Function at 0x4030b8
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 [0x446778], eax
call fcn.00405e92
mov dword [0x4466c4], eax
push ebx
lea eax, [esp + 0x38]
push 0x160
push eax
push ebx
push 0x429480
call dword [sym.imp.SHELL32.dll_SHGetFileInfoA]
push str.NSIS_Error
push 0x4426c0
call fcn.00405b67
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
mov ebp, 0x46f000
push eax
push ebp
call fcn.00405b67
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x46f000], 0x22
mov dword [0x4466c0], eax
mov eax, ebp
jne 0x40315b
mov byte [esp + 0x14], 0x22
mov eax, 0x46f001
push dword [esp + 0x14]
push eax
call fcn.00405622
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov dword [esp + 0x1c], eax
jmp 0x403235
cmp cl, 0x20
jne 0x403180
inc eax
cmp byte [eax], 0x20
je 0x40317a
cmp byte [eax], 0x22
mov byte [esp + 0x14], 0x20
jne 0x403190
inc eax
mov byte [esp + 0x14], 0x22
cmp byte [eax], 0x2f
jne 0x403225
inc eax
cmp byte [eax], 0x53
jne 0x4031b5
mov cl, byte [eax + 1]
cmp cl, 0x20
je 0x4031ab
cmp cl, bl
jne 0x4031b5
mov dword [0x446760], 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 0x4031f5
mov cl, byte [eax + 4]
cmp cl, 0x20
je 0x4031f0
cmp cl, bl
jne 0x4031f5
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 0x403241
push dword [esp + 0x14]
push eax
call fcn.00405622
cmp byte [eax], 0x22
jne 0x403235
inc eax
mov cl, byte [eax]
cmp cl, bl
jne 0x403175
jmp 0x403252
mov byte [eax - 2], bl
add eax, 2
push eax
push 0x471000
call fcn.00405b67
mov esi, dword [sym.imp.KERNEL32.dll_GetTempPathA]
mov edi, 0x479000
push edi
push 0x2000
call esi
call fcn.00403084
test eax, eax
jne 0x4032c4
push 0x1ffb
push edi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push edi
call sub.KERNEL32.dll_lstrcatA
call fcn.00403084
test eax, eax
jne 0x4032c4
push edi
push 0x1ffc
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.00403084
test eax, eax
je 0x403372
push 0x477000
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push dword [esp + 0x20]
call fcn.00402c2b
cmp eax, ebx
mov dword [esp + 0x10], eax
jne 0x403372
cmp dword [0x4466dc], ebx
je 0x403362
push ebx
push ebp
call fcn.00405622
mov esi, eax
cmp esi, ebp
jb 0x40332d
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 0x40332d
dec esi
cmp esi, ebp
jae 0x403324
cmp esi, ebp
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x40339d
mov byte [esi], bl
add esi, 4
push esi
call fcn.004056e5
test eax, eax
je 0x403372
push esi
push 0x471000
call fcn.00405b67
push esi
push 0x473000
call fcn.00405b67
mov dword [esp + 0x10], ebx
or dword [0x44676c], 0xffffffff
call fcn.004035f0
mov dword [esp + 0x18], eax
call fcn.00403516
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebx
je 0x40347b
push 0x200010
push dword [esp + 0x14]
call fcn.0040537b
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
push str.nsu.tmp
push edi
call sub.KERNEL32.dll_lstrcatA
mov esi, 0x475000
push esi
push edi
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x403372
push ebx
push edi
call dword [sym.imp.KERNEL32.dll_CreateDirectoryA]
push edi
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryA]
cmp byte [0x471000], bl
jne 0x4033db
push esi
push 0x471000
call fcn.00405b67
push dword [esp + 0x1c]
push section..ndata
call fcn.00405b67
movsx cx, byte [0x409140]
xor eax, eax
push 0x1a
mov ah, byte [0x409141]
pop ebp
or eax, ecx
mov esi, 0x427480
mov word [0x449000], ax
mov eax, dword [0x4466d0]
push dword [eax + 0x120]
push esi
call fcn.00405b89
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x10], ebx
je 0x403466
push 1
push esi
push 0x47d000
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x403466
push ebx
push esi
call fcn.00405a1b
mov eax, dword [0x4466d0]
push dword [eax + 0x124]
push esi
call fcn.00405b89
push esi
call fcn.0040531a
cmp eax, ebx
je 0x403466
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebx
inc byte [0x449000]
dec ebp
jne 0x403409
push ebx
push edi
call fcn.00405a1b
jmp 0x403372
cmp dword [0x446754], ebx
je 0x4034fe
push 3
call fcn.00405e92
push 4
mov ebp, eax
call fcn.00405e92
push 5
mov esi, eax
call fcn.00405e92
cmp ebp, ebx
mov edi, eax
je 0x4034ea
cmp esi, ebx
je 0x4034ea
cmp edi, ebx
je 0x4034ea
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebp
test eax, eax
je 0x4034ea
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 0x4034fe
push 9
call fcn.0040140b
mov eax, dword [0x44676c]
cmp eax, 0xffffffff
je 0x40350c
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
call dword [sym.imp.KERNEL32.dll_ExitProcess]