Function at 0x404069
Capabilities:
Accept command line arguments
Copy file
Delete file
Get common file path
Terminate process

Disassembly:
sub esp, 0x10
push ebx
push ebp
push esi
push edi
mov dword [esp + 0x14], str.Error_writing_temp_file._Make_sure_your_temp_directory_is_valid.
xor ebp, ebp
mov byte [esp + 0x13], 0x20
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push ebp
call dword [sym.imp.ole32.dll_OleInitialize]
mov esi, 0x42d400
mov edi, 0x400
push esi
push edi
mov dword [0x426f60], eax
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
call fcn.00404047
mov ebx, dword [sym.imp.KERNEL32.dll_lstrcatA]
test eax, eax
jne 0x4040d3
push 0x3fb
push esi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push esi
call ebx
call fcn.00404047
test eax, eax
je 0x40422c
mov esi, 0x4266e0
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push str.NSIS_ERROR
push esi
call sub.KERNEL32.dll_lstrcpyA
push edi
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
mov esi, 0x42c000
push eax
push esi
call dword [sym.imp.KERNEL32.dll_lstrcpynA]
push 0
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x42c000], 0x22
mov dword [0x426ee0], eax
mov eax, esi
jne 0x404120
mov byte [esp + 0x13], 0x22
mov eax, 0x42c001
mov edi, dword [sym.imp.USER32.dll_CharNextA]
jmp 0x404131
cmp cl, byte [esp + 0x13]
je 0x404137
push eax
call edi
mov cl, byte [eax]
test cl, cl
jne 0x404128
push eax
call edi
mov esi, eax
mov dword [esp + 0x1c], esi
jmp 0x404147
push esi
call edi
mov esi, eax
cmp byte [esi], 0x20
je 0x404142
cmp byte [esi], 0x2f
jne 0x404195
inc esi
cmp byte [esi], 0x53
jne 0x404163
mov al, byte [esi + 1]
or al, 0x20
cmp al, 0x20
jne 0x404163
or ebp, 2
cmp dword [esi], 0x4352434e
jne 0x404177
mov al, byte [esi + 4]
or al, 0x20
cmp al, 0x20
jne 0x404177
or ebp, 4
cmp word [esi], 0x3d44
jne 0x4041c5
and byte [esi - 2], 0
add esi, 2
push esi
push 0x42c400
call sub.KERNEL32.dll_lstrcpyA
mov esi, 0x4230d0
push ebp
call fcn.00403b49
xor ebp, ebp
cmp eax, ebp
mov dword [esp + 0x14], eax
jne 0x40422c
cmp dword [0x426ef8], ebp
je 0x404223
cmp byte [esi], 0
mov edi, esi
je 0x4041d2
inc edi
cmp byte [edi], 0
jne 0x4041b8
jmp 0x4041e4
push esi
call edi
mov esi, eax
mov al, byte [esi]
or al, 0x20
cmp al, 0x20
jne 0x4041c0
jmp 0x404147
cmp byte [edi], 0x5f
jne 0x4041e3
cmp byte [edi + 1], 0x3f
jne 0x4041e3
cmp byte [edi + 2], 0x3d
je 0x4041e8
dec edi
cmp edi, esi
jae 0x4041d2
cmp edi, esi
mov dword [esp + 0x14], str.Error_launching_installer
jb 0x404288
and byte [edi - 1], 0
add edi, 3
push edi
call fcn.004064d6
test eax, eax
je 0x40422c
push edi
push 0x42c400
call sub.KERNEL32.dll_lstrcpyA
push edi
push 0x42c800
call sub.KERNEL32.dll_lstrcpyA
mov dword [esp + 0x14], ebp
call fcn.0040437b
mov dword [esp + 0x1c], eax
mov eax, dword [0x426ef4]
pop edi
pop esi
pop ebp
cmp eax, 0xffffffff
pop ebx
je 0x404241
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp dword [esp + 4], 0
je 0x404253
push 0x10
push dword [esp + 8]
call fcn.0040636f
cmp byte [0x42dc00], 0
je 0x404268
push 1
push 0x42dc00
call fcn.0040639a
mov eax, dword [0x4266bc]
test eax, eax
je 0x404278
push eax
call dword [sym.imp.GDI32.dll_DeleteObject]
call dword [sym.imp.ole32.dll_OleUninitialize]
push dword [esp + 0xc]
call dword [sym.imp.KERNEL32.dll_ExitProcess]
mov dword [esp + 0x18], ebp
mov edi, 0x4228d1
mov esi, 0x4228d0
mov ebp, 0x4224d0
push 0x42d400
push edi
mov byte [0x4228d0], 0x22
call sub.KERNEL32.dll_lstrcpyA
push str.ANSISu_.exe
push esi
call ebx
push edi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x14], 0
je 0x404361
push 0x400
push ebp
push dword [0x426ee0]
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameA]
lea eax, [eax + 0x4224c4]
push 0x4091bd
push eax
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x40422c
push 0
push edi
push ebp
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x404361
push 0
push edi
call fcn.00406636
cmp byte [0x42c400], 0
je 0x40431f
push 0x42c400
push ebp
call sub.KERNEL32.dll_lstrcpyA
jmp 0x404325
push ebp
call fcn.00406431
push 0x4091d4
push esi
call ebx
push dword [esp + 0x1c]
push esi
call ebx
push str.___
push esi
call ebx
push ebp
push esi
call ebx
push esi
call fcn.00406405
push 0x42d400
push esi
call fcn.00406305
test eax, eax
je 0x404361
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
and dword [esp + 0x14], 0
inc byte [str.ANSISu_.exe]
inc dword [esp + 0x18]
cmp dword [esp + 0x18], 0x1a
jl 0x40429b
jmp 0x40422c