Function at 0x4030c9
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 [0x7a1fb8], eax
call fcn.00405ea3
mov dword [0x7a1f04], eax
push ebx
lea eax, [esp + 0x38]
push 0x160
push eax
push ebx
push 0x79d4b8
call dword [sym.imp.SHELL32.dll_SHGetFileInfoA]
push str.NSIS_Error
push 0x7a1700
call fcn.00405b78
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
mov ebp, 0x7a7000
push eax
push ebp
call fcn.00405b78
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x7a7000], 0x22
mov dword [0x7a1f00], eax
mov eax, ebp
jne 0x40316c
mov byte [esp + 0x14], 0x22
mov eax, 0x7a7001
push dword [esp + 0x14]
push eax
call fcn.00405633
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov dword [esp + 0x1c], eax
jmp 0x403246
cmp cl, 0x20
jne 0x403191
inc eax
cmp byte [eax], 0x20
je 0x40318b
cmp byte [eax], 0x22
mov byte [esp + 0x14], 0x20
jne 0x4031a1
inc eax
mov byte [esp + 0x14], 0x22
cmp byte [eax], 0x2f
jne 0x403236
inc eax
cmp byte [eax], 0x53
jne 0x4031c6
mov cl, byte [eax + 1]
cmp cl, 0x20
je 0x4031bc
cmp cl, bl
jne 0x4031c6
mov dword [0x7a1fa0], 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 0x403206
mov cl, byte [eax + 4]
cmp cl, 0x20
je 0x403201
cmp cl, bl
jne 0x403206
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 0x403252
push dword [esp + 0x14]
push eax
call fcn.00405633
cmp byte [eax], 0x22
jne 0x403246
inc eax
mov cl, byte [eax]
cmp cl, bl
jne 0x403186
jmp 0x403263
mov byte [eax - 2], bl
add eax, 2
push eax
push 0x7a7400
call fcn.00405b78
mov esi, dword [sym.imp.KERNEL32.dll_GetTempPathA]
mov edi, 0x7a8400
push edi
push 0x400
call esi
call fcn.00403095
test eax, eax
jne 0x4032d5
push 0x3fb
push edi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push edi
call sub.KERNEL32.dll_lstrcatA
call fcn.00403095
test eax, eax
jne 0x4032d5
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.00403095
test eax, eax
je 0x403383
push 0x7a8000
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push dword [esp + 0x20]
call fcn.00402c29
cmp eax, ebx
mov dword [esp + 0x10], eax
jne 0x403383
cmp dword [0x7a1f1c], ebx
je 0x403373
push ebx
push ebp
call fcn.00405633
mov esi, eax
cmp esi, ebp
jb 0x40333e
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 0x40333e
dec esi
cmp esi, ebp
jae 0x403335
cmp esi, ebp
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x4033ae
mov byte [esi], bl
add esi, 4
push esi
call fcn.004056f6
test eax, eax
je 0x403383
push esi
push 0x7a7400
call fcn.00405b78
push esi
push 0x7a7800
call fcn.00405b78
mov dword [esp + 0x10], ebx
or dword [0x7a1fac], 0xffffffff
call fcn.00403601
mov dword [esp + 0x18], eax
call fcn.00403527
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebx
je 0x40348c
push 0x200010
push dword [esp + 0x14]
call fcn.0040538c
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
push str.nsu.tmp
push edi
call sub.KERNEL32.dll_lstrcatA
mov esi, 0x7a7c00
push esi
push edi
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x403383
push ebx
push edi
call dword [sym.imp.KERNEL32.dll_CreateDirectoryA]
push edi
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryA]
cmp byte [0x7a7400], bl
jne 0x4033ec
push esi
push 0x7a7400
call fcn.00405b78
push dword [esp + 0x1c]
push section..ndata
call fcn.00405b78
movsx cx, byte [0x409140]
xor eax, eax
push 0x1a
mov ah, byte [0x409141]
pop ebp
or eax, ecx
mov esi, 0x79d0b8
mov word [0x7a2400], ax
mov eax, dword [0x7a1f10]
push dword [eax + 0x120]
push esi
call fcn.00405b9a
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x10], ebx
je 0x403477
push 1
push esi
push 0x7a8c00
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x403477
push ebx
push esi
call fcn.00405a2c
mov eax, dword [0x7a1f10]
push dword [eax + 0x124]
push esi
call fcn.00405b9a
push esi
call fcn.0040532b
cmp eax, ebx
je 0x403477
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebx
inc byte [0x7a2400]
dec ebp
jne 0x40341a
push ebx
push edi
call fcn.00405a2c
jmp 0x403383
cmp dword [0x7a1f94], ebx
je 0x40350f
push 3
call fcn.00405ea3
push 4
mov ebp, eax
call fcn.00405ea3
push 5
mov esi, eax
call fcn.00405ea3
cmp ebp, ebx
mov edi, eax
je 0x4034fb
cmp esi, ebx
je 0x4034fb
cmp edi, ebx
je 0x4034fb
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebp
test eax, eax
je 0x4034fb
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 0x40350f
push 9
call fcn.0040140b
mov eax, dword [0x7a1fac]
cmp eax, 0xffffffff
je 0x40351d
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
call dword [sym.imp.KERNEL32.dll_ExitProcess]