Function at 0x40b43b
Capabilities:
Accept command line arguments
Read file via mapping
Set environment variable

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x5c
push ebx
push esi
push edi
push 1
call fcn.0040b994
xor ebx, ebx
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
mov ecx, 0x44d108
call fcn.0040c1cb
mov esi, 0x7000
push esi
push ebx
mov edi, 0x4385c8
push edi
call fcn.0040d3d0
add esp, 0xc
call dword [sym.imp.KERNEL32.dll_GetCommandLineW]
mov dword [ebp - 8], eax
cmp eax, ebx
je 0x40b4ef
push eax
call fcn.00408d2d
cmp byte [0x43f639], bl
je 0x40b4e1
push str.winrarsfxmappingfile.tmp
push ebx
push 4
call dword [sym.imp.KERNEL32.dll_OpenFileMappingW]
mov dword [ebp - 8], eax
cmp eax, ebx
je 0x40b4d6
push esi
push ebx
push ebx
push 4
push eax
call dword [sym.imp.KERNEL32.dll_MapViewOfFile]
mov dword [ebp - 4], eax
cmp eax, ebx
je 0x40b4cd
push esi
push eax
push edi
call fcn.0040dbf0
add esp, 0xc
push edi
push str.sfxcmd
call dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableW]
push dword [ebp - 4]
call dword [sym.imp.KERNEL32.dll_UnmapViewOfFile]
push dword [ebp - 8]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
jmp 0x40b4ef
push dword [ebp - 8]
push str.sfxcmd
call dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableW]
push 0x800
mov esi, 0x4375c8
push esi
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameW]
push esi
push str.sfxname
call dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableW]
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
mov edi, eax
push 0x64
push edi
mov dword [0x43f5cc], edi
mov dword [0x43f5d8], edi
call dword [sym.imp.USER32.dll_LoadIconW]
push 0x65
push dword [0x43f5d8]
mov dword [0x4375c4], eax
call dword [sym.imp.USER32.dll_LoadBitmapW]
lea ecx, [ebp - 0xc]
mov dword [0x4375c0], eax
call fcn.0040d2ec
push esi
mov ecx, 0x43f61c
call fcn.0040839f
lea ecx, [ebp - 0x5c]
call fcn.0040c5e9
lea ecx, [ebp - 0x34]
call fcn.0040c5e9
push 0x64
call fcn.00408871
push 0x64
mov dword [ebp - 0x40], eax
call fcn.00408871
push ebx
push 0x40abb3
mov dword [ebp - 0x18], eax
push ebx
lea eax, [ebp - 0x5c]
mov dword [0x4365bc], eax
push str.STARTDLG
lea eax, [ebp - 0x34]
push edi
mov dword [0x4365b8], eax
call dword [sym.imp.USER32.dll_DialogBoxParamW]
lea ecx, [ebp - 0x34]
mov dword [0x4365b8], ebx
mov dword [0x4365bc], ebx
call fcn.0040c60b
lea ecx, [ebp - 0x5c]
call fcn.0040c60b
lea ecx, [ebp - 0xc]
call fcn.0040d346
cmp byte [0x43f630], bl
je 0x40b5ce
call fcn.00408f78
mov ecx, 0x44abe8
call fcn.00408614
cmp dword [0x43f604], ebx
jbe 0x40b5ec
push dword [0x43f5f8]
call fcn.0040d4eb
pop ecx
push dword [0x4375c4]
mov esi, dword [sym.imp.GDI32.dll_DeleteObject]
call esi
mov eax, dword [0x4375c0]
cmp eax, ebx
je 0x40b606
push eax
call esi
cmp dword [0x44173c], ebx
jne 0x40b625
cmp byte [0x43f5e2], bl
je 0x40b625
push 0xff
mov ecx, 0x44173c
call fcn.0040161c
mov eax, dword [0x43f614]
mov byte [0x43f5e2], 1
cmp eax, ebx
je 0x40b63b
push eax
call fcn.00408f39
mov eax, dword [0x43f610]
cmp eax, ebx
je 0x40b64b
push eax
call dword [sym.imp.KERNEL32.dll_Sleep]
call dword [sym.imp.ole32.dll_OleUninitialize]
mov eax, dword [0x43f60c]
pop edi
pop esi
cmp eax, ebx
pop ebx
ja 0x40b662
mov eax, dword [0x44173c]
leave
ret 0x10