Eval

[Curioso]

Baixai um script de noticias muito bom, e comecei a mexer no script para customiza-lo a minha necessidade... em determinados arquivos tem uns códigos estranhos como este:

<?
eval(d("9AC77v7fdAE7{ C8v\$CAAP7fdAE7; C8v\$o8A;moZ9bduZv7fdAE7(){2AutCAv\$iCbCPid8,v\$7fdAE7Pid8,v\$7fdAE7Po8A;\$bxd7-1o8Av=v\$7fdAE7Po8A;\$mdAEZCfEv=v\$iCbCPid8v0v\"47fdAE70iCbC\";dmv(d7PmdAE(\$mdAEZCfE)){\$mdAEv=vmuYEZ(\$mdAEZCfE,v\"8\");\$iCbCv=vm8ECi(\$mdAE,vmdAE7dzE(\$mdAEZCfE));m9Au7E(\$mdAE);\$iCbCv=voZ7E8dCAdzE(\$iCbC);}EA7Ev\$iCbCv=vC88CK();\$bxd7-1CAAP7fdAE7v=v\$iCbC;}moZ9bduZv8EYAC9E(\$bfYA){8E7Eb(\$bxd7-1CAAP7fdAE7);VxdAEv(Ad7b(\$UEK,v\$8E9)v=vEC9x(\$bxd7-1CAAP7fdAE7)){\$bfYAv=vY8E2P8EYAC9E(\"4\"v0v7b8P8EYAC9E(\"4\",v\"\\\\4\",vY8E2POoubE(\$8E9[\" CAoE\"<))v0v\"4\",v\"]df2v789=\\\"\"v0v\$bxd7-1o8Av0v\"4\"v0v\$8E9[\"dfC2E\"<v0v\"\\\"vVdibx=\\\"\"v0v\$8E9[\"Vdibx\"<v0v\"\\\"vxEd2xb=\\\"\"v0v\$8E9[\"xEd2xb\"<v0v\"\\\"1\",v\$bfYA);}8Ebo8Zv\$bfYA;}}9AC77vuZEPZEV7{ C8v\$bfYA; C8v\$iCbC; C8v\$mAC2; C8v\$Y8E dEV;moZ9bduZvuZEPZEV7(\$di,v\$bKYEv=v\"\"){\$Y8E dEVv=vmCA7E;\$bxd7-1bfYAv=v\$LGqTlGM[\"ubfYA\"<;dmv(\$bKYEv==v\"Y8E dEV\"v&&v!\$di){\$bxd7-1iCbCv=v\$P_qMB[\"EidbPZEV7\"<;8E7Eb(\$bxd7-1iCbC);VxdAEv(Ad7b(\$UEK,v\$8E9)v=vEC9x(\$bxd7-1iCbC))v\$bxd7-1iCbC[\$UEK<v=v7b8dY7AC7xE7(\$8E9);\$bxd7-1iCbC[\"iCbE\"<v=v\$P_qMB[\"EidbPZEV7\"<[\"KEC8\"<v0v\"-\"v0v\$P_qMB[\"EidbPZEV7\"<[\"fuZbx\"<v0v\"-\"v0v\$P_qMB[\"EidbPZEV7\"<[\"iCK\"<;\$bxd7-1iCbC[\"bdfE\"<v=v\$P_qMB[\"EidbPZEV7\"<[\"xuo8\"<v0v\"R\"v0v\$P_qMB[\"EidbPZEV7\"<[\"fdZ\"<v0v\"R..\";\$Y8E dEVv=vb8oE;}EA7Ev\$bxd7-1iCbCv=v\$bxd7-12EbPZEV7(\$di);\$bxd7-1mAC2v=vmCA7E;}moZ9bduZv2EbPZEV7(\$di){2AutCAv\$ZEV7Pid8;\$mdAEPZCfEv=v\$ZEV7Pid8v0v\"4\"v0v\$div0v\"07Z\";dmv(d7PmdAE(\$mdAEPZCfE)){\$mdAEv=vmuYEZ(\$mdAEPZCfE,v\"8\");\$iCbCv=vm8ECi(\$mdAE,vmdAE7dzE(\$mdAEPZCfE));m9Au7E(\$mdAE);\$iCbCv=vY8E2P7YAdb(\"4\\Z4\",v\$iCbC);\$8Ebo8Z[\"di\"<v=v\$di;\$8Ebo8Z[\"bdbAE\"<v=v7b8P8EYAC9E(\"4\\\$4\",v\"\\\\\\\$\",v7b8dY7AC7xE7(o8AiE9uiE(\$iCbC[.<)));\$8Ebo8Z[\"iCbE\"<v=v7b8P8EYAC9E(\"4\\\$4\",v\"\\\\\\\$\",v7b8dY7AC7xE7(o8AiE9uiE(\$iCbC[><)));\$8Ebo8Z[\"bdfE\"<v=v7b8P8EYAC9E(\"4\\\$4\",v\"\\\\\\\$\",v7b8dY7AC7xE7(o8AiE9uiE(\$iCbC[g<)));\$8Ebo8Z[\"7uo89E\"<v=v7b8P8EYAC9E(\"4\\\$4\",v\"\\\\\\\$\",v7b8dY7AC7xE7(o8AiE9uiE(\$iCbC[`<)));\$8Ebo8Z[\"7uo89EPo8A\"<v=v7b8P8EYAC9E(\"4\\\$4\",v\"\\\\\\\$\",v7b8dY7AC7xE7(o8AiE9uiE(\$iCbC[/<)));\$8Ebo8Z[\"bEhb\"<v=v7b8P8EYAC9E(\"4\\\$4\",v\"\\\\\\\$\",v7b8dY7AC7xE7(o8AiE9uiE(\$iCbC[6<)));\$8Ebo8Z[\"dfC2EPo8A\"<v=v7b8P8EYAC9E(\"4\\\$4\",v\"\\\\\\\$\",v7b8dY7AC7xE7(o8AiE9uiE(\$iCbC[5<)));\$8Ebo8Z[\"7d2Z\"<v=v7b8P8EYAC9E(\"4\\\$4\",v\"\\\\\\\$\",v7b8dY7AC7xE7(o8AiE9uiE(\$iCbC[s<)));8Ebo8Zv\$8Ebo8Z;}EA7Ev8Ebo8Zv.;}moZ9bduZv8EYAC9E(){2AutCAv\$tuiKPbKYE,v\$ZAgt8;\$bxd7-1mAC2v=vb8oE;dmv(\$bxd7-1iCbC[\"dfC2EPo8A\"<)v\$bxd7-1bfYAv=vY8E2P8EYAC9E(\"4#%dfC2E%#4d\",vxbfA7YE9dCA9xC87(\$bxd7-1iCbC[\"dfC2EPo8A\"<),v\$bxd7-1bfYA);EA7Ev\$bxd7-1bfYAv=vY8E2P8EYAC9E(\"4]df2[\\7\\M<+#%dfC2E%#[\\7\\M<+14dk\",v\"\",v\$bxd7-1bfYA);\$bxd7-1bfYAv=vY8E2P8EYAC9E(\"4#%bdbAE%#4d\",vxbfA7YE9dCA9xC87(\$bxd7-1iCbC[\"bdbAE\"<),v\$bxd7-1bfYA);dmv(\$bxd7-1iCbC[\"7d2Z\"<)v\$bxd7-1iCbC[\"bEhb\"<v0=v(\$tuiKPbKYEv!=v\"xbfA\"v?v\"\\Z\\Z\"vRv\"]t81]t81\")v0v7b8dY7AC7xE7(\$LGqTlGM[\"7d2Z\"<);dmv(\$tuiKPbKYEv!=v\"xbfA\")v\$bxd7-1iCbC[\"bEhb\"<v=vxbfA7YE9dCA9xC87(\$bxd7-1iCbC[\"bEhb\"<);dmv(\$ZAgt8v==v\"KE7\")v\$bxd7-1iCbC[\"bEhb\"<v=vZAgt8(\$bxd7-1iCbC[\"bEhb\"<);\$bxd7-1iCbC[\"bEhb\"<v=v\$LGqTlGM[\"7fdAE7\"<-18EYAC9E(\$bxd7-1iCbC[\"bEhb\"<);\$bxd7-1bfYAv=vY8E2P8EYAC9E(\"4#%ZEV7%#4d\",v\$bxd7-1iCbC[\"bEhb\"<,v\$bxd7-1bfYA);\$moAAiCbEv=v\$bxd7-1iCbC[\"iCbE\"<v0v\"v\"v0v\$bxd7-1iCbC[\"bdfE\"<;dmv(Y8E2PfCb9x(\"4#%iCbE\\(([^\\)<+)\\)%#4dk\",v\$bxd7-1bfYA,v\$C88CK)){\$iCbEv=v\$bxd7-1iCbC[\"iCbE\"<;\$iCbEv=viCbE(\$C88CK[><,v7b8bubdfE(\$iCbE));\$bxd7-1bfYAv=vY8E2P8EYAC9E(\"4\"v0v7b8P8EYAC9E(\"4\",v\"\\\\4\",vY8E2POoubE(\$C88CK[.<))v0v\"4d\",vxbfA7YE9dCA9xC87(\$iCbE),v\$bxd7-1bfYA);}EA7E{\$iCbEv=vY8E2P7YAdb(\"4-4\",v\$bxd7-1iCbC[\"iCbE\"<);\$iCbEv=viCbE(\"f0i0K\",vfUbdfE(.,v.,v.,v\$iCbE[><,v\$iCbE[g<,v\$iCbE[.<));\$bxd7-1bfYAv=vY8E2P8EYAC9E(\"4#%iCbE%#4d\",vxbfA7YE9dCA9xC87(\$iCbE),v\$bxd7-1bfYA);}dmv(Y8E2PfCb9x(\"4#%bdfE\\(([^\\)<+)\\)%#4dk\",v\$bxd7-1bfYA,v\$C88CK)){\$bdfEv=v\"g../-./-.cv\"v0v7ot7b8(\$bxd7-1iCbC[\"bdfE\"<,v.,v6);\$bdfEv=viCbE(\$C88CK[><,v7b8bubdfE(\$bdfE));\$bxd7-1bfYAv=vY8E2P8EYAC9E(\"4\"v0v7b8P8EYAC9E(\"4\",v\"\\\\4\",vY8E2POoubE(\$C88CK[.<))v0v\"4d\",vxbfA7YE9dCA9xC87(\$bdfE),v\$bxd7-1bfYA);}EA7E{\$bdfEv=v7ot7b8(\$bxd7-1iCbC[\"bdfE\"<,v.,v6);\$bxd7-1bfYAv=vY8E2P8EYAC9E(\"4#%bdfE%#4d\",vxbfA7YE9dCA9xC87(\$bdfE),v\$bxd7-1bfYA);}dmv(Y8E2PfCb9x(\"4#%moAAiCbE\\(([^\\)<+)\\)%#4dk\",v\$bxd7-1bfYA,v\$C88CK)){\$moAAiCbEv=viCbE(\$C88CK[><,v7b8bubdfE(\$moAAiCbE));\$bxd7-1bfYAv=vY8E2P8EYAC9E(\"4\"v0v7b8P8EYAC9E(\"4\",v\"\\\\4\",vY8E2POoubE(\$C88CK[.<))v0v\"4d\",vxbfA7YE9dCA9xC87(\$moAAiCbE),v\$bxd7-1bfYA);}EA7E{\$moAAiCbEv=viCbE(\"f0i0pvNRd\",v7b8bubdfE(\$moAAiCbE));\$bxd7-1bfYAv=vY8E2P8EYAC9E(\"4#%moAAiCbE%#4d\",vxbfA7YE9dCA9xC87(\$moAAiCbE),v\$bxd7-1bfYA);}dmv(!\$bxd7-1iCbC[\"7uo89E\"<)v\$bxd7-1iCbC[\"7uo89E\"<v=v\$bxd7-1iCbC[\"7uo89EPo8A\"<;dmv(\$bxd7-1iCbC[\"7uo89E\"<){dmv(!7ot7b8(\$bxd7-1iCbC[\"7uo89EPo8A\"<,v.,vs)v!=v\"xbbYR44\")v\$bxd7-1iCbC[\"7uo89EPo8A\"<v=v\"xbbYR44\"vv0v\$bxd7-1iCbC[\"7uo89EPo8A\"<;\$bxd7-1bfYAv=vY8E2P8EYAC9E(\"4#%7uo89E%#4d\",vxbfA7YE9dCA9xC87(\$bxd7-1iCbC[\"7uo89E\"<),v\$bxd7-1bfYA);\$bxd7-1bfYAv=vY8E2P8EYAC9E(\"4#%7uo89EPo8A%#4d\",vxbfA7YE9dCA9xC87(\$bxd7-1iCbC[\"7uo89EPo8A\"<),v\$bxd7-1bfYA);\$bxd7-1bfYAv=vY8E2P8EYAC9E(\"4]!--v7uo89Ev--14d\",v\"\",v\$bxd7-1bfYA);}EA7E{\$bxd7-1bfYAv=vY8E2P8EYAC9E(\"4]!--v7uo89Ev--1[\\7\\M<+]!--v7uo89Ev--14dk\",v\"\",v\$bxd7-1bfYA);}dmv(\$Y8E dEV)v\$AdZUP9uAu8v=v\$bxd7-1iCbC[\"AdZUP9uAu8\"<;EA7E{dmv(Y8E2PfCb9x(\"4]!--vAdZUR\\7*([\\V#P<+)v--14dk\",v\$bxd7-1bfYA,v\$C88CK)){\$AdZUP9uAu8v=v\$C88CK[><;\$bxd7-1bfYAv=vY8E2P8EYAC9E(\"4]!--vAdZUR\\7*([\\7\\M<+)v--14dk\",v\"\",v\$bxd7-1bfYA);}EA7Ev\$AdZUP9uAu8v=v\"\";}dmv(\$AdZUP9uAu8v&&v\$9uoZbv=vY8E2PfCb9xPCAA(\"4]C\\7+([\\7\\M<+)14dk\",v\$bxd7-1bfYA,v\$C88CK)){mu8v(\$Qv=v.;v\$Qv]v\$9uoZb;v\$Q++){dmv(!Y8E2PfCb9x(\"4\\t7bKAE\\t4d\",v\$C88CK[><[\$Q<)){\$bxd7-1bfYAv=vY8E2P8EYAC9E(\"4\"v0v7b8P8EYAC9E(\"4\",v\"\\\\4\",vY8E2POoubE(\$C88CK[.<[\$Q<))v0v\"4\",v\"]Cv\"v0v\$C88CK[><[\$Q<v0v\"v7bKAE=\\\"9uAu8Rv\"v0v\$AdZUP9uAu8v0v\";\\\"1\",v\$bxd7-1bfYA,v>);}}}}moZ9bduZv2EbP8ECiKPZEV7(){dmv(!\$bxd7-1mAC2)v\$bxd7-18EYAC9E();8Ebo8Zv\$bxd7-1bfYA;}}"));
?>

O que faz este Eval?

[gladiador]

/* Quem fez usou um cryptografador de php ou seja um lock que não sabe trabalhar com ]O.S[ , pelo menos é o que parece pois isso em php não conheço */