makeivs-ng is part of the aircrack-ng package and is used to generate an IVS dump file with a given WEP key. The aim of the tool is to provide a way to create dumps with a known encryption key for testing.
makeivs-ng – generate a dummy IVS dump file with a specific WEP key
root@kali:~# makeivs-ng --help makeivs-ng 1.2 rc4 - (C) 2006-2015 Thomas d'Otreppe https://www.aircrack-ng.org usage: makeivs-ng [options] Common options: -b <bssid> : Set access point MAC address -f <num> : Number of first IV -k <key> : Target network WEP key in hex -s <num> : Seed used to setup random generator -w <file> : Filename to write IVs into -c <num> : Number of IVs to generate -d <num> : Percentage of dupe IVs -e <num> : Percentage of erroneous keystreams -l <num> : Length of keystreams -n : Ignores ignores weak IVs -p : Uses prng algorithm to generate IVs --help : Displays this usage screen
makeivs-ng Usage Example
Specify a BSSID (-b de:ad:be:ef:ca:fe), WEP key (-k 123456789ABCDEF123456789AB), and output filename (-w makeivs.ivs).
root@kali:~# makeivs-ng -b de:ad:be:ef:ca:fe -k 123456789ABCDEF123456789AB -w makeivs.ivs Creating 100000 IVs with 16 bytes of keystream each. Estimated filesize: 2.29 MB Using fake BSSID DE:AD:BE:EF:CA:FE Done.
root@kali:~# aircrack-ng makeivs.ivs Opening makeivs.ivs Read 100001 packets. # BSSID ESSID Encryption 1 DE:AD:BE:EF:CA:FE WEP (100000 IVs) Choosing first network as target. Opening makeivs.ivs Attack will be restarted every 5000 captured ivs. Starting PTW attack with 100000 ivs. Aircrack-ng 1.2 rc4 [00:00:00] Tested 621 keys (got 100000 IVs) KB depth byte(vote) 0 1/ 2 76(113152) 1E(111104) 48(109824) 1C(109568) A6(109568) 1 1/ 3 F5(112640) 06(111616) 33(111616) F4(111616) 05(111104) 2 0/ 2 31(137216) F9(113664) 76(113152) DC(110336) B9(109568) 3 10/ 3 E1(108800) 0A(108544) 34(108032) 3E(108032) 48(108032) 4 9/ 4 7D(109312) BA(109056) 5E(108800) D6(108800) 11(108288) KEY FOUND! [ 12:34:56:78:9A:BC:DE:F1:23:45:67:89:AB ] Decrypted correctly: 100%
Source:
Author: Thomas d’Otreppe, Original work: Christophe Devine
License: GPLv2