Function at 0x40310b
Capabilities:
Accept command line arguments
Copy file
Create directory
Delete file
Get common file path
Get file system object information
Set current directory
Set environment variable
Shutdown system
Terminate process

Disassembly:
sub esp, 0x184
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 dword [esp + 0x20], ebx
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 [0x42ec58], eax
call fcn.00405ec3
mov dword [0x42eba4], eax
push ebx
lea eax, [esp + 0x38]
push 0x160
push eax
push ebx
push 0x428fe0
call dword [sym.imp.SHELL32.dll_SHGetFileInfoA]
push str.NSIS_Error
push 0x42e3a0
call fcn.00405b98
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
mov ebp, 0x434000
push eax
push ebp
call fcn.00405b98
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x434000], 0x22
mov dword [0x42eba0], eax
mov eax, ebp
jne 0x4031ae
mov byte [esp + 0x14], 0x22
mov eax, 0x434001
push dword [esp + 0x14]
push eax
call fcn.00405670
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov dword [esp + 0x1c], eax
jmp 0x403288
cmp cl, 0x20
jne 0x4031d3
inc eax
cmp byte [eax], 0x20
je 0x4031cd
cmp byte [eax], 0x22
mov byte [esp + 0x14], 0x20
jne 0x4031e3
inc eax
mov byte [esp + 0x14], 0x22
cmp byte [eax], 0x2f
jne 0x403278
inc eax
cmp byte [eax], 0x53
jne 0x403208
mov cl, byte [eax + 1]
cmp cl, 0x20
je 0x4031fe
cmp cl, bl
jne 0x403208
mov dword [0x42ec40], 1
movsx ecx, byte [0x40917b]
movsx edx, byte [0x40917a]
shl ecx, 8
or ecx, edx
movsx edx, byte [0x409179]
shl ecx, 8
or ecx, edx
movsx edx, byte [str.NCRC]
shl ecx, 8
or ecx, edx
cmp dword [eax], ecx
jne 0x403248
mov cl, byte [eax + 4]
cmp cl, 0x20
je 0x403243
cmp cl, bl
jne 0x403248
or dword [esp + 0x20], 4
movsx ecx, byte [0x409173]
movsx edx, byte [0x409172]
shl ecx, 8
or ecx, edx
movsx edx, byte [0x409171]
shl ecx, 8
or ecx, edx
movsx edx, byte [str.__D]
shl ecx, 8
or ecx, edx
cmp dword [eax - 2], ecx
je 0x403294
push dword [esp + 0x14]
push eax
call fcn.00405670
cmp byte [eax], 0x22
jne 0x403288
inc eax
mov cl, byte [eax]
cmp cl, bl
jne 0x4031c8
jmp 0x4032a5
mov byte [eax - 2], bl
add eax, 2
push eax
push 0x434400
call fcn.00405b98
mov esi, dword [sym.imp.KERNEL32.dll_GetTempPathA]
mov edi, 0x435400
push edi
push 0x400
call esi
call fcn.004030d7
test eax, eax
jne 0x403317
push 0x3fb
push edi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push edi
call sub.KERNEL32.dll_lstrcatA
call fcn.004030d7
test eax, eax
jne 0x403317
push edi
push 0x3fc
call esi
push 0x409164
push edi
call sub.KERNEL32.dll_lstrcatA
mov esi, dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableA]
push edi
push str.TEMP
call esi
push edi
push 0x409158
call esi
call fcn.004030d7
test eax, eax
je 0x4033c5
push 0x435000
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push dword [esp + 0x20]
call fcn.00402c33
cmp eax, ebx
mov dword [esp + 0x10], eax
jne 0x4033c5
cmp dword [0x42ebbc], ebx
je 0x4033b5
push ebx
push ebp
call fcn.00405670
mov esi, eax
cmp esi, ebp
jb 0x403380
movsx eax, byte [0x409153]
movsx ecx, byte [0x409152]
shl eax, 8
or eax, ecx
movsx ecx, byte [0x409151]
shl eax, 8
or eax, ecx
movsx ecx, byte [str.___]
shl eax, 8
or eax, ecx
cmp dword [esi], eax
je 0x403380
dec esi
cmp esi, ebp
jae 0x403377
cmp esi, ebp
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x4033f0
mov byte [esi], bl
add esi, 4
push esi
call fcn.00405733
test eax, eax
je 0x4033c5
push esi
push 0x434400
call fcn.00405b98
push esi
push 0x434800
call fcn.00405b98
mov dword [esp + 0x10], ebx
or dword [0x42ec4c], 0xffffffff
call fcn.00403643
mov dword [esp + 0x18], eax
call fcn.00403569
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebx
je 0x4034ce
push 0x200010
push dword [esp + 0x14]
call fcn.004053c9
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
push str.nsu.tmp
push edi
call sub.KERNEL32.dll_lstrcatA
mov esi, 0x434c00
push esi
push edi
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x4033c5
push ebx
push edi
call dword [sym.imp.KERNEL32.dll_CreateDirectoryA]
push edi
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryA]
cmp byte [0x434400], bl
jne 0x40342e
push esi
push 0x434400
call fcn.00405b98
push dword [esp + 0x1c]
push section..ndata
call fcn.00405b98
movsx cx, byte [0x409140]
xor eax, eax
push 0x1a
mov ah, byte [0x409141]
pop ebp
or eax, ecx
mov esi, 0x428be0
mov word [0x42f400], ax
mov eax, dword [0x42ebb0]
push dword [eax + 0x120]
push esi
call fcn.00405bba
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x10], ebx
je 0x4034b9
push 1
push esi
push 0x435c00
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x4034b9
push ebx
push esi
call fcn.00405a4c
mov eax, dword [0x42ebb0]
push dword [eax + 0x124]
push esi
call fcn.00405bba
push esi
call fcn.00405368
cmp eax, ebx
je 0x4034b9
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebx
inc byte [0x42f400]
dec ebp
jne 0x40345c
push ebx
push edi
call fcn.00405a4c
jmp 0x4033c5
cmp dword [0x42ec34], ebx
je 0x403551
push 3
call fcn.00405ec3
push 4
mov ebp, eax
call fcn.00405ec3
push 5
mov esi, eax
call fcn.00405ec3
cmp ebp, ebx
mov edi, eax
je 0x40353d
cmp esi, ebx
je 0x40353d
cmp edi, ebx
je 0x40353d
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebp
test eax, eax
je 0x40353d
lea eax, [esp + 0x28]
push eax
push str.SeShutdownPrivilege
push ebx
call esi
push ebx
push ebx
lea eax, [esp + 0x2c]
push ebx
push eax
push ebx
push dword [esp + 0x30]
mov dword [esp + 0x3c], 1
mov dword [esp + 0x48], 2
call edi
push ebx
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x403551
push 9
call fcn.0040140b
mov eax, dword [0x42ec4c]
cmp eax, 0xffffffff
je 0x40355f
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
call dword [sym.imp.KERNEL32.dll_ExitProcess]