IMEIgen

Simple WPA-PSK default password candidates generator for mobile broadband WIFI routers, based on IMEI.

Background

In their conquest of more users, some ISPs and vendors tend to trade security for ease of use.

Default WIFI router passwords often use some of the device-bound constants like WAN MAC address, BSSID, serial number, or combination from those. The developers invent some (not so)sophisticated obfuscation algorithms or hash functions to generate the default WPA-PSK password.

When the device has mobile broadband interface there is another constant - the IMEI number. In its general form IMEI has 15 digits with the following form:

TAC	Serial	Check digit
TTTTTTTT	SSSSSS	C

When given device uses part of the IMEI for password and we know the TAC used, we can bruteforce 6-digit Serial and compute the Check digit with Luhn algorithm. In most cases, where vendors use the last 8 digits of the IMEI, we can shrink the password candidates keyspace 100 times.

Known devices

These devices were confirmed via various images, found on the Internet and validated against wpa-sec submissions. Please note that some models phased out this insecure password generation in their latest revisions and there may be more TACs used.

SSID mask	Model	TAC	Length	Notes
MW45AN_XXXX	TCL/Alcatel MW45AN	35042693	8
MobileRouter-XXXX	ThingsMatrix TMF08	35066291	8
MW45V_XXXX	TCL/Alcatel MW45V	35143020	8
MTS874FT_XXXX	Senseit MTS 874FT	35162910	8
VINNWiFi_XXXX[_5G]	TCL/Alcatel MW40V1	35178309 35784508	8
Optus E583C xxxx	Huawei E583C	35219704	8
MTS850FT-XXXX	Unitac/Oltrade LLC TPS MTS 850FT	35216407	8
BeelineS23_XXXX	Beeline S23	35232010	8
pocketwifi-xxxx	Huawei E585	35239804 35730904	8
VIVACOM 4G WiFi_XXXX[_5G]	TCL/Alcatel MW40V1	35240810	8
MW40V_XXXX	TCL/Alcatel MW40V1	35249110 35342609 35647811 35724307	8
Airtel 4G MiFi-XXXX	Vida Resources PTE Ltd VIDA M2 LTE ROUTER	35271710	8
MegaFonMR150-6_XXXX	WeWins MR150-6	35274110 35742110	8
SVITIN-XXXX	WeWins M09	35343011	8
MTN MiFi E5830S	Huawei E5830S	35410303	8
E5830-xxxx	Huawei E5830S	35410303	8
MTS8920FT_XXXX[_plus]	WeWins MTS 8920FT	35477311	8
XLGO-XXXX	MOVIMAX MV003	35497206	8
BeelineSM25_XXXX	Beeline SM25	35595810	8
MTS81020FTPB_XXXX	BQ Devices Limited BQ 81020FTPB	35622911	8
MW70VK_XXXX_[2.4G|5G]	TCL/Alcatel MW70VK	35700709	8
MTS81231FT_XXXX	Vobis/Highscreen Limited MTS 81231FT	35705982	8
MTS81220FT_XXXX	Vobis/Highscreen Limited MTS 81220FT	35717577	8
MobileWiFi-xxxx	Huawei E560	35750304	8	Used by Beeline
Optus E586 xxxx	Huawei E586	35750604	8
congstar.home_XXXX[_2.4G|_5G]	TCL/Alcatel HH71VM/HH40V	35834210 35848108	8
HH71VM_XXXX_[2.4G|5G]	TCL/Alcatel HH71VM	35834210	8
MTS872FT_XXXX	Senseit MTS 872FT	35844809	8
HH40V_XXXX	TCL/Alcatel HH40V	35848108	8
MTS8723FT_XXXX	Senseit MTS 8723FT	35861510	8
Beeline_XXXX	Beeline L02H	35978707	8
MTS81330FT_XXXX	Shenzhen Harvilon Technology MTS 81330FT	86013005	8
OptusWiFi E5331 xxxx	Huawei E5531	86066701	8
Globe_LTE MIFI_XXXX	YOUWIN M022T	86066701	8
inwi Home 4G XXXXXX	ZTE MF253V	86074303 86658004	8	Note the space after 4G
Andromax-M3Y-XXXX	Smartfren M26Z1H	86145803	8
MTS8330FT_XXXXXX	ZTE 8330FT MTS	86176605	8
MTS8213FT-XXXX	Huawei E5785Lh-22c MTS	86241803	8
Orange Airbox-XXXX	Huawei E5573	86259802 86395503 86742202	8
OLAX_LTE_dddd	Shenzhen Wanwei Yulian Technology Co Ltd. AX9 Pro B	86275506	8	The second half of the password is in the SSID
My Broadband-xxxx	Huawei E589	86303001	8
MTS835F_XXXXXX	ZTE MTS 835F	86307403	8
Connect4G	Huawei B593	86316801	11
MTS837F_XXXXXX	ZTE MTS 837F	86357703	8
TP-LINK_M5360_XXXXXX	TP-Link M5360	86382402	8
MTS81140FT_XXXX	Mobot Technology/Signalinks MTS 81140FT	86386605	8
VIVACOM 4G WI-FI	Huawei E5573s-320	86398103	8
TP-LINK_M5350_XXXXXX	TP-Link M5350	86401101	8
MTS831_XXXXXX	ZTE MF910/831FT MTS	86415402	8
ALTEL4G-XXXX[_5G]	Shanghai Notion Information Technology Co Ltd OpenTogether R28	86420805	8
Domino-XXXX	Huawei E5327 / ZTE MF63 CU	86434052 86637701	8	Huawei model uncertain
MTS838FT_XXXXXX[_2.4Gz]	ZTE 838FT	86477204	8
VIVACOM 3G WI-FI	Huawei E5330Bs-2	86570602	8
MTS8430FT_XXXX	Shenzhen ZhuiFengMa Technology Jiffma 8430FT MTS	86571004	8
imotowifiXXXXXX	Shanghai Notion Information Technology Co Ltd OpenTogether M028	86616703	8
SMILE 4G LTE-XXXX	Shanghai Notion Information Technology Co Ltd OpenTogether M028	86616703	8
ALTEL4G_XXXX ALTEL4G_dddd	Shanghai Notion Information Technology Co Ltd OpenTogether M022 / Shanghai Boosteven Technology Limited Youwin W02	86637403 86848203	8
ALTEL 4G_ddddddd ALTEL 4G_XXXXXXX	Shenzhen Aolifeng Communication Technology Co Ltd L800,L900,MINI5219,B209,GT-E3309 Aolifeng L800 / ZTE Corporation ZTE MF93D	86650302 86685501	8
HUAWEI-E5577-XXXX	Huawei E5577s-932	86685202	8	The SSID matches with other Huawei router sub-model, which use different default key generation algorithm
MTS833_XXXXXX	ZTE MF910/MF910W/MF900/Blade S6 Lite/MTS 833F	86688302	8
VIVA-4G-LTE-XXXX	Huawei E5577Cs-321	86726202	6	Prepend 'VIVA' to every candidate, eg. sed 's/^/VIVA/'. Practically doesn't reduce the keyspace
Orange-XXXX	Huawei E5577Cs-321	86726202	8	The SSID matches with other Orange routers, which use different default key generation algorithms
501HWa-XXXXXX	Huawei HWABJ1	86738102	7	Append 'a' to every candidate, eg. sed 's/$/a/'
MTS8212FT_XXXX	Huawei B315s-22	86796203	8
4G-Gateway-XXXX	Huawei B593	86803100	8
inwi Home 4GXXXXXX	Huawei B310s / Huawei B311-221	86846503 86918004	8	No space between 4G and the hex digits
ZTE MF90+ XXXXXX	ZTE MF90+	86852702	8
MTS411D_XXXX	TCT Mobile MTS 411D	86852702	8
MTS835FT_XXXXXX	ZTE MTS 835FT	86998103	8

Usage

$ git clone https://github.com/RealEnder/imeigen
$ cd imeigen
$ make
cc -O3 -Wall -Wextra -Wpedantic -o imeigen imeigen.c
$ ./imeigen
IMEIgen v0.1 (c) Alex Stanev <alex@stanev.org>
Usage: ./imeigen [[8-digit TAC|SSID] [right digits count, default 8] | list | all]

Example usage with hashcat:

$ ./imeigen 35240810 | hashcat -a0 -m22000 vivacom.22000
$ ./imeigen 501HWa-123456 | sed 's/$/a/' | hashcat -a0 -m22000 501HWa.22000

You can extract the right hashes with the excellent hcxtools:

$ hcxhashtool -i large_hashlist.22000 -o vivacom.22000 --essid-part "VIVACOM 4G WiFi"

Optional arguments

• list - prints all supported SSID masks and candidates lengths
• all - generates all possible candidates for supported TACs. There will be a lot of duplicates.

The ig-crack script

ig-crack script is used to extract the supported networks from a large collection of m22000 hashes, which are then passed to hashcat for cracking using the password candidates from imeigen. It accounts for the special cases, used by some vendors.

Contributing

Look at the label of your mobile broadband WIFI router and check if the default password is part of the IMEI. If this is the case and you can't find the device TAC on the list, please open an issue in this repository with the photo of the label. Many label photos can also be found on the Internet.

Submitting captures in wpa-sec DB is another way to contribute to WIFI security research. We advise you to use hcxdumptool for best results.

Tools

• wpa-sec - distributed WPA-PSK cracker database
• RouterKeygenPC - default keys generators for various WIFI routers
• hcxtools - small set of tools to detect weak points within WIFI networks by analyzing hashes and captures. Take a look on hcxpsktool
• hcxdumptool - sophisticated WIFI attack tool