Function at 0x40402d
Capabilities:
Accept command line arguments
Copy file
Delete file
Get common file path
Shutdown system
Terminate process

Disassembly:
sub esp, 0x20
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.
mov byte [esp + 0x14], 0x20
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
push str.NSIS_Error
push 0x42e820
mov dword [0x42f0d0], eax
call sub.KERNEL32.dll_lstrcpyA
mov esi, 0x436400
mov edi, 0x400
push esi
push edi
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
call fcn.00403ff9
mov ebp, dword [sym.imp.KERNEL32.dll_lstrcatA]
test eax, eax
jne 0x4040aa
push 0x3fb
push esi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push esi
call ebp
call fcn.00403ff9
test eax, eax
je 0x4041f1
mov esi, 0x435000
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push edi
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
push eax
push esi
call dword [sym.imp.KERNEL32.dll_lstrcpynA]
push 0
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x435000], 0x22
mov dword [0x42f020], eax
jne 0x4040e5
mov byte [esp + 0x14], 0x22
mov esi, 0x435001
push dword [esp + 0x14]
push esi
call fcn.00406331
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov edi, eax
mov dword [esp + 0x1c], edi
jmp 0x404161
cmp cl, 0x20
jne 0x404109
inc eax
cmp byte [eax], 0x20
je 0x404103
cmp byte [eax], 0x22
mov byte [esp + 0x14], 0x20
jne 0x404119
inc eax
mov byte [esp + 0x14], 0x22
cmp byte [eax], 0x2f
jne 0x404151
inc eax
cmp byte [eax], 0x53
jne 0x404132
mov cl, byte [eax + 1]
or cl, 0x20
cmp cl, 0x20
jne 0x404132
or ebx, 2
cmp dword [eax], 0x4352434e
jne 0x404148
mov cl, byte [eax + 4]
or cl, 0x20
cmp cl, 0x20
jne 0x404148
or ebx, 4
cmp dword [eax - 2], 0x3d442f20
je 0x404169
push dword [esp + 0x14]
push eax
call fcn.00406331
cmp byte [eax], 0x22
jne 0x404161
inc eax
mov cl, byte [eax]
test cl, cl
jne 0x4040fe
jmp 0x40417b
and byte [eax - 2], 0
add eax, 2
push eax
push 0x435400
call sub.KERNEL32.dll_lstrcpyA
push ebx
call fcn.00403ae6
xor ebx, ebx
cmp eax, ebx
mov dword [esp + 0x10], eax
jne 0x4041f1
cmp dword [0x42f034], ebx
je 0x4041e1
push ebx
push edi
call fcn.00406331
mov esi, eax
jmp 0x4041a7
cmp dword [esi], 0x3d3f5f20
je 0x4041ab
dec esi
cmp esi, edi
jae 0x40419e
cmp esi, edi
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x40421d
and byte [esi], 0
add esi, 4
push esi
call fcn.004063e6
test eax, eax
je 0x4041f1
push esi
push 0x435400
call sub.KERNEL32.dll_lstrcpyA
push esi
push 0x435800
call sub.KERNEL32.dll_lstrcpyA
mov dword [esp + 0x10], ebx
or dword [0x42f0cc], 0xffffffff
call fcn.004043f2
mov dword [esp + 0x18], eax
call fcn.004043cd
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], 0
je 0x404310
push 0x200010
push dword [esp + 0x14]
call fcn.0040611a
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
mov dword [esp + 0x14], ebx
mov edi, 0x42a5e9
mov esi, 0x42a5e8
mov ebx, 0x42a1e8
push 0x436400
push edi
mov byte [0x42a5e8], 0x22
call sub.KERNEL32.dll_lstrcpyA
push str.ANSISu_.exe
push esi
call ebp
push edi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x10], 0
je 0x4042f6
push 0x400
push ebx
push dword [0x42f020]
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameA]
lea eax, [eax + 0x42a1dd]
push 0x4091c9
push eax
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x4041f1
push 0
push edi
push ebx
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x4042f6
push 0
push edi
call fcn.0040653c
cmp byte [0x435400], 0
je 0x4042b4
push 0x435400
push ebx
call sub.KERNEL32.dll_lstrcpyA
jmp 0x4042ba
push ebx
call fcn.0040634d
push 0x409248
push esi
call ebp
push dword [esp + 0x1c]
push esi
call ebp
push str.___
push esi
call ebp
push ebx
push esi
call ebp
push esi
call fcn.00406305
push 0x436400
push esi
call fcn.004060a2
test eax, eax
je 0x4042f6
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
and dword [esp + 0x10], 0
inc byte [str.ANSISu_.exe]
inc dword [esp + 0x14]
cmp dword [esp + 0x14], 0x1a
jl 0x404230
jmp 0x4041f1
cmp dword [0x42f0b4], 0
je 0x4043b5
push str.ADVAPI32.dll
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
mov edi, eax
test edi, edi
je 0x4043a0
mov esi, dword [sym.imp.KERNEL32.dll_GetProcAddress]
push str.OpenProcessToken
push edi
call esi
push str.LookupPrivilegeValueA
push edi
mov ebp, eax
call esi
push str.AdjustTokenPrivileges
push edi
mov ebx, eax
call esi
test ebp, ebp
mov edi, eax
je 0x4043a0
test ebx, ebx
je 0x4043a0
test edi, edi
je 0x4043a0
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebp
test eax, eax
je 0x4043a0
lea eax, [esp + 0x24]
xor esi, esi
push eax
push str.SeShutdownPrivilege
push esi
call ebx
push esi
push esi
lea eax, [esp + 0x28]
push esi
push eax
push esi
push dword [esp + 0x30]
mov dword [esp + 0x38], 1
mov dword [esp + 0x44], 2
call edi
push 0
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x4043b5
push 9
call fcn.004022bb
mov eax, dword [0x42f0cc]
cmp eax, 0xffffffff
je 0x4043c3
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
call dword [sym.imp.KERNEL32.dll_ExitProcess]