Function at 0x4039d4
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, 0x2d4
push ebx
push ebp
push esi
push edi
push 0x20
xor ebp, ebp
pop esi
mov dword [esp + 0x18], ebp
mov dword [esp + 0x10], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
mov dword [esp + 0x14], ebp
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push 0x8001
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
push ebp
call dword [sym.imp.ole32.dll_OleInitialize]
push 8
mov dword [0x472e18], eax
call fcn.00406448
push ebp
push 0x2b4
mov dword [0x472d20], eax
lea eax, [esp + 0x38]
push eax
push ebp
push 0x40931c
call dword [sym.imp.SHELL32.dll_SHGetFileInfoW]
push str.NSIS_Error
push 0x46ad20
call fcn.00406155
call dword [sym.imp.KERNEL32.dll_GetCommandLineW]
push eax
mov edi, 0x4c3000
push edi
call fcn.00406155
push ebp
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
cmp word [0x4c3000], 0x22
mov dword [0x472d28], eax
mov eax, edi
jne 0x403a74
push 0x22
pop esi
mov eax, 0x4c3002
push esi
push eax
call fcn.00405e52
push eax
call dword [sym.imp.USER32.dll_CharNextW]
mov esi, eax
mov dword [esp + 0x1c], esi
jmp 0x403b1b
push 0x20
pop ebx
cmp ax, bx
jne 0x403a9d
add esi, 2
cmp word [esi], bx
je 0x403a95
cmp word [esi], 0x22
jne 0x403aa9
push 0x22
add esi, 2
pop ebx
cmp word [esi], 0x2f
jne 0x403b09
add esi, 2
cmp word [esi], 0x53
jne 0x403acb
movzx eax, word [esi + 2]
cmp eax, 0x20
je 0x403ac6
cmp ax, bp
jne 0x403acb
or dword [esp + 0x14], 2
push 4
push str.NCRC
push esi
call fcn.00403939
add esp, 0xc
test eax, eax
jne 0x403af2
movzx eax, word [esi + 8]
cmp eax, 0x20
je 0x403aed
cmp ax, bp
jne 0x403af2
or dword [esp + 0x14], 4
push 4
lea eax, [esi - 4]
push str.__D
push eax
call fcn.00403939
add esp, 0xc
test eax, eax
je 0x403b29
push ebx
push esi
call fcn.00405e52
mov esi, eax
cmp word [esi], 0x22
jne 0x403b1b
add esi, 2
movzx eax, word [esi]
cmp ax, bp
jne 0x403a8d
jmp 0x403b46
push 8
lea eax, [esi - 4]
push ebp
push eax
call fcn.00407eb7
add esp, 0xc
add esi, 4
push esi
push 0x4c7000
call fcn.00406155
mov ebx, 0x4d7000
push ebx
push 0x2000
call dword [sym.imp.KERNEL32.dll_GetTempPathW]
call fcn.00403905
test eax, eax
jne 0x403b84
push 0x1ffb
push ebx
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryW]
push str.Temp
push ebx
call sub.KERNEL32.dll_lstrcatW
call fcn.00403905
test eax, eax
je 0x403c1d
push 0x4d3000
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
push dword [esp + 0x14]
call fcn.0040366a
mov dword [esp + 0x10], eax
cmp eax, ebp
jne 0x403c1d
cmp dword [0x472d84], ebp
je 0x403c06
push ebp
push edi
call fcn.00405e52
mov esi, eax
jmp 0x403bca
push 4
push 0x4092d4
push esi
call fcn.00403939
add esp, 0xc
test eax, eax
je 0x403bce
sub esi, 2
cmp esi, edi
jae 0x403bb3
mov dword [esp + 0x10], str.Error_launching_installer
cmp esi, edi
jb 0x403c48
xor eax, eax
mov word [esi], ax
add esi, 8
push esi
call fcn.004068ca
test eax, eax
je 0x403c1d
push esi
push 0x4c7000
call fcn.00406155
push esi
push 0x4cb000
call fcn.00406155
mov dword [esp + 0x10], ebp
or dword [0x472e0c], 0xffffffff
call fcn.00405a78
push 1
mov dword [esp + 0x1c], eax
call fcn.00406233
call fcn.00403992
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebp
je 0x403d1f
push 0x200010
push dword [esp + 0x14]
call fcn.00405dec
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
push 0x4092c0
push ebx
call sub.KERNEL32.dll_lstrcatW
mov esi, 0x4cf000
push esi
push ebx
call dword [sym.imp.KERNEL32.dll_lstrcmpiW]
test eax, eax
je 0x403c1d
push ebp
push ebx
call dword [sym.imp.KERNEL32.dll_CreateDirectoryW]
push ebx
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryW]
cmp word [0x4c7000], bp
jne 0x403c87
push esi
push 0x4c7000
call fcn.00406155
push dword [esp + 0x1c]
push section..ndata
call fcn.00406155
push 0x4092bc
push 0x477000
call fcn.00406155
push 0x1a
pop edi
mov esi, 0x4331d0
mov eax, dword [0x472d2c]
push dword [eax + 0x120]
push esi
call fcn.00406951
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
cmp dword [esp + 0x10], ebp
je 0x403d09
push 1
push esi
push 0x4df000
call dword [sym.imp.KERNEL32.dll_CopyFileW]
test eax, eax
je 0x403d09
push ebp
push esi
call fcn.00406db1
mov eax, dword [0x472d2c]
push dword [eax + 0x124]
push esi
call fcn.00406951
push esi
call fcn.00405d8b
cmp eax, ebp
je 0x403d09
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebp
inc word [0x477000]
dec edi
jne 0x403cac
push ebp
push ebx
call fcn.00406db1
jmp 0x403c1d
cmp dword [0x472df4], ebp
je 0x403da2
push 3
call fcn.00406448
push 4
mov ebx, eax
call fcn.00406448
push 5
mov esi, eax
call fcn.00406448
mov edi, eax
cmp ebx, ebp
je 0x403d8e
cmp esi, ebp
je 0x403d8e
cmp edi, ebp
je 0x403d8e
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebx
test eax, eax
je 0x403d8e
lea eax, [esp + 0x24]
push eax
push str.SeShutdownPrivilege
push ebp
call esi
push ebp
push ebp
push ebp
lea eax, [esp + 0x2c]
push eax
push ebp
push dword [esp + 0x30]
mov dword [esp + 0x38], 1
mov dword [esp + 0x44], 2
call edi
push ebp
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x403da2
push 9
call fcn.0040141a
mov eax, dword [0x472e0c]
cmp eax, 0xffffffff
je 0x403db0
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
jmp 0x403c42