esp + 0x14]
push eax
call fcn.00405581
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov dword [esp + 0x1c], eax
jmp 0x403490
cmp cl, 0x20
jne 0x403438
inc eax
cmp byte [eax], 0x20
je 0x403432
cmp byte [eax], 0x22
mov byte [esp + 0x14], 0x20
jne 0x403448
inc eax
mov byte [esp + 0x14], 0x22
cmp byte [eax], 0x2f
jne 0x403480
inc eax
cmp byte [eax], 0x53
jne 0x403461
mov cl, byte [eax + 1]
or cl, 0x20
cmp cl, 0x20
jne 0x403461
or esi, 2
cmp dword [eax], 0x4352434e
jne 0x403477
mov cl, byte [eax + 4]
or cl, 0x20
cmp cl, 0x20
jne 0x403477
or esi, 4
cmp dword [eax - 2], 0x3d442f20
je 0x403498
push dword [esp + 0x14]
push eax
call fcn.00405581
cmp byte [eax], 0x22
jne 0x403490
inc eax
mov cl, byte [eax]
cmp cl, bl
jne 0x40342d
jmp 0x4034a9
mov dword [eax - 2], ebx
add eax, 2
push eax
push 0x435400
call fcn.004057ea
mov ebp, 0x436400
push ebp
push 0x400
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
call fcn.00403317
test eax, eax
jne 0x4034e3
push 0x3fb
push ebp
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push ebp
call sub.KERNEL32.dll_lstrcatA
call fcn.00403317
test eax, eax
je 0x403561
push 0x436000
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push esi
call fcn.004030d2
mov dword [esp + 0x10], eax
cmp eax, ebx
jne 0x403561
cmp dword [0x42fc24], ebx
je 0x403551
push ebx
push edi
call fcn.00405581
mov esi, eax
jmp 0x403518
cmp dword [esi], 0x3d3f5f20
je 0x40351c
dec esi
cmp esi, edi
jae 0x40350f
mov dword [esp + 0x10], str.Error_launching_installer
cmp esi, edi
jb 0x40358c
mov byte [esi], bl
add esi, 4
push esi
call fcn.0040599d
test eax, eax
je 0x403561
push esi
push 0x435400
call fcn.004057ea
push esi
push 0x435800
call fcn.004057ea
mov dword [esp + 0x10], ebx
or dword [0x42fcac], 0xffffffff
call fcn.004051f1
mov dword [esp + 0x18], eax
call fcn.0040334b
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebx
je 0x40365b
push 0x200010
push dword [esp + 0x14]
call fcn.0040551b
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
push str.nsu.tmp
push ebp
call sub.KERNEL32.dll_lstrcatA
mov esi, 0x435c00
push esi
push ebp
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x403561
push ebx
push ebp
call dword [sym.imp.KERNEL32.dll_CreateDirectoryA]
push ebp
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryA]
cmp byte [0x435400], bl
jne 0x4035ca
push esi
push 0x435400
call fcn.004057ea
push dword [esp + 0x1c]
push section..ndata
call fcn.004057ea
push 0x41
pop eax
push 0x1a
mov word [0x430400], ax
pop edi
mov esi, 0x42ad80
mov eax, dword [0x42fbcc]
push dword [eax + 0x120]
push esi
call fcn.0040580c
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x10], ebx
je 0x403646
push 1
push esi
push 0x436c00
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x403646
push ebx
push esi
call fcn.00405a75
mov eax, dword [0x42fbcc]
push dword [eax + 0x124]
push esi
call fcn.0040580c
push esi
call fcn.004054ba
cmp eax, ebx
je 0x403646
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebx
inc byte [0x430400]
dec edi
jne 0x4035e9
push ebx
push ebp
call fcn.00405a75
jmp 0x403561
cmp dword [0x42fc94], ebx
je 0x4036de
push 3
call fcn.004058e0
push 4
mov ebp, eax
call fcn.004058e0
push 5
mov esi, eax
call fcn.004058e0
mov edi, eax
cmp ebp, ebx
je 0x4036ca
cmp esi, ebx
je 0x4036ca
cmp edi, ebx
je 0x4036ca
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebp
test eax, eax
je 0x4036ca
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 0x4036de
push 9
call fcn.0040141a
mov eax, dword [0x42fcac]
cmp eax, 0xffffffff
je 0x4036ec
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
jmp 0x403586