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[讨论]看了网络验证一节,有些疑惑,和大家讨论下~~~
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发表于: 2008-11-6 14:54 3981
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这一节最后,解除网络验证,用的是修改客户端程序,将包里的数据整合到程序当中去。
然后将截取到正确的数据复制到41ae68h~41aec1h,这里称之为正确的数据,是不是通过用户名:pediy,密码:bcdK9s2c8@1M7q4)9K6b7g2)9J5c8W2)9J5c8Y4N6%4N6#2)9J5k6i4m8W2k6r3W2&6i4K6u0W2j5$3!0E0i4@1g2r3i4@1u0o6i4K6S2o6i4@1f1%4i4K6R3J5i4@1t1&6i4@1f1#2i4K6R3%4i4@1u0n7i4@1f1$3i4@1t1K6i4@1p5^5i4@1f1#2i4K6R3$3i4K6S2o6i4@1g2r3i4@1u0o6i4K6S2o6i4@1f1#2i4@1u0q4i4K6V1%4i4@1f1#2i4K6R3^5i4@1t1H3i4@1f1^5i4@1u0r3i4K6V1@1i4@1f1#2i4K6W2n7i4K6W2q4i4@1f1#2i4K6S2o6i4K6R3#2i4@1f1%4i4K6W2m8i4K6R3@1i4@1f1$3i4K6V1#2i4@1t1H3i4@1f1$3i4K6S2p5i4@1q4q4i4@1f1$3i4K6R3&6i4K6S2p5i4@1f1$3i4K6V1^5i4@1q4r3i4@1f1$3i4@1q4p5i4@1p5K6i4@1f1%4i4@1p5I4i4@1q4q4i4@1f1%4i4K6W2m8i4K6R3@1i4@1g2r3i4@1u0o6i4K6W2r3i4@1f1#2i4@1t1H3i4@1t1I4i4@1f1$3i4@1q4p5i4@1p5@1i4@1f1#2i4K6R3I4i4K6R3%4i4@1f1^5i4@1q4q4i4@1u0q4i4K6N6q4i4K6N6q4i4K6N6q4
去掉send,照书上修改程序,将随机数读取到41ae76h;然后将recv函数跳过,将修改后的程序保存。
此时,是不是可以不开服务器程序,因为开着服务器程序,不可能会弹出“连接失败”的提示。而后书上列出修改的代码 00401496 jnz short 004014c1,实际上并没有修改,不知是不是勘误?改为jnz => jz?这样不管连不连服务器都不会弹出提示了。
好,继续思考下去,此时要达到书上的效果,当然是不开服务器程序。004016beh之后的验证肯定都没有问题,随机数也已修改好保存了,注册当然会成功。我的疑惑是:那既然不连接服务器程序,那咱们的服务器,也只是单纯的验证服务器,即:只是简单的验证一下用户名密码。而实际应用中,服务器可能就不仅仅只是验证了,在验证之后可能会有数据传输,照书上这么断开服务器是不是有些不妥?
呵呵,一下这么多问题,马上完了。我没有通过用户名:pediy,密码:a75K9s2c8@1M7q4)9K6b7g2)9J5c8W2)9J5c8Y4N6%4N6#2)9J5k6i4m8W2k6r3W2&6i4K6u0W2j5$3!0E0i4@1f1$3i4@1t1K6i4@1p5^5i4@1f1#2i4K6R3$3i4K6S2o6i4@1g2r3i4@1u0o6i4K6S2o6i4@1f1#2i4K6W2n7i4@1p5H3i4@1f1$3i4@1q4p5i4@1p5@1i4@1f1^5i4@1u0r3i4K6V1@1i4@1f1#2i4K6W2n7i4K6W2q4i4@1f1#2i4K6S2o6i4K6R3#2i4@1f1#2i4@1u0q4i4K6V1%4i4@1f1#2i4K6R3^5i4@1t1H3i4@1f1%4i4K6W2m8i4K6R3@1i4@1f1$3i4K6V1#2i4@1t1H3i4@1f1$3i4K6S2p5i4@1q4q4i4@1f1@1i4@1t1^5i4K6S2p5i4@1f1$3i4@1q4p5i4@1p5K6i4@1f1%4i4@1p5I4i4@1q4q4i4@1g2r3i4@1u0o6i4K6S2o6x3o6l9@1x3o6p5$3j5X3g2Z5i4@1f1@1i4@1t1&6i4K6S2n7i4@1f1#2i4K6V1H3i4K6S2q4i4@1f1%4i4K6W2m8i4K6R3@1i4@1f1&6i4@1q4m8i4K6S2o6i4@1f1^5i4@1q4r3i4K6R3I4i4@1f1$3i4K6V1^5i4@1q4r3i4@1f1@1i4@1t1^5i4K6S2p5i4@1f1$3i4K6V1^5i4@1q4r3i4@1f1#2i4K6S2r3i4@1q4r3i4@1f1@1i4@1u0n7i4@1p5#2i4@1f1$3i4K6W2o6i4K6R3&6i4@1f1@1i4@1t1^5i4@1p5@1i4@1f1%4i4@1p5%4i4K6S2p5i4@1f1^5i4@1p5%4i4@1p5K6i4@1f1#2i4K6R3$3i4@1t1K6i4@1f1$3i4K6V1$3i4@1t1&6i4@1f1$3i4@1t1K6i4K6V1#2i4@1g2r3i4@1u0o6i4K6W2r3i4@1f1@1i4@1t1^5i4K6R3H3i4@1f1%4i4@1p5%4i4K6S2p5i4@1f1#2i4K6W2o6i4@1p5^5x3o6l9@1x3o6p5$3y4e0f1`. 直接跳转到00401721,让它注册成功;另一种比较麻烦,还是照书上跳过recv和解密,到004016beh之后的验证,将它验证的几个地址里所存的数据事先在内存中相应的位置修改好,让它们和所比较的数分别相等,这样就不会跳到40174ah,即验证失败,因此,此时不管我输入任何用户名和密码,都会注册成功?
真是本好书,一页的内容,我反复思考了大半天,或许这是菜鸟必走之路。
欢迎大家一起讨论,有不足之处,还请指出,谢谢!
然后将截取到正确的数据复制到41ae68h~41aec1h,这里称之为正确的数据,是不是通过用户名:pediy,密码:bcdK9s2c8@1M7q4)9K6b7g2)9J5c8W2)9J5c8Y4N6%4N6#2)9J5k6i4m8W2k6r3W2&6i4K6u0W2j5$3!0E0i4@1g2r3i4@1u0o6i4K6S2o6i4@1f1%4i4K6R3J5i4@1t1&6i4@1f1#2i4K6R3%4i4@1u0n7i4@1f1$3i4@1t1K6i4@1p5^5i4@1f1#2i4K6R3$3i4K6S2o6i4@1g2r3i4@1u0o6i4K6S2o6i4@1f1#2i4@1u0q4i4K6V1%4i4@1f1#2i4K6R3^5i4@1t1H3i4@1f1^5i4@1u0r3i4K6V1@1i4@1f1#2i4K6W2n7i4K6W2q4i4@1f1#2i4K6S2o6i4K6R3#2i4@1f1%4i4K6W2m8i4K6R3@1i4@1f1$3i4K6V1#2i4@1t1H3i4@1f1$3i4K6S2p5i4@1q4q4i4@1f1$3i4K6R3&6i4K6S2p5i4@1f1$3i4K6V1^5i4@1q4r3i4@1f1$3i4@1q4p5i4@1p5K6i4@1f1%4i4@1p5I4i4@1q4q4i4@1f1%4i4K6W2m8i4K6R3@1i4@1g2r3i4@1u0o6i4K6W2r3i4@1f1#2i4@1t1H3i4@1t1I4i4@1f1$3i4@1q4p5i4@1p5@1i4@1f1#2i4K6R3I4i4K6R3%4i4@1f1^5i4@1q4q4i4@1u0q4i4K6N6q4i4K6N6q4i4K6N6q4
去掉send,照书上修改程序,将随机数读取到41ae76h;然后将recv函数跳过,将修改后的程序保存。
此时,是不是可以不开服务器程序,因为开着服务器程序,不可能会弹出“连接失败”的提示。而后书上列出修改的代码 00401496 jnz short 004014c1,实际上并没有修改,不知是不是勘误?改为jnz => jz?这样不管连不连服务器都不会弹出提示了。
好,继续思考下去,此时要达到书上的效果,当然是不开服务器程序。004016beh之后的验证肯定都没有问题,随机数也已修改好保存了,注册当然会成功。我的疑惑是:那既然不连接服务器程序,那咱们的服务器,也只是单纯的验证服务器,即:只是简单的验证一下用户名密码。而实际应用中,服务器可能就不仅仅只是验证了,在验证之后可能会有数据传输,照书上这么断开服务器是不是有些不妥?
呵呵,一下这么多问题,马上完了。我没有通过用户名:pediy,密码:a75K9s2c8@1M7q4)9K6b7g2)9J5c8W2)9J5c8Y4N6%4N6#2)9J5k6i4m8W2k6r3W2&6i4K6u0W2j5$3!0E0i4@1f1$3i4@1t1K6i4@1p5^5i4@1f1#2i4K6R3$3i4K6S2o6i4@1g2r3i4@1u0o6i4K6S2o6i4@1f1#2i4K6W2n7i4@1p5H3i4@1f1$3i4@1q4p5i4@1p5@1i4@1f1^5i4@1u0r3i4K6V1@1i4@1f1#2i4K6W2n7i4K6W2q4i4@1f1#2i4K6S2o6i4K6R3#2i4@1f1#2i4@1u0q4i4K6V1%4i4@1f1#2i4K6R3^5i4@1t1H3i4@1f1%4i4K6W2m8i4K6R3@1i4@1f1$3i4K6V1#2i4@1t1H3i4@1f1$3i4K6S2p5i4@1q4q4i4@1f1@1i4@1t1^5i4K6S2p5i4@1f1$3i4@1q4p5i4@1p5K6i4@1f1%4i4@1p5I4i4@1q4q4i4@1g2r3i4@1u0o6i4K6S2o6x3o6l9@1x3o6p5$3j5X3g2Z5i4@1f1@1i4@1t1&6i4K6S2n7i4@1f1#2i4K6V1H3i4K6S2q4i4@1f1%4i4K6W2m8i4K6R3@1i4@1f1&6i4@1q4m8i4K6S2o6i4@1f1^5i4@1q4r3i4K6R3I4i4@1f1$3i4K6V1^5i4@1q4r3i4@1f1@1i4@1t1^5i4K6S2p5i4@1f1$3i4K6V1^5i4@1q4r3i4@1f1#2i4K6S2r3i4@1q4r3i4@1f1@1i4@1u0n7i4@1p5#2i4@1f1$3i4K6W2o6i4K6R3&6i4@1f1@1i4@1t1^5i4@1p5@1i4@1f1%4i4@1p5%4i4K6S2p5i4@1f1^5i4@1p5%4i4@1p5K6i4@1f1#2i4K6R3$3i4@1t1K6i4@1f1$3i4K6V1$3i4@1t1&6i4@1f1$3i4@1t1K6i4K6V1#2i4@1g2r3i4@1u0o6i4K6W2r3i4@1f1@1i4@1t1^5i4K6R3H3i4@1f1%4i4@1p5%4i4K6S2p5i4@1f1#2i4K6W2o6i4@1p5^5x3o6l9@1x3o6p5$3y4e0f1`. 直接跳转到00401721,让它注册成功;另一种比较麻烦,还是照书上跳过recv和解密,到004016beh之后的验证,将它验证的几个地址里所存的数据事先在内存中相应的位置修改好,让它们和所比较的数分别相等,这样就不会跳到40174ah,即验证失败,因此,此时不管我输入任何用户名和密码,都会注册成功?
真是本好书,一页的内容,我反复思考了大半天,或许这是菜鸟必走之路。
欢迎大家一起讨论,有不足之处,还请指出,谢谢!
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