Function at 0x40fcff
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.00410c03
xor ebx, ebx
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
mov ecx, 0x44ea78
call fcn.00411bee
mov esi, 0x7000
push esi
push ebx
mov edi, 0x439ce0
push edi
call fcn.0041a270
add esp, 0xc
call dword [sym.imp.KERNEL32.dll_GetCommandLineW]
mov dword [ebp - 8], eax
cmp eax, ebx
je 0x40fdb3
push eax
call fcn.0040d4f7
cmp byte [0x440d39], bl
je 0x40fda5
push str.winrarsfxmappingfile.tmp
push ebx
push 4
call dword [sym.imp.KERNEL32.dll_OpenFileMappingW]
mov dword [ebp - 8], eax
cmp eax, ebx
je 0x40fd9a
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 0x40fd91
push esi
push eax
push edi
call fcn.0041bce0
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 0x40fdb3
push dword [ebp - 8]
push str.sfxcmd
call dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableW]
push 0x800
mov esi, 0x438ce0
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 [0x432a6c], edi
mov dword [0x432a70], edi
call dword [sym.imp.USER32.dll_LoadIconW]
push 0x65
push dword [0x432a70]
mov dword [0x438cdc], eax
call dword [sym.imp.USER32.dll_LoadBitmapW]
lea ecx, [ebp - 0xc]
mov dword [0x438cd8], eax
call fcn.00419aaf
push esi
mov ecx, 0x432a84
call fcn.0040c220
lea ecx, [ebp - 0x5c]
call fcn.00418daa
lea ecx, [ebp - 0x34]
call fcn.00418daa
push 0x64
call fcn.0040d0f3
push 0x64
mov dword [ebp - 0x40], eax
call fcn.0040d0f3
push ebx
push 0x40f477
mov dword [ebp - 0x18], eax
push ebx
lea eax, [ebp - 0x5c]
mov dword [0x437cd4], eax
push str.STARTDLG
lea eax, [ebp - 0x34]
push edi
mov dword [0x437cd0], eax
call dword [sym.imp.USER32.dll_DialogBoxParamW]
lea ecx, [ebp - 0x34]
mov dword [0x437cd0], ebx
mov dword [0x437cd4], ebx
call fcn.00418dcc
lea ecx, [ebp - 0x5c]
call fcn.00418dcc
lea ecx, [ebp - 0xc]
call fcn.00419b09
cmp byte [0x440d30], bl
je 0x40fe92
call fcn.0040d742
mov ecx, 0x44c2e0
call fcn.0040cf5b
cmp dword [0x440d14], ebx
jbe 0x40feb0
push dword [0x440d08]
call fcn.00419f56
pop ecx
push dword [0x438cdc]
mov esi, dword [sym.imp.GDI32.dll_DeleteObject]
call esi
mov eax, dword [0x438cd8]
cmp eax, ebx
je 0x40feca
push eax
call esi
cmp dword [0x432a74], ebx
jne 0x40fee9
cmp byte [0x440cf2], bl
je 0x40fee9
push 0xff
mov ecx, 0x432a74
call fcn.00406455
mov eax, dword [0x440d24]
mov byte [0x440cf2], 1
cmp eax, ebx
je 0x40feff
push eax
call fcn.0040d703
mov eax, dword [0x440d20]
cmp eax, ebx
je 0x40ff0f
push eax
call dword [sym.imp.KERNEL32.dll_Sleep]
call dword [sym.imp.ole32.dll_OleUninitialize]
mov eax, dword [0x440d1c]
pop edi
pop esi
cmp eax, ebx
pop ebx
ja 0x40ff26
mov eax, dword [0x432a74]
leave
ret 0x10