Function at 0x403847
Capabilities:
Accept command line arguments
Check for time delay via gettickcount
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, 0x188
push ebx
push ebp
push esi
xor ebx, ebx
push edi
mov dword [esp + 0x1c], ebx
mov dword [esp + 0x10], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
mov dword [esp + 0x18], ebx
mov byte [esp + 0x14], 0x20
call dword [sym.imp.KERNEL32.dll_GetTickCount]
mov dword [esp + 0x20], eax
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 [0x44a958], eax
call fcn.004061a1
push ebx
push 0x160
mov dword [0x44a868], eax
lea eax, [esp + 0x40]
push eax
push ebx
push 0x409b6f
call dword [sym.imp.SHELL32.dll_SHGetFileInfoA]
push str.NSIS_Error
push 0x446860
call fcn.00405ef7
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
push eax
mov edi, 0x473050
push edi
call fcn.00405ef7
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x473050], 0x22
mov dword [0x44a870], eax
mov eax, edi
jne 0x4038f4
mov byte [esp + 0x14], 0x22
mov eax, 0x473051
push dword [esp + 0x14]
push eax
call fcn.00405c32
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov esi, eax
mov dword [esp + 0x24], esi
jmp 0x403992
cmp al, 0x20
jne 0x40391a
inc esi
cmp byte [esi], 0x20
je 0x403914
cmp byte [esi], 0x22
mov byte [esp + 0x14], 0x20
jne 0x40392a
inc esi
mov byte [esp + 0x14], 0x22
cmp byte [esi], 0x2f
jne 0x403980
inc esi
cmp byte [esi], 0x53
jne 0x403945
mov al, byte [esi + 1]
cmp al, 0x20
je 0x403940
cmp al, bl
jne 0x403945
or dword [esp + 0x18], 2
push 4
pop ebp
push ebp
push str.NCRC
push esi
call fcn.004037b7
add esp, 0xc
test eax, eax
jne 0x40396a
mov al, byte [esi + 4]
cmp al, 0x20
je 0x403966
cmp al, bl
jne 0x40396a
or dword [esp + 0x18], ebp
push ebp
lea eax, [esi - 2]
push str.__D
push eax
call fcn.004037b7
add esp, 0xc
test eax, eax
je 0x40399e
push dword [esp + 0x14]
push esi
call fcn.00405c32
mov esi, eax
cmp byte [esi], 0x22
jne 0x403992
inc esi
mov al, byte [esi]
cmp al, bl
jne 0x403910
jmp 0x4039ba
push ebp
lea eax, [esi - 2]
push ebx
push eax
call fcn.004084c5
add esp, 0xc
add esi, 2
push esi
push 0x475054
call fcn.00405ef7
mov ebp, 0x47d064
push ebp
push 0x2004
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
call fcn.00403783
test eax, eax
jne 0x4039f8
push 0x1fff
push ebp
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push ebp
call sub.KERNEL32.dll_lstrcatA
call fcn.00403783
test eax, eax
je 0x403aaa
push 0x47b060
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push dword [esp + 0x18]
call fcn.004034e8
cmp eax, ebx
mov dword [esp + 0x10], eax
jne 0x403aaa
cmp dword [0x44a8c4], ebx
je 0x403a7d
push ebx
push edi
call fcn.00405c32
mov esi, eax
jmp 0x403a40
push 4
push str.___
push esi
call fcn.004037b7
add esp, 0xc
test eax, eax
je 0x403a44
dec esi
cmp esi, edi
jae 0x403a2b
cmp esi, edi
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x403ad5
mov byte [esi], bl
add esi, 4
push esi
call fcn.004065c7
test eax, eax
je 0x403aaa
push esi
push 0x475054
call fcn.00405ef7
push esi
push 0x477058
call fcn.00405ef7
mov dword [esp + 0x10], ebx
or dword [0x44a94c], 0xffffffff
call fcn.0040587a
mov dword [esp + 0x1c], eax
call dword [sym.imp.KERNEL32.dll_GetTickCount]
sub eax, dword [esp + 0x20]
push eax
push dword [esp + 0x20]
call fcn.004077aa
pop ecx
pop ecx
push 1
call fcn.00405fc0
call fcn.00403805
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebx
je 0x403baa
push 0x200010
push dword [esp + 0x14]
call fcn.00405bce
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
push str.nsu.tmp
push ebp
call sub.KERNEL32.dll_lstrcatA
mov esi, 0x47905c
push esi
push ebp
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x403aaa
push ebx
push ebp
call dword [sym.imp.KERNEL32.dll_CreateDirectoryA]
push ebp
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryA]
cmp byte [0x475054], bl
jne 0x403b13
push esi
push 0x475054
call fcn.00405ef7
push dword [esp + 0x24]
push section..ndata
call fcn.00405ef7
push 0x409b34
push 0x44d004
call fcn.00405ef7
push 0x1a
pop edi
mov esi, 0x42a9c0
mov eax, dword [0x44a874]
push dword [eax + 0x134]
push esi
call fcn.00406649
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x10], ebx
je 0x403b95
push 1
push esi
push 0x48106c
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x403b95
push ebx
push esi
call fcn.00406a31
mov eax, dword [0x44a874]
push dword [eax + 0x138]
push esi
call fcn.00406649
push esi
call fcn.00405b6d
cmp eax, ebx
je 0x403b95
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebx
inc byte [0x44d004]
dec edi
jne 0x403b38
push ebx
push ebp
call fcn.00406a31
jmp 0x403aaa
cmp dword [0x44a934], ebx
je 0x403c2d
push 3
call fcn.004061a1
push 4
mov ebp, eax
call fcn.004061a1
push 5
mov esi, eax
call fcn.004061a1
cmp ebp, ebx
mov edi, eax
je 0x403c19
cmp esi, ebx
je 0x403c19
cmp edi, ebx
je 0x403c19
lea eax, [esp + 0x20]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebp
test eax, eax
je 0x403c19
lea eax, [esp + 0x2c]
push eax
push str.SeShutdownPrivilege
push ebx
call esi
push ebx
push ebx
push ebx
lea eax, [esp + 0x34]
push eax
push ebx
push dword [esp + 0x34]
mov dword [esp + 0x40], 1
mov dword [esp + 0x4c], 2
call edi
push ebx
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x403c2d
push 9
call fcn.00401414
mov eax, dword [0x44a94c]
cmp eax, 0xffffffff
je 0x403c3b
mov dword [esp + 0x1c], eax
push dword [esp + 0x1c]
jmp 0x403acf