Some random code/data about the backdoor I found in my Linksys WAG200G (TCP/32764). If you don't understand something or want some details, feel free to fill an issue. The backdoor may be present in other hardware, I'll update this readme accordingly :) Probable source of the backdoor: - SerComm https://news.ycombinator.com/item?id=6998258 (nice finding :) ) Backdoor confirmed in: - Linksys WAG200G - Netgear DM111Pv2 (https://twitter.com/eguaj/status/418143024019816448) - Linksys WAG320N (http://zaufanatrzeciastrona.pl/post/smieszna-tylna-furtka-w-ruterach-linksysa-i-prawdopodobnie-netgeara/) - Linksys WAG54G2 (https://twitter.com/_xistence/status/418616691040350208) - DGN1000[B] Netgear N150 (elvanderb#3) - Netgear DG834G V2 firmware 4.01.40 (thanks Burn2 Dev) - Diamond DSL642WLG / SerComm IP806Gx v2 TI (https://news.ycombinator.com/item?id=6998682) - Linksys WAG120N (https://twitter.com/p_w999/status/418856260973252608/photo/1) - Cisco WAP4410N (elvanderb#11 (comment)) - Linksys WAG160n (https://twitter.com/xxchinasaurxx/status/418886166700507136) - LevelOne WBR3460B (http://www.securityfocus.com/archive/101/507219/30/0/threaded) - Netgear DGN3500 (elvanderb#13) - NetGear DG834 v3 (thanks jd) Backdoor may be present in: - Netgear DG934 [probability: 99.99%] (http://codeinsecurity.wordpress.com/category/reverse-engineering/) - Netgear WPNT834 (http://forum1.netgear.com/showthread.php?p=270354) - Netgear WG602, WGR614 (v3 doesn't work, maybe others...), DGN2000 (http://zaufanatrzeciastrona.pl/post/smieszna-tylna-furtka-w-ruterach-linksysa-i-prawdopodobnie-netgeara/) - Linksys WAG160N, WRVS4400N (http://zaufanatrzeciastrona.pl/post/smieszna-tylna-furtka-w-ruterach-linksysa-i-prawdopodobnie-netgeara/) - all SerComm manufactured devices (https://news.ycombinator.com/item?id=6998258) Backdoor is not working in: - Netgear WGR614v7 (thanks "Martin from germany" [your e-mail doesn't work]) - Netgear WNDR3700 (https://twitter.com/juliengrenier/status/418748575842304000) - Netgear CG3100 (elvanderb#6) - Netgear WGR614v9 (elvanderb#7) - Linksys WRT54GS v1.52.8 build 001 (thanks Helmut Tessarek) - Linksys WRT54GL(v1.1) Firmware v4.30.16 - Netgear WGR614v3 (elvanderb#8) - Netgear WNDR4500 (https://twitter.com/TechnicalRah/status/418826996873834496) - Netgear WNDR4000 (elvanderb#10) - Netgear R7000 (https://twitter.com/LRFLEW/status/418856141032935424) - Netgear R6300 (elvanderb#15) - Netgear WN2500RP (elvanderb#15) - Linksys E3000 fwv 1.0.04 (elvanderb#16) - Netgear VMDG480 (aka. VirginMedia SuperHub) swv 2.38.01 (elvanderb#16) - Netgear VMDG485 (aka. VirginMedia SuperHub 2) swv1.01.26 (elvanderb#16) - Cisco E2000 fwv 1.0.02 (elvanderb#17) Some clarifications: I didn't want to lose my time in writing a full report, it's a very simple backdoor that really doesn't deserve more than some crappy slides. Moreover, my English is quite bad I had a lot of fun in writing / drawing those slides, all the necessary informations are in them, if people don't understand them or find them "too full of meme" then - well - it's too bad for them :)