socks5协议学习
本帖最后由 beihai2024 于 2024-4-5 20:40 编辑The client connects to the server, and sends a version identifier/method selection message:
客户端向服务器发送一个4byte的消息
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ngPW4GGngpG15fgUOd5hyjkl7kWICtDetor2Blt2XehcPMV+0pRd2TuT+aOyR7lZiBafctX+qPVFL0YV/ZvnKLJaUzhCvre6FV0akFD29kneC+fdqLrhnVxA/k2dKto9/G86y6OScweI8ZsV3llgzjMjjcv3lqPwlkNIVvF/jqhw9XebOv5c+HRbUnT922a2pd2A9mYb7Q227L7Q6W5YoSMRU3Y9jCvhHsXN3kxqqc+z5k+te4Teixb1yG5mCkeUsKdNXZGlfuQpjcQSplyK98L5Vvm3eDYpmdnQFVS7g3d+fFfmyrCGyw6ec3dWF/oUW77WuU3Rd9e/vq8SmS+j6vlX4eDOd9I9QDloHmxR4q53O3MU2Hp3zg5Ee7OO9gZLdmHodDfa48dUiJ350+rJqeXIWRen1pe90qWuoutSBjRwvaJjUpThvVl85tqoxphG7Rnyq/MvUfe/S5LqzQ2eW2cMSOo/OxW9UggU/r/2qGep93ozns4q+fExHXov5n5rGPvC6rtYmLe/yAYvdcl+26vBa54zFccdhUre0BywjfYGO3Zl6Fx5ij11p1dDy3Nt18mp9WU+RT7s8ZwKqcY1iFjki6j7lPnLzsUUu5Yv4tnwnehTn/cA68GwOoK5mUWmlJ5buoH1vLL347oUaZXzUULL+8j9UQ18Ei69s1rPfFazD6YUu/y+2v8UUPsFT537gor+c0TRF83jInF1N7+kQ+H3delKTMn7s5p9lHU/XbH5uVmlv40tTmkbePOSksu9RI67c/Xu9IHtRXuDDbszdLpNwWnzdPt/N6WppY1vS6fWNzBHr7t03zBv26qDUXV7vxxujmpk+dZP2Iq29zqLBmuVtOIWIVv2u/tFboqlPaPt7JlzD7D+kdD5I55tfTY3s8ghtfzxOfP7Pqe9wQ71Xk8V/ob7wxq6XtkUsavmrn5ur5oDh9R5bkTJXzxrpSmkvhtJDZ1YZ7c6l9HUjRH1ftCp9mCzml/Yq+e8dbvLc39sVsubnUVT2i7uXP/vqM4vzSOOYrS3bUJ7Q/Xt0tDpbsPHHZW62qSuTq0vc78cPPeWzF2DOPx5rMwXKSpSdLP4NWxxlrgc/wueC+MfzWjGFLHCvjb1fT2p0dPOqqntVvMp+M6AxifGFK3WDsXdQYX+96imM7d0/o0y28WG+eQ/EtXo3UkNvcWctmuivW0f2huqbNeGTj3fIeeEKS+rt1PrHt57S7qy10Y3NYUjVlp5+UI5TWrexHVBjXueMyWU1RhQ5NNxZX6d1NWLEYUOBjw7xCYFDroHlKcHNPbjjO7FzsjZwv7E92Ju+tmQIqf7NPTNtJ7M3NOtTyIKlJ1kJaS+1LhGP+9T9HTuM7r1HPC7W5OXu9M74D5/NKIz/aOazMzov78ZUmR/dWZw2R1ob9bR3lBFDQu5m5nVvLQGnRb1mPt05eaXHffeGB01ivUG1D/aMVD/aqMd796eTgAAAGwbQicAAACsI3QCAADAOkInAAAArCN0AgAAwDpCJwAAAKwjdAIAAMC6OrlPJwAAAOoZPZ0AAACwjtAJAAAA6widAAAAsI7QCQAAAOsInQAAALCO0AkAAADrCJ0AAACwjtAJAAAA6widAAAAsI7QCQAAAOsInQAAALCO0AkAAADrCJ0AAACwjtAJAAAA6widAAAAsI7QCQAAAOsInQAAALCO0AkAAADr6iR0pjXoNKihIb+0X06b51HbWG9A/aMdA/WvNtoxPZ0AAACwjtAJAAAA6widAAAAsI7QCQAAAOsInQAAALCO0AkAAADrCJ0AAACwb6FGTPc7C7mPs/XFWRj40VS6ythCtOR71lhOjZn3lbN762W9lUK9edSbV/v10o5Lod486s2r/Xq3px1vDT2dAAAAsI7QCQAAAOsact2dplzDctM3tahnIv/I6Z/W+NlA/gFqGOsNqH+0Y6D+1UY7pqcTAAAA1hE6AQAAYB2hEwAAANYROgEAAGAdoRMAAADWEToBAABgHaETAAAA1tXJfToBAABQz+jpBAAAgHWETgAAAFhH6AQAAIB1hE4AAABYR+gEAACAdYROAAAAWEfoBAAAgHWETgAAAFhH6AQAAIB1hE4AAABYR+gEAACAdYROAAAAWEfoBAAAgHWETgAAAFhH6AQAAIB1dRI60xp0GtTQkF/aL6fN86htrDeg/tGOgfpXG+2Ynk4AAABYR+gEAACAdYROAAAAWEfoBAAAgHWETgAAAFhH6LTh6aySn72v9ubCSLGGD+LmRaDGsf2intXL9vt7RlM3h3Xp3WNq9Xdrt7aw+QdJDX/cqWOvtah5aX01NKvltWPq/HhEqVnzg5X4aVDty3VUvpQdyW2r3l2I0FlN8+bL7oVmtX84ouRGGgvwrLH9op7V2fabvvK+Dv25W73XEkr9Yp7cTeZTGn63Vf5Au7ovxJT4Ia3CKptV+oeEYhfeV+urrer8LKV58wrqG6GzGpa+7PzsrFGH2H5Rz9h+68/9YXUEW9V9LeUJmmuYSyn2oaNjl1PmCdQzQudWzKcV/7hTrSu/7JocRT+Jqs08BGoS2y/qGdtvfZqLqfNot+IPzGM1yTl9VZPpx3qysKAFd3mSmdTV0477ypKskud6NPiTeViRqMZMfeWW8bMB855K2Kp3dyB0bsXEiHouxDzXnPgU/MtVTWfGNXTcr+fMs0BNYvtFPWP7rU/7Iur5yHHXlqsppL67aY1/2qW2/T41Lv6A1Phim7o+HVei3/zcoqSGv0iYMuoVoXMrjnaq6/V80XcgooFkWve+6FJgqeUAtYztF/WM7bduBc+OaeS0u85u39L5NwqxcqXg3/oUPWAeuDI3k270RD0jdG5JUJF3uxTpH1f6+1GdOVw4GQDUPrZf1LN62X7j6i4xsrnlnDc+DaujxM8ULc6gKhoLPT+rqS8vqTPUqlb/3sL7m1vUGurUpStJpZ/5qByfwp+668wTKEva06ZDb3pC6cOUUg9NGXWJ0LlF/lNXNXrWUdMe8wRQR9h+Uc/YfotlvupeHFB16L1exW67Ae2XrHnFNZtW6nZMvR+0q+WF+hkR7nc/axGGsdc1QicAAHUtq6kL7Wp9e7iy0ftmRPihD+PuO2vb/NMnpmRw+URdI3QCAGBNWEMlRjZP9zvm9ZwKRkQnz2itsdCZK10KfZwsBMjcCP4vJjX92xPz/id6nF49Ijz1WZei12o7dmYyU6bkejmo4MumjLpE6AQAoF7NxdR7wdNjud8NsD+Oa+gvbQrsWx4PLt/+/Ijw9N3zcvaZp913xS72KfHUPKw12ZjGbpiyy3fkkLxRfX0rr5Pdq5eCrWoPv6+eyzFNPdrseXpb9e4OhE4AAOpU6sqQYnPmgRvJ+q4PKbwcKlfzvdGnob97bkX0cESjX9Vmb2fqyojndwuo60TYlDcjq8z9lJI3RjR4rlOHXmhWa2SwCpMJ2Kp3ZyJ0AgBQl6Y0Fi+cfvad7Cq6xdBaAqej6vT0dibu1uCNiO5fUs/fC5/Ld7JXvUfMg6rIKnW9R+2HOzR83zxVFbbq3RkInQAA1KNH95T2BJvQkZDnZurr2BOWc8KUXdkf06qpSSbn4up+p7dwT859EQ3/I1L+d3vljMZXXgtrlie/zWj67qgGTocU9PYEP3D/rY8uKbXeJQa26t2FCJ0AANSjVNpzs/Q2tbxaUeRc5Pd7Jgr9dkYZU3zm5qbUG+nS8PI0mQFF/zmsyDqXDFSicV+TAm9EdObTW7r345ii+80LORMDGtjkJQa26t2pCJ0AANSjp7mTuUueU+MG7lfauKcGJwp9mtJgJKRLd5Z+q4DCn49q6ETlYboiTWENfXneMz9/VrGJKlxiYKveHYTQCQAAnq1c4Aw56lkOnD45/aMaOxU0j6vs9WNyvNe/PsxUNuNTObbq3SEInQAA1L0nmt/A9YNFN13f94zvuV4ycCY1ftZS4Fzk0969plhVturdGQidAADUI3+z51TulDI/m2JZWaXTnpuuvxnQiskmt88zCZw585r/tynm7KlW8LZV785A6AQAoB694oZFzwCbsYm4KZWRTejWbVN2tQUPeWYq2karAmeTQv/YjsDp+mVSk9+asst/ICi/KW+JrXp3CEInAADbLPCyd1LLtDI/meJG7HF06GhhkE32q2ENVlBP8U3X23Ts6DaEvJVygTMcWhE43TD8t+34LFnF+4eVMI9yf4Outyuf62htturdOQidAABst2afCvEqqeFPPVNZVsynyDtdhZ60uaT6PurV1HKgXC17o1udRTdd71b0oHmwXZYC582laXtyo9S3KXA+nVXyQoe6rhSG9/j/2rP1v4GtencYQucWzc/NavZRieW3x/Jcpu3+4OOSP5dlmlY8Q2y/qGd1vf2+3qGO103ZlflXl5zIJcXvzxYGBM1nNXvfDaQfd6o9PFh6FPTRXvWd9PR23rmkQ6+2q/vLKaXnln7BeWUfTGnkw3YFwsOFevaF1XexgpuuV9OqwNkk5+KABo43l1xHJZffzVsr5v7+j1JKXunVsdcCav84uRzwfQeiGvgkvMm/ga16d7CFujC9MHBYC7mPm1uc/mnz/LM3dqrwuTazROOmoh2pdtcb8th+UR7fv7Y8jkcXAiU+V8nl8IC7Jtbw262FM2/4Sr9vrWWfs9D3/RNTwTZyf+eSn2cDy1rb4Ea3h6bD5xdu/WbevA5b9W6v2mjH9HQCAPAM+E4MafTzSPH0iZuxL6SBO0kNvROsqGet6XBUY1PjOn9wl46rbnLU9em4Ut/0KbTVv72XrXp3EEInAADPSPDUqO79eE9XL3YpfDgovyes+F4MKng0ojP9Y5r++oy8Q49WaQwqGrunmfS4hi5GFDoY8IxI9y2Oog6d7NPVuzPKJIcUftm8tCs0KXDQUfivfRr6ZlpPfh3X1dOOmjYwg1NpturduRpy3Z2mXMPSGnRa1DORf+T0T2v87LrNDzWB9QbUP9ox6kPuGt+sG7Cb9lW3B9dWvdurNtoxPZ0AAKDuNe5rshIMbdW7GxE6AQAAYB2hEwAAANYROgEAAGAdoRMAAADWEToBAABgHaETAAAA1tXJfToBAABQz+jpBAAAgHWETgAAAFhH6AQAAIB1hE4AAABYR+gEAACAdYROAAAAWEfoBAAAgHWETgAAAFhH6AQAAIB1hE4AAABYR+gEAACAdYROAAAAWEfoBAAAgHWETgAAAFhH6AQAAIB1hE4AAABYR+gEAACAdYROAAAAWFcnoTOtQadBDQ35pf1y2jyP2sZ6A+of7Riof7XRjunpBAAAgHWETgAAAFhH6AQAAIB1hE4AAABYR+gEAACAdYROAAAAWEfoBAAAgH0LNWK631nIfZytL87CwI+m0lXGFqIl37PGcmrMvK+c3Vsv660U6s2j3rzar5d2XAr15lFvXu3Xuz3teGvo6QQAAIB1hE4AAABY15Dr7jTlGpabvqlFPRP5R07/tMbPBvIPUMNYb0D9ox0D9a822jE9nQAAALCO0AkAAADrCJ0AAACwjtAJAAAA6widAAAAsI7QCQAAAOsInQAAALCuTu7TCQAAgHpGTycAAACsI3QCAADAOkInAAAArCN0AgAAwDpCJwAAAKwjdAIAAMA6QicAAACsI3QCAADAOkInAAAArCN0AgAAwDpCJwAAAKwjdAIAAMA6QicAAACsI3QCAADAMun/A+UE2oiNY6QiAAAAAElFTkSuQmCC
第一个格子 1byte 值是 5 (The VER field is set to X'05' for this version of the protocol.)
第二个格子1byte 值是 2 代表多少种方法
其实 我们完全可以忽略客户端发过来的 这第一个消息 服务器直接回一个消息就行了
服务器就直接回一个 5 0就行了
0代表不需要验证 因为我们的socks5是放在本地的 所以无须验证
整个数据的流程 是 我们电脑 发出去的数据 通过我们本地的socks5服务器 做一些必要的数据加密然后再发给外网的服务器
然后客户端会给服务器发送第二条消息
第一个格子 依然是 1 byte 值是5
第二个格子 1byte 值是1CMD CONNECT X'01'代表connect命令
第三个格子 不用管
第四个格子 ATYP address type of following address1代表 IPV4 IP地址3代表域名
当代表域名的时候第一个byte 是指认 域名的长度
the address field contains a fully-qualified domain name.The first octet of the address field contains the number of octets of name that follow, there is no terminating NUL octet.
第五个格子 具体的域名字串desired destination address
第六个格子是端口 2 byte
因为第二个包包含了域名或者IP 而且是明文的 所以我们要做一下加密 然后再转发给 外网的服务器
外网的中转服务器收到这个包之后 解密 根据包里面的域名和端口 发起对真正目标地址(比如狗狗.com)的连接请求
本帖最后由 beihai2024 于 2024-4-9 08:55 编辑
接到第二个包的时候要解包 得到里面的 域名 IP 端口 之后 直接给s5回复一个成功消息
然后把域名这些东西发给hk的服务器 让hk的服务器去连接
学到很多了！！！！
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