Function at 0x403644
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, 0x2d4
push ebx
push ebp
push esi
push edi
push 0x20
xor ebp, ebp
pop esi
mov dword [esp + 0x14], ebp
mov dword [esp + 0x10], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
mov dword [esp + 0x1c], 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 [0x4377b8], eax
call fcn.004067fe
mov dword [0x437704], eax
push ebp
lea eax, [esp + 0x34]
push 0x2b4
push eax
push ebp
push 0x42c200
call dword [sym.imp.SHELL32.dll_SHGetFileInfoW]
push str.NSIS_Error
push 0x436700
call fcn.004062e1
call dword [sym.imp.KERNEL32.dll_GetCommandLineW]
mov ebx, 0x442000
push eax
push ebx
call fcn.004062e1
push ebp
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
cmp word [0x442000], 0x22
mov dword [0x437700], eax
mov eax, ebx
jne 0x4036e4
push 0x22
mov eax, 0x442002
pop esi
push esi
push eax
call fcn.00405d76
push eax
call dword [sym.imp.USER32.dll_CharNextW]
mov dword [esp + 0x18], eax
jmp 0x4037c4
push 0x20
pop edx
cmp cx, dx
jne 0x40370a
inc eax
inc eax
cmp word [eax], dx
je 0x403703
cmp word [eax], 0x22
mov esi, edx
jne 0x403717
inc eax
push 0x22
inc eax
pop esi
cmp word [eax], 0x2f
jne 0x4037b5
inc eax
inc eax
cmp word [eax], 0x53
jne 0x403741
mov cx, word [eax + 2]
cmp cx, dx
je 0x403737
cmp cx, bp
jne 0x403741
mov dword [0x4377a0], 1
movzx ecx, word [0x40af2e]
movzx edi, word [str.NCRC]
mov edx, dword [eax]
shl ecx, 0x10
or ecx, edi
cmp edx, ecx
jne 0x403786
movzx ecx, word [0x40af32]
movzx edi, word [0x40af30]
shl ecx, 0x10
or ecx, edi
cmp dword [eax + 4], ecx
jne 0x403786
mov cx, word [eax + 8]
cmp cx, 0x20
je 0x403781
cmp cx, bp
jne 0x403786
or dword [esp + 0x1c], 4
movzx ecx, word [0x40af22]
movzx edi, word [str.__D]
shl ecx, 0x10
or ecx, edi
cmp dword [eax - 4], ecx
jne 0x4037b5
movzx ecx, word [0x40af26]
movzx edi, word [0x40af24]
shl ecx, 0x10
or ecx, edi
cmp edx, ecx
je 0x4037d2
push esi
push eax
call fcn.00405d76
cmp word [eax], 0x22
jne 0x4037c4
inc eax
inc eax
mov cx, word [eax]
cmp cx, bp
jne 0x4036fb
jmp 0x4037e4
mov word [eax - 4], bp
add eax, 4
push eax
push 0x442800
call fcn.004062e1
mov esi, dword [sym.imp.KERNEL32.dll_GetTempPathW]
mov edi, 0x444800
push edi
push 0x400
call esi
call fcn.00403610
test eax, eax
jne 0x403856
push 0x3fb
push edi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryW]
push str.Temp
push edi
call sub.KERNEL32.dll_lstrcatW
call fcn.00403610
test eax, eax
jne 0x403856
push edi
push 0x3fc
call esi
push 0x40af0c
push edi
call sub.KERNEL32.dll_lstrcatW
mov esi, dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableW]
push edi
push str.TEMP
call esi
push edi
push 0x40aef8
call esi
call fcn.00403610
test eax, eax
je 0x40390d
push 0x444000
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
push dword [esp + 0x1c]
call fcn.00403163
cmp eax, ebp
mov dword [esp + 0x10], eax
jne 0x40390d
cmp dword [0x43771c], ebp
je 0x4038f6
push ebp
push ebx
call fcn.00405d76
mov esi, eax
cmp esi, ebx
jb 0x4038c0
movzx eax, word [0x40aeee]
movzx ecx, word [str.___]
shl eax, 0x10
or eax, ecx
cmp dword [esi], eax
jne 0x4038ba
movzx ecx, word [0x40aef2]
movzx edx, word [0x40aef0]
shl ecx, 0x10
or ecx, edx
cmp dword [esi + 4], ecx
je 0x4038c0
dec esi
dec esi
cmp esi, ebx
jae 0x40389e
cmp esi, ebx
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x403938
mov word [esi], bp
add esi, 8
push esi
call fcn.00405e51
test eax, eax
je 0x40390d
push esi
push 0x442800
call fcn.004062e1
push esi
push 0x443000
call fcn.004062e1
mov dword [esp + 0x10], ebp
or dword [0x4377ac], 0xffffffff
call fcn.00403bae
push 1
mov dword [esp + 0x18], eax
call fcn.00406624
call fcn.00403ab3
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebp
je 0x403a18
push 0x200010
push dword [esp + 0x14]
call fcn.00405a6f
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
push str.nsu.tmp
push edi
call sub.KERNEL32.dll_lstrcatW
mov esi, 0x443800
push esi
push edi
call dword [sym.imp.KERNEL32.dll_lstrcmpiW]
test eax, eax
je 0x40390d
push ebp
push edi
call dword [sym.imp.KERNEL32.dll_CreateDirectoryW]
push edi
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryW]
cmp word [0x442800], bp
jne 0x403977
push esi
push 0x442800
call fcn.004062e1
push dword [esp + 0x18]
push section..ndata
call fcn.004062e1
movzx eax, word [0x40aed2]
movzx ecx, word [0x40aed0]
shl eax, 0x10
or eax, ecx
push 0x1a
mov dword [0x438800], eax
pop ebx
mov esi, 0x42ba00
mov eax, dword [0x437710]
push dword [eax + 0x120]
push esi
call fcn.00406303
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
cmp dword [esp + 0x10], ebp
je 0x403a02
push 1
push esi
push 0x445800
call dword [sym.imp.KERNEL32.dll_CopyFileW]
test eax, eax
je 0x403a02
push ebp
push esi
call fcn.0040617b
mov eax, dword [0x437710]
push dword [eax + 0x124]
push esi
call fcn.00406303
push esi
call fcn.00405a0e
cmp eax, ebp
je 0x403a02
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebp
inc word [0x438800]
dec ebx
jne 0x4039a5
push ebp
push edi
call fcn.0040617b
jmp 0x40390d
cmp dword [0x437794], ebp
je 0x403a9b
push 3
call fcn.004067fe
push 4
mov ebx, eax
call fcn.004067fe
push 5
mov esi, eax
call fcn.004067fe
cmp ebx, ebp
mov edi, eax
je 0x403a87
cmp esi, ebp
je 0x403a87
cmp edi, ebp
je 0x403a87
lea eax, [esp + 0x18]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebx
test eax, eax
je 0x403a87
lea eax, [esp + 0x24]
push eax
push str.SeShutdownPrivilege
push ebp
call esi
push ebp
push ebp
lea eax, [esp + 0x28]
push ebp
push eax
push ebp
push dword [esp + 0x2c]
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 0x403a9b
push 9
call fcn.0040140b
mov eax, dword [0x4377ac]
cmp eax, 0xffffffff
je 0x403aa9
mov dword [esp + 0x14], eax
push dword [esp + 0x14]
call dword [sym.imp.KERNEL32.dll_ExitProcess]