Function at 0x40376f
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 [0x4258d8], eax
call fcn.00405f42
push ebx
push 0x160
mov dword [0x4257e0], eax
lea eax, [esp + 0x38]
push eax
push ebx
push 0x408a73
call dword [sym.imp.SHELL32.dll_SHGetFileInfoA]
push str.NSIS_Error
push 0x424fe0
call fcn.00405cad
call dword [sym.imp.KERNEL32.DLL_GetCommandLineA]
push eax
mov edi, 0x42b000
push edi
call fcn.00405cad
push ebx
call dword [sym.imp.KERNEL32.DLL_GetModuleHandleA]
cmp byte [0x42b000], 0x22
mov dword [0x4257e8], eax
mov eax, edi
jne 0x403810
mov byte [esp + 0x14], 0x22
mov eax, 0x42b001
push dword [esp + 0x14]
push eax
call fcn.00405a4b
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov dword [esp + 0x1c], eax
jmp 0x40388a
cmp cl, 0x20
jne 0x403832
inc eax
cmp byte [eax], 0x20
je 0x40382c
cmp byte [eax], 0x22
mov byte [esp + 0x14], 0x20
jne 0x403842
inc eax
mov byte [esp + 0x14], 0x22
cmp byte [eax], 0x2f
jne 0x40387a
inc eax
cmp byte [eax], 0x53
jne 0x40385b
mov cl, byte [eax + 1]
or cl, 0x20
cmp cl, 0x20
jne 0x40385b
or esi, 2
cmp dword [eax], 0x4352434e
jne 0x403871
mov cl, byte [eax + 4]
or cl, 0x20
cmp cl, 0x20
jne 0x403871
or esi, 4
cmp dword [eax - 2], 0x3d442f20
je 0x403892
push dword [esp + 0x14]
push eax
call fcn.00405a4b
cmp byte [eax], 0x22
jne 0x40388a
inc eax
mov cl, byte [eax]
cmp cl, bl
jne 0x403827
jmp 0x4038a3
mov dword [eax - 2], ebx
add eax, 2
push eax
push 0x42b400
call fcn.00405cad
mov ebp, 0x42c400
push ebp
push 0x400
call dword [sym.imp.KERNEL32.DLL_GetTempPathA]
call fcn.004036f9
test eax, eax
jne 0x4038e1
push 0x3fb
push ebp
call dword [sym.imp.KERNEL32.DLL_GetWindowsDirectoryA]
push str.Temp
push ebp
call sub.KERNEL32.DLL_lstrcatA
call fcn.004036f9
test eax, eax
je 0x403966
push 0x42c000
call dword [sym.imp.KERNEL32.DLL_DeleteFileA]
push esi
call fcn.0040345e
cmp eax, ebx
mov dword [esp + 0x10], eax
jne 0x403966
cmp dword [0x425844], ebx
je 0x40394f
push ebx
push edi
call fcn.00405a4b
mov esi, eax
jmp 0x403916
cmp dword [esi], 0x3d3f5f20
je 0x40391a
dec esi
cmp esi, edi
jae 0x40390d
cmp esi, edi
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x403991
mov byte [esi], bl
add esi, 4
push esi
call fcn.00406000
test eax, eax
je 0x403966
push esi
push 0x42b400
call fcn.00405cad
push esi
push 0x42b800
call fcn.00405cad
mov dword [esp + 0x10], ebx
or dword [0x4258cc], 0xffffffff
call fcn.0040569d
push 1
mov dword [esp + 0x1c], eax
call fcn.00405d69
call fcn.0040372d
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebx
je 0x403a60
push 0x200010
push dword [esp + 0x14]
call fcn.004059e7
push 2
call dword [sym.imp.KERNEL32.DLL_ExitProcess]
push str.nsu.tmp
push ebp
call sub.KERNEL32.DLL_lstrcatA
mov esi, 0x42bc00
push esi
push ebp
call dword [sym.imp.KERNEL32.DLL_lstrcmpiA]
test eax, eax
je 0x403966
push ebx
push ebp
call dword [sym.imp.KERNEL32.DLL_CreateDirectoryA]
push ebp
call dword [sym.imp.KERNEL32.DLL_SetCurrentDirectoryA]
cmp byte [0x42b400], bl
jne 0x4039cf
push esi
push 0x42b400
call fcn.00405cad
push dword [esp + 0x1c]
push section..ndata
call fcn.00405cad
push 0x1a
mov word [0x426400], 0x41
pop edi
mov esi, 0x41fdb0
mov eax, dword [0x4257ec]
push dword [eax + 0x120]
push esi
call fcn.004060d8
push esi
call dword [sym.imp.KERNEL32.DLL_DeleteFileA]
cmp dword [esp + 0x10], ebx
je 0x403a4b
push 1
push esi
push 0x42cc00
call dword [sym.imp.KERNEL32.DLL_CopyFileA]
test eax, eax
je 0x403a4b
push ebx
push esi
call fcn.0040632e
mov eax, dword [0x4257ec]
push dword [eax + 0x124]
push esi
call fcn.004060d8
push esi
call fcn.00405986
cmp eax, ebx
je 0x403a4b
push eax
call dword [sym.imp.KERNEL32.DLL_CloseHandle]
mov dword [esp + 0x10], ebx
inc byte [0x426400]
dec edi
jne 0x4039ee
push ebx
push ebp
call fcn.0040632e
jmp 0x403966
cmp dword [0x4258b4], ebx
je 0x403ae3
push 3
call fcn.00405f42
push 4
mov ebp, eax
call fcn.00405f42
push 5
mov esi, eax
call fcn.00405f42
cmp ebp, ebx
mov edi, eax
je 0x403acf
cmp esi, ebx
je 0x403acf
cmp edi, ebx
je 0x403acf
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.DLL_GetCurrentProcess]
push eax
call ebp
test eax, eax
je 0x403acf
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 0x403ae3
push 9
call fcn.00401411
mov eax, dword [0x4258cc]
cmp eax, 0xffffffff
je 0x403af1
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
jmp 0x40398b